| /** |
| * 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.sqoop.tool; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| |
| import org.apache.commons.cli.CommandLine; |
| import org.apache.commons.cli.OptionBuilder; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.hadoop.util.StringUtils; |
| |
| import org.apache.sqoop.SqoopOptions; |
| import org.apache.sqoop.SqoopOptions.InvalidOptionsException; |
| import org.apache.sqoop.cli.RelatedOptions; |
| import org.apache.sqoop.cli.ToolOptions; |
| import org.apache.sqoop.util.ResultSetPrinter; |
| |
| /** |
| * Tool that evaluates a SQL statement and displays the results. |
| */ |
| public class EvalSqlTool extends BaseSqoopTool { |
| |
| public static final Log LOG = LogFactory.getLog(EvalSqlTool.class.getName()); |
| |
| public EvalSqlTool() { |
| super("eval"); |
| } |
| |
| @Override |
| /** {@inheritDoc} */ |
| public int run(SqoopOptions options) { |
| if (!init(options)) { |
| return 1; |
| } |
| |
| PreparedStatement stmt = null; |
| ResultSet rs = null; |
| PrintWriter pw = null; |
| try { |
| Connection c = manager.getConnection(); |
| String query = options.getSqlQuery(); |
| LOG.debug("SQL query: " + query); |
| stmt = c.prepareStatement(query); |
| boolean resultType = stmt.execute(); |
| // Iterate over all the results from this statement. |
| while (true) { |
| LOG.debug("resultType=" + resultType); |
| if (!resultType) { |
| // This result was an update count. |
| int updateCount = stmt.getUpdateCount(); |
| LOG.debug("updateCount=" + updateCount); |
| if (updateCount == -1) { |
| // We are done iterating over results from this statement. |
| c.commit(); |
| break; |
| } else { |
| LOG.info(updateCount + " row(s) updated."); |
| } |
| } else { |
| // This yields a ResultSet. |
| rs = stmt.getResultSet(); |
| pw = new PrintWriter(System.out, true); |
| new ResultSetPrinter().printResultSet(pw, rs); |
| pw.close(); |
| pw = null; |
| } |
| |
| resultType = stmt.getMoreResults(); |
| } |
| } catch (IOException ioe) { |
| LOG.warn("IOException formatting results: " |
| + StringUtils.stringifyException(ioe)); |
| return 1; |
| } catch (SQLException sqlE) { |
| LOG.warn("SQL exception executing statement: " |
| + StringUtils.stringifyException(sqlE)); |
| return 1; |
| } finally { |
| if (null != pw) { |
| pw.close(); |
| } |
| if (null != rs) { |
| try { |
| rs.close(); |
| } catch (SQLException sqlE) { |
| LOG.warn("SQL exception closing ResultSet: " |
| + StringUtils.stringifyException(sqlE)); |
| } |
| } |
| if (null != stmt) { |
| try { |
| stmt.close(); |
| } catch (SQLException sqlE) { |
| LOG.warn("SQL exception closing statement: " |
| + StringUtils.stringifyException(sqlE)); |
| } |
| } |
| destroy(options); |
| } |
| |
| return 0; |
| } |
| |
| @Override |
| /** Configure the command-line arguments we expect to receive */ |
| public void configureOptions(ToolOptions toolOptions) { |
| toolOptions.addUniqueOptions(getCommonOptions()); |
| |
| RelatedOptions evalOpts = new RelatedOptions("SQL evaluation arguments"); |
| evalOpts.addOption(OptionBuilder.withArgName("statement") |
| .hasArg() |
| .withDescription("Execute 'statement' in SQL and exit") |
| .withLongOpt(SQL_QUERY_ARG) |
| .create(SQL_QUERY_SHORT_ARG)); |
| |
| toolOptions.addUniqueOptions(evalOpts); |
| } |
| |
| @Override |
| /** {@inheritDoc} */ |
| public void applyOptions(CommandLine in, SqoopOptions out) |
| throws InvalidOptionsException { |
| |
| applyCommonOptions(in, out); |
| if (in.hasOption(SQL_QUERY_ARG)) { |
| out.setSqlQuery(in.getOptionValue(SQL_QUERY_ARG)); |
| } |
| } |
| |
| @Override |
| /** {@inheritDoc} */ |
| public void validateOptions(SqoopOptions options) |
| throws InvalidOptionsException { |
| |
| if (hasUnrecognizedArgs(extraArguments)) { |
| throw new InvalidOptionsException(HELP_STR); |
| } |
| |
| String sqlCmd = options.getSqlQuery(); |
| if (null == sqlCmd || sqlCmd.length() == 0) { |
| throw new InvalidOptionsException( |
| "This command requires the " + SQL_QUERY_ARG + " argument." |
| + HELP_STR); |
| } |
| |
| validateCommonOptions(options); |
| } |
| } |
| |