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   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
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   *
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  package org.apache.cassandra.distributed.test;
  
  import java.util.List;
  import java.util.stream.Collectors;
  
  import org.junit.Test;
  
  import com.datastax.driver.core.PreparedStatement;
  import com.datastax.driver.core.Session;
  import org.apache.cassandra.cql3.QueryProcessor;
  import org.apache.cassandra.distributed.api.ICluster;
  import org.apache.cassandra.distributed.api.IInvokableInstance;
  import org.apache.cassandra.service.StorageService;
  import org.assertj.core.util.Lists;
  
  import static org.apache.cassandra.distributed.api.Feature.GOSSIP;
  import static org.apache.cassandra.distributed.api.Feature.NATIVE_PROTOCOL;
  import static org.apache.cassandra.distributed.api.Feature.NETWORK;
  import static org.junit.Assert.assertEquals;
  
  public class PrepareBatchStatementsTest extends TestBaseImpl
  {
      @Test
      public void testPreparedBatch() throws Exception
      {
          try (ICluster<IInvokableInstance> c = init(builder().withNodes(1)
                                                              .withConfig(config -> config.with(GOSSIP, NETWORK, NATIVE_PROTOCOL))
                                                              .start()))
          {
              try (com.datastax.driver.core.Cluster cluster = com.datastax.driver.core.Cluster.builder()
                                                                                              .addContactPoint("127.0.0.1")
                                                                                              .build();
                   Session s = cluster.connect())
              {
                  c.schemaChange(withKeyspace("CREATE KEYSPACE ks1 WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1};"));
                  c.schemaChange(withKeyspace("CREATE TABLE ks1.tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck));"));
                  c.schemaChange(withKeyspace("CREATE KEYSPACE ks2 WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1};"));
                  c.schemaChange(withKeyspace("CREATE TABLE ks2.tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck));"));
  
  
                  String batch1 = "BEGIN BATCH\n" +
                                  "UPDATE ks1.tbl SET v = ? where pk = ? and ck = ?;\n" +
                                  "UPDATE ks2.tbl SET v = ? where pk = ? and ck = ?;\n" +
                                  "APPLY BATCH;";
                  String batch2 = "BEGIN BATCH\n" +
                                  "INSERT INTO ks1.tbl (pk, ck, v) VALUES (?, ?, ?);\n" +
                                  "INSERT INTO tbl (pk, ck, v) VALUES (?, ?, ?);\n" +
                                  "APPLY BATCH;";
  
  
                  PreparedStatement prepared;
  
                  prepared = s.prepare(batch1);
                  s.execute(prepared.bind(1, 1, 1, 1, 1, 1));
                  c.get(1).runOnInstance(() -> {
                      // no USE here, only a fully qualified batch - should get stored ONCE
                      List<String> stmts = StorageService.instance.getPreparedStatements().stream().map(p -> p.right).collect(Collectors.toList());
                      assertEquals(Lists.newArrayList(batch1), stmts);
                      QueryProcessor.clearPreparedStatements(false);
                  });
  
                  s.execute("use ks2");
                  prepared = s.prepare(batch1);
                  s.execute(prepared.bind(1, 1, 1, 1, 1, 1));
                  c.get(1).runOnInstance(() -> {
                      // after USE, fully qualified - should get stored twice! Once with null keyspace (new behaviour) once with ks2 keyspace (old behaviour)
                      List<String> stmts = StorageService.instance.getPreparedStatements().stream().map(p -> p.right).collect(Collectors.toList());
                      assertEquals(Lists.newArrayList(batch1, batch1), stmts);
                      QueryProcessor.clearPreparedStatements(false);
                  });
  
                  prepared = s.prepare(batch2);
                  s.execute(prepared.bind(1, 1, 1, 1, 1, 1));
                  c.get(1).runOnInstance(() -> {
                      // after USE, should get stored twice, once with keyspace, once without
                      List<String> stmts = StorageService.instance.getPreparedStatements().stream().map(p -> p.right).collect(Collectors.toList());
                      assertEquals(Lists.newArrayList(batch2, batch2), stmts);
                      QueryProcessor.clearPreparedStatements(false);
                  });
              }
          }
      }
  }