Today, with the object-oriented non-porous, the idea of using the object is modeling software system, which has become the main work of software development, but the traditional coding work "retreats two lines". A system model is well built, in order to meet the user's needs, ensure the stability and quality of the system, improve the system's scalability and launch a good foundation.
UML and Rational ROSE are a language and tool for object-oriented modeling. UML, Unified Modeling Language, Unified Modeling Language, is an object-oriented modeling language. Its main role is to help us perform object-oriented description and modeling for software systems. It can describe this software development process from demand analysis. Until the whole process of implementing and testing. UML By building a variety of classes, the associations between classes, how the class / objects mutually cooperate with the system's dynamic behavior (these are called model elements) to form the entire model, and the objective world is portrayed. UML provides a variety of graphics, such as use case, class diagrams, object pictograms, sequential diagrams, collaboration maps, status maps (5 types of five types), etc., to treat these model elements and their relationships, allowing people to clear Easy understanding of the model. We can visit the model from multiple perspectives, making more comprehensive understanding of the model, so that the same model element may appear in multiple figures, corresponding to multiple graphics elements.
with
Rational Rose
It is a language and tool for object-oriented modeling.
UML
,
Unified Modeling Language
Uniform modeling language is an object-oriented modeling language. Its main role is to help us perform object-oriented descriptions and modeling for software systems. It can describe the software development process from demand analysis until implementation and testing The whole process.
UML
By building a variety of classes, the associations between classes
/
How to match each other's components such as dynamic behavior of the system (these are called model elements) to form a whole model to portray the objective world.
UML
Provide various graphics, such as
Use Case
Figure, class diagram, object map, sequential diagram, collaboration map, status diagram (10 types of 5 types), etc., these model elements and their relationship visualize, allowing people to understand the model. We can visit the model from multiple perspectives, making more comprehensive understanding of the model, so that the same model element may appear in multiple figures, corresponding to multiple graphics elements.
Rose is an object-oriented modeling tool for US Rational, using this tool, we can build a model of software systems described with UML, and automatically generate and maintain code from C , Java, VB, Oracle and other languages and systems.
Is the United States
Rational
Object-oriented modeling tool for company,
Using this tool, we can build
UML
The model of the software system described, and can automatically generate and maintain
C
,
Java
,
VB
,
Oracle
Waiting for language and system code.
Rose's interface is divided into three partial Browser windows, Diagram windows, and Document windows. The Browser window is used to browse, create, delete, and modify the model elements in the model; the Diagram window is used to display and create various diagrams of the model; the Document window is used to display and write document comments for each model element. If you want to build a software system, you must first understand the needs of users, which is what your software system is functional. This is the foundation of all development. With demand, the next job is to analyze the static structure of the system, see what you must do in our system. After the system's general structure is set, it depends on how these system components can cooperate with each other to implement system functions (ie, the dynamic structure of the system), and must also consider the details related to the environment, such as what language, what operations The system is turned, and so on, this work is design. Design work is refined to a certain extent, you can encode it. The last job, there is no doubt, it is test and maintenance. In short, this order is generally "functional static structural dynamic structure coding test maintenance". Through a simple example, we browse the role of the UML in the entire process of software system construction and initially understand the Rose usage. The first is user needs, system functions. Our example is actually very simple, it is a TODO (to do) the maintenance tool for the table, you can create, delete, and manage TODO information for users. The information stored in the TODO table is stored in the file system. How should I use UML to describe such a demand? First, we need to identify users of the system and related external systems, in UML, they are called actors. Identify actors is important, it can help us define the boundaries of the software system, guide us to explore users' needs, assist us design user interface, etc., is the first step in the demand analysis phase. For our simple example, there are two actors: TODO USER (system users) and FileSystem. Next, we start the analysis of the system's USE Case for each actor. Use case is a very important concept in a UML. During the entire software development of UML, USE CASE is in a central status. So, what is USE CASE? In the UML document, the definition of the USE CASE is that the definition and description of a consistent functional unit of the system or subsystem is not presented without presenting an internal structure of a system or subsystem. A little mouth, right? In fact, USE CASE is a description of the system function, but a USE CASE describes a part of the entire system function, which must be a logically relatively complete functional process. During the development of UML, demand is expressed with use case, and the interface is designed with use case. Many classes are discovered according to USE CASE, and the test instance is generated according to use case, including the entire The management and task assignment of development is also organized according to USE Case. Ah, USE Case is too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task.
TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER. For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive. Interface is divided into three parts
Browser
window,
Diagram
Window and
Document
window.
Browser
Window used to browse, create, delete, and modify model elements in the model;
Diagram
Window used to display and create various pictures of the model;
Document
The window is used to display and write document comments for each model element. If you want to build a software system, you must first understand the needs of users, which is what your software system is functional. This is the foundation of all development. With demand, the next job is to analyze the static structure of the system, see what you must do in our system. After the system's general structure is set, it depends on how these system components can cooperate with each other to implement system functions (ie, the dynamic structure of the system), and must also consider the details related to the environment, such as what language, what operations The system is turned, and so on, this work is design. Design work is refined to a certain extent, you can encode it. The last job, there is no doubt, it is test and maintenance. In short, this order is generally "functional static structural dynamic structure coding test maintenance". Through a simple example, we browse the role of the UML in the entire process of software system construction and initially understand the Rose usage. The first is user needs, system functions. Our example is actually very simple, it is a TODO (to do) the maintenance tool for the table, you can create, delete, and manage TODO information for users. The information stored in the TODO table is stored in the file system. How should I use UML to describe such a demand? First, we need to identify users of the system and related external systems, in UML, they are called actors. Identify actors is important, it can help us define the boundaries of the software system, guide us to explore users' needs, assist us design user interface, etc., is the first step in the demand analysis phase. For our simple example, there are two actors: TODO USER (system users) and FileSystem. Next, we start the analysis of the system's USE Case for each actor. Use case is a very important concept in a UML. During the entire software development of UML, USE CASE is in a central status. So, what is USE CASE? In the UML document, the definition of the USE CASE is that the definition and description of a consistent functional unit of the system or subsystem is not presented without presenting an internal structure of a system or subsystem. A little mouth, right? In fact, USE CASE is a description of the system function, but a USE CASE describes a part of the entire system function, which must be a logically relatively complete functional process. During the development of UML, demand is expressed with use case, and the interface is designed with use case. Many classes are discovered according to USE CASE, and the test instance is generated according to use case, including the entire The management and task assignment of development is also organized according to USE Case. Ah, USE Case is too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task. TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER.
For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive. UML
The role of this language is in the whole process of software system construction, and initially understands
Rose
Usage. The first is user needs, system functions. Our example is actually very simple, it is a TODO (to do) the maintenance tool for the table, you can create, delete, and manage TODO information for users. The information stored in the TODO table is stored in the file system. How should I use UML to describe such a demand? First, we need to identify users of the system and related external systems, in UML, they are called actors. Identify actors is important, it can help us define the boundaries of the software system, guide us to explore users' needs, assist us design user interface, etc., is the first step in the demand analysis phase. For our simple example, there are two actors: TODO USER (system users) and FileSystem. Next, we start the analysis of the system's USE Case for each actor. Use case is a very important concept in a UML. During the entire software development of UML, USE CASE is in a central status. So, what is USE CASE? In the UML document, the definition of the USE CASE is that the definition and description of a consistent functional unit of the system or subsystem is not presented without presenting an internal structure of a system or subsystem. A little mouth, right? In fact, USE CASE is a description of the system function, but a USE CASE describes a part of the entire system function, which must be a logically relatively complete functional process. During the development of UML, demand is expressed with use case, and the interface is designed with use case. Many classes are discovered according to USE CASE, and the test instance is generated according to use case, including the entire The management and task assignment of development is also organized according to USE Case. Ah, USE Case is too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task. TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER. For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive.
Todo
(Wait-to-do) Maintenance tool, you can create, delete, and manage users
Todo
information.
