org.datanucleus.query.evaluator.memory
Class LocateFunctionEvaluator

java.lang.Object
  extended by org.datanucleus.query.evaluator.memory.LocateFunctionEvaluator
All Implemented Interfaces:
InvocationEvaluator

public class LocateFunctionEvaluator
extends java.lang.Object
implements InvocationEvaluator

Evaluator for the function LOCATE(strExpr1, strExpr2, pos).


Field Summary
protected static Localiser LOCALISER
          Localisation utility for output messages
 
Constructor Summary
LocateFunctionEvaluator()
           
 
Method Summary
 java.lang.Object evaluate(InvokeExpression expr, java.lang.Object invokedValue, InMemoryExpressionEvaluator eval)
          Method to evaluate the InvokeExpression, as part of the overall evaluation defined by the InMemoryExpressionEvaluator.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

LOCALISER

protected static final Localiser LOCALISER
Localisation utility for output messages

Constructor Detail

LocateFunctionEvaluator

public LocateFunctionEvaluator()
Method Detail

evaluate

public java.lang.Object evaluate(InvokeExpression expr,
                                 java.lang.Object invokedValue,
                                 InMemoryExpressionEvaluator eval)
Description copied from interface: InvocationEvaluator
Method to evaluate the InvokeExpression, as part of the overall evaluation defined by the InMemoryExpressionEvaluator.

Specified by:
evaluate in interface InvocationEvaluator
Parameters:
expr - The expression for invocation
invokedValue - Value on which we are invoking
eval - The overall evaluator for in-memory
Returns:
The result


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