About mapping

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JPA Doc
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getPluralAttributes()

Method javax.persistence.metamodel.ManagedType Set> getPluralAttributes() Return all multi-valued attributes (Collection-, Set-, List-, and Map-valued attributes ... -, Set-, List-, and Map-valued attributes Since: JPA 2.0
JPA Doc
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getProperties()

Method javax.persistence.EntityManagerFactory Map getProperties() Get the properties and associated values that are in effect for the entity manager factory. Changing the contents of the map does not change the configuration in effect. Returns: properties Throws
JPA Doc
3

getSupertype()

Method javax.persistence.metamodel.IdentifiableType IdentifiableType getSupertype() Return the identifiable type that corresponds to the most specific mapped superclass or entity extended by the entity or mapped superclass. Returns: supertype of identifiable type or null if no such supertype Since: JPA 2.0
JDO Doc
3

javax.jdo.annotations.Joins

javax.jdo.annotations Annotation Joins Target: Classes Annotation for a group of joins. Since: JDO 2.1 Join[] value The join definitions used for the mapping of this type. The join definitions used for the mapping of this type. Joins for secondary tables are usually defined at the type level
JPA Doc
3

javax.persistence.Column

javax.persistence Annotation Column Target: Fields (including property get methods) Is used to specify the mapped column for a persistent property or field. If no Column annotation is specified ... . This constraint applies in addition to any constraint entailed by primary key mapping and to constraints
JPA Doc
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javax.persistence.EntityListeners

javax.persistence Annotation EntityListeners Target: Classes Specifies the callback listener classes to be used for an entity or mapped superclass. This annotation may be applied to an entity class or mapped superclass. Since: JPA 1.0 Learn how to define and use entity listeners in Chapter 3
JPA Doc
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javax.persistence.Enumerated

mapping an enum type. (Optional) The type used in mapping an enum type. Default value: javax.persistence.EnumType.ORDINAL Since: JPA 1.0
JPA Doc
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javax.persistence.InheritanceType

A strategy in which fields that are specific to a subclass are mapped to a separate table ... . A strategy in which fields that are specific to a subclass are mapped to a separate table than the fields
JPA Doc
3

javax.persistence.ManyToMany

. When the target collection is a java.util.Map, the cascade element applies to the map value. Defaults
JPA Doc
3

javax.persistence.metamodel.Attribute

collection-valued (represents a Collection, Set, List, or Map). Is the attribute collection-valued (represents a Collection, Set, List, or Map). Returns: boolean indicating whether the attribute is collection-valued Since: JPA 2.0