content: /**
   *  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.aries.blueprint.container;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.net.URI;
  import java.net.URL;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Set;
  
  import org.apache.aries.blueprint.ComponentDefinitionRegistry;
  import org.apache.aries.blueprint.parser.ComponentDefinitionRegistryImpl;
  import org.apache.aries.blueprint.parser.NamespaceHandlerSet;
  import org.apache.aries.blueprint.parser.Parser;
  import org.apache.aries.blueprint.services.ParserService;
  import org.osgi.framework.Bundle;
  import org.xml.sax.SAXException;
  
  public class ParserServiceImpl implements ParserService {
  
      final NamespaceHandlerRegistry _namespaceHandlerRegistry;
      final boolean _ignoreUnknownNamespaceHandlers;
  
      public ParserServiceImpl(NamespaceHandlerRegistry nhr, boolean ignoreUnknownNamespaceHandlers) {
          _namespaceHandlerRegistry = nhr;
          _ignoreUnknownNamespaceHandlers = ignoreUnknownNamespaceHandlers;
      }
  
      public ComponentDefinitionRegistry parse(URL url, Bundle clientBundle) throws Exception {
          return parse(url, clientBundle, false);
      }
  
      public ComponentDefinitionRegistry parse(URL url, Bundle clientBundle, boolean validate)
              throws Exception {
          List<URL> urls = new ArrayList<URL>();
          urls.add(url);
          return parse(urls, clientBundle, validate);
      }
  
      public ComponentDefinitionRegistry parse(List<URL> urls, Bundle clientBundle) throws Exception {
          return parse(urls, clientBundle, false);
      }
  
      public ComponentDefinitionRegistry parse(List<URL> urls, Bundle clientBundle, boolean validate) throws Exception {
          Parser parser = new Parser(null, _ignoreUnknownNamespaceHandlers);
          parser.parse(urls);
          return validateAndPopulate(parser, clientBundle, validate);
      }
  
      public ComponentDefinitionRegistry parse(InputStream is, Bundle clientBundle) throws Exception {
          return parse(is, clientBundle, false);
      }
  
      public ComponentDefinitionRegistry parse(InputStream is, Bundle clientBundle, boolean validate) throws Exception {
          Parser parser = new Parser(null, _ignoreUnknownNamespaceHandlers);
          parser.parse(is);
          return validateAndPopulate(parser, clientBundle, validate);
      }
  
      private ComponentDefinitionRegistry validateAndPopulate(Parser parser, Bundle clientBundle, boolean validate)
              throws IOException, SAXException {
          Set<URI> nsuris = parser.getNamespaces();
          ComponentDefinitionRegistry cdr;
          NamespaceHandlerSet nshandlers = _namespaceHandlerRegistry.getNamespaceHandlers(nsuris, clientBundle);
          try {
              if (validate) {
                  parser.validate(nshandlers.getSchema());
              }
              cdr = new ComponentDefinitionRegistryImpl();
              parser.populate(nshandlers, cdr);
          } finally {
              nshandlers.destroy();
          }
  
          return cdr;
      }
  
  }
  