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FetchType.EAGER

Enum Constant javax.persistence.FetchType EAGER Defines that data must be eagerly fetched. Since: JPA 1.0
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javax.persistence.criteria.JoinType

javax.persistence.criteria Enum JoinType java.lang.Object java.lang.Enum<javax.persistence.criteria.JoinType> javax.persistence.criteria.JoinType Implemented Interfaces: Serializable, Comparable<JoinType> Defines the three types of joins. Right outer joins and right outer fetch joins
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jdoNewObjectIdInstance(o)

: the field value is fetched from the ObjectIdFieldSupplier and passed to the single field identity
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clearGroups()

Method javax.jdo.FetchPlan FetchPlan clearGroups() Remove all active groups leaving no active fetch group. Returns: the FetchPlan Since: JDO 2.0
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FetchPlan.DETACH_UNLOAD_FIELDS

Static Field javax.jdo.FetchPlan int DETACH_UNLOAD_FIELDS For use with PersistenceManager.detachCopy and setDetachmentOptions. Specifies that fields that are loaded but not in the current fetch plan should be unloaded prior to detachment. Since: JDO 2.0
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FetchPlan.DETACH_LOAD_FIELDS

Static Field javax.jdo.FetchPlan int DETACH_LOAD_FIELDS For use with PersistenceManager.detachCopy and setDetachmentOptions. Specifies that fields that are not loaded but are in the current fetch plan should be loaded prior to detachment. Since: JDO 2.0
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javax.jdo.spi.JDOImplHelper

constructor ObjectIdFieldSupplier: the field value is fetched from the ObjectIdFieldSupplier
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FetchPlan.maxFetchDepth

Annotation Element javax.jdo.annotations.FetchPlan int maxFetchDepth The depth of references to instantiate, starting with the root object. Returns: the maxium fetch depth Default value: 1 Since: JDO 2.1
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FetchPlan.fetchSize

Annotation Element javax.jdo.annotations.FetchPlan int fetchSize The number of instances of multi-valued fields retrieved by queries. Returns: the fetch size Default value: 0 Since: JDO 2.1
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addFetchGroups(groups)

Method javax.jdo.PersistenceManagerFactory void addFetchGroups( FetchGroup... groups ) Add the FetchGroups to the set of active fetch groups. FetchGroups are made unmodifiable before being added. FetchGroups that match existing FetchGroups replace the corresponding FetchGroups. The replaced

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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