maven-xml/src/main/java/org/apache/maven/xml/sax/filter/RelativePathXMLFilter.java

package org.apache.maven.xml.sax.filter;

/*
 * 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.
 */

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

/**
 * Remove relativePath element, has no value for consumer pom
 * 
 * @author Robert Scholte
 * @since 4.0.0
 */
class RelativePathXMLFilter
    extends AbstractEventXMLFilter
{
    private boolean parsingParent;
    
    private String state;
    
    RelativePathXMLFilter()
    {
        super();
    }

    RelativePathXMLFilter( AbstractSAXFilter parent )
    {
        super( parent );
    }
    
    @Override
    public void startElement( String uri, final String localName, String qName, Attributes atts )
        throws SAXException
    {
        if ( !parsingParent && "parent".equals( localName ) )
        {
            parsingParent = true;
        }

        if ( parsingParent )
        {
            state = localName;
        }
        
        super.startElement( uri, localName, qName, atts );
    }
    
    @Override
    public void endElement( String uri, String localName, String qName )
        throws SAXException
    {
        if ( parsingParent )
        {
            switch ( localName )
            {
                case "parent":
                    executeEvents();
                    
                    parsingParent = false;
                    break;
                default:
                    break;
            }
        }
        
        super.endElement( uri, localName, qName );

        // for this simple structure resetting to parent it sufficient
        state = "parent";
    }

    @Override
    protected boolean isParsing()
    {
        return parsingParent;
    }

    @Override
    protected String getState()
    {
        return state;
    }

    @Override
    protected boolean acceptEvent( String state )
    {
        return !"relativePath".equals( state );
    }
}