Todo
Information stored in the file system. How should I use UML to describe such a demand? First, we need to identify users of the system and related external systems, in UML, they are called actors. Identify actors is important, it can help us define the boundaries of the software system, guide us to explore users' needs, assist us design user interface, etc., is the first step in the demand analysis phase. For our simple example, there are two actors: TODO USER (system users) and FileSystem. Next, we start the analysis of the system's USE Case for each actor. Use case is a very important concept in a UML. During the entire software development of UML, USE CASE is in a central status. So, what is USE CASE? In the UML document, the definition of the USE CASE is that the definition and description of a consistent functional unit of the system or subsystem is not presented without presenting an internal structure of a system or subsystem. A little mouth, right? In fact, USE CASE is a description of the system function, but a USE CASE describes a part of the entire system function, which must be a logically relatively complete functional process. During the development of UML, demand is expressed with use case, and the interface is designed with use case. Many classes are discovered according to USE CASE, and the test instance is generated according to use case, including the entire The management and task assignment of development is also organized according to USE Case. Ah, USE Case is too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task. TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER. For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive. UML
Come describe? First, we need to identify users of the system and related external systems, in UML, they are called actors. Identify actors is important, it can help us define the boundaries of the software system, guide us to explore users' needs, assist us design user interface, etc., is the first step in the demand analysis phase. For our simple example, there are two actors: TODO USER (system users) and FileSystem. Next, we start the analysis of the system's USE Case for each actor. Use case is a very important concept in a UML. During the entire software development of UML, USE CASE is in a central status. So, what is USE CASE? In the UML document, the definition of the USE CASE is that the definition and description of a consistent functional unit of the system or subsystem is not presented without presenting an internal structure of a system or subsystem. A little mouth, right? In fact, USE CASE is a description of the system function, but a USE CASE describes a part of the entire system function, which must be a logically relatively complete functional process. During the development of UML, demand is expressed with use case, and the interface is designed with use case. Many classes are discovered according to USE CASE, and the test instance is generated according to use case, including the entire The management and task assignment of development is also organized according to USE Case. Ah, USE Case is too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task. TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER. For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive. UML
In the middle, they are called
Actor
(Character). Identify
Actor
It is very important that it can help us define the boundaries of the software system, guide us to explore users' needs, assist us design user interface, etc., is the first step in the demand analysis phase. For our simple example, there are two
Actor
:
Todo User
(User)
with
FileSystem
(Related external systems). Next, we start the analysis of the system's USE Case for each actor. Use case is a very important concept in a UML. During the entire software development of UML, USE CASE is in a central status. So, what is USE CASE? In the UML document, the definition of the USE CASE is that the definition and description of a consistent functional unit of the system or subsystem is not presented without presenting an internal structure of a system or subsystem. A little mouth, right? In fact, USE CASE is a description of the system function, but a USE CASE describes a part of the entire system function, which must be a logically relatively complete functional process. During the development of UML, demand is expressed with use case, and the interface is designed with use case. Many classes are discovered according to USE CASE, and the test instance is generated according to use case, including the entire The management and task assignment of development is also organized according to USE Case. Ah, USE Case is too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task. TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER. For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive. Actor
, We start analytical system
Use Case
.
Use Case
Is an
UML
Very important concept, in use
UML
During the entire software development process,
Use Case
In a central status. So, what is USE CASE? In the UML document, the definition of the USE CASE is that the definition and description of a consistent functional unit of the system or subsystem is not presented without presenting an internal structure of a system or subsystem. A little mouth, right? In fact, USE CASE is a description of the system function, but a USE CASE describes a part of the entire system function, which must be a logically relatively complete functional process. During the development of UML, demand is expressed with use case, and the interface is designed with use case. Many classes are discovered according to USE CASE, and the test instance is generated according to use case, including the entire The management and task assignment of development is also organized according to USE Case. Ah, USE Case is too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task. TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER. For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive. Use Case
? in
UML
Documentation,
Use Case
The definition is that the definition and description of a consistent functional unit of the system or subsystem does not present the internal structure of a system or subsystem. A little mouth, right? in fact
Use Case
It is a description of the system function, but one
Use Case
Described is part of the entire system function, this part must be a logically relatively complete functional process. During the development of UML, demand is expressed with use case, and the interface is designed with use case. Many classes are discovered according to USE CASE, and the test instance is generated according to use case, including the entire The management and task assignment of development is also organized according to USE Case. Ah, USE Case is too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task. TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER. For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive.
