org.apache.maven.index.reader.resource.BufferedWritableResourceHandler Maven / Gradle / Ivy

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Indexer Reader is a dependency-less library that is able to read published (remote) index with incremental update support, making usable to integrate published Maven Indexes into any engine without depending on maven-indexer-core and its transitive dependencies.

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package org.apache.maven.index.reader.resource;

/*
 * 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.
 */

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

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

import static java.util.Objects.requireNonNull;

/**
 * Wraps {@link WritableResourceHandler}s so that they return {@link WritableResource}s that return
 * {@link BufferedInputStream}s and {@link BufferedOutputStream}s.
 */
public class BufferedWritableResourceHandler implements WritableResourceHandler
{
    private final WritableResourceHandler writableResourceHandler;

    public BufferedWritableResourceHandler( WritableResourceHandler writableResourceHandler )
    {
        requireNonNull( writableResourceHandler, "writableResourceHandler cannot be null" );
        this.writableResourceHandler = writableResourceHandler;
    }

    @Override
    public WritableResource locate( String name ) throws IOException
    {
        return new BufferedWritableResource( writableResourceHandler.locate( name ) );
    }

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