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.index.sai.cql.types.multicell;
  
  import java.util.Collection;
  import java.util.Collections;
  
  import org.apache.cassandra.index.sai.cql.types.DataSet;
  import org.apache.cassandra.index.sai.cql.types.QuerySet;
  
  import static org.apache.cassandra.index.sai.cql.types.IndexingTypeSupport.NUMBER_OF_VALUES;
  
  public class FrozenUDTDataSet extends DataSet<Object>
  {
      private final DataSet<?>[] elementDataSets;
  
      private volatile String udt;
  
      public FrozenUDTDataSet(DataSet<?>... elementDataSets)
      {
          this.elementDataSets = elementDataSets;
  
          values = new Object[NUMBER_OF_VALUES];
          for (int index = 0; index < NUMBER_OF_VALUES; index++)
          {
              Object[] fields = new Object[elementDataSets.length * 2]; // field name and filed value
              for (int i = 0; i < elementDataSets.length; i++)
              {
                  fields[i * 2] = elementDataSets[i].toString();
                  fields[i * 2 + 1] = elementDataSets[i].values[getRandom().nextIntBetween(0, elementDataSets[i].values.length - 1)];
              }
  
              values[index] = userType(fields);
          }
      }
  
      @Override
      public void init()
      {
          StringBuilder fields = new StringBuilder();
          for (int i = 0; i < elementDataSets.length; i++)
          {
              if (i != 0)
                  fields.append(", ");
  
              fields.append("v_").append(i).append(' ').append(elementDataSets[i]);
          }
          udt = createType(String.format("CREATE TYPE %%s(%s)", fields));
      }
  
      @Override
      public QuerySet querySet()
      {
          return new QuerySet.FrozenTuple();
      }
  
      @Override
      public Collection<String> decorateIndexColumn(String column)
      {
          return Collections.singletonList(column);
      }
  
      public String toString()
      {
          return String.format("frozen<%s>", udt);
      }
  }
  