Java tutorial
/* * #%L * P6Spy * %% * Copyright (C) 2013 P6Spy * %% * 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. * #L% */ package com.p6spy.engine.spy; import liquibase.exception.LiquibaseException; import liquibase.integration.spring.SpringLiquibase; import org.apache.log4j.Logger; import org.springframework.core.io.DefaultResourceLoader; import org.springframework.jdbc.datasource.DriverManagerDataSource; import javax.sql.DataSource; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.Enumeration; public class P6TestUtil { private static final Logger log = Logger.getLogger(P6TestUtil.class); public static int queryForInt(Connection con, String sql) throws SQLException { Statement stmt = null; ResultSet rs = null; try { stmt = con.createStatement(); rs = stmt.executeQuery(sql); rs.next(); return rs.getInt(1); } finally { if (rs != null) try { rs.close(); } catch (Exception e) { } if (stmt != null) try { stmt.close(); } catch (Exception e) { } } } public static void execute(Connection con, String sql) throws SQLException { Statement stmt = null; try { stmt = con.createStatement(); stmt.execute(sql); } finally { if (stmt != null) try { stmt.close(); } catch (Exception e) { } } } public static void setupTestData(final String url, final String username, final String password) throws LiquibaseException { // setup database for testing String nativeUrl = url; if (url.startsWith("jdbc:p6spy:")) { nativeUrl = url.replace("jdbc:p6spy:", "jdbc:"); } setupTestData(new DriverManagerDataSource(nativeUrl, username, password)); } public static void setupTestData(final DataSource dataSource) throws LiquibaseException { log.info("Setting up database for testing"); SpringLiquibase liquibase = new SpringLiquibase(); liquibase.setChangeLog("classpath:liquibase.xml"); liquibase.setDataSource(dataSource); liquibase.setResourceLoader(new DefaultResourceLoader()); liquibase.setDropFirst(true); liquibase.afterPropertiesSet(); } public static void printAllDrivers() { if (log.isDebugEnabled()) { for (Enumeration e = DriverManager.getDrivers(); e.hasMoreElements();) { log.debug("1 DRIVER FOUND == " + e.nextElement()); } } } public static int executeUpdate(Connection connection, String query) throws SQLException { Statement stmt = null; try { stmt = connection.createStatement(); return stmt.executeUpdate(query); } finally { if (stmt != null) try { stmt.close(); } catch (Exception e) { } } } }