About mapping

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JPA Doc
3

javax.persistence.Version

more than one Version property or field will not be portable. The Version property should be mapped to the primary table for the entity class; applications that map the Version property to a table
JPA Doc
3

key()

Method javax.persistence.criteria.MapJoin Path key() Create a path expression that corresponds to the map key. Returns: path corresponding to map key Since: JPA 2.0
JDO Doc
3

Key.embeddedMapping

Annotation Element javax.jdo.annotations.Key Embedded[] embeddedMapping The embedded mapping for the key. Returns: the embedded mapping for the key Default value: {} Since: JDO 2.1
JPA Doc
3

ManyToMany.cascade

Annotation Element javax.persistence.ManyToMany CascadeType[] cascade (Optional) The operations that must be cascaded to the target of the association. When the target collection is a java.util.Map, the cascade element applies to the map value. Defaults to no operations being cascaded. Default value: {} Since: JPA 1.0
JPA Doc
3

MapKeyEnumerated.value

Annotation Element javax.persistence.MapKeyEnumerated EnumType value (Optional) The type used in mapping a map key enum type. Default value: javax.persistence.EnumType.ORDINAL Since: JPA 2.0
JPA Doc
3

OneToMany.cascade

Annotation Element javax.persistence.OneToMany CascadeType[] cascade (Optional) The operations that must be cascaded to the target of the association. Defaults to no operations being cascaded. When the target collection is a java.util.Map, the cascade element applies to the map value. Default value: {} Since: JPA 1.0
JPA Doc
3

PessimisticLockScope.NORMAL

is used, or if the entity is otherwise mapped to a secondary table, this entails locking the row(s ... contain the foreign key (such as relationships that are mapped to join tables or unidirectional
JPA Doc
3

value()

Method javax.persistence.criteria.MapJoin Path value() Create a path expression that corresponds to the map value. This method is for stylistic use only: it just returns this. Returns: path corresponding to the map value Since: JPA 2.0
JDO Doc
3

Value.embeddedMapping

Annotation Element javax.jdo.annotations.Value Embedded[] embeddedMapping The embedded mapping for the value. Returns: the embedded mapping for the value Default value: {} Since: JDO 2.1
Forum
3

Unable to convert 1.x odb file to 2.x

.UserAttributesMap, field "map" -> 12 broken references More information can be found in the log Relevant ... .UserAttributesMap is not enhanced. ... [2014-05-06 10:58:36 #285 *] Broken ref: map@eu ... *] Broken ref: map@eu.extech.quant.data.user_attribute.UserAttributesMap#839609 -> 2329077 [2014-05