org.datanucleus.jpa.criteria
Class ExpressionImpl<T>

java.lang.Object
  org.datanucleus.jpa.criteria.ExpressionImpl<T>

All Implemented Interfaces:

javax.persistence.criteria.Expression<T>, javax.persistence.criteria.Selection<T>, javax.persistence.TupleElement<T>

Direct Known Subclasses:

CoalesceImpl, CompoundSelectionImpl, ParameterExpressionImpl, PathImpl, PredicateImpl, SubqueryImpl

public class ExpressionImpl<T>
extends java.lang.Object
implements javax.persistence.criteria.Selection<T>, javax.persistence.criteria.Expression<T>

Implementation of JPA2 Criteria "Expression".

Constructor Summary

ExpressionImpl(java.lang.Class<T> cls)

Method Summary

javax.persistence.criteria.Selection<T>	alias(java.lang.String alias)
<X> javax.persistence.criteria.Expression<X>	as(java.lang.Class<X> cls)
java.lang.String	getAlias()
java.util.List<javax.persistence.criteria.Selection<?>>	getCompoundSelectionItems()
java.lang.Class<? extends T>	getJavaType()
org.datanucleus.query.expression.Expression	getQueryExpression() Accessor for the underlying (generic) query expression.
javax.persistence.criteria.Predicate	in(java.util.Collection<?> coll)
javax.persistence.criteria.Predicate	in(javax.persistence.criteria.Expression<?>... exprs)
javax.persistence.criteria.Predicate	in(javax.persistence.criteria.Expression<java.util.Collection<?>> coll)
javax.persistence.criteria.Predicate	in(java.lang.Object... expr)
boolean	isCompoundSelection()
javax.persistence.criteria.Predicate	isNotNull()
javax.persistence.criteria.Predicate	isNull()
java.lang.String	toString() Method to print out the expression as it would appear in JPQL single-string form.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ExpressionImpl

public ExpressionImpl(java.lang.Class<T> cls)

Method Detail

as

public <X> javax.persistence.criteria.Expression<X> as(java.lang.Class<X> cls)

Specified by:

as in interface javax.persistence.criteria.Expression<T>

in

public javax.persistence.criteria.Predicate in(java.util.Collection<?> coll)

Specified by:

in in interface javax.persistence.criteria.Expression<T>

in

public javax.persistence.criteria.Predicate in(javax.persistence.criteria.Expression<?>... exprs)

Specified by:

in in interface javax.persistence.criteria.Expression<T>

in

public javax.persistence.criteria.Predicate in(javax.persistence.criteria.Expression<java.util.Collection<?>> coll)

Specified by:

in in interface javax.persistence.criteria.Expression<T>

in

public javax.persistence.criteria.Predicate in(java.lang.Object... expr)

Specified by:

in in interface javax.persistence.criteria.Expression<T>

isNotNull

public javax.persistence.criteria.Predicate isNotNull()

Specified by:

isNotNull in interface javax.persistence.criteria.Expression<T>

isNull

public javax.persistence.criteria.Predicate isNull()

Specified by:

isNull in interface javax.persistence.criteria.Expression<T>

alias

public javax.persistence.criteria.Selection<T> alias(java.lang.String alias)

Specified by:

alias in interface javax.persistence.criteria.Selection<T>

getCompoundSelectionItems

public java.util.List<javax.persistence.criteria.Selection<?>> getCompoundSelectionItems()

Specified by:

getCompoundSelectionItems in interface javax.persistence.criteria.Selection<T>

isCompoundSelection

public boolean isCompoundSelection()

Specified by:

isCompoundSelection in interface javax.persistence.criteria.Selection<T>

getAlias

public java.lang.String getAlias()

Specified by:

getAlias in interface javax.persistence.TupleElement<T>

getJavaType

public java.lang.Class<? extends T> getJavaType()

Specified by:

getJavaType in interface javax.persistence.TupleElement<T>

getQueryExpression

public org.datanucleus.query.expression.Expression getQueryExpression()

Accessor for the underlying (generic) query expression.

Returns:

The query expression

toString

public java.lang.String toString()

Method to print out the expression as it would appear in JPQL single-string form.

Overrides:

toString in class java.lang.Object

Returns:

The JPQL single string form of this expression