UML
During the development process, demand is used
Use Case
To express, the interface is
Use Case
Under the auxiliary design, many classes are based
Use Case
To discover, the test instance is based on
Use Case
To generate, including the management and task assignment of the entire development, it is also based on USE Case
Organize. what,
Use Case
It's too important! For each actor, he uses a system of a system, so we recognize and analyze that USE CASE is to do one by one for each actor. For TODO User, we can easily identify two USE Case: Add Task and Remove Task. TODO USER actively uses the system features described in these two USE CASE, so on our USE CASE diagram, TODO User and the relationship between the two USE CASE are represented by arrows from TODO USER. For FileSystem, we recognize the same two USE CASE, but this arrow points from Use Case to FileSystem, indicating that FileSystem is passive.
Actor
For example, he uses a system of a system, so we recognize and analyze
Use Case
Yes, for each
Actor
Come on one by one. for
Todo User
We can easily identify two
Use Case
:
Add Task
with
Remove Task
.
Todo User
Take the initiative to use these two
Use Case
The system features described, so in our
Use Case
On the picture,
Todo User
And these two
Use Case
The relationship is used from
Todo User
An arrow is sent. for
FileSystem
, We recognize the same two
Use Case
However, this time the arrow is from
Use Case
direction
FileSystem
Mean
FileSystem
It is passive.
Use case can be described in many ways, we can use the natural language (English, Chinese, with your convenience), you can use a formal language (???) or a variety of illustrations. In UML, USE CASE is usually described in two diagrams, which is a sequence diagram and a collaboration diagram. Static Structure Analysis by analyzing the USE Case and the problem domain, we get class. Now we have to analyze these classes of properties, operations, and the relationship between them, that is, the static structure of the system. The property is the information that the object must be stored, and the operation of the class can be identified by the message sent to the object in the sequence diagram. We focus on see the association between classes. The static structure of the system is mainly represented by a class diagram. In the class diagram, the class is represented by a box, which is divided into three parts by the horizontal line. The first part is the name of the class, the second part is the properties of the class, the third part is the operation of the class. The association between the class is expressed in the horizontal line of a connection class. The horizontal line with an arrow indicates a one-way association, and there is no arrow represents a two-way association. Good analysis associated with classes has a very good help in future implementation and expansion. Logically-related classes can be packaged into packages, which provides a good means for our organization and management of systems and development processes. Everyone can see a few packages on the class map of our example. A great advantage for object-oriented software project is that there is no obvious difference between analysis and design, and there will be no semantic gaps between analysis and design in traditional software engineering. When analyzing to a certain extent, considering the factors that implement the environment, naturally transition to the design phase. Since our small example uses the information of the file system storage Todo table, we need a CFILE class to encapsulate the functionality and operation of the file system. At this point, the static structural analysis and design of our small example have been preliminary results. Next, the dynamic structure of the system can be analyzed and designed according to these results. This includes refining and modifying the description of USE CASE, such as corresponding to the information between the type of operation and the object, filling parameters, etc., as well as a more complex class design status map. Because this example is relatively simple, there is no more complicated class, so there is no need to design the status map, just refine the sequential chart of the USE CASE. These analysis and design work are often interactive and promoted. You often find a dynamic structure, find a class, a property, or you need to add an action; and the relationship between the class, the design is also designed, Will constantly change. So we must continue to deepen and refine the design solution until you reach a stable state, then we can consider the system's implementation. Implementation models In implementing the model, we define components that make up the software system, such as the DLL library, EXE file, Java Applet, ActiveX Control, web page, etc. Define the relationship between these components and them, have a great advantage to generate the automatic generation of the code, the configuration, test management, and software packaging issuance of the software system. For our small example, there is only one component final EXE file Todolist. In the Component View packet in ROSE, we create this part. You can then drag the individual classes to this part, indicating that these classes are ultimately implemented in this part.
After all of these live, we can automatically generate a code! Rose can automatically generate C , Java, Corba IDL, Visual Basic, Visual C , Oracle Schema, etc., etc. jobs. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk. The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. You can use a lot of ways, we can use natural language (English, Chinese, with your convenience), you can use a variety of illustrations (???) or a variety of illustrations. in
UML
In the middle, it is usually described in two ways.
