Fast Object Database for Java - with JPA/JDO support

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getPersistenceManagerFactory(jndiLocation, context, loader)

the PersistenceManagerFactory context - the context in which to find the named PersistenceManagerFactory loader
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javax.jdo.spi.JDOImplHelper

it. If not, try to find a constructor for the class with a single String argument. Otherwise, throw
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getPersistenceManagerFactory(jndiLocation, context)

location containing the PersistenceManagerFactory context - the context in which to find the named
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getInstance(bundleName, loader)

Static Method javax.jdo.spi.I18NHelper I18NHelper getInstance( String bundleName, ClassLoader loader ) An instance bound to a bundle. This method uses the specified class loader to find the bundle. Note, the specified class loader must not be null. Parameters: bundleName - the name of the bundle
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javax.jdo.PersistenceManager

of instances managed by this PersistenceManager. The getObjectById method attempts to find an instance
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javax.persistence.LockModeType

.persistence.EntityManager methods that take locks ( lock, find, or refresh) or to the Query
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greatest(x)

Method javax.persistence.criteria.CriteriaBuilder Expression greatest( Expression x ) Create an aggregate expression for finding the greatest of the values (strings, dates, etc). Parameters: x - expression representing input value to greatest operation Returns: greatest expression Since: JPA 2.0
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getInstance(bundleName)

Static Method javax.jdo.spi.I18NHelper I18NHelper getInstance( String bundleName ) An instance bound to a bundle. This method uses the current class loader to find the bundle. Parameters: bundleName - the name of the bundle Returns: the helper instance bound to the bundle Since: JDO 1.0.1
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Should derived fields of an EmbeddedId be manually maintained by app code?

@EmbeddedId, am I responsible for maintaining the derived fields of the @EmbeddedId? I could not find ... the embeddedIds explicitly and the test fails where it attempts to find an item with an @EmbeddedId ... TestException("cannot find ECompoundKeyMapItem 1"); } However it does not fail on Eclipselink. If I alter
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EntityManager JPA or JDO impl and different behavior

. However if I use em.find(SomeObject.class, id) the map is NOT populated. I created a simple test to demonstrate this, however in the simple test it all works fine, and the only difference I can find ... would too, but may have been wrong. That still doesn't change the fact that in my project the em.find(type, id

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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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