| /* |
| * 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. |
| */ |
| package org.apache.sling.feature.cpconverter.shared; |
| |
| import static org.apache.jackrabbit.JcrConstants.JCR_PRIMARYTYPE; |
| |
| import java.io.InputStream; |
| import java.util.Set; |
| |
| import javax.xml.parsers.SAXParser; |
| import javax.xml.parsers.SAXParserFactory; |
| |
| import com.google.common.collect.ImmutableSet; |
| import org.jetbrains.annotations.NotNull; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| public abstract class AbstractJcrNodeParser<O> extends DefaultHandler { |
| |
| private static final String JCR_ROOT = "jcr:root"; |
| |
| private static final SAXParserFactory saxParserFactory = SAXParserFactory.newInstance(); |
| |
| private final Set<String> primaryTypes; |
| |
| protected String detectedPrimaryType; |
| |
| protected AbstractJcrNodeParser(@NotNull String... primaryTypes) { |
| this.primaryTypes = ImmutableSet.of(primaryTypes); |
| } |
| |
| public O parse(InputStream input) throws Exception { |
| SAXParser saxParser = saxParserFactory.newSAXParser(); |
| saxParser.parse(input, this); |
| return getParsingResult(); |
| } |
| |
| @Override |
| public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { |
| if (JCR_ROOT.equals(qName)) { |
| String primaryType = attributes.getValue(JCR_PRIMARYTYPE); |
| onJcrRootNode(uri, localName, qName, attributes, primaryType); |
| } |
| } |
| |
| protected void onJcrRootNode(String uri, String localName, String qName, Attributes attributes, String primaryType) { |
| if (this.primaryTypes.contains(primaryType)) { |
| detectedPrimaryType = primaryType; |
| onJcrRootElement(uri, localName, qName, attributes); |
| } |
| } |
| |
| protected abstract void onJcrRootElement(String uri, String localName, String qName, Attributes attributes); |
| |
| protected abstract O getParsingResult(); |
| } |