| /* |
| * 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.felix.ipojo.manipulator.metadata; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.felix.ipojo.manipulator.MetadataProvider; |
| import org.apache.felix.ipojo.manipulator.Reporter; |
| import org.apache.felix.ipojo.metadata.Element; |
| |
| /** |
| * A {@code FileMetadataProvider} is responsible of loading all the {@literal .xml} files in the given directory. |
| * It also accepts a direct reference to a {@literal metadata.xml} file. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class FileMetadataProvider implements MetadataProvider { |
| |
| /** |
| * Metadata source (file or directory). |
| */ |
| private File m_source; |
| |
| /** |
| * Feedback reporter. |
| */ |
| private Reporter m_reporter; |
| |
| /** |
| * Validate using local schemas or not ? |
| */ |
| private boolean m_validateUsingLocalSchemas = false; |
| |
| /** |
| * Constructs a metadata provider using the given source File (directory |
| * or file) to load iPOJO metadata. |
| * @param source source of the metadata |
| * @param reporter feedback reporter |
| */ |
| public FileMetadataProvider(File source, Reporter reporter) { |
| m_source = source; |
| m_reporter = reporter; |
| } |
| |
| public void setValidateUsingLocalSchemas(boolean validateUsingLocalSchemas) { |
| m_validateUsingLocalSchemas = validateUsingLocalSchemas; |
| } |
| |
| public List<Element> getMetadatas() throws IOException { |
| |
| List<Element> metadata = new ArrayList<Element>(); |
| traverse(m_source, metadata); |
| return metadata; |
| } |
| |
| private void traverse(File file, List<Element> metadata) { |
| if (file.isDirectory()) { |
| // Traverse the directory and parse all files. |
| File[] files = file.listFiles(); |
| for (File child : files) { |
| traverse(child, metadata); |
| } |
| } else if (file.getName().endsWith(".xml")) { // Detect XML by extension, |
| // others are ignored. |
| loadFileMetadata(file, metadata); |
| } |
| |
| } |
| |
| private void loadFileMetadata(File file, List<Element> metadata) { |
| try { |
| // Sanity check, should be OK, but we never know ... |
| InputStream stream = null; |
| URL url = file.toURI().toURL(); |
| stream = url.openStream(); |
| StreamMetadataProvider provider = new StreamMetadataProvider(stream, m_reporter); |
| provider.setValidateUsingLocalSchemas(m_validateUsingLocalSchemas); |
| metadata.addAll(provider.getMetadatas()); |
| } catch (MalformedURLException e) { |
| m_reporter.error("Cannot open the metadata input stream from " + m_source.getAbsolutePath() + ": " + e.getMessage()); |
| } catch (IOException e) { |
| m_reporter.error("Cannot open the metadata input stream: " + m_source.getAbsolutePath() + ": " + e.getMessage()); |
| } |
| |
| } |
| } |