com.liferay.portal.kernel.xml.ElementHandler.java Source code

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Here is the source code for com.liferay.portal.kernel.xml.ElementHandler.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.kernel.xml;

import java.util.HashSet;
import java.util.Set;

import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;

/**
 * @author Zsolt Berentey
 */
public class ElementHandler implements ContentHandler {

    public ElementHandler(ElementProcessor elementProcessor, String[] triggers) {

        _elementProcessor = elementProcessor;

        for (String trigger : triggers) {
            _triggers.add(trigger);
        }
    }

    @Override
    public void characters(char[] chars, int start, int length) {
        if (_element != null) {
            _element.setText(new String(chars, start, length));
        }
    }

    @Override
    public void endDocument() {
    }

    @Override
    public void endElement(String uri, String localName, String qName) {
        if (_element != null) {
            _elementProcessor.processElement(_element);

            _element = null;
        }
    }

    @Override
    public void endPrefixMapping(String prefix) {
    }

    @Override
    public void ignorableWhitespace(char[] chars, int start, int length) {
    }

    @Override
    public void processingInstruction(String target, String data) {
    }

    @Override
    public void setDocumentLocator(Locator locator) {
    }

    @Override
    public void skippedEntity(String name) {
    }

    @Override
    public void startDocument() {
    }

    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) {

        if (_element != null) {
            _elementProcessor.processElement(_element);

            _element = null;
        }

        if (!_triggers.contains(localName)) {
            return;
        }

        Element element = SAXReaderUtil.createElement(qName);

        for (int i = 0; i < attributes.getLength(); i++) {
            element.addAttribute(attributes.getQName(i), attributes.getValue(i));
        }

        _element = element;
    }

    @Override
    public void startPrefixMapping(String prefix, String uri) {
    }

    private Element _element;
    private final ElementProcessor _elementProcessor;
    private final Set<String> _triggers = new HashSet<>();

}