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.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184) at org.jboss.weld.module.web.el ... .jboss.weld.module.web.el.WeldValueExpression.getValue(WeldValueExpression.java:50) at com.sun ... ) at org.jboss.weld.module.web.el.WeldValueExpression.getValue(WeldValueExpression.java:50) at com.sun


500 companies as well as smaller companies and start-ups, governments and defence forces


situation so as to include relevant information (such as stack trace data). A throwable contains ... . It is also known as the chained exception facility, as the cause can, itself, have a cause ... thrown by the lower layer propagate outward, as it is generally unrelated to the abstraction provided

JPA Annotations for Callback Methods

The following annotations can mark methods as JPA callback methods: The Lifecycle Events section of the ObjectDB Manual explains how to use all these annotations on callback methods and with listener classes.

Step 1: Create a Web Project

Name (e.g. Guestbook) and click Next. Select Apache Tomcat 6 as the Server. Note: You may have to add Tomcat 6 as a new server by clicking the Add... button. Follow the instructions and specify

Step 7: Run the Spring Web App

At this stage your project should have the following structure: Use copy and paste to replace the content of the index.jsp file (which serves as the default front page) with the following redirection ... as a server in your NetBeans - you should be able to run your application now by selecting Run > Run

Step 5: Add a JSP Page

In this step we will add the JSP that generates the guestbook HTML output: Open the [New JSP File] dialog box by right clicking the WEB-INF node under the Web Pages node (in the [Projects] window) and selecting New > JSP... Enter guest as the jsp file name - use exactly that case sensitive class


as the candidate class. The method setClass introduces the names of the candidate class fields ... The string constant used as the first argument to PersistenceManager.newQuery(String,Object ... as the first argument to PersistenceManager.newQuery(String,Object) to identify that the created


listeners set as the initial listeners for each PersistenceManager created by this PersistenceManagerFactory. Add the parameter listener to the list of instance lifecycle event listeners set as the initial ... of interest. If the classes parameter is specified as null, events for all persistent classes and interfaces


SERIALIZABLE, then the field is not declared as TRANSIENT. If jdoFieldFlags for a field includes SERIALIZABLE, then the field is not declared as TRANSIENT. Since: JDO 1.0 void jdoCopyFields(Object ... an exception if the other instance is not managed by the same StateManager as this instance. Parameters

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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