Class ConcatFunction

java.lang.Object

org.datanucleus.store.query.inmemory.method.ConcatFunction

All Implemented Interfaces:

InvocationEvaluator

public class ConcatFunction
extends Object
implements InvocationEvaluator

Evaluator for the function CONCAT(strExpr1, strExpr2).

Constructor Summary

Constructors

Constructor	Description
ConcatFunction()

Method Summary

Modifier and Type	Method	Description
Object	evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval)	Method to evaluate the InvokeExpression, as part of the overall evaluation defined by the InMemoryExpressionEvaluator.

Methods inherited from class Object

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

Constructor Details

ConcatFunction

public ConcatFunction()

Method Details

evaluate

public Object evaluate(InvokeExpression expr,
 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