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

    java.lang.Object
      org.apache.openjpa.kernel.exps.Exp
          org.apache.openjpa.kernel.exps.ContainsExpression
              org.apache.openjpa.kernel.exps.ContainsKeyExpression

All Implemented Interfaces:
  Serializable, Expression

     class ContainsKeyExpression

extends ContainsExpression

Tests that a Map key set contains a value.

Author:
  Abe White

Constructor Summary
`ContainsKeyExpression(Val val1, Val val2)` Constructor.

Method Summary
`protected Collection` | `getCollection(Object obj)` Return the container collection for the given value.

Methods inherited from class org.apache.openjpa.kernel.exps.ContainsExpression
`acceptVisit, eval, eval`

Methods inherited from class org.apache.openjpa.kernel.exps.Exp
`evaluate, evaluate`

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.

  Parameters:
    `val1` - the container value
    `val2` - the containee to test

Method Detail

### getCollection

    protected Collection getCollection(Object obj)

  Description copied from class: `ContainsExpression`
  Return the container collection for the given value.

  Overrides:
    `getCollection` in class `ContainsExpression`

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