Cave passing through time - Book Review "Java Enterprise Design Mode"

zhaozj2021-02-08  405

Cave passing through time

Bears

(This article is started to "Zhonghua Reading", December 17, 2003)

For Valter Benjamin, the time is not a continuous body, but is full of cracks and shortcuts - may wish to say "cave". The past ghost always picks a time in the current resurrection, history with a star-splendid pattern. Support for this mysterious argument not only has a historical and spiral pop tide, but also a variety of books: two books, the contacts, the contacts are better than their own books; A sudden union, perhaps the most familiar memory of readers. For example, the "Application Server Principle and Implementation" (Electronic Industry Press, June 2003), under the recommendation of the two friends, I found it from Xinhua Bookstore. Obviously, its publisher is a growing J2EE boom, but reading it, but let me think more of Pan Aimin's "COM principle and application" launched in 1999. A topic that is hot enough, plus the content of the old readers feel kind. The only regret is that this respectable author seems to write a redhead file with these precious materials. The apostle Paul said to the Collins: "If the tongue is not easy to understand ... it is to talk to the air." Maybe "talk to the air" is the author's will? And this "Java Enterprise Design Pattern, Electronic Industry Press, Aug 2003) should be an unexpected harvest in the previous book - the unexpected gain of Xinhua Bookstore, this is a contradictory rhetoric. . Like a time tunnel, the other end of it is connected is May 2001 - I am de infliant in the design pattern. A new book has become an old friend of a long time, and has evoked the memory of the world. I don't know how many people read the top two volumes of Patternalns in Java (this "Java Enterprise Design Mode" is the third volume), at least in me, compares to "Java Design Mode", "Mode and Java" ... ... There is no identifiable name in the book name, and the name of Mark Grand is more sufficient to attract my eyes and buy desire. In the days of J2EE, the words of this book are also like a foreign land that cross time and space, and it has exuded the arrogant and proud of the discretion and therefore appears to be inconsistent with the time. For example, the most complex "persistence layer" mode, I am afraid the reader will take a little time to find it is actually "Data Access Object, DAO) mode and some infrastructure combinations; The "Session Object" mode is already the function of the J2EE application server. In the eyes of Mark Grand, J2EE does not have any special status, "Java Enterprise Design Mode" directly deeply into the underlying technology of Java enterprise applications (transactions, concurrency, distributed, persistence). If these underlying mechanisms are treated as the territory of the application server, then this book can even understand the map of the J2EE application server. On the other hand, the obstacle to the inner words, the application developers are not difficult to find their familiar coordinates - unfamiliar words may be like the motto in a foreign land, the exotic style is impressed by you. However, the ranking of the traceability may find that this atroke is translated from its own language. C. Alexander said that the mode is a solution to a common problem. In the case of a more than 20 years of experience, although Mark Grand's words are slightly old, it guarantees the most common problem in which he is included in the model, so that this capacity is the largest mode set. Value. Moreover, when the night is quiet, this time and space is reversed to me, I have given me a novelty reading experience: Although the "old" symbol in the book seems to be a bit wrong in the current period of the new month, but the finger code refers to me in J2EE "New" issues encountered from time to time.

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