org.apache.openjpa.persistence.query
Interface Visitable

All Superinterfaces:

Serializable

All Known Implementing Classes:

AbsExpression, AbstractDomainObject, AbstractPath, AbstractVisitable, AllExpression, AndPredicate, AnyExpression, ArrayExpression, AverageExpression, BetweenExpression, BinaryExpressionPredicate, BinaryOperatorExpression, CaseExpressionImpl, ConcatExpression, ConstantExpression, CountExpression, CurrentTimeExpression, DistinctExpression, DividedByExpression, ElseExpression, EntryExpression, EqualExpression, ExistsExpression, ExpressionImpl, FetchPath, GreaterEqualExpression, GreaterThanExpression, IndexExpression, InExpression, IsEmptyExpression, IsNullExpression, JoinPath, KeyExpression, LengthExpression, LessEqualExpression, LessThanExpression, LikeExpression, LiteralExpression, LocateExpression, LogicalPredicate, LowerExpression, MaxExpression, MemberOfExpression, MinExpression, MinusExpression, ModExpression, NavigationPath, NewInstance, NotEqualExpression, OperatorPath, OrderableItem, OrPredicate, ParameterExpression, PlusExpression, QueryDefinitionImpl, QueryExpression, RangeExpression, RootPath, SizeExpression, SomeExpression, SquareRootExpression, SubStringExpression, SumExpression, TimesExpression, TrimExpression, TypeExpression, UnaryExpressionPredicate, UnaryMinusExpression, UnaryOperatorExpression, UpperExpression, ValueExpression, VarArgsExpression

public interface Visitable
extends Serializable

An element of query that is convertible to a JPQL String given a aliasing scheme. QueryDefinition visits each of its element and translates them.

Author:

Pinaki Poddar

Method Summary

String	asExpression(AliasContext ctx) Get a JPQL fragment as used in WHERE clause.
String	asJoinable(AliasContext ctx) Gets the string representation in FROM clause.
String	asProjection(AliasContext ctx) Gets the string representation in SELECT projection.
String	getAliasHint(AliasContext ctx) Gets the hint to be used while creating alias.

Method Detail

asExpression

String asExpression(AliasContext ctx)

Get a JPQL fragment as used in WHERE clause.

asProjection

String asProjection(AliasContext ctx)

Gets the string representation in SELECT projection.

asJoinable

String asJoinable(AliasContext ctx)

Gets the string representation in FROM clause.

getAliasHint

String getAliasHint(AliasContext ctx)

Gets the hint to be used while creating alias.