Encoder.java

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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.commons.codec;

/**
 * Provides the highest level of abstraction for Encoders.
 * <p>
 * This is the sister interface of {@link Decoder}.  Every implementation of Encoder provides this
 * common generic interface which allows a user to pass a generic Object to any Encoder implementation
 * in the codec package.
 *
 * @version $Id$
 */
public interface Encoder {

    /**
     * Encodes an "Object" and returns the encoded content as an Object. The Objects here may just be
     * <code>byte[]</code> or <code>String</code>s depending on the implementation used.
     *
     * @param source
     *            An object to encode
     * @return An "encoded" Object
     * @throws EncoderException
     *             An encoder exception is thrown if the encoder experiences a failure condition during the encoding
     *             process.
     */
    Object encode(Object source) throws EncoderException;
}