org.apache.openjpa.persistence.criteria
Class Joins.Map<Z,K,V>

java.lang.Object
  org.apache.openjpa.persistence.criteria.SelectionImpl<X>
      org.apache.openjpa.persistence.criteria.ExpressionImpl<X>
          org.apache.openjpa.persistence.criteria.PathImpl<Z,X>
              org.apache.openjpa.persistence.criteria.FromImpl<Z,E>
                  org.apache.openjpa.persistence.criteria.Joins.AbstractCollection<Z,Map<K,V>,V>
                      org.apache.openjpa.persistence.criteria.Joins.Map<Z,K,V>

Type Parameters:

Z - the type from which being joined

K - the type of the the map attribute keys

V - the type of the the map attribute values

All Implemented Interfaces:

Expression<V>, FetchParent<Z,V>, From<Z,V>, Join<Z,V>, MapJoin<Z,K,V>, Path<V>, PluralJoin<Z,Map<K,V>,V>, Selection<V>, TupleElement<V>, CriteriaExpression

Enclosing class:

Joins

static class Joins.Map<Z,K,V>
extends Joins.AbstractCollection<Z,Map<K,V>,V>
implements MapJoin<Z,K,V>

Join a java.util.Map<K,V> type attribute.

Field Summary

Fields inherited from class org.apache.openjpa.persistence.criteria.PathImpl

_member, _parent

Constructor Summary

Joins.Map(FromImpl<?,Z> parent, Members.MapAttributeImpl<? super Z,K,V> member, JoinType jt)

Method Summary

Expression<Map.Entry<K,V>>	entry()
MapAttribute<? super Z,K,V>	getModel() Returns the bindable object that corresponds to the path expression.
Join<Map<K,V>,K>	joinKey()
Join<Map<K,V>,K>	joinKey(JoinType jt) Create a pseudo-attribute of a pseudo-managed type for java.util.Map<K,V> to represent its keys of type java.util.Set<V>.
Path<K>	key()
Expression	toKernelExpression(ExpressionFactory factory, CriteriaQueryImpl<?> c) Convert this path to a join expression.
Path<V>	value()

Methods inherited from class org.apache.openjpa.persistence.criteria.Joins.AbstractCollection

asVariable, getAttribute, getJoinType, getMemberClassMetaData, getParent, toValue

Methods inherited from class org.apache.openjpa.persistence.criteria.FromImpl

acceptVisit, assertJoinable, fetch, fetch, fetch, fetch, fetch, fetch, getCorrelationParent, getFetches, getJoins, getType, join, join, join, join, join, join, join, join, join, join, join, join, joinCollection, joinCollection, joinList, joinList, joinMap, joinMap, joinSet, joinSet

Methods inherited from class org.apache.openjpa.persistence.criteria.PathImpl

asValue, get, get, get, get, getCorrelatedJoin, getCorrelatedPath, getCorrelatedRoot, getEmbeddedFieldMetaData, getInnermostMember, getInnermostParentPath, getMember, getParentPath, inSubquery, isCorrelated, setCorrelatedPath, traversePath, type

Methods inherited from class org.apache.openjpa.persistence.criteria.ExpressionImpl

as, in, in, in, in, isNotNull, isNull

Methods inherited from class org.apache.openjpa.persistence.criteria.SelectionImpl

alias, asProjection, assertValidName, getAlias, getCompoundSelectionItems, getJavaType, isAliased, isAutoAliased, isCompoundSelection, setAutoAlias

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.persistence.criteria.Join

getAttribute, getJoinType, getParent

Methods inherited from interface javax.persistence.criteria.From

getCorrelationParent, getJoins, isCorrelated, join, join, join, join, join, join, join, join, join, join, join, join, joinCollection, joinCollection, joinList, joinList, joinMap, joinMap, joinSet, joinSet

Methods inherited from interface javax.persistence.criteria.Path

get, get, get, get, getParentPath, type

Methods inherited from interface javax.persistence.criteria.Expression

as, in, in, in, in, isNotNull, isNull

Methods inherited from interface javax.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface javax.persistence.TupleElement

getAlias, getJavaType

Methods inherited from interface javax.persistence.criteria.FetchParent

fetch, fetch, fetch, fetch, fetch, fetch, getFetches

Constructor Detail

Joins.Map

public Joins.Map(FromImpl<?,Z> parent,
                 Members.MapAttributeImpl<? super Z,K,V> member,
                 JoinType jt)

Method Detail

getModel

public MapAttribute<? super Z,K,V> getModel()

Description copied from class: PathImpl

Returns the bindable object that corresponds to the path expression.

Specified by:

getModel in interface MapJoin<Z,K,V>

Specified by:

getModel in interface Path<V>

Specified by:

getModel in interface PluralJoin<Z,Map<K,V>,V>

Overrides:

getModel in class Joins.AbstractCollection<Z,Map<K,V>,V>

joinKey

public Join<Map<K,V>,K> joinKey()

joinKey

public Join<Map<K,V>,K> joinKey(JoinType jt)

Create a pseudo-attribute of a pseudo-managed type for java.util.Map<K,V> to represent its keys of type java.util.Set<V>.

entry

public Expression<Map.Entry<K,V>> entry()

Specified by:

entry in interface MapJoin<Z,K,V>

key

public Path<K> key()

Specified by:

key in interface MapJoin<Z,K,V>

value

public Path<V> value()

Specified by:

value in interface MapJoin<Z,K,V>

toKernelExpression

public Expression toKernelExpression(ExpressionFactory factory,
                                     CriteriaQueryImpl<?> c)

Description copied from class: Joins.AbstractCollection

Convert this path to a join expression.

Overrides:

toKernelExpression in class Joins.AbstractCollection<Z,Map<K,V>,V>

Parameters:

factory - creates the kernel expression

c - the query definition context of this expression

Returns:

an equivalent kernel expression