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Optional components of Mahout which generally support interaction with third party systems, formats, APIs, etc.

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/**
 * 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.mahout.utils.io;

import java.io.IOException;
import java.io.Writer;
/**
 * Implementation of the {@link WrappedWriter} interface based on {@link java.io.Writer}.
 */
public class IOWriterWrapper implements WrappedWriter {

  private final Writer writer;

  public IOWriterWrapper(Writer writer) {
    this.writer = writer;
  }

  /** Writes a new key and value, separating them with one space. The value must end with a
   * new line or some other delimiter, as it is not automatically added by this method 
   */
  @Override
  public void write(String key, String value) throws IOException {
    writer.write(key + ' ' + value);
  }

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