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com.datastax.driver.core.querybuilder.Truncate Maven / Gradle / Ivy

/*
 * Copyright 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.querybuilder;

import com.datastax.driver.core.CodecRegistry;
import com.datastax.driver.core.ColumnMetadata;
import com.datastax.driver.core.Metadata;
import com.datastax.driver.core.TableMetadata;
import java.util.Arrays;
import java.util.List;

/** A built TRUNCATE statement. */
public class Truncate extends BuiltStatement {

  private final String table;

  Truncate(String keyspace, String table) {
    this(keyspace, table, null, null);
  }

  Truncate(TableMetadata table) {
    this(
        Metadata.quoteIfNecessary(table.getKeyspace().getName()),
        Metadata.quoteIfNecessary(table.getName()),
        Arrays.asList(new Object[table.getPartitionKey().size()]),
        table.getPartitionKey());
  }

  Truncate(
      String keyspace,
      String table,
      List routingKeyValues,
      List partitionKey) {
    super(keyspace, partitionKey, routingKeyValues);
    this.table = table;
  }

  @Override
  protected StringBuilder buildQueryString(List variables, CodecRegistry codecRegistry) {
    StringBuilder builder = new StringBuilder();

    builder.append("TRUNCATE ");
    if (keyspace != null) Utils.appendName(keyspace, builder).append('.');
    Utils.appendName(table, builder);

    return builder;
  }
}