/*
 * Copyright 2010 netling project <http://netling.org>
 *
 * 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.
 *
 * This file may incorporate work covered by the following copyright and
 * permission notice:
 *
 *     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.netling.ftp.parser;

import org.netling.ftp.FTPClientConfig;
import org.netling.ftp.FTPFileEntryParser;

/**
 * The interface describes a factory for creating FTPFileEntryParsers.
 * 
 */
public interface FTPFileEntryParserFactory
{
    /**
     * Implementation should be a method that decodes the
     * supplied key and creates an object implementing the
     * interface FTPFileEntryParser.
     *
     * @param key    A string that somehow identifies an
     *               FTPFileEntryParser to be created.
     *
     * @return the FTPFileEntryParser created.
     * @exception ParserInitializationException
     *                   Thrown on any exception in instantiation
     */
    public FTPFileEntryParser createFileEntryParser(String key)
        throws ParserInitializationException;
    
    /**
     *<p>
     * Implementation should be a method that extracts
     * a key from the supplied {@link  FTPClientConfig FTPClientConfig}
     * parameter and creates an object implementing the
     * interface FTPFileEntryParser and uses the supplied configuration
     * to configure it.
     * </p><p>
     * Note that this method will generally not be called in scenarios
     * that call for autodetection of parser type but rather, for situations
     * where the user knows that the server uses a non-default configuration
     * and knows what that configuration is.
     * </p>
     *
     * @param config  A {@link  FTPClientConfig FTPClientConfig}  
     * used to configure the parser created
     *
     * @return the @link  FTPFileEntryParser FTPFileEntryParser} so created.
     * @exception ParserInitializationException
     *                   Thrown on any exception in instantiation
     * 
     */
    public FTPFileEntryParser createFileEntryParser(FTPClientConfig config)
        throws ParserInitializationException;

}