Java tutorial
/* * Copyright (C) 2011 Rob Manning * manningr@users.sourceforge.net * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package net.sourceforge.squirrel_sql.plugins.dbcopy.cli; import java.util.ArrayList; import java.util.List; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.CommandLineParser; import org.apache.commons.cli.GnuParser; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.Option; import org.apache.commons.cli.OptionBuilder; import org.apache.commons.cli.OptionGroup; import org.apache.commons.cli.Options; import org.apache.commons.cli.ParseException; /** * Class that processes arguments that are specific to the DBCopy command-line. */ public class CommandLineArgumentProcessor { public static final String SOURCE_CATALOG = "source-catalog"; public static final String SOURCE_SCHEMA = "source-schema"; public static final String DEST_CATALOG = "dest-catalog"; public static final String DEST_SCHEMA = "dest-schema"; public static final String TABLE_PATTERN = "table-pattern"; public static final String TABLE_LIST = "table-list"; public static final String DEST_SESSION = "dest-alias"; public static final String SOURCE_SESSION = "source-alias"; private Options options = new Options(); private CommandLine cmd = null; public CommandLineArgumentProcessor(String[] args) throws ParseException { createOptions(); CommandLineParser parser = new GnuParser(); try { cmd = parser.parse(options, args); } catch (ParseException e) { HelpFormatter formatter = new HelpFormatter(); System.out.println(e.getMessage()); System.out.println(); formatter.printHelp("DBCopyCLI", options, true); throw e; } } @SuppressWarnings("static-access") private void createOptions() { Option sourceOption = OptionBuilder.hasArg().isRequired().withLongOpt(SOURCE_SESSION) .withDescription("The name of the source alias to copy tables from").create(); options.addOption(sourceOption); Option destOption = OptionBuilder.hasArg().isRequired().withLongOpt(DEST_SESSION) .withDescription("The name of the destination alias to copy tables to").create(); options.addOption(destOption); Option sourceSchemaOption = OptionBuilder.hasArg().withLongOpt(SOURCE_SCHEMA) .withDescription("The source schema to copy tables from").create(); Option sourceCatalogOption = OptionBuilder.hasArg().withLongOpt(SOURCE_CATALOG) .withDescription("The source catalog to copy tables from").create(); OptionGroup sourceSchemaGroup = new OptionGroup(); sourceSchemaGroup.setRequired(true); sourceSchemaGroup.addOption(sourceSchemaOption); sourceSchemaGroup.addOption(sourceCatalogOption); options.addOptionGroup(sourceSchemaGroup); Option listOption = OptionBuilder.hasArg().withLongOpt(TABLE_LIST) .withDescription("A comma-delimited list of tables to copy").create(); Option patternOption = OptionBuilder.hasArg().withLongOpt(TABLE_PATTERN) .withDescription("A regexp pattern to match source table names").create(); OptionGroup tableGroup = new OptionGroup(); tableGroup.setRequired(true); tableGroup.addOption(listOption); tableGroup.addOption(patternOption); options.addOptionGroup(tableGroup); Option destSchemaOption = OptionBuilder.hasArg().withLongOpt(DEST_SCHEMA) .withDescription("The destination schema to copy tables into").create(); Option destCatalogOption = OptionBuilder.hasArg().withLongOpt(DEST_CATALOG) .withDescription("The destination catalog to copy tables into").create(); OptionGroup destSchemaGroup = new OptionGroup(); destSchemaGroup.setRequired(true); destSchemaGroup.addOption(destSchemaOption); destSchemaGroup.addOption(destCatalogOption); options.addOptionGroup(destSchemaGroup); } public String getSourceAliasName() { return cmd.getOptionValue(SOURCE_SESSION); } public String getDestAliasName() { return cmd.getOptionValue(DEST_SESSION); } public String getDestSchemaName() { return cmd.getOptionValue(DEST_SCHEMA); } public String getDestCatalogName() { return cmd.getOptionValue(DEST_CATALOG); } public String getSourceCatalogName() { return cmd.getOptionValue(SOURCE_CATALOG); } public String getSourceSchemaName() { return cmd.getOptionValue(SOURCE_SCHEMA); } public String getTablePattern() { return cmd.getOptionValue(TABLE_PATTERN); } public List<String> getTableList() { List<String> result = new ArrayList<String>(); if (hasTableList()) { String tableListStr = cmd.getOptionValue(TABLE_LIST); if (tableListStr.contains(",")) { String[] parts = tableListStr.split(","); for (String part : parts) { result.add(part); } } else { result.add(tableListStr); } } return result; } public boolean hasTableList() { return cmd.hasOption(TABLE_LIST); } }