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	JPA 2 Annotations JPA defines dozens of annotations that can be divided into the following groups: Annotations for JPA aware classes: annotations" select="Class Modifiers\|JPQL Queries"> Annotations for fields in JPA persistable classes:
	JPA Annotations for Relationships . The four relationship modes are represented by the following annotations: annotations/relationship" select="ManyToMany\|ManyToOne\|OneToMany\|OneToOne"> Unlike ORM JPA implementations, ObjectDB does not enforce specifying any of the annotations
	JPA Annotations for Fields annotations: annotations/field" select="Basic\|Embedded\|ElementCollection\|Id\|EmbeddedId\|Version\|Transient"> Additional annotations (and enum) are designated for enum fields: annotations/field" select="Enumerated
	JPA Annotations for Classes JPA defines three types of persistable classes which are set by the following annotations: annotations/class" select="Entity\|MappedSuperclass\|Embeddable">annotations in detail. Entity and mapped super classes can be further configured by annotations
	JPA Annotations for Value Generation -book-toc path="api/java/jpa/annotations/value" select="GeneratedValue\|GenerationType"> The @GeneratedValue annotation can also reference a value generator, which is defined at the class level by using one of the following annotations:
	JPA Annotations for Callback Methods The following annotations can mark methods as JPA callback methods: annotations/callback"> The Lifecycle Events section of the ObjectDB Manual explains how to use all these annotations on callback methods and with listener classes.
	JPA Annotations for JPQL Queries The following annotations are used to define static named JPA queries: annotations/jpql"> The JPA Named Queries section of the ObjectDB Manual explains and demonstrates how to use these annotations to define named JPQL queries.
	JPA Annotations for SQL Queries The following JPA annotations are designated for SQL queries on relational databases: annotations/sql"> ObjectDB supports only the preferred JPA query language, JPQL, and silently ignores all the above annotations.
	JDO Annotations for Classes JDO supports two modes of persistable classes that can be set by the following annotations: annotations/class" select="PersistenceCapable\|EmbeddedOnly"> annotations
	JDO Annotations for Index Definition The following annotations are used to define indexes on persistent fields: annotations/indexes"> The Index Definition section of the ObjectDB manual explains these annotations in details.


	JPA 2 Annotations JPA defines dozens of annotations that can be divided into the following groups: Annotations for JPA aware classes: annotations" select="Class Modifiers\|JPQL Queries"> Annotations for fields in JPA persistable classes:
	JPA Annotations for Relationships . The four relationship modes are represented by the following annotations: annotations/relationship" select="ManyToMany\|ManyToOne\|OneToMany\|OneToOne"> Unlike ORM JPA implementations, ObjectDB does not enforce specifying any of the annotations
	JPA Annotations for Fields annotations: annotations/field" select="Basic\|Embedded\|ElementCollection\|Id\|EmbeddedId\|Version\|Transient"> Additional annotations (and enum) are designated for enum fields: annotations/field" select="Enumerated
	JPA Annotations for Classes JPA defines three types of persistable classes which are set by the following annotations: annotations/class" select="Entity\|MappedSuperclass\|Embeddable">annotations in detail. Entity and mapped super classes can be further configured by annotations
	JPA Annotations for Value Generation -book-toc path="api/java/jpa/annotations/value" select="GeneratedValue\|GenerationType"> The @GeneratedValue annotation can also reference a value generator, which is defined at the class level by using one of the following annotations:
	JPA Annotations for Callback Methods The following annotations can mark methods as JPA callback methods: annotations/callback"> The Lifecycle Events section of the ObjectDB Manual explains how to use all these annotations on callback methods and with listener classes.
	JPA Annotations for JPQL Queries The following annotations are used to define static named JPA queries: annotations/jpql"> The JPA Named Queries section of the ObjectDB Manual explains and demonstrates how to use these annotations to define named JPQL queries.
	JPA Annotations for SQL Queries The following JPA annotations are designated for SQL queries on relational databases: annotations/sql"> ObjectDB supports only the preferred JPA query language, JPQL, and silently ignores all the above annotations.
	JDO Annotations for Classes JDO supports two modes of persistable classes that can be set by the following annotations: annotations/class" select="PersistenceCapable\|EmbeddedOnly"> annotations
	JDO Annotations for Index Definition The following annotations are used to define indexes on persistent fields: annotations/indexes"> The Index Definition section of the ObjectDB manual explains these annotations in details.