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.sasi.memory;
  
  import java.nio.ByteBuffer;
  
  import org.apache.cassandra.db.DecoratedKey;
  import org.apache.cassandra.db.marshal.AbstractType;
  import org.apache.cassandra.index.sasi.conf.ColumnIndