jlibs.core.graph.PredicateConvertor Maven / Gradle / Ivy
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/**
* Copyright 2015 Santhosh Kumar Tekuri
*
* The JLibs authors license 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 jlibs.core.graph;
/**
* @author Santhosh Kumar T
*/
public class PredicateConvertor implements Convertor{
protected Navigator2 navigator;
protected Convertor delegate;
public PredicateConvertor(Navigator2 navigator, Convertor delegate){
this.navigator = navigator;
this.delegate = delegate;
}
@Override
public String convert(E source){
String name = delegate.convert(source);
E parent = navigator.parent(source);
if(parent==null)
return name;
Sequence children = navigator.children(parent);
int predicate = 1;
while(children.hasNext()){
E child = children.next();
if(child.equals(source))
break;
if(name.equals(delegate.convert(child)))
predicate++;
}
return name += "["+predicate+']';
}
}