org.apache.openjpa.persistence.criteria
Interface CriteriaExpression

All Known Implementing Classes:

CompareByExample, CompoundSelections.Array, CompoundSelections.MultiSelection, CompoundSelections.NewInstance, CompoundSelections.Tuple, ExpressionImpl, Expressions.Abs, Expressions.All, Expressions.Any, Expressions.Avg, Expressions.Between, Expressions.BinarayFunctionalExpression, Expressions.BinaryLogicalExpression, Expressions.Case, Expressions.Cast, Expressions.CastAs, Expressions.Coalesce, Expressions.Concat, Expressions.Constant, Expressions.Count, Expressions.CurrentDate, Expressions.CurrentTime, Expressions.CurrentTimestamp, Expressions.DatabaseFunction, Expressions.Diff, Expressions.Equal, Expressions.Exists, Expressions.FunctionalExpression, Expressions.GreaterThan, Expressions.GreaterThanEqual, Expressions.In, Expressions.Index, Expressions.IsEmpty, Expressions.IsMember, Expressions.IsNotEmpty, Expressions.IsNotNull, Expressions.IsNull, Expressions.Length, Expressions.LessThan, Expressions.LessThanEqual, Expressions.Like, Expressions.ListArgument, Expressions.Locate, Expressions.Lower, Expressions.Max, Expressions.Min, Expressions.Mod, Expressions.Not, Expressions.NotEqual, Expressions.Nullif, Expressions.Product, Expressions.Quotient, Expressions.SimpleCase, Expressions.Size, Expressions.Sqrt, Expressions.SubqueryExpression, Expressions.SubqueryPredicate, Expressions.Substring, Expressions.Sum, Expressions.Trim, Expressions.Type, Expressions.UnaryFunctionalExpression, Expressions.Upper, FetchPathImpl, FromImpl, Joins.AbstractCollection, Joins.Collection, Joins.KeyJoin, Joins.List, Joins.Map, Joins.MapEntry, Joins.MapKey, Joins.Set, Joins.SingularJoin, OrderImpl, ParameterExpressionImpl, PathImpl, PredicateImpl, PredicateImpl.And, PredicateImpl.Or, RootImpl, SelectionImpl, SubqueryImpl

interface CriteriaExpression

Interface to support Visitor pattern and CQL conversion of Criteria Query nodes.

Since:

2.0.0

Author:

Pinaki Poddar

Method Summary

void	acceptVisit(CriteriaExpressionVisitor visitor) Accept visit from the given visitor.
StringBuilder	asProjection(AliasContext q) Get a string representation of this node as a projection term in the context of the given query.
StringBuilder	asValue(AliasContext q) Get a string representation of this node as a value in the context of the given query.
StringBuilder	asVariable(AliasContext q) Get a string representation of this node as a variable in the context of the given query.

Method Detail

acceptVisit

void acceptVisit(CriteriaExpressionVisitor visitor)

Accept visit from the given visitor. The receiver is responsible to propagate the visitor to the constituent sub-nodes if any.

Parameters:

visitor - a processor to walk the nodes of a tree.

asValue

StringBuilder asValue(AliasContext q)

Get a string representation of this node as a value in the context of the given query.

asVariable

StringBuilder asVariable(AliasContext q)

Get a string representation of this node as a variable in the context of the given query.

asProjection

StringBuilder asProjection(AliasContext q)

Get a string representation of this node as a projection term in the context of the given query.