| /* |
| * 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.sis.storage.gpx; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.stream.Stream; |
| import org.apache.sis.storage.DataStoreException; |
| import org.apache.sis.storage.xml.stream.RewriteOnUpdate; |
| import org.apache.sis.storage.xml.stream.StaxStreamWriter; |
| |
| // Specific to the geoapi-3.1 and geoapi-4.0 branches: |
| import org.opengis.feature.Feature; |
| |
| |
| /** |
| * Updates the content of a GPX file by rewriting it. |
| * |
| * @author Martin Desruisseaux (Geomatys) |
| */ |
| final class Updater extends RewriteOnUpdate { |
| /** |
| * The metadata to write. |
| */ |
| private Metadata metadata; |
| |
| /** |
| * Creates an updater for the given source of features. |
| * |
| * @param source the set of features to update. |
| * @param location the main file, or {@code null} if unknown. |
| * @throws IOException if an error occurred while determining whether the file is empty. |
| */ |
| Updater(final WritableStore source, final Path location) throws IOException { |
| super(source, location); |
| } |
| |
| /** |
| * Returns the stream of features to copy. |
| * |
| * @return all features contained in the dataset. |
| * @throws DataStoreException if an error occurred while fetching the features. |
| */ |
| @Override |
| protected Stream<? extends Feature> features() throws DataStoreException { |
| metadata = Metadata.castOrCopy(source.getMetadata(), getLocale()); |
| return super.features(); |
| } |
| |
| /** |
| * Creates an initially empty temporary file. |
| * |
| * @return the temporary file. |
| * @throws IOException if an error occurred while creating the temporary file. |
| */ |
| @Override |
| protected Path createTemporaryFile() throws IOException { |
| return Files.createTempFile(StoreProvider.NAME, ".xml"); |
| } |
| |
| /** |
| * Creates a new GPX writer for an output in the specified file. |
| * |
| * @param temporary the temporary stream where to write, or {@code null} for writing directly in the store file. |
| * @return the writer where to copy updated features. |
| * @throws Exception if an error occurred while creating the writer. |
| */ |
| @Override |
| protected StaxStreamWriter createWriter(OutputStream temporary) throws Exception { |
| return new Writer((WritableStore) source, metadata, temporary); |
| } |
| } |