org.apache.openjpa.kernel.exps
Class ValuePath

java.lang.Object
  org.apache.openjpa.kernel.exps.Val
      org.apache.openjpa.kernel.exps.CandidatePath
          org.apache.openjpa.kernel.exps.ValuePath

All Implemented Interfaces:

Serializable, Path, Value

 class ValuePath
extends CandidatePath

Represents a path that begins with a variable or parameter.

Author:

Abe White

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.openjpa.kernel.exps.CandidatePath

CandidatePath.Traversal

Field Summary

Fields inherited from class org.apache.openjpa.kernel.exps.CandidatePath

_actions, _correlationVar

Constructor Summary

ValuePath(Val val)
Constructor.

Method Summary

void	acceptVisit(ExpressionVisitor visitor) Accept a visit from a tree visitor.
protected Object	eval(Object candidate, Object orig, StoreContext ctx, Object[] params) Return this value for the given candidate.
Class	getCandidateType()

Methods inherited from class org.apache.openjpa.kernel.exps.CandidatePath

castTo, equals, get, get, get, getCorrelationVar, getSchemaAlias, getType, getXmlMapping, hashCode, last, setImplicitType, setSchemaAlias, setSubqueryContext

Methods inherited from class org.apache.openjpa.kernel.exps.Val

eval, evaluate, evaluate, getAlias, getMetaData, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, setMetaData

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.openjpa.kernel.exps.Value

getAlias, getMetaData, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, setMetaData

Constructor Detail

ValuePath

public ValuePath(Val val)

Constructor. Supply context value.

Method Detail

getCandidateType

public Class getCandidateType()

Overrides:

getCandidateType in class CandidatePath

eval

protected Object eval(Object candidate,
                      Object orig,
                      StoreContext ctx,
                      Object[] params)

Description copied from class: Val

Return this value for the given candidate.

Overrides:

eval in class CandidatePath

acceptVisit

public void acceptVisit(ExpressionVisitor visitor)

Description copied from interface: Value

Accept a visit from a tree visitor.

Specified by:

acceptVisit in interface Value

Overrides:

acceptVisit in class Val