Package org.eclipse.persistence.internal.jpa.querydef

Class CriteriaBuilderImpl.CoalesceImpl<X>

java.lang.Object

org.eclipse.persistence.internal.jpa.querydef.SelectionImpl<X>

org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl<X>

org.eclipse.persistence.internal.jpa.querydef.FunctionExpressionImpl<X>

org.eclipse.persistence.internal.jpa.querydef.CriteriaBuilderImpl.CoalesceImpl<X>

All Implemented Interfaces:

java.io.Serializable, javax.persistence.criteria.CriteriaBuilder.Coalesce<X>, javax.persistence.criteria.Expression<X>, javax.persistence.criteria.Selection<X>, javax.persistence.TupleElement<X>, InternalExpression, InternalSelection

Enclosing class:

CriteriaBuilderImpl

public class CriteriaBuilderImpl.CoalesceImpl<X>
extends FunctionExpressionImpl<X>
implements javax.persistence.criteria.CriteriaBuilder.Coalesce<X>

Interface used to build coalesce expressions. A coalesce expression is equivalent to a case expression that returns null if all its arguments evaluate to null, and the value of its first non-null argument otherwise.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.FunctionExpressionImpl

expressions, operator

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl

isLiteral, literal, metamodel

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.SelectionImpl

alias, currentNode, javaType

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CoalesceImpl(javax.persistence.metamodel.Metamodel metamodel, java.lang.Class<X> resultClass, org.eclipse.persistence.expressions.Expression expressionNode, java.util.List<javax.persistence.criteria.Expression<?>> compoundExpressions)
protected	CoalesceImpl(javax.persistence.metamodel.Metamodel metamodel, java.lang.Class<X> resultClass, org.eclipse.persistence.expressions.Expression expressionNode, java.util.List<javax.persistence.criteria.Expression<?>> compoundExpressions, java.lang.String operator)

Method Summary

Modifier and Type	Method	Description
javax.persistence.criteria.CriteriaBuilder.Coalesce<X>	value(javax.persistence.criteria.Expression<? extends X> value)	Add an argument to the coalesce expression.
javax.persistence.criteria.CriteriaBuilder.Coalesce<X>	value(X value)	Add an argument to the coalesce expression.

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.FunctionExpressionImpl

findRootAndParameters, getChildExpressions, getOperation, isCompoundExpression, isExpression

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl

as, buildExpressionForAs, in, in, in, in, isJunction, isLiteral, isNotNull, isNull, isParameter, isPredicate, isSubquery

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.SelectionImpl

alias, getAlias, getCompoundSelectionItems, getCurrentNode, getJavaType, isCompoundSelection, isConstructor, isFrom, isRoot, setJavaType

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.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

Constructor Detail

CoalesceImpl

protected CoalesceImpl(javax.persistence.metamodel.Metamodel metamodel,
                       java.lang.Class<X> resultClass,
                       org.eclipse.persistence.expressions.Expression expressionNode,
                       java.util.List<javax.persistence.criteria.Expression<?>> compoundExpressions)

CoalesceImpl

protected CoalesceImpl(javax.persistence.metamodel.Metamodel metamodel,
                       java.lang.Class<X> resultClass,
                       org.eclipse.persistence.expressions.Expression expressionNode,
                       java.util.List<javax.persistence.criteria.Expression<?>> compoundExpressions,
                       java.lang.String operator)

Method Detail

value

public javax.persistence.criteria.CriteriaBuilder.Coalesce<X> value(X value)

Add an argument to the coalesce expression.

Specified by:

value in interface javax.persistence.criteria.CriteriaBuilder.Coalesce<X>

Parameters:

value - value

Returns:

coalesce expression

value

public javax.persistence.criteria.CriteriaBuilder.Coalesce<X> value(javax.persistence.criteria.Expression<? extends X> value)

Add an argument to the coalesce expression.

Specified by:

value in interface javax.persistence.criteria.CriteriaBuilder.Coalesce<X>

Parameters:

value - expression

Returns:

coalesce expression