org.apache.taglibs.standard.lang.jstl.LessThanOrEqualsOperator Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.taglibs.standard.lang.jstl;
/**
* The implementation of the less than or equals operator
*
* @author Nathan Abramson - Art Technology Group
*/
public class LessThanOrEqualsOperator
extends RelationalOperator {
//-------------------------------------
// Singleton
//-------------------------------------
public static final LessThanOrEqualsOperator SINGLETON =
new LessThanOrEqualsOperator();
//-------------------------------------
/**
* Constructor
*/
public LessThanOrEqualsOperator() {
}
//-------------------------------------
// Expression methods
//-------------------------------------
/**
* Returns the symbol representing the operator
*/
public String getOperatorSymbol() {
return "<=";
}
//-------------------------------------
/**
* Applies the operator to the given value
*/
public Object apply(Object pLeft,
Object pRight,
Object pContext,
Logger pLogger)
throws ELException {
if (pLeft == pRight) {
return Boolean.TRUE;
} else if (pLeft == null ||
pRight == null) {
return Boolean.FALSE;
} else {
return super.apply(pLeft, pRight, pContext, pLogger);
}
}
//-------------------------------------
/**
* Applies the operator to the given double values
*/
public boolean apply(double pLeft,
double pRight,
Logger pLogger) {
return pLeft <= pRight;
}
//-------------------------------------
/**
* Applies the operator to the given long values
*/
public boolean apply(long pLeft,
long pRight,
Logger pLogger) {
return pLeft <= pRight;
}
//-------------------------------------
/**
* Applies the operator to the given String values
*/
public boolean apply(String pLeft,
String pRight,
Logger pLogger) {
return pLeft.compareTo(pRight) <= 0;
}
//-------------------------------------
}