org.apache.openjpa.jdbc.kernel.exps
Class ContainsKeyExpression

java.lang.Object
  org.apache.openjpa.jdbc.kernel.exps.CompareEqualExpression
      org.apache.openjpa.jdbc.kernel.exps.EqualExpression
          org.apache.openjpa.jdbc.kernel.exps.ContainsExpression
              org.apache.openjpa.jdbc.kernel.exps.ContainsKeyExpression

All Implemented Interfaces:

Serializable, Exp, Expression

 class ContainsKeyExpression
extends ContainsExpression

Tests whether a map value contains a key.

Author:

Abe White

Constructor Summary

ContainsKeyExpression(Val val1, Val val2)
Constructor.

Method Summary

ExpState

initialize(Select sel, ExpContext ctx, Map contains) Initialize the expression.

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.ContainsExpression

isDirectComparison

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.EqualExpression

appendTo

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.CompareEqualExpression

acceptVisit, appendTo, getValue1, getValue2, selectColumns

Methods inherited from class java.lang.Object

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

Constructor Detail

ContainsKeyExpression

public ContainsKeyExpression(Val val1,
                             Val val2)

Constructor. Supply values to test.

Method Detail

initialize

public ExpState initialize(Select sel,
                           ExpContext ctx,
                           Map contains)

Description copied from interface: Exp

Initialize the expression. This method should recursively initialize any sub-expressions or values.

Specified by:

initialize in interface Exp

Overrides:

initialize in class ContainsExpression

contains - map of relation paths to the number of times the paths appear in a contains() expression; used to ensure paths used for contains() within the same AND expression used different aliases