TraversalTest.java
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/*
Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
The MySQL Connector/J is licensed under the terms of the GPLv2
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
this software, see the FOSS License Exception
<http://www.mysql.com/about/legal/licensing/foss-exception.html>.
This program is free software; you can redistribute it and/or modify it under the terms
of the GNU General Public License as published by the Free Software Foundation; version 2
of the License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this
program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
Floor, Boston, MA 02110-1301 USA
*/
package testsuite.simple;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import testsuite.BaseTestCase;
/**
* Tests result set traversal methods.
*/
public class TraversalTest extends BaseTestCase {
/**
* Creates a new TraversalTest object.
*
* @param name
*/
public TraversalTest(String name) {
super(name);
}
/**
* Runs all test cases in this test suite
*
* @param args
*/
public static void main(String[] args) {
junit.textui.TestRunner.run(TraversalTest.class);
}
@Override
public void setUp() throws Exception {
super.setUp();
createTestTable();
}
@Override
public void tearDown() throws Exception {
try {
this.stmt.executeUpdate("DROP TABLE TRAVERSAL");
} catch (SQLException SQLE) {
}
super.tearDown();
}
public void testTraversal() throws SQLException {
Statement scrollableStmt = null;
try {
scrollableStmt = this.conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
this.rs = scrollableStmt.executeQuery("SELECT * FROM TRAVERSAL ORDER BY pos");
// Test isFirst()
if (this.rs.first()) {
assertTrue("ResultSet.isFirst() failed", this.rs.isFirst());
this.rs.relative(-1);
assertTrue("ResultSet.isBeforeFirst() failed", this.rs.isBeforeFirst());
}
// Test isLast()
if (this.rs.last()) {
assertTrue("ResultSet.isLast() failed", this.rs.isLast());
this.rs.relative(1);
assertTrue("ResultSet.isAfterLast() failed", this.rs.isAfterLast());
}
int count = 0;
this.rs.beforeFirst();
boolean forwardOk = true;
while (this.rs.next()) {
int pos = this.rs.getInt("POS");
// test case-sensitive column names
pos = this.rs.getInt("pos");
pos = this.rs.getInt("Pos");
pos = this.rs.getInt("POs");
pos = this.rs.getInt("PoS");
pos = this.rs.getInt("pOS");
pos = this.rs.getInt("pOs");
pos = this.rs.getInt("poS");
if (pos != count) {
forwardOk = false;
}
assertTrue("ResultSet.getRow() failed.", pos == (this.rs.getRow() - 1));
count++;
}
assertTrue("Only traversed " + count + " / 100 rows", forwardOk);
boolean isAfterLast = this.rs.isAfterLast();
assertTrue("ResultSet.isAfterLast() failed", isAfterLast);
this.rs.afterLast();
// Scroll backwards
count = 99;
boolean reverseOk = true;
while (this.rs.previous()) {
int pos = this.rs.getInt("pos");
if (pos != count) {
reverseOk = false;
}
count--;
}
assertTrue("ResultSet.previous() failed", reverseOk);
boolean isBeforeFirst = this.rs.isBeforeFirst();
assertTrue("ResultSet.isBeforeFirst() failed", isBeforeFirst);
this.rs.next();
boolean isFirst = this.rs.isFirst();
assertTrue("ResultSet.isFirst() failed", isFirst);
// Test absolute positioning
this.rs.absolute(50);
int pos = this.rs.getInt("pos");
assertTrue("ResultSet.absolute() failed", pos == 49);
// Test relative positioning
this.rs.relative(-1);
pos = this.rs.getInt("pos");
assertTrue("ResultSet.relative(-1) failed", pos == 48);
// Test bogus absolute index
boolean onResultSet = this.rs.absolute(200);
assertTrue("ResultSet.absolute() to point off result set failed", onResultSet == false);
onResultSet = this.rs.absolute(100);
assertTrue("ResultSet.absolute() from off this.rs to on this.rs failed", onResultSet);
onResultSet = this.rs.absolute(-99);
assertTrue("ResultSet.absolute(-99) failed", onResultSet);
assertTrue("ResultSet absolute(-99) failed", this.rs.getInt(1) == 1);
} finally {
if (scrollableStmt != null) {
try {
scrollableStmt.close();
} catch (SQLException sqlEx) {
// ignore
}
}
}
}
private void createTestTable() throws SQLException {
//
// Catch the error, the table might exist
//
try {
this.stmt.executeUpdate("DROP TABLE TRAVERSAL");
} catch (SQLException SQLE) {
// ignore
}
this.stmt.executeUpdate("CREATE TABLE TRAVERSAL (pos int PRIMARY KEY, stringdata CHAR(32))");
for (int i = 0; i < 100; i++) {
this.stmt.executeUpdate("INSERT INTO TRAVERSAL VALUES (" + i + ", 'StringData')");
}
}
}