/**
* 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.metamodel;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Arrays;
import junit.framework.TestCase;
import org.apache.metamodel.data.DataSet;
import org.apache.metamodel.jdbc.JdbcDataContext;
import org.apache.metamodel.jdbc.dialects.IQueryRewriter;
import org.apache.metamodel.jdbc.dialects.SQLServerQueryRewriter;
import org.apache.metamodel.query.Query;
import org.apache.metamodel.query.SelectItem;
import org.apache.metamodel.schema.Schema;
import org.apache.metamodel.schema.Table;
import org.apache.metamodel.schema.TableType;
/**
* Test case that tests MS SQL Server interaction. The test uses the
* "AdventureWorks" sample database which can be downloaded from codeplex.
*
* This testcase uses the official MS SQL Server driver.
*
* @link{http://www.codeplex.com/MSFTDBProdSamples
* */
public class SQLServerMicrosoftDriverTest extends TestCase {
private Connection _connection;
private String _databaseName = "AdventureWorks";
@Override
protected void setUp() throws Exception {
super.setUp();
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
_connection = DriverManager.getConnection("jdbc:sqlserver://localhost\\SQLEXPRESS;databaseName="
+ _databaseName, "eobjects", "eobjects");
_connection.setReadOnly(true);
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
_connection.close();
}
public void testQueryUsingExpressions() throws Exception {
JdbcDataContext strategy = new JdbcDataContext(_connection,
new TableType[] { TableType.TABLE, TableType.VIEW }, _databaseName);
Query q = new Query().select("Name").from("Production.Product").where("COlor IS NOT NULL").setMaxRows(5);
DataSet dataSet = strategy.executeQuery(q);
assertEquals("[Name]", Arrays.toString(dataSet.getSelectItems()));
assertTrue(dataSet.next());
assertEquals("Row[values=[LL Crankarm]]", dataSet.getRow().toString());
assertTrue(dataSet.next());
assertTrue(dataSet.next());
assertTrue(dataSet.next());
assertTrue(dataSet.next());
assertFalse(dataSet.next());
}
public void testGetSchemaNormalTableTypes() throws Exception {
JdbcDataContext dc = new JdbcDataContext(_connection, new TableType[] { TableType.TABLE, TableType.VIEW },
_databaseName);
Schema[] schemas = dc.getSchemas();
assertEquals(8, schemas.length);
assertEquals("Schema[name=HumanResources]", schemas[0].toString());
assertEquals(13, schemas[0].getTableCount());
assertEquals("Schema[name=INFORMATION_SCHEMA]", schemas[1].toString());
assertEquals(20, schemas[1].getTableCount());
assertEquals("Schema[name=Person]", schemas[2].toString());
assertEquals(8, schemas[2].getTableCount());
assertEquals("Schema[name=Production]", schemas[3].toString());
assertEquals(28, schemas[3].getTableCount());
assertEquals("Schema[name=Purchasing]", schemas[4].toString());
assertEquals(8, schemas[4].getTableCount());
assertEquals("Schema[name=Sales]", schemas[5].toString());
assertEquals(27, schemas[5].getTableCount());
}
public void testGetSchemaAllTableTypes() throws Exception {
JdbcDataContext strategy = new JdbcDataContext(_connection, new TableType[] { TableType.OTHER,
TableType.GLOBAL_TEMPORARY }, _databaseName);
assertEquals("[Sales, HumanResources, dbo, Purchasing, sys, Production, INFORMATION_SCHEMA, Person]",
Arrays.toString(strategy.getSchemaNames()));
assertEquals("Schema[name=dbo]", strategy.getDefaultSchema().toString());
}
public void testQueryRewriterQuoteAliases() throws Exception {
JdbcDataContext strategy = new JdbcDataContext(_connection, TableType.DEFAULT_TABLE_TYPES, _databaseName);
IQueryRewriter queryRewriter = strategy.getQueryRewriter();
assertSame(SQLServerQueryRewriter.class, queryRewriter.getClass());
Schema schema = strategy.getSchemaByName("Sales");
Table customersTable = schema.getTableByName("CUSTOMER");
Query q = new Query().from(customersTable, "cus-tomers").select(
new SelectItem(customersTable.getColumnByName("AccountNumber")).setAlias("c|o|d|e"));
q.setMaxRows(5);
assertEquals("SELECT cus-tomers.\"AccountNumber\" AS c|o|d|e FROM Sales.\"Customer\" cus-tomers", q.toString());
String queryString = queryRewriter.rewriteQuery(q);
assertEquals(
"SELECT TOP 5 \"cus-tomers\".\"AccountNumber\" AS \"c|o|d|e\" FROM Sales.\"Customer\" \"cus-tomers\"",
queryString);
// We have to test that no additional quoting characters are added every
// time we run the rewriting
queryString = queryRewriter.rewriteQuery(q);
queryString = queryRewriter.rewriteQuery(q);
assertEquals(
"SELECT TOP 5 \"cus-tomers\".\"AccountNumber\" AS \"c|o|d|e\" FROM Sales.\"Customer\" \"cus-tomers\"",
queryString);
// Test that the original query is still the same (ie. it has been
// cloned for execution)
assertEquals("SELECT cus-tomers.\"AccountNumber\" AS c|o|d|e FROM Sales.\"Customer\" cus-tomers", q.toString());
DataSet data = strategy.executeQuery(q);
assertNotNull(data);
data.close();
}
public void testQuotedString() throws Exception {
JdbcDataContext dc = new JdbcDataContext(_connection, TableType.DEFAULT_TABLE_TYPES, _databaseName);
IQueryRewriter queryRewriter = dc.getQueryRewriter();
assertSame(SQLServerQueryRewriter.class, queryRewriter.getClass());
Query q = dc.query().from("Production", "Product").select("Name").where("Color").eq("R'ed").toQuery();
assertEquals(
"SELECT \"Product\".\"Name\" FROM Production.\"Product\" Product WHERE Product.\"Color\" = 'R''ed'",
queryRewriter.rewriteQuery(q));
}
}