Use Case
They are sequential maps (
Sequence Diagram
) And collaborative map (
Collaboration Diagram
). Static Structure Analysis by analyzing the USE Case and the problem domain, we get class. Now we have to analyze these classes of properties, operations, and the relationship between them, that is, the static structure of the system. The property is the information that the object must be stored, and the operation of the class can be identified by the message sent to the object in the sequence diagram. We focus on see the association between classes. The static structure of the system is mainly represented by a class diagram. In the class diagram, the class is represented by a box, which is divided into three parts by the horizontal line. The first part is the name of the class, the second part is the properties of the class, the third part is the operation of the class. The association between the class is expressed in the horizontal line of a connection class. The horizontal line with an arrow indicates a one-way association, and there is no arrow represents a two-way association. Good analysis associated with classes has a very good help in future implementation and expansion. Logically-related classes can be packaged into packages, which provides a good means for our organization and management of systems and development processes. Everyone can see a few packages on the class map of our example. A great advantage for object-oriented software project is that there is no obvious difference between analysis and design, and there will be no semantic gaps between analysis and design in traditional software engineering. When analyzing to a certain extent, considering the factors that implement the environment, naturally transition to the design phase. Since our small example uses the information of the file system storage Todo table, we need a CFILE class to encapsulate the functionality and operation of the file system. At this point, the static structural analysis and design of our small example have been preliminary results. Next, the dynamic structure of the system can be analyzed and designed according to these results. This includes refining and modifying the description of USE CASE, such as corresponding to the information between the type of operation and the object, filling parameters, etc., as well as a more complex class design status map. Because this example is relatively simple, there is no more complicated class, so there is no need to design the status map, just refine the sequential chart of the USE CASE. These analysis and design work are often interactive and promoted. You often find a dynamic structure, find a class, a property, or you need to add an action; and the relationship between the class, the design is also designed, Will constantly change. So we must continue to deepen and refine the design solution until you reach a stable state, then we can consider the system's implementation. Implementation models In implementing the model, we define components that make up the software system, such as the DLL library, EXE file, Java Applet, ActiveX Control, web page, etc. Define the relationship between these components and them, have a great advantage to generate the automatic generation of the code, the configuration, test management, and software packaging issuance of the software system. For our small example, there is only one component final EXE file Todolist. In the Component View packet in ROSE, we create this part. You can then drag the individual classes to this part, indicating that these classes are ultimately implemented in this part. After all of these live, we can automatically generate a code! Rose can automatically generate C , Java, Corba IDL, Visual Basic, Visual C , Oracle Schema, etc., etc. jobs. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk.
The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Use Case
And the problem domain, we get class. Now we have to analyze these classes of properties, operations, and the relationship between them, that is, the static structure of the system. The property is the information that the object must be stored, and the operation of the class can be identified by the message sent to the object in the sequence diagram. We focus on see the association between classes. The static structure of the system is mainly represented by a class diagram. In the class diagram, the class is represented by a box, which is divided into three parts by the horizontal line. The first part is the name of the class, the second part is the properties of the class, the third part is the operation of the class. The association between the class is expressed in the horizontal line of a connection class. The horizontal line with an arrow indicates a one-way association, and there is no arrow represents a two-way association. Good analysis associated with classes has a very good help in future implementation and expansion. Logically-related classes can be packaged into packages, which provides a good means for our organization and management of systems and development processes. Everyone can see a few packages on the class map of our example. A great advantage for object-oriented software project is that there is no obvious difference between analysis and design, and there will be no semantic gaps between analysis and design in traditional software engineering. When analyzing to a certain extent, considering the factors that implement the environment, naturally transition to the design phase. Since our small example uses the information of the file system storage Todo table, we need a CFILE class to encapsulate the functionality and operation of the file system. At this point, the static structural analysis and design of our small example have been preliminary results. Next, the dynamic structure of the system can be analyzed and designed according to these results. This includes refining and modifying the description of USE CASE, such as corresponding to the information between the type of operation and the object, filling parameters, etc., as well as a more complex class design status map. Because this example is relatively simple, there is no more complicated class, so there is no need to design the status map, just refine the sequential chart of the USE CASE. These analysis and design work are often interactive and promoted. You often find a dynamic structure, find a class, a property, or you need to add an action; and the relationship between the class, the design is also designed, Will constantly change. So we must continue to deepen and refine the design solution until you reach a stable state, then we can consider the system's implementation. Implementation models In implementing the model, we define components that make up the software system, such as the DLL library, EXE file, Java Applet, ActiveX Control, web page, etc. Define the relationship between these components and them, have a great advantage to generate the automatic generation of the code, the configuration, test management, and software packaging issuance of the software system. For our small example, there is only one component final EXE file Todolist. In the Component View packet in ROSE, we create this part. You can then drag the individual classes to this part, indicating that these classes are ultimately implemented in this part. After all of these live, we can automatically generate a code! Rose can automatically generate C , Java, Corba IDL, Visual Basic, Visual C , Oracle Schema, etc., etc. jobs. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk.
The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Todo
The information of the table, so we need one
Cfile
Class to encapsulate the function and operation of the file system. At this point, the static structural analysis and design of our small example have been preliminary results. Next, the dynamic structure of the system can be analyzed and designed according to these results. This includes refining and modifying the description of USE CASE, such as corresponding to the information between the type of operation and the object, filling parameters, etc., as well as a more complex class design status map. Because this example is relatively simple, there is no more complicated class, so there is no need to design the status map, just refine the sequential chart of the USE CASE. These analysis and design work are often interactive and promoted. You often find a dynamic structure, find a class, a property, or you need to add an action; and the relationship between the class, the design is also designed, Will constantly change. So we must continue to deepen and refine the design solution until you reach a stable state, then we can consider the system's implementation. Implementation models In implementing the model, we define components that make up the software system, such as the DLL library, EXE file, Java Applet, ActiveX Control, web page, etc. Define the relationship between these components and them, have a great advantage to generate the automatic generation of the code, the configuration, test management, and software packaging issuance of the software system. For our small example, there is only one component final EXE file Todolist. In the Component View packet in ROSE, we create this part. You can then drag the individual classes to this part, indicating that these classes are ultimately implemented in this part. After all of these live, we can automatically generate a code! Rose can automatically generate C , Java, Corba IDL, Visual Basic, Visual C , Oracle Schema, etc., etc. jobs. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk. The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes.
You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Use Case
Description, such as corresponding to the information between the class and the object, filling parameters, etc., as well as a more complex class design state diagram. Because this example is relatively simple, there is no more complicated class, so there is no need to design the status map, just refine the sequential chart of the USE CASE. These analysis and design work are often interactive and promoted. You often find a dynamic structure, find a class, a property, or you need to add an action; and the relationship between the class, the design is also designed, Will constantly change. So we must continue to deepen and refine the design solution until you reach a stable state, then we can consider the system's implementation. Implementation models In implementing the model, we define components that make up the software system, such as the DLL library, EXE file, Java Applet, ActiveX Control, web page, etc. Define the relationship between these components and them, have a great advantage to generate the automatic generation of the code, the configuration, test management, and software packaging issuance of the software system. For our small example, there is only one component final EXE file Todolist. In the Component View packet in ROSE, we create this part. You can then drag the individual classes to this part, indicating that these classes are ultimately implemented in this part. After all of these live, we can automatically generate a code! Rose can automatically generate C , Java, Corba IDL, Visual Basic, Visual C , Oracle Schema, etc., etc. jobs. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk. The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary.
Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Use Case
The sequence chart is OK. These analysis and design work are often interactive and promoted. You often find a dynamic structure, find a class, a property, or you need to add an action; and the relationship between the class, the design is also designed, Will constantly change. So we must continue to deepen and refine the design solution until you reach a stable state, then we can consider the system's implementation. Implementation models In implementing the model, we define components that make up the software system, such as the DLL library, EXE file, Java Applet, ActiveX Control, web page, etc. Define the relationship between these components and them, have a great advantage to generate the automatic generation of the code, the configuration, test management, and software packaging issuance of the software system. For our small example, there is only one component final EXE file Todolist. In the Component View packet in ROSE, we create this part. You can then drag the individual classes to this part, indicating that these classes are ultimately implemented in this part. After all of these live, we can automatically generate a code! Rose can automatically generate C , Java, Corba IDL, Visual Basic, Visual C , Oracle Schema, etc., etc. jobs. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk. The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes.
By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. DLL
Library,
EXE
Document,
Java applet
La,
ActiveX Control
La,
Web
Page, wait. Define the relationship between these components and them, have a great advantage to generate the automatic generation of the code, the configuration, test management, and software packaging issuance of the software system. For our small example, there is only one component ultimately
EXE
file
Todolist
. In the Component View packet in ROSE, we create this part. You can then drag the individual classes to this part, indicating that these classes are ultimately implemented in this part. After all of these live, we can automatically generate a code! Rose can automatically generate C , Java, Corba IDL, Visual Basic, Visual C , Oracle Schema, etc., etc. jobs. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk. The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Rose
middle
Component View
In the package, we create this part. You can then drag the individual classes to this part, indicating that these classes are ultimately implemented in this part. After all of these live, we can automatically generate a code! Rose can automatically generate C , Java, Corba IDL, Visual Basic, Visual C , Oracle Schema, etc., etc. jobs. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk. The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Rose
Can generate automatically
C
,
Java
,
CORBA IDL
,
Visual Basic
,
Visual C
,
Oracle Schema
Wait for different language and system code, and can carry out two-way conversions between "two-way engineering" models and code, greatly alleviate the work of code writing. However, there are many code generation content, and it is not our simple tutorial. The sequence diagram and collaboration map From the object-oriented point of view, the system's functionality is done by a set of objects to transmit messages with each other, and the sequence diagrams and collaboration diagrams are dynamic behaviors of the system by describing such objects and messages. We first use a sequential diagram to describe USE Case AddTsk. The addtask's function is to join a TASK item in the TODO table. It should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Use case addtask
.
Addtask
The function is to
Todo
Add one in the table
Task
Item, its steps should be: Open the window to join the Task item; enter the corresponding information; generate a Task object; add this task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Task
The window of the item; enter the corresponding information; generate a Task object; add this task into the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Task
Object; add this Task to the Task table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Task
join in
Task
Table. Then, our sequence diagram can be drawn: in the figure, block represents an object, the part before the number in the block is the name of the object, after the colon is the name of the class belonging to the object. The vertical dashed line below the block is the lifeline of the object, indicating that the object exists in a certain period of time from the top to the time axis. Arrows between objects represent messaging between objects. Those long reasons represent the time and call relationship of a certain operation method. The sequence diagram has a twin brother collaboration map, and the collaboration map of AddTask is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class. Addtask
The collaborative figure is like this. These two diagrams are actually the same thing, that is, a set of objects that achieve a system function and messaging between them. However, in the sequential diagram, time is as an explicit factor, this is especially useful when constructing a real-time system. In the collaboration map, there is no explicit time factor, but the association between the objects is a view, which is very helpful for investigating their messaging in the context of a group of interrelated objects. The sequence diagram and collaboration diagram are a visitor for different perspectives on the same thing. We get its sequential diagram from the description of the USE CASE natural language, from the sequence diagram we can find many classes. You say, we have a window, so we need a corresponding window class; we have a Task object, there is a Task class, similar, Tasks uses a collection object used to manage Task. It is also necessary. Great! Now you see the role of use case and sequence diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now there is a concept of use case, you can provide a powerful clue and fulcrum for identification of objects and classes. By analyzing USE Case, constructing its sequential diagram description, coupled with traditional objects and classes in the problem domain, you can find most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. After identifying and analyzing USE Case, our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class.
Use Case
The description of the natural language has got its sequential diagram, and we can find many classes from the sequence diagram. You said, we have a window, so we need to have a corresponding window class; we have a Task
Object, there is a corresponding
Task
Class, similar,
Tasks
This is used to manage and organize
Task
Collection objects are also required.
Great!
Now you see
Use Case
And sequential diagram to identify and discover classes! In the traditional object-oriented analysis, the identification of the class is carried out by analyst's experience and inspiration, which is too difficult to grasp. Now has
Use Case
The concept provides a powerful clue and fulcrum for identification of objects and classes. after analysis
Use Case
Construct it sequential diagram description, coupled with traditional objects and classes in the problem domain, can discover most and system-related classes. Object-oriented analysis is also the most difficult identification and analysis of the analysis, and no mysterious spells. Now everyone can compete for this job. Identification and analysis
Use Case
Our needs analysis work can be reported. Now we start the static structure of the system is the analysis and design of the class.
