| /* |
| * 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.qpid.server.store.jdbc; |
| |
| import java.sql.Connection; |
| import java.sql.DatabaseMetaData; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.slf4j.Logger; |
| |
| import org.apache.qpid.server.model.ConfiguredObject; |
| import org.apache.qpid.server.store.StoreException; |
| |
| public class JdbcUtils |
| { |
| public static void closeConnection(final Connection conn, final Logger logger) |
| { |
| if(conn != null) |
| { |
| try |
| { |
| conn.close(); |
| } |
| catch (SQLException e) |
| { |
| logger.error("Problem closing connection", e); |
| } |
| } |
| } |
| |
| public static void closePreparedStatement(final PreparedStatement stmt, final Logger logger) |
| { |
| if (stmt != null) |
| { |
| try |
| { |
| stmt.close(); |
| } |
| catch(SQLException e) |
| { |
| logger.error("Problem closing prepared statement", e); |
| } |
| } |
| } |
| |
| public static boolean tableExists(final String tableName, final Connection conn) throws SQLException |
| { |
| DatabaseMetaData metaData = conn.getMetaData(); |
| // Some databases are not case sensitive in their table names and/or report back a different case for the |
| // name of the table than the one originally used to create it |
| return tableExistsCase(tableName.toUpperCase(), metaData) || tableExistsCase(tableName.toLowerCase(), metaData) |
| || (!tableName.equals(tableName.toUpperCase()) |
| && !tableName.equals(tableName.toLowerCase()) |
| && tableExistsCase(tableName, metaData)); |
| |
| } |
| |
| public static ConnectionProvider createConnectionProvider(final ConfiguredObject<?> parent, |
| final JDBCSettings settings, |
| final Logger logger) |
| throws SQLException |
| { |
| String connectionPoolType = settings.getConnectionPoolType() == null |
| ? DefaultConnectionProviderFactory.TYPE |
| : settings.getConnectionPoolType(); |
| |
| JDBCConnectionProviderFactory connectionProviderFactory = |
| JDBCConnectionProviderFactory.FACTORIES.get(connectionPoolType); |
| if (connectionProviderFactory == null) |
| { |
| logger.warn("Unknown connection pool type: {}. No connection pooling will be used", connectionPoolType); |
| connectionProviderFactory = new DefaultConnectionProviderFactory(); |
| } |
| |
| Map<String, String> providerAttributes = new HashMap<>(); |
| Set<String> providerAttributeNames = new HashSet<>(connectionProviderFactory.getProviderAttributeNames()); |
| providerAttributeNames.retainAll(parent.getContextKeys(false)); |
| for (String attr : providerAttributeNames) |
| { |
| providerAttributes.put(attr, parent.getContextValue(String.class, attr)); |
| } |
| |
| return connectionProviderFactory.getConnectionProvider(settings.getConnectionUrl(), |
| settings.getUsername(), |
| settings.getPassword(), |
| providerAttributes); |
| } |
| |
| static ConnectionProvider createConnectionProvider(final ConfiguredObject<?> parent, final Logger logger) |
| { |
| JDBCSettings settings = (JDBCSettings) parent; |
| try |
| { |
| return createConnectionProvider(parent, settings, logger); |
| } |
| catch (SQLException e) |
| { |
| throw new StoreException(String.format( |
| "Failed to create connection provider for connectionUrl: '%s' and username: '%s'", |
| settings.getConnectionUrl(), |
| settings.getUsername()), e); |
| } |
| } |
| |
| public static void dropTables(final Connection connection, final Logger logger, Collection<String> tableNames) |
| { |
| for (String tableName : tableNames) |
| { |
| try(Statement statement = connection.createStatement()) |
| { |
| statement.execute(String.format("DROP TABLE %s", tableName)); |
| } |
| catch(SQLException e) |
| { |
| logger.warn("Failed to drop table '" + tableName + "' :" + e); |
| } |
| } |
| } |
| private static boolean tableExistsCase(final String tableName, final DatabaseMetaData metaData) throws SQLException |
| { |
| try (ResultSet rs = metaData.getTables(null, null, tableName, null)) |
| { |
| return rs.next(); |
| } |
| } |
| } |