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## 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>`

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