| /** |
| * 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.manager; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.sqoop.SqoopOptions; |
| |
| /** |
| * Database manager that queries "information schema" directly |
| * (instead of metadata calls) to retrieve information. |
| */ |
| public abstract class InformationSchemaManager |
| extends CatalogQueryManager { |
| |
| public static final Log LOG = LogFactory.getLog( |
| InformationSchemaManager.class.getName()); |
| |
| public InformationSchemaManager(final String driverClass, |
| final SqoopOptions opts) { |
| super(driverClass, opts); |
| } |
| |
| protected abstract String getSchemaQuery(); |
| |
| @Override |
| protected String getListTablesQuery() { |
| return |
| "SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES " |
| + "WHERE TABLE_SCHEMA = (" + getSchemaQuery() + ")"; |
| } |
| |
| @Override |
| protected String getListColumnsQuery(String tableName) { |
| return |
| "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS " |
| + "WHERE TABLE_SCHEMA = (" + getSchemaQuery() + ") " |
| + " AND TABLE_NAME = '" + tableName + "' "; |
| } |
| |
| @Override |
| protected String getPrimaryKeyQuery(String tableName) { |
| return |
| "SELECT kcu.COLUMN_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc, " |
| + " INFORMATION_SCHEMA.KEY_COLUMN_USAGE kcu " |
| + "WHERE tc.TABLE_SCHEMA = kcu.TABLE_SCHEMA " |
| + " AND tc.TABLE_NAME = kcu.TABLE_NAME " |
| + " AND tc.CONSTRAINT_SCHEMA = kcu.CONSTRAINT_SCHEMA " |
| + " AND tc.CONSTRAINT_NAME = kcu.CONSTRAINT_NAME " |
| + " AND tc.TABLE_SCHEMA = (" + getSchemaQuery() + ") " |
| + " AND tc.TABLE_NAME = '" + tableName + "' " |
| + " AND tc.CONSTRAINT_TYPE = 'PRIMARY KEY'"; |
| } |
| } |
| |