org.apache.openjpa.persistence.criteria
Class Joins.SingularJoin<Z,X>

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,X>
                  org.apache.openjpa.persistence.criteria.Joins.SingularJoin<Z,X>

Type Parameters:

Z - type from which joining

X - type of the attribute being joined

All Implemented Interfaces:

Expression<X>, FetchParent<Z,X>, From<Z,X>, Join<Z,X>, Path<X>, Selection<X>, TupleElement<X>, CriteriaExpression

Enclosing class:

Joins

static class Joins.SingularJoin<Z,X>
extends FromImpl<Z,X>
implements Join<Z,X>

Join a single-valued attribute.

Field Summary

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

_member, _parent

Constructor Summary

Joins.SingularJoin(FromImpl<?,Z> from, Members.SingularAttributeImpl<? super Z,X> member, JoinType jt)

Method Summary

StringBuilder	asVariable(AliasContext q) Get a string representation of this node as a variable in the context of the given query.
Attribute<? super Z,?>	getAttribute() Return the metamodel attribute corresponding to the join.
JoinType	getJoinType()
Members.Member<? extends Z,X>	getMember()
FromImpl<?,Z>	getParent()
void	setImplicitContainsTypes(Value val1, Value val2, int op) Set the implicit types of the given values based on the fact that the first is supposed to contain the second.
Expression	toKernelExpression(ExpressionFactory factory, CriteriaQueryImpl<?> c) Bridge contract to convert this facade expression to a kernel expression.
Value	toValue(ExpressionFactory factory, CriteriaQueryImpl<?> c) Convert this path to a kernel path.

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, getModel, 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.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, getModel, 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.SingularJoin

public Joins.SingularJoin(FromImpl<?,Z> from,
                          Members.SingularAttributeImpl<? super Z,X> member,
                          JoinType jt)

Method Detail

getJoinType

public JoinType getJoinType()

Specified by:

getJoinType in interface Join<Z,X>

getParent

public FromImpl<?,Z> getParent()

Specified by:

getParent in interface Join<Z,X>

getMember

public Members.Member<? extends Z,X> getMember()

Overrides:

getMember in class PathImpl<Z,X>

getAttribute

public Attribute<? super Z,?> getAttribute()

Return the metamodel attribute corresponding to the join.

Specified by:

getAttribute in interface Join<Z,X>

Returns:

metamodel attribute type corresponding to the join

toValue

public Value toValue(ExpressionFactory factory,
                     CriteriaQueryImpl<?> c)

Description copied from class: PathImpl

Convert this path to a kernel path.

Overrides:

toValue in class PathImpl<Z,X>

Parameters:

factory - creates the kernel expression

c - the query definition context of this expression

Returns:

an equivalent kernel value

toKernelExpression

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

Description copied from class: ExpressionImpl

Bridge contract to convert this facade expression to a kernel expression.

Overrides:

toKernelExpression in class ExpressionImpl<X>

Parameters:

factory - creates the kernel expression

c - the query definition context of this expression

Returns:

an equivalent kernel expression

setImplicitContainsTypes

public void setImplicitContainsTypes(Value val1,
                                     Value val2,
                                     int op)

Set the implicit types of the given values based on the fact that the first is supposed to contain the second.

asVariable

public StringBuilder asVariable(AliasContext q)

Description copied from interface: CriteriaExpression

Get a string representation of this node as a variable in the context of the given query.

Specified by:

asVariable in interface CriteriaExpression

Overrides:

asVariable in class PathImpl<Z,X>