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* 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,
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* See the License for the specific language governing permissions and
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package org.apache.cassandra.cql3;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.PreparedStatement;
import com.datastax.driver.core.Session;
import com.datastax.driver.core.exceptions.SyntaxError;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.Schema;
import org.apache.cassandra.index.StubIndex;
import org.apache.cassandra.service.EmbeddedCassandraService;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
public class PreparedStatementsTest extends SchemaLoader
{
private static Cluster cluster;
private static Session session;
private static final String KEYSPACE = "prepared_stmt_cleanup";
private static final String createKsStatement = "CREATE KEYSPACE " + KEYSPACE +
" WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };";
private static final String dropKsStatement = "DROP KEYSPACE IF EXISTS " + KEYSPACE;
@BeforeClass
public static void setup() throws Exception
{
Schema.instance.clear();
EmbeddedCassandraService cassandra = new EmbeddedCassandraService();
cassandra.start();
// Currently the native server start method return before the server is fully binded to the socket, so we need
// to wait slightly before trying to connect to it. We should fix this but in the meantime using a sleep.
Thread.sleep(500);
cluster = Cluster.builder().addContactPoint("127.0.0.1")
.withPort(DatabaseDescriptor.getNativeTransportPort())
.build();
session = cluster.connect();
session.execute(dropKsStatement);
session.execute(createKsStatement);
}
@AfterClass
public static void tearDown() throws Exception
{
cluster.close();
}
@Test
public void testInvalidatePreparedStatementsOnDrop()
{
String createTableStatement = "CREATE TABLE IF NOT EXISTS " + KEYSPACE + ".qp_cleanup (id int PRIMARY KEY, cid int, val text);";
String dropTableStatement = "DROP TABLE IF EXISTS " + KEYSPACE + ".qp_cleanup;";
session.execute(createTableStatement);
PreparedStatement prepared = session.prepare("INSERT INTO " + KEYSPACE + ".qp_cleanup (id, cid, val) VALUES (?, ?, ?)");
PreparedStatement preparedBatch = session.prepare("BEGIN BATCH " +
"INSERT INTO " + KEYSPACE + ".qp_cleanup (id, cid, val) VALUES (?, ?, ?);" +
"APPLY BATCH;");
session.execute(dropTableStatement);
session.execute(createTableStatement);
session.execute(prepared.bind(1, 1, "value"));
session.execute(preparedBatch.bind(2, 2, "value2"));
session.execute(dropKsStatement);
session.execute(createKsStatement);
session.execute(createTableStatement);
// The driver will get a response about the prepared statement being invalid, causing it to transparently
// re-prepare the statement. We'll rely on the fact that we get no errors while executing this to show that
// the statements have been invalidated.
session.execute(prepared.bind(1, 1, "value"));
session.execute(preparedBatch.bind(2, 2, "value2"));
session.execute(dropKsStatement);
}
@Test
public void testStatementRePreparationOnReconnect()
{
session.execute(dropKsStatement);
session.execute(createKsStatement);
session.execute("CREATE TABLE IF NOT EXISTS " + KEYSPACE + ".qp_test (id int PRIMARY KEY, cid int, val text);");
String insertCQL = "INSERT INTO " + KEYSPACE + ".qp_test (id, cid, val) VALUES (?, ?, ?)";
String selectCQL = "Select * from " + KEYSPACE + ".qp_test where id = ?";
PreparedStatement preparedInsert = session.prepare(insertCQL);
PreparedStatement preparedSelect = session.prepare(selectCQL);
session.execute(preparedInsert.bind(1, 1, "value"));
assertEquals(1, session.execute(preparedSelect.bind(1)).all().size());
cluster.close();
cluster = Cluster.builder().addContactPoint("127.0.0.1")
.withPort(DatabaseDescriptor.getNativeTransportPort())
.build();
session = cluster.connect();
preparedInsert = session.prepare(insertCQL);
preparedSelect = session.prepare(selectCQL);
session.execute(preparedInsert.bind(1, 1, "value"));
assertEquals(1, session.execute(preparedSelect.bind(1)).all().size());
}
@Test
public void prepareAndExecuteWithCustomExpressions() throws Throwable
{
session.execute(dropKsStatement);
session.execute(createKsStatement);
String table = "custom_expr_test";
String index = "custom_index";
session.execute(String.format("CREATE TABLE IF NOT EXISTS %s.%s (id int PRIMARY KEY, cid int, val text);",
KEYSPACE, table));
session.execute(String.format("CREATE CUSTOM INDEX %s ON %s.%s(val) USING '%s'",
index, KEYSPACE, table, StubIndex.class.getName()));
session.execute(String.format("INSERT INTO %s.%s(id, cid, val) VALUES (0, 0, 'test')", KEYSPACE, table));
PreparedStatement prepared1 = session.prepare(String.format("SELECT * FROM %s.%s WHERE expr(%s, 'foo')",
KEYSPACE, table, index));
assertEquals(1, session.execute(prepared1.bind()).all().size());
PreparedStatement prepared2 = session.prepare(String.format("SELECT * FROM %s.%s WHERE expr(%s, ?)",
KEYSPACE, table, index));
assertEquals(1, session.execute(prepared2.bind("foo bar baz")).all().size());
try
{
session.prepare(String.format("SELECT * FROM %s.%s WHERE expr(?, 'foo bar baz')", KEYSPACE, table));
fail("Expected syntax exception, but none was thrown");
}
catch(SyntaxError e)
{
assertEquals("Bind variables cannot be used for index names", e.getMessage());
}
}
}