Module org.eclipse.persistence.jpa

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:

CriteriaBuilder.Coalesce<X>, Expression<X>, Selection<X>, TupleElement<X>, Serializable, InternalExpression, InternalSelection

Enclosing class:

CriteriaBuilderImpl

public class CriteriaBuilderImpl.CoalesceImpl<X>
extends FunctionExpressionImpl<X>
implements 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(Metamodel metamodel, Class<X> resultClass, Expression expressionNode, List<Expression<?>> compoundExpressions)
protected	CoalesceImpl(Metamodel metamodel, Class<X> resultClass, Expression expressionNode, List<Expression<?>> compoundExpressions, String operator)

Method Summary

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

as, in, in, in, in, isNotNull, isNull

Methods inherited from interface jakarta.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface jakarta.persistence.TupleElement

getAlias, getJavaType

Constructor Details

CoalesceImpl

protected CoalesceImpl(Metamodel metamodel,
 Class<X> resultClass,
 Expression expressionNode,
 List<Expression<?>> compoundExpressions)

CoalesceImpl

protected CoalesceImpl(Metamodel metamodel,
 Class<X> resultClass,
 Expression expressionNode,
 List<Expression<?>> compoundExpressions,
 String operator)

Method Details

value

public CriteriaBuilder.Coalesce<X> value(X value)

Add an argument to the coalesce expression.

Specified by:

value in interface CriteriaBuilder.Coalesce<X>

Parameters:

value - value

Returns:

coalesce expression

value

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

Add an argument to the coalesce expression.

Specified by:

value in interface CriteriaBuilder.Coalesce<X>

Parameters:

value - expression

Returns:

coalesce expression