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/*
Derby - Class org.apache.derbyTesting.functionTests.tests.jdbc4.BlobSetMethodsTest
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.derbyTesting.functionTests.tests.jdbc4;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import junit.framework.Test;
import org.apache.derbyTesting.junit.BaseJDBCTestCase;
import org.apache.derbyTesting.junit.TestConfiguration;
/**
* tests set methods of blob
*/
public class BlobSetMethodsTest extends BaseJDBCTestCase {
private static int BUFFER_SIZE = 1024;
private static int UPDATE_SIZE = 100;
public BlobSetMethodsTest (String name) {
super (name);
}
protected void setUp() throws Exception {
Connection con = getConnection();
Statement stmt = con.createStatement();
stmt.execute ("create table blobtest (id integer, data Blob)");
stmt.close();
con.close();
}
/**
* Create test suite.
*/
public static Test suite() {
return TestConfiguration.defaultSuite (BlobSetMethodsTest.class);
}
/**
* Tests large blob (more than 4k) to ensure LOBStreamControl uses file.
*/
public void testSetBytesLargeBlob () throws SQLException {
Connection con = getConnection();
con.setAutoCommit (false);
PreparedStatement pstmt = con.prepareStatement("insert into " +
"blobtest (id, data) values (?,?)");
Blob blob = con.createBlob();
byte [] data = new byte [BUFFER_SIZE];
for (int i = 0; i < BUFFER_SIZE; i++) {
data [i] = (byte) (i % 255);
}
//now add more than 4k so file get in use
for (int i = 0; i < 5; i++)
blob.setBytes (i * BUFFER_SIZE + 1, data);
assertEquals (BUFFER_SIZE * 5 , blob.length());
//update blob in the middle
byte [] data1 = new byte [UPDATE_SIZE];
for (int i = 0; i < UPDATE_SIZE; i++)
data1 [i] = 120;//just any value
blob.setBytes (BUFFER_SIZE + 1, data1);
blob.setBytes (BUFFER_SIZE * 5 + 1, data1);
assertEquals (5 * BUFFER_SIZE + UPDATE_SIZE, blob.length());
//insert it into table
pstmt.setInt (1, 3);
pstmt.setBlob (2, blob);
pstmt.executeUpdate ();
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select data from blobtest where " +
"id = 3");
assertEquals(true, rs.next());
blob = rs.getBlob (1);
byte [] data2 = blob.getBytes (BUFFER_SIZE + 1, UPDATE_SIZE);
assertEquals (5 * BUFFER_SIZE + UPDATE_SIZE, blob.length());
for (int i = 0; i < UPDATE_SIZE; i++)
assertEquals (data1 [i], data2 [i]);
data2 = blob.getBytes (5 * BUFFER_SIZE + 1, UPDATE_SIZE);
for (int i = 0; i < UPDATE_SIZE; i++)
assertEquals (data1 [i], data2 [i]);
//test truncate
blob.truncate (BUFFER_SIZE);
assertEquals ("truncate failed", BUFFER_SIZE, blob.length());
rs.close();
con.commit();
stmt.close();
pstmt.close();
}
/**
* tests set bytes method of blob in memory only mode (less than 4k)
*/
public void testSetBytesSmallBlob () throws SQLException {
Connection con = getConnection();
con.setAutoCommit (false);
PreparedStatement pstmt = con.prepareStatement("insert into " +
"blobtest (id, data) values (?,?)");
pstmt.setInt (1,1);
Blob blob = con.createBlob();
//add 1024 bytes
byte [] data = new byte [BUFFER_SIZE];
for (int i = 0; i < BUFFER_SIZE; i++) {
data [i] = (byte) (i % 255);
}
blob.setBytes (1, data);
assertEquals (BUFFER_SIZE, blob.length());
pstmt.setBlob (2, blob);
pstmt.executeUpdate();
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(
"select data from blobtest where id = 1");
assertEquals(true, rs.next());
blob = rs.getBlob (1);
assertEquals (BUFFER_SIZE, blob.length());
//update blob in the middle
byte [] data1 = new byte [UPDATE_SIZE];
for (int i = 0; i < UPDATE_SIZE; i++)
data1 [i] = 120;//just any value
blob.setBytes (UPDATE_SIZE, data1);
byte [] data2 = blob.getBytes (100, UPDATE_SIZE);
for (int i = 0; i < UPDATE_SIZE; i++)
assertEquals (data1 [i], data2 [i]);
//update it at the end
blob.setBytes (BUFFER_SIZE + 1, data1);
assertEquals (BUFFER_SIZE + UPDATE_SIZE, blob.length());
data2 = blob.getBytes (BUFFER_SIZE + 1, UPDATE_SIZE);
for (int i = 0; i < UPDATE_SIZE; i++)
assertEquals (data1 [i], data2 [i]);
//insert the blob and test again
pstmt.setInt (1, 2);
pstmt.setBlob (2, blob);
pstmt.executeUpdate();
rs = stmt.executeQuery("select data from blobtest where " +
"id = 2");
assertEquals(true, rs.next());
blob = rs.getBlob (1);
assertEquals (BUFFER_SIZE + UPDATE_SIZE, blob.length());
data2 = blob.getBytes (100, UPDATE_SIZE);
for (int i = 0; i < UPDATE_SIZE; i++)
assertEquals (data1 [i], data2 [i]);
data2 = blob.getBytes (BUFFER_SIZE + 1, UPDATE_SIZE);
for (int i = 0; i < UPDATE_SIZE; i++)
assertEquals (data1 [i], data2 [i]);
//test truncate on small size blob
blob = con.createBlob();
data = new byte [100];
for (int i = 0; i < 100; i++) {
data [i] = (byte) i;
}
blob.setBytes (1, data);
assertEquals (blob.length(), 100);
blob.truncate (50);
assertEquals (blob.length(), 50);
blob.setBytes (1, data);
assertEquals ("set failed", blob.length(), 100);
blob.truncate (50);
assertEquals ("truncation failed", blob.length(), 50);
rs.close();
con.commit();
stmt.close();
pstmt.close();
}
protected void tearDown() throws Exception {
Connection con = getConnection();
con.setAutoCommit (true);
Statement stmt = con.createStatement();
stmt.execute ("drop table blobtest");
stmt.close();
super.tearDown();
}
}
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