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Spring Data JPA - PersistenceException thrown

/               org.eclipse.persistence             javax
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Storing Images

What is the best way to store images? As external files? In the database as blobs? Are blobs supported? i use odb to store images, in a complex, persistent uml model based on Eclipse EMF/UML2. to persist the images, i just store an array of bytes (byte[]) representing the encoded images.  i.e
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Unexpected internal exception during set field of an Embeddable to null

] .... at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119
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using DbUnit with ObjectDb

" java.lang.ClassCastException: com.objectdb.jdo.PMImpl cannot be cast to org.eclipse.persistence
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Visibility of changes in Transaction is not visible to a JPA QL Query

> Is there something I am doing wrong, or is this the intended behaviour? I attach the Eclipse projects
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WebService : Failed to get reference value of field using enhanced method

an Eclipse/NetBeans/Maven project with detailed running instructions. I found a solution for this class
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What are the steps of creating small web app?

, JavaDB, BIRT/ Jasper reporting. Tools: Eclipse, Netbeanse, SVN, Git repositories, SQLyog, Glassfish
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Problem on JPA Merge Entity.

under Eclipse. I upload the project archive.   The little sample is based on a web page (http://localhost
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What role is the JDO in ObjectDB?

                 // ObjectDB, DataNucleus     @org.hibernate.annotations.Index(name="name") // Hibernate     @org.eclipse
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GWT RPC is throwing serialization exception when I have object db date value

with embedded jetty in Eclipse. Stack trace is attached. Any ideas? Is there any way to avoid the usage