org.eclipse.persistence.internal.jpa.querydef

Interface InternalExpression

All Known Implementing Classes:

BasicCollectionJoinImpl, BasicListJoinImpl, BasicMapJoinImpl, BasicSetJoinImpl, CollectionJoinImpl, CompoundExpressionImpl, CriteriaBuilderImpl.CaseImpl, CriteriaBuilderImpl.CoalesceImpl, CriteriaBuilderImpl.SimpleCaseImpl, ExpressionImpl, FromImpl, FunctionExpressionImpl, InImpl, JoinImpl, ListJoinImpl, MapJoinImpl, ParameterExpressionImpl, PathImpl, PredicateImpl, RootImpl, SetJoinImpl, SubQueryImpl

public interface InternalExpression

Purpose: Represents an Expression in the Criteria API implementation heirarchy.

Description: Expressions are expression nodes that can not be joined from and may or not be the result of a Path expression. The SubQuery is a special type of expression that requires certain methods but can not extend ExpressionImpl. This interface provide a common API.

Since:

EclipseLink 1.2

Author:

gyorke

See Also:

Expression

Method Summary

Modifier and Type	Method and Description
boolean	isCompoundExpression()
boolean	isExpression()
boolean	isJunction()
boolean	isLiteral()
boolean	isParameter()
boolean	isPredicate()
boolean	isSubquery()

Method Detail

isPredicate

boolean isPredicate()

isCompoundExpression

boolean isCompoundExpression()

isExpression

boolean isExpression()

isLiteral

boolean isLiteral()

isParameter

boolean isParameter()

isSubquery

boolean isSubquery()

isJunction

boolean isJunction()