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/**
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* SQL-DK
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* Copyright © 2013 František Kučera (frantovo.cz)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package info.globalcode.sql.dk;
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import info.globalcode.sql.dk.configuration.ConfigurationProvider;
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import info.globalcode.sql.dk.CLIOptions.MODE;
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import info.globalcode.sql.dk.configuration.Configuration;
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import info.globalcode.sql.dk.configuration.ConfigurationException;
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import info.globalcode.sql.dk.configuration.DatabaseDefinition;
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import info.globalcode.sql.dk.configuration.FormatterDefinition;
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import info.globalcode.sql.dk.formatting.Formatter;
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import info.globalcode.sql.dk.formatting.FormatterContext;
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import info.globalcode.sql.dk.formatting.FormatterException;
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import java.io.IOException;
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import java.sql.SQLException;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import javax.xml.bind.JAXBContext;
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import javax.xml.bind.Unmarshaller;
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/**
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*
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* @author Ing. František Kučera (frantovo.cz)
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*/
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public class CLIStarter implements ConfigurationProvider {
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private static final Logger log = Logger.getLogger(CLIStarter.class.getName());
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private static final int EXIT_SUCCESS = 0;
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private static final int EXIT_EXPECTED_ERROR = 3;
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private static final int EXIT_SQL_ERROR = 4;
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private CLIOptions options;
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private Configuration configuration;
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public static void main(String[] args) {
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log.log(Level.FINE, "Starting " + Constants.PROGRAM_NAME);
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int exitCode = EXIT_EXPECTED_ERROR;
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if (args.length == 0) {
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args = new String[]{CLIParser.Tokens.INFO_HELP};
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}
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try {
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CLIParser parser = new CLIParser();
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CLIOptions options = parser.parseOptions(args);
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options.validate();
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CLIStarter starter = new CLIStarter(options);
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starter.installDefaultConfiguration();
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starter.process();
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log.log(Level.FINE, "All done");
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exitCode = EXIT_SUCCESS;
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} catch (CLIParserException e) {
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log.log(Level.SEVERE, "Unable to parse CLI options", e);
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} catch (InvalidOptionsException e) {
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log.log(Level.SEVERE, "Invalid CLI options", e);
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for (InvalidOptionsException.OptionProblem p : e.getProblems()) {
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log.log(Level.SEVERE, "Option problem: {0}", p.getDescription());
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}
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} catch (ConfigurationException e) {
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log.log(Level.SEVERE, "Configuration problem", e);
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} catch (SQLException e) {
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log.log(Level.SEVERE, "SQL problem", e);
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exitCode = EXIT_SQL_ERROR;
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} catch (FormatterException e) {
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log.log(Level.SEVERE, "Formatting problem", e);
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}
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System.exit(exitCode);
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}
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public CLIStarter(CLIOptions options) {
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this.options = options;
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}
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private void process() throws ConfigurationException, SQLException, FormatterException {
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/** Show info */
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if (!options.getShowInfo().isEmpty()) {
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InfoLister infoLister = new InfoLister(System.err, this);
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infoLister.showInfo(options);
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}
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MODE mode = options.getMode();
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switch (mode) {
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case QUERY_NOW:
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processQueryNow();
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break;
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case PREPARE_BATCH:
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processPrepareBatch();
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break;
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case EXECUTE_BATCH:
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processExecuteBatch();
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break;
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case JUST_SHOW_INFO:
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// already done above
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break;
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default:
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log.log(Level.SEVERE, "Unsupported mode: {0}", mode);
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break;
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}
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}
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private void processQueryNow() throws ConfigurationException, SQLException, FormatterException {
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DatabaseDefinition dd = getConfiguration().getDatabase(options.getDatabaseName());
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if (dd == null) {
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throw new ConfigurationException("Database is not configured: " + options.getDatabaseName());
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} else {
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FormatterDefinition fd = configuration.getFormatter(options.getFormatterName());
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if (fd == null) {
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throw new ConfigurationException("Formatter is not configured: " + options.getFormatterName());
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} else {
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try (DatabaseConnection c = dd.connect()) {
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log.log(Level.FINE, "Database connected");
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Formatter f = fd.getInstance(new FormatterContext(options.getOutputStream()));
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c.executeQuery(options.getSQLCommand(), f);
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}
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}
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}
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}
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private void processPrepareBatch() {
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}
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private void processExecuteBatch() {
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}
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@Override
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public Configuration getConfiguration() throws ConfigurationException {
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if (configuration == null) {
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configuration = loadConfiguration();
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}
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return configuration;
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}
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private void installDefaultConfiguration() throws ConfigurationException {
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Constants.DIR.mkdir();
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if (Constants.CONFIG_FILE.exists()) {
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log.log(Level.FINER, "Config file already exists: {0}", Constants.CONFIG_FILE);
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} else {
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try {
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Functions.installResource(Constants.EXAMPLE_CONFIG_FILE, Constants.CONFIG_FILE);
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log.log(Level.FINE, "Installing default config file: {0}", Constants.CONFIG_FILE);
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} catch (IOException e) {
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throw new ConfigurationException("Unable to write example configuration to " + Constants.CONFIG_FILE, e);
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}
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}
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}
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private Configuration loadConfiguration() throws ConfigurationException {
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try {
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JAXBContext jaxb = JAXBContext.newInstance(Configuration.class);
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Unmarshaller u = jaxb.createUnmarshaller();
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return (Configuration) u.unmarshal(Constants.CONFIG_FILE);
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} catch (Exception e) {
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throw new ConfigurationException("Unable to load configuration from " + Constants.CONFIG_FILE, e);
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}
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}
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}
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