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PersistenceException UserException: Failed to validate persistence.xml

: Failed to validate xml file C:\!heatboxes-web\build\web\WEB-INF\classes\META-INF\persistence.xml ... :\!heatboxes-web\build\web\WEB-INF\classes\META-INF\persistence.xml: at com.objectdb.o.MSG.d(MSG.java:74 ... > Failed to validate xml file C:\!heatboxes-web\build\web\WEB-INF\classes\META-INF\persistence.xml
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Cannot cast com.objectdb.jpa.Provider to PersistenceProvider

Hi! I'm trying to get ObjectDB 2.5.1_1 work with stable Glassfish 4 in a Java EE 7 NetBeans project ... :356) at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1708) at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1611) at org.glassfish
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Entity is not related to ObjectDB, but i get exception from ObjectDB

-SNAPSHOT.jar:] at granat.dp.web.action.StartDialogAction.execute(StartDialogAction.java:97) [dp.transfer-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at granat.dp.web.action.AbstractEventAction.run(AbstractEventAction.java:90) [dp.transfer-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at granat.dp.web.action.StartAction.execute
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How to package orm.xml when using EJB in WAR?

for postgres). However, when a different web project (WAR file), which declares a dependency ... Hi, I have database utility classes in one project, the id's use sequences declared in an orm.xml ... when the (EJB) project is built. When that EJB is deployed to e.g. GlassFish 3.1.1 all apperar to be OK
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What's next?

/JPA projects simply by modifying this sample program. Reading the Next Chapters
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Posting Sample Code

should have a no-arg public or protected constructor, An entity class must be a top level class, The project does
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Step 4: Run the Application

You can run the application now by right clicking the Main node (in the [Projects] window) and selecting Run File. The expected output in the [Output] window, is: Total Points: 1000 Average X: 499.5 (0,0) (1,1) (2,2) (3,3) : : (998,998) (999,999) When you run the application
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Step 3: Define an EJB Session Bean

Operations on the database will be performed by an instance of a session bean (EJB) class that we will define in this step: Open the [New Session Bean] dialog box by right clicking the guest package node (in the [Projects] window), selecting New > Other... > Java EE (or Enterprise JavaBeans
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Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the tutorial package node (in the [Projects] window) and selecting New > Java Class... Enter Point as the class name - use exactly that case sensitive
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Getting Started with JPA

: In addition the demonstrated application is available as a Maven project:

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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