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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* 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.
*/
package org.apache.tuscany.das.rdb.test;
import java.sql.SQLException;
import org.apache.tuscany.das.rdb.Command;
import org.apache.tuscany.das.rdb.Pager;
import org.apache.tuscany.das.rdb.impl.PagerImpl;
import org.apache.tuscany.das.rdb.test.data.CustomerData;
import org.apache.tuscany.das.rdb.test.framework.DasTest;
import commonj.sdo.DataObject;
public class Paging extends DasTest {
protected void setUp() throws Exception {
super.setUp();
new CustomerData(getAutoConnection()).refresh();
}
public void testPaging() throws SQLException {
//Build command to read all customers
Command custCommand = Command.FACTORY.createCommand("select * from CUSTOMER order by ID");
custCommand.setConnection(getConnection());
//Create a pager with the command
Pager pager = new PagerImpl(custCommand, 2);
//Get and work with first page
DataObject root = pager.next();
DataObject customer1 = root.getDataObject("CUSTOMER[1]");
DataObject customer2 = root.getDataObject("CUSTOMER[2]");
assertEquals(1, customer1.getInt("ID"));
assertEquals(2, customer2.getInt("ID"));
//Get and work with the second page
root = pager.next();
customer1 = root.getDataObject("CUSTOMER[1]");
customer2 = root.getDataObject("CUSTOMER[2]");
assertEquals(3, customer1.getInt("ID"));
assertEquals(4, customer2.getInt("ID"));
// First page again
root = pager.previous();
customer1 = root.getDataObject("CUSTOMER[1]");
customer2 = root.getDataObject("CUSTOMER[2]");
assertEquals(1, customer1.getInt("ID"));
assertEquals(2, customer2.getInt("ID"));
}
public void testRandomPage() throws SQLException {
//Build the select command
Command select = Command.FACTORY
.createCommand("select * from CUSTOMER order by ID");
//Parameterize the command
select.setConnection(getConnection());
//Create a pager
Pager pager = new PagerImpl(select, 2);
//Get the first page
DataObject root = pager.getPage(1);
DataObject customer1 = root.getDataObject("CUSTOMER[1]");
DataObject customer2 = root.getDataObject("CUSTOMER[2]");
assertEquals(1, customer1.getInt("ID"));
assertEquals(2, customer2.getInt("ID"));
//Get the second page
root = pager.getPage(2);
customer1 = root.getDataObject("CUSTOMER[1]");
customer2 = root.getDataObject("CUSTOMER[2]");
assertEquals(3, customer1.getInt("ID"));
assertEquals(4, customer2.getInt("ID"));
// Get the first page again
root = pager.getPage(1);
customer1 = root.getDataObject("CUSTOMER[1]");
customer2 = root.getDataObject("CUSTOMER[2]");
assertEquals(1, customer1.getInt("ID"));
assertEquals(2, customer2.getInt("ID"));
}
}
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