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Commons Net example source code file (ConfigurableFTPFileEntryParserImpl.java)

This example Commons Net source code file (ConfigurableFTPFileEntryParserImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Net tags/keywords

calendar, configurable, configurable, configurableftpfileentryparserimpl, configurableftpfileentryparserimpl, ftpclientconfig, ftpclientconfig, ftptimestampparser, ftptimestampparserimpl, parseexception, regexftpfileentryparserimpl, regexftpfileentryparserimpl, text, util

The Commons Net ConfigurableFTPFileEntryParserImpl.java source code

/*
 * 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.net.ftp.parser;

import java.text.ParseException;
import java.util.Calendar;

import org.apache.commons.net.ftp.Configurable;
import org.apache.commons.net.ftp.FTPClientConfig;


/**
 * <p>
 * This abstract class implements the common timestamp parsing
 * algorithm for all the concrete parsers.  Classes derived from
 * this one will parse file listings via a supplied regular expression
 * that pulls out the date portion as a separate string which is
 * passed to the underlying {@link FTPTimestampParser delegate} to
 * handle parsing of the file timestamp.
 * </p>

* This class also implements the {@link Configurable Configurable} * interface to allow the parser to be configured from the outside. * </p> * @since 1.4 */ /** * To change the template for this generated type comment go to * Window - Preferences - Java - Code Style - Code Templates - Comments */ public abstract class ConfigurableFTPFileEntryParserImpl extends RegexFTPFileEntryParserImpl implements Configurable { private final FTPTimestampParser timestampParser; /** * Only constructor for this abstract class. * @param regex Regular expression used main parsing of the * file listing. */ public ConfigurableFTPFileEntryParserImpl(String regex) { super(regex); this.timestampParser = new FTPTimestampParserImpl(); } /** * This method is called by the concrete parsers to delegate * timestamp parsing to the timestamp parser. * <p> * @param timestampStr the timestamp string pulled from the * file listing by the regular expression parser, to be submitted * to the <code>timestampParser for extracting the timestamp. * @return a <code>java.util.Calendar containing results of the * timestamp parse. */ public Calendar parseTimestamp(String timestampStr) throws ParseException { return this.timestampParser.parseTimestamp(timestampStr); } /** * Implementation of the {@link Configurable Configurable} * interface. Configures this parser by delegating to the * underlying Configurable FTPTimestampParser implementation, ' * passing it the supplied {@link FTPClientConfig FTPClientConfig} * if that is non-null or a default configuration defined by * each concrete subclass. * </p> * @param config the configuration to be used to configure this parser. * If it is null, a default configuration defined by * each concrete subclass is used instead. */ public void configure(FTPClientConfig config) { if (this.timestampParser instanceof Configurable) { FTPClientConfig defaultCfg = getDefaultConfiguration(); if (config != null) { if (null == config.getDefaultDateFormatStr()) { config.setDefaultDateFormatStr(defaultCfg.getDefaultDateFormatStr()); } if (null == config.getRecentDateFormatStr()) { config.setRecentDateFormatStr(defaultCfg.getRecentDateFormatStr()); } ((Configurable)this.timestampParser).configure(config); } else { ((Configurable)this.timestampParser).configure(defaultCfg); } } } /** * Each concrete subclass must define this member to create * a default configuration to be used when that subclass is * instantiated without a {@link FTPClientConfig FTPClientConfig} * parameter being specified. * @return the default configuration for the subclass. */ protected abstract FTPClientConfig getDefaultConfiguration(); }

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