org.apache.openjpa.persistence.criteria
Class Expressions.Exists<X>
java.lang.Object
org.apache.openjpa.persistence.criteria.SelectionImpl<X>
org.apache.openjpa.persistence.criteria.ExpressionImpl<Boolean>
org.apache.openjpa.persistence.criteria.PredicateImpl
org.apache.openjpa.persistence.criteria.Expressions.SubqueryPredicate<X>
org.apache.openjpa.persistence.criteria.Expressions.Exists<X>
- All Implemented Interfaces:
- Expression<Boolean>, Predicate, Selection<Boolean>, TupleElement<Boolean>, CriteriaExpression
- Enclosing class:
- Expressions
public static class Expressions.Exists<X>
- extends Expressions.SubqueryPredicate<X>
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 |
Expressions.Exists
public Expressions.Exists(Subquery<X> x)
toKernelExpression
Expression toKernelExpression(ExpressionFactory factory,
CriteriaQueryImpl<?> q)
- Description copied from class:
ExpressionImpl
- Bridge contract to convert this facade expression to a kernel expression.
- Overrides:
toKernelExpression
in class PredicateImpl
- Parameters:
factory
- creates the kernel expressionq
- the query definition context of this expression
- Returns:
- an equivalent kernel expression
asValue
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
- Overrides:
asValue
in class PredicateImpl
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