Class Expressions.Constant<X>

  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.Expressions.Constant<X>
All Implemented Interfaces:
Expression<X>, Selection<X>, TupleElement<X>, CriteriaExpression
Enclosing class:

public static class Expressions.Constant<X>
extends ExpressionImpl<X>

Field Summary
 Object arg
Constructor Summary
Expressions.Constant(Class<X> t, X x)
Expressions.Constant(X x)
Method Summary
 void acceptVisit(CriteriaExpressionVisitor visitor)
          Accept visit from the given visitor.
 StringBuilder asValue(AliasContext q)
          Get a string representation of this node as a value in the context of the given query.
 Value toValue(ExpressionFactory factory, CriteriaQueryImpl<?> q)
          Bridge contract to convert this facade expression to a kernel value.
Methods inherited from class org.apache.openjpa.persistence.criteria.ExpressionImpl
as, in, in, in, in, isNotNull, isNull, toKernelExpression
Methods inherited from class org.apache.openjpa.persistence.criteria.SelectionImpl
alias, asProjection, assertValidName, asVariable, 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.Selection
alias, getCompoundSelectionItems, isCompoundSelection
Methods inherited from interface javax.persistence.TupleElement
getAlias, getJavaType

Field Detail


public final Object arg
Constructor Detail


public Expressions.Constant(Class<X> t,
                            X x)


public Expressions.Constant(X x)
Method Detail


public Value toValue(ExpressionFactory factory,
                     CriteriaQueryImpl<?> q)
Description copied from class: ExpressionImpl
Bridge contract to convert this facade expression to a kernel value.

Specified by:
toValue in class ExpressionImpl<X>
factory - creates the kernel expression
q - the query definition context of this expression
an equivalent kernel value


public void acceptVisit(CriteriaExpressionVisitor visitor)
Description copied from interface: CriteriaExpression
Accept visit from the given visitor. The receiver is responsible to propagate the visitor to the constituent sub-nodes if any.

Specified by:
acceptVisit in interface CriteriaExpression
acceptVisit in class SelectionImpl<X>
visitor - a processor to walk the nodes of a tree.


public StringBuilder asValue(AliasContext q)
Description copied from interface: CriteriaExpression
Get a string representation of this node as a value in the context of the given query.

Specified by:
asValue in interface CriteriaExpression
asValue in class SelectionImpl<X>

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