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Extra info for Hibernate: a J2EE™ developer's guide

Sample text

Jsp">Add Author

52 53 Edit Author Everybody makes mistakes, and so it's important to provide a mechanism for fixing mistakes. 8 shows the form that enables a user to correct author information. 8. 12, updating an Author object is similar to creating one. save() and the use of the authorID to identify the record to update. 12. getParameter("authorID")%>">

Create Post Once a user has created an author, the author can make posts.

Xml file that corresponds to the class name. xml file somewhere on the current class path. When the application is run and the Configuration object is first created, Hibernate will verify that the mapping file and the associated Java class files can actually be bound together. After a successful configuration, Hibernate returns a SessionFactory. A SessionFactory is a thread-safe object intended to be shared throughout the application. Session objects from this SessionFactory. SchemaUpdate. This single line of code connects to the database and attempts to create tables, column, and key constraints corresponding to the declared mapping files.

StaleObjectStateException. 12. 15 shows the code for editing a post. StaleObjectStateException. This is the mechanism whereby Hibernate informs the application that the attempt to UPDATE the post has failed because of a problem with the Post version. 15. StaleObjectStateException stale) { error = "This post was updated by another transaction. finder. getParameter("postID")%>">  

<% } %> Delete Post Sometimes a post is no longer of interest or covers a topic that the writer wishes had never been brought up.

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