/*************************GO-LICENSE-START*********************************
* Copyright 2014 ThoughtWorks, Inc.
*
* 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.
*************************GO-LICENSE-END***********************************/
package com.thoughtworks.go.legacywrapper;
import java.util.List;
import java.util.Map;
import com.thoughtworks.go.legacywrapper.SAXBasedExtractor;
import com.thoughtworks.go.legacywrapper.ShouldStopParsingException;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* TODO Dynamic Proxy/Functor
*/
public class CompositeExtractor extends SAXBasedExtractor {
private static final SAXException SHOULD_STOP_EXCEPTION = new ShouldStopParsingException("");
private final List handlers;
public CompositeExtractor(List handlers) {
this.handlers = handlers;
}
public void report(Map resultSet) {
for (int i = 0; i < handlers.size(); i++) {
extractor(i).report(resultSet);
}
}
public void characters(char[] ch, int start, int length) throws SAXException {
for (int i = 0; i < handlers.size(); i++) {
extractor(i).characters(ch, start, length);
}
throwExceptionIfCanStop();
}
public void endElement(String uri, String localName, String qName) throws SAXException {
for (int i = 0; i < handlers.size(); i++) {
extractor(i).endElement(uri, localName, qName);
}
throwExceptionIfCanStop();
}
public void startElement(String uri, String localName, String qName, Attributes attributes)
throws SAXException {
for (int i = 0; i < handlers.size(); i++) {
extractor(i).startElement(uri, localName, qName, attributes);
}
throwExceptionIfCanStop();
}
private void throwExceptionIfCanStop() throws SAXException {
for (int i = 0; i < handlers.size(); i++) {
if (!extractor(i).canStop()) {
return;
}
}
throw SHOULD_STOP_EXCEPTION;
}
private SAXBasedExtractor extractor(final int i) {
return ((SAXBasedExtractor) handlers.get(i));
}
}