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Remove an entity which attributes were changed - OptimisticLockException

We use an OSGi environment and we have three OSGi plugins. In plugin A an entity is loaded and the entity is passed to plugin B. Plugin B changes an attribute on the entity. Plugin C removes ... exception of the removed entity. If this operations on the entity are executed in only one plugin

BeanCreationException in spring data JPA with objectDB

:448) at org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java ... .java:39) at org.mortbay.jetty.plugin.Jetty6PluginServer.start(Jetty6PluginServer.java:132) at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:371) at org.mortbay.jetty

ClassCastException of same object type

and retrieving objects ok in the main project. However, when I make a plugin for the project, the new ... expected. The problem is in a plugin I am making for the project to do team scoring. (I expect I will have similar problems in other plugins I have in mind) To hopefully make it clearer, the following


</version>         </dependency>            </dependencies>        <build>         <plugins>             <plugin>                 <groupId>org.apache.maven.plugins</groupId>                 <artifactId>maven-compiler-plugin</artifactId>                 <version>3.8.0</version

JBOSS AS7 7.1.1 - Entity not persisted and createNamedQuery fire exception

> in the pom.xml when building the war <plugin>     <groupId>org.apache.maven.plugins</groupId>     <artifactId>maven-war-plugin</artifactId>     <version>2.1.1</version>     <configuration ... *.jar</packagingExcludes>     </configuration> </plugin> The example now runs but Guest still dont

Eclipse/JPA Spring MVC Web Tutorial

above). Eclipse IDE for Java EE Developers. m2eclipse (Maven plugin) including Maven Integration

Step 7: Run the Spring Web App

the embedded Maven Jetty plugin: Right click the project node and select Run As > Maven Build... Enter

Step 1: Install BIRT and ObjectDB Driver

installing the BIRT plugins using the Eclipse Update Manager (updating Eclipse IDE with no Java EE support

Step 7: Run the Spring Web App

you can run the web application using the embedded Maven Jetty plugin: Right click the project node

[ODB1] Chapter 3 - Persistent Classes

ANT for example), but in most Java IDEs a plugin is required to integrate a JDO enhancer into the IDE Build command. A simple alternative that does not require a plugin and works on any Java IDE

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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