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/*
 * Copyright 2001-2004 The Apache Software Foundation.
 *
 * Licensed 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 com.aliyun.dc.opplat.sdk.api.internal.codec;

/**
 * Provides the highest level of abstraction for Decoders.
 * This is the sister interface of {@link Encoder}.  All Decoders implement this common generic interface.
 *
 * Allows a user to pass a generic Object to any Decoder
 * implementation in the codec package.
 *
 * One of the two interfaces at the center of the codec package.
 *
 * @author Apache Software Foundation
 * @version $Id: Decoder.java,v 1.9 2004/02/29 04:08:31 tobrien Exp $
 */
public interface Decoder {

    /**
     * Decodes an "encoded" Object and returns a "decoded" Object.  Note that the implementation of this interface will try to cast the
     * Object parameter to the specific type expected by a particular Decoder implementation.  If a {@link ClassCastException} occurs this
     * decode method will throw a DecoderException.
     *
     * @param pObject an object to "decode"
     * @return a 'decoded" object
     * @throws DecoderException a decoder exception can be thrown for any number of reasons.  Some good candidates are that the parameter
     *                          passed to this method is null, a param cannot be cast to the appropriate type for a specific encoder.
     */
    Object decode(Object pObject) throws DecoderException;
}