Package org.apache.openjpa.persistence.query

Interface Visitable

All Superinterfaces:
Serializable
All Known Implementing Classes:
AbsExpression, AbstractDomainObject, AndPredicate, ArrayExpression, AverageExpression, BetweenExpression, BinaryOperatorExpression, CaseExpressionImpl, ConcatExpression, CountExpression, CurrentTimeExpression, DistinctExpression, DividedByExpression, ElseExpression, EntryExpression, EqualExpression, ExistsExpression, FetchPath, GreaterEqualExpression, GreaterThanExpression, IndexExpression, InExpression, IsEmptyExpression, IsNullExpression, JoinPath, KeyExpression, LengthExpression, LessEqualExpression, LessThanExpression, LikeExpression, LiteralExpression, LocateExpression, LogicalPredicate, LowerExpression, MaxExpression, MemberOfExpression, MinExpression, MinusExpression, NewInstance, NotEqualExpression, OperatorPath, OrderableItem, OrPredicate, ParameterExpression, PlusExpression, QueryDefinitionImpl, RangeExpression, RootPath, SizeExpression, SquareRootExpression, SubStringExpression, SumExpression, TimesExpression, TrimExpression, TypeExpression, UnaryMinusExpression, 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

    Modifier and Type
    Method
    Description
    String
    asExpression(org.apache.openjpa.persistence.query.AliasContext ctx)
    Get a JPQL fragment as used in WHERE clause.
    String
    asJoinable(org.apache.openjpa.persistence.query.AliasContext ctx)
    Gets the string representation in FROM clause.
    String
    asProjection(org.apache.openjpa.persistence.query.AliasContext ctx)
    Gets the string representation in SELECT projection.
    String
    getAliasHint(org.apache.openjpa.persistence.query.AliasContext ctx)
    Gets the hint to be used while creating alias.

  • Method Details

    • asExpression

      String asExpression(org.apache.openjpa.persistence.query.AliasContext ctx)
      Get a JPQL fragment as used in WHERE clause.

    • asProjection

      String asProjection(org.apache.openjpa.persistence.query.AliasContext ctx)
      Gets the string representation in SELECT projection.

    • asJoinable

      String asJoinable(org.apache.openjpa.persistence.query.AliasContext ctx)
      Gets the string representation in FROM clause.

    • getAliasHint

      String getAliasHint(org.apache.openjpa.persistence.query.AliasContext ctx)
      Gets the hint to be used while creating alias.