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

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


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