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, InternalExpression, InternalSelection

Enclosing class:

CriteriaBuilderImpl

public static class CriteriaBuilderImpl.CoalesceImpl<X>
extends FunctionExpressionImpl<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 and Description
protected	CoalesceImpl(Metamodel metamodel, java.lang.Class<X> resultClass, org.eclipse.persistence.expressions.Expression expressionNode, java.util.List<<any>> compoundExpressions)
protected	CoalesceImpl(Metamodel metamodel, java.lang.Class<X> resultClass, org.eclipse.persistence.expressions.Expression expressionNode, java.util.List<<any>> compoundExpressions, java.lang.String operator)

Method Summary

Modifier and Type	Method and Description
<any>	value(<any> value) Add an argument to the coalesce expression.
<any>	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

Methods inherited from class java.lang.Object

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

Constructor Detail

CoalesceImpl

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

CoalesceImpl

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

Method Detail

value

public <any> value(X value)

Add an argument to the coalesce expression.

Parameters:

value - value

Returns:

coalesce expression

value

public <any> value(<any> value)

Add an argument to the coalesce expression.

Parameters:

value - expression

Returns:

coalesce expression