/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jms.selector;
import javax.jms.InvalidSelectorException;
import javax.jms.JMSException;
import javax.jms.Message;
/**
* The base selector.
*/
public class BetweenSelector extends Selector {
private Selector _left;
private Selector _low;
private Selector _high;
BetweenSelector(Selector left, Selector low, Selector high)
throws JMSException
{
_left = left;
_low = low;
_high = high;
if (! _left.isUnknown() && ! _left.isNumber())
throw new InvalidSelectorException(L.l("'{0}' must have a numeric value for comparison.",
this));
if (! _low.isUnknown() && ! _low.isNumber())
throw new InvalidSelectorException(L.l("'{0}' must have a numeric value for comparison.",
this));
if (! _high.isUnknown() && ! _high.isNumber())
throw new InvalidSelectorException(L.l("'{0}' must have a numeric value for comparison.",
this));
}
/**
* Evaluate the message. The boolean literal selector returns
* the value of the boolean.
*/
Object evaluate(Message message)
throws JMSException
{
Object lobj = _left.evaluate(message);
if (! (lobj instanceof Number))
return NULL;
Object lowObj = _low.evaluate(message);
Object highObj = _high.evaluate(message);
if (! (lowObj instanceof Number) || ! (highObj instanceof Number))
return NULL;
if (isInteger(lobj) && isInteger(lowObj) && isInteger(highObj)) {
long lvalue = toLong(lobj);
long low = toLong(lowObj);
long high = toLong(highObj);
return toBoolean(low <= lvalue && lvalue <= high);
}
else {
double lvalue = toDouble(lobj);
double low = toDouble(lowObj);
double high = toDouble(highObj);
return toBoolean(low <= lvalue && lvalue <= high);
}
}
}