com.izforge.izpack.rules.AndCondition Maven / Gradle / Ivy
/*
* IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* Copyright 2007 Dennis Reil
*
* Licensed 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 com.izforge.izpack.rules;
import com.izforge.izpack.util.Debug;
import net.n3.nanoxml.XMLElement;
/**
* Defines a condition where both operands have to be true
*
* @author Dennis Reil,
*/
public class AndCondition extends Condition
{
/**
*
*/
private static final long serialVersionUID = -5854944262991488370L;
protected Condition leftoperand;
protected Condition rightoperand;
/**
*
*/
public AndCondition()
{
super();
}
/**
*
*/
public AndCondition(Condition operand1, Condition operand2)
{
this.leftoperand = operand1;
this.rightoperand = operand2;
}
/*
* (non-Javadoc)
*
* @see de.reddot.installer.rules.Condition#readFromXML(net.n3.nanoxml.XMLElement)
*/
public void readFromXML(XMLElement xmlcondition)
{
try
{
if (xmlcondition.getChildrenCount() != 2)
{
Debug.log("and-condition needs two conditions as operands");
return;
}
this.leftoperand = RulesEngine.analyzeCondition(xmlcondition.getChildAtIndex(0));
this.rightoperand = RulesEngine.analyzeCondition(xmlcondition.getChildAtIndex(1));
}
catch (Exception e)
{
Debug.log("missing element in and-condition");
}
}
public boolean isTrue()
{
return leftoperand.isTrue() && rightoperand.isTrue();
}
/* (non-Javadoc)
* @see com.izforge.izpack.rules.Condition#getDependenciesDetails()
*/
public String getDependenciesDetails()
{
StringBuffer details = new StringBuffer();
details.append(this.id);
details.append(" depends on:- ");
details.append(leftoperand.getDependenciesDetails());
details.append("
AND - ");
details.append(rightoperand.getDependenciesDetails());
details.append("
");
return details.toString();
}
}