/*
* Copyright (C) 2012-2015 DataStax Inc.
*
* 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 com.datastax.driver.core;
import com.datastax.driver.core.utils.CassandraVersion;
import org.testng.annotations.Test;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertTrue;
/**
* Test {@link ResultSet#wasApplied()} for conditional updates.
*/
@CassandraVersion(value = "2.0.0", description = "Conditional Updates requires 2.0+.")
public class ConditionalUpdateTest extends CCMTestsSupport {
@Override
public void onTestContextInitialized() {
execute("CREATE TABLE test(k1 int, k2 int, v int, PRIMARY KEY (k1, k2))");
}
@Test(groups = "short")
public void singleUpdateTest() {
session().execute("TRUNCATE test");
session().execute("INSERT INTO test (k1, k2, v) VALUES (1, 1, 1)");
ResultSet rs = session().execute("UPDATE test SET v = 3 WHERE k1 = 1 AND k2 = 1 IF v = 2");
assertFalse(rs.wasApplied());
// Ensure that reading the status does not consume a row:
assertFalse(rs.isExhausted());
rs = session().execute("UPDATE test SET v = 3 WHERE k1 = 1 AND k2 = 1 IF v = 1");
assertTrue(rs.wasApplied());
assertFalse(rs.isExhausted());
// Non-conditional statement
rs = session().execute("UPDATE test SET v = 4 WHERE k1 = 1 AND k2 = 1");
assertTrue(rs.wasApplied());
}
@Test(groups = "short")
public void batchUpdateTest() {
session().execute("TRUNCATE test");
session().execute("INSERT INTO test (k1, k2, v) VALUES (1, 1, 1)");
session().execute("INSERT INTO test (k1, k2, v) VALUES (1, 2, 1)");
PreparedStatement ps = session().prepare("UPDATE test SET v = :new WHERE k1 = :k1 AND k2 = :k2 IF v = :old");
BatchStatement batch = new BatchStatement();
batch.add(ps.bind().setInt("k1", 1).setInt("k2", 1).setInt("old", 2).setInt("new", 3)); // will fail
batch.add(ps.bind().setInt("k1", 1).setInt("k2", 2).setInt("old", 1).setInt("new", 3));
ResultSet rs = session().execute(batch);
assertFalse(rs.wasApplied());
}
@Test(groups = "short")
public void multipageResultSetTest() {
session().execute("TRUNCATE test");
session().execute("INSERT INTO test (k1, k2, v) VALUES (1, 1, 1)");
session().execute("INSERT INTO test (k1, k2, v) VALUES (1, 2, 1)");
// This is really contrived, we just want to cover the code path in ArrayBackedResultSet#MultiPage.
// Currently CAS update results are never multipage, so it's hard to come up with a meaningful example.
ResultSet rs = session().execute(new SimpleStatement("SELECT * FROM test WHERE k1 = 1").setFetchSize(1));
assertTrue(rs.wasApplied());
}
/**
* Test for #JAVA-358 - Directly expose CAS_RESULT_COLUMN.
* <p/>
* This test makes sure that the boolean flag {@code ResultSet.wasApplied()} is false when we try to insert a row
* which already exists.
*
* @see ResultSet#wasApplied()
*/
@Test(groups = "short")
public void insert_if_not_exist_should_support_wasApplied_boolean() {
// First, make sure the test table and the row exist
session().execute("CREATE TABLE IF NOT EXISTS Java358 (key int primary key, value int)");
ResultSet rs;
rs = session().execute("INSERT INTO Java358(key, value) VALUES (42, 42) IF NOT EXISTS");
assertTrue(rs.wasApplied());
// Then, make sure the flag reports correctly that we did not create a new row
rs = session().execute("INSERT INTO Java358(key, value) VALUES (42, 42) IF NOT EXISTS");
assertFalse(rs.wasApplied());
}
/**
* Test for #JAVA-358 - Directly expose CAS_RESULT_COLUMN.
* <p/>
* This test makes sure that the boolean flag {@code ResultSet.wasApplied()} is false when we try to delete a row
* which does not exist.
*
* @see ResultSet#wasApplied()
*/
@Test(groups = "short")
public void delete_if_not_exist_should_support_wasApplied_boolean() {
// First, make sure the test table and the row exist
session().execute("CREATE TABLE IF NOT EXISTS Java358 (key int primary key, value int)");
session().execute("INSERT INTO Java358(key, value) VALUES (42, 42)");
// Then, make sure the flag reports correctly that we did delete the row
ResultSet rs;
rs = session().execute("DELETE FROM Java358 WHERE KEY=42 IF EXISTS");
assertTrue(rs.wasApplied());
// Finally, make sure the flag reports correctly that we did did not delete an non-existing row
rs = session().execute("DELETE FROM Java358 WHERE KEY=42 IF EXISTS");
assertFalse(rs.wasApplied());
}
}