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Java 6/7 Performance Comparison

the same code between Java 6 & 7 Tracing it through I can see the bottle neck seems to be at the creation
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java.io.IOException: Illegal seek

The Exception throws between whiles, is a bug? (ObjectDB 2.3.4_05) [09:44:46.992] Caused by: com.objectdb.o.UserException: Failed to read from file '/home/app/resin/webapps/WEB-INF/objectdb/data.odb' [09:44:46.992] at com.objectdb.o.MSG.d(MSG.java:74) [09:44:46.992] at com.objectdb.o.LFL.T
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java.lang.ClassCastException in OSGi runtime when loading data from DB

doubling the classes and having to move data around between the Entities and DTOs. Many thanks in
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JDO PersistenceManager.getSequence() returns null sometimes

", the full package name being used to prefix sequence name to avoid name clashes between different packages
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JDO sequences from ORM file

standard - you're supposed to use the fully qualified name to prevent clashes between sequences
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1

JDOHelper.isDetached failure ?

only for enhanced classes. For a class that is not enhanced ObjectDB cannot tell the difference between
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joining of tables

is that relationships are managed automatically. Just define the relationship between Employee and Address
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JPA 2.0 Criteria API: (When) Fully supported ?

An excerpt from the website of a 3rd party vendor which tries to support JPA 2.0:   "The primary difference between JPA 1.0 and JPA 2.0 implementations is how data is fetched: the JPA 1.0 implementation creates a JPQL query string for fetching while the JPA 2.0 implementation uses Criteria API
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Lazy loading does not work - crud takes long

tomee7.0.0SNAPSHOT,objectdb 2.6.4 The OneToMany Entities are filled with 40.000 Records and they have between 20-40 Columns. It takes over 50s to load all Project Enities that contains the OneToMany Relationships. It should be load lazy but i dont know why the query fetch all the Data
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Left join fetch behaviour doesn't retrieve children?

we ever had). It is difficult to explain the details, but there was a collision between two different fetch operations. Support