How to use

dropKeyspace

method

in

com.datastax.driver.core.schemabuilder.SchemaBuilder

@Test(groups = "unit")
public void should_drop_keyspace() throws Exception {
 // When
 SchemaStatement statement = dropKeyspace("test");
 // Then
 assertThat(statement.getQueryString()).isEqualTo("DROP KEYSPACE test");
}

protected void clearKeyspace() {
  // Drop keyspace with non-keyspace-session
  Statement stmt = SchemaBuilder.dropKeyspace(this.keyspace).ifExists();
  LOG.debug("Drop keyspace: {}", stmt);
  Session session = this.cluster().connect();
  try {
    session.execute(stmt);
  } finally {
    if (!session.isClosed()) {
      session.close();
    }
  }
}

 @Test(groups = "unit")
 public void should_drop_keyspace_if_exists() throws Exception {
  // When
  SchemaStatement statement = dropKeyspace("test").ifExists();

  // Then
  assertThat(statement.getQueryString()).isEqualTo("DROP KEYSPACE IF EXISTS test");
 }
}

@Override
public void deleteAll() throws Exception {
 state.tableExistsCache.clear();
 state.preparedRangeReadsPerTable.clear();
 state.preparedRowReadPerTable.clear();
 state.preparedWritesPerTable.clear();
 session.execute(SchemaBuilder.dropKeyspace(gwNamespace).ifExists());
}

@Test(groups = "unit")
public void should_drop_keyspace() throws Exception {
 // When
 SchemaStatement statement = dropKeyspace("test");
 // Then
 assertThat(statement.getQueryString()).isEqualTo("DROP KEYSPACE test");
}

protected void clearKeyspace() {
  // Drop keyspace with non-keyspace-session
  Statement stmt = SchemaBuilder.dropKeyspace(this.keyspace).ifExists();
  LOG.debug("Drop keyspace: {}", stmt);
  Session session = this.cluster().connect();
  try {
    session.execute(stmt);
  } finally {
    if (!session.isClosed()) {
      session.close();
    }
  }
}

 @Test(groups = "unit")
 public void should_drop_keyspace_if_exists() throws Exception {
  // When
  SchemaStatement statement = dropKeyspace("test").ifExists();

  // Then
  assertThat(statement.getQueryString()).isEqualTo("DROP KEYSPACE IF EXISTS test");
 }
}

@Override
public void clearStorage() throws BackendException {
  if (this.storageConfig.get(DROP_ON_CLEAR)) {
    this.session.execute(dropKeyspace(this.keyspace));
  } else if (this.exists()) {
    final Future<Seq<ResultSet>> result = Future.sequence(
      Iterator.ofAll(this.cluster.getMetadata().getKeyspace(this.keyspace).getTables())
        .map(table -> Future.fromJavaFuture(this.session.executeAsync(truncate(this.keyspace, table.getName())))));
    result.await();
  } else {
    LOGGER.info("Keyspace {} does not exist in the cluster", this.keyspace);
  }
}