/*
 * 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.maven.index.reader.resource;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.maven.index.reader.WritableResourceHandler.WritableResource;

/**
 * Wraps {@link WritableResource}s so that they return {@link BufferedInputStream}s and {@link
 * BufferedOutputStream}s.
 */
public class BufferedWritableResource extends BufferedResource implements WritableResource {
    private final WritableResource resource;

    public BufferedWritableResource(WritableResource resource) {
        super(resource);
        this.resource = resource;
    }

    @Override
    public OutputStream write() throws IOException {
        OutputStream out = resource.write();
        if (out == null) {
            return null;
        }
        return new BufferedOutputStream(out);
    }

    @Override
    public void close() throws IOException {
        resource.close();
    }
}
