content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * 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,
   * 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 org.apache.cassandra.cql3.functions;
  
  import java.nio.ByteBuffer;
  
  import org.apache.cassandra.db.marshal.Int32Type;
  import org.apache.cassandra.db.marshal.UTF8Type;
  import org.apache.cassandra.exceptions.InvalidRequestException;
  import org.apache.cassandra.tcm.Transformation;
  import org.apache.cassandra.utils.ByteBufferUtil;
  
  public class ClusterMetadataFcts
  {
      public static void addFunctionsTo(NativeFunctions functions)
      {
          functions.add(transformationKind);
      }
  
      public static final NativeScalarFunction transformationKind = new TransformationKind();
      private static final class TransformationKind extends NativeScalarFunction
      {
  
          private TransformationKind()
          {
              super("transformation_kind", UTF8Type.instance, Int32Type.instance);
          }
  
          @Override
          public ByteBuffer execute(Arguments arguments) throws InvalidRequestException
          {
              Number id = arguments.get(0);
              if (id.intValue() < 0 || id.intValue() > Transformation.Kind.values().length -1)
                  throw new InvalidRequestException(id + " is not a valid Transformation.Kind id");
  
              Transformation.Kind kind = Transformation.Kind.fromId(id.intValue());
              return ByteBufferUtil.bytes(kind.name());
  
          }
      }
  }
  