/*
* 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.empire.db.postgresql;
import static org.junit.Assert.assertEquals;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import org.apache.empire.DBResource;
import org.apache.empire.DBResource.DB;
import org.apache.empire.db.CompanyDB;
import org.apache.empire.db.DBCommand;
import org.apache.empire.db.DBDatabaseDriver;
import org.apache.empire.db.DBReader;
import org.apache.empire.db.DBRecord;
import org.apache.empire.db.DBSQLScript;
import org.apache.empire.db.exceptions.QueryFailedException;
import org.junit.Assert;
import org.junit.Ignore;
import org.junit.Rule;
import org.junit.Test;
// Ignored as the db is not available everywhere
@Ignore
public class DBDatabaseDriverPostgreSQLTest
{
@Rule
public DBResource dbResource = new DBResource(DB.POSTGRESQL);
@Test
public void testCreateReverseFunction() throws SQLException
{
Connection conn = dbResource.getConnection();
DBDatabaseDriver driver = dbResource.newDriver();
((DBDatabaseDriverPostgreSQL)driver).createReverseFunction(conn);
Statement statement = conn.createStatement();
ResultSet resultSet = statement.executeQuery("SELECT reverse('reverseme')");
resultSet.next();
String reversed = resultSet.getString(1);
resultSet.close();
statement.close();
conn.close();
assertEquals("emesrever", reversed);
}
@Test
public void testBlobDDL() throws SQLException
{
Connection conn = dbResource.getConnection();
DBDatabaseDriver driver = dbResource.newDriver();
CompanyDB db = new CompanyDB();
// Encoding issue occurs when prepared statement is disabled
//db.setPreparedStatementsEnabled(true);
db.open(driver, dbResource.getConnection());
if(!databaseExists(conn, db)){
DBSQLScript script = new DBSQLScript();
db.getCreateDDLScript(db.getDriver(), script);
System.out.println(script.toString());
script.run(db.getDriver(), dbResource.getConnection(), false);
}
conn.close();
}
@Test
public void testBlobWritingReading() throws SQLException
{
Connection conn = dbResource.getConnection();
DBDatabaseDriver driver = dbResource.newDriver();
CompanyDB db = new CompanyDB();
// Encoding issue occurs when prepared statement is disabled
//db.setPreparedStatementsEnabled(true);
db.open(driver, dbResource.getConnection());
DBRecord emp = new DBRecord();
emp.create(db.DATA);
emp.setValue(db.DATA.DATA, new byte[]{1,2,3});
emp.update(conn);
// read a value
DBCommand cmd = db.createCommand();
cmd.select(db.DATA.DATA);
DBReader reader = new DBReader();
reader.open(cmd, conn);
while(reader.moveNext()){
byte[] value = (byte[]) reader.getValue(db.DATA.DATA);
Assert.assertArrayEquals(new byte[]{1,2,3}, value);
}
conn.close();
}
/**
* Checks whether the database exists or not by executing
* select count(*) from DEPARTMENTS
* If the Departments table does not exist the querySingleInt() function return -1 for failure.
* Please note that in this case an error will appear in the log which can be ignored.
*/
private static boolean databaseExists(Connection conn, CompanyDB db)
{
// Check whether DB exists
DBCommand cmd = db.createCommand();
cmd.select(db.DEPARTMENT.count());
// Check using "select count(*) from DEPARTMENTS"
try{
return (db.querySingleInt(cmd, -1, conn) >= 0);
}catch(QueryFailedException ex){
System.out.println("Checking whether table DEPARTMENTS exists (SQLException will be logged if not - please ignore) ...");
System.out.println(ex.getMessage());
}
return false;
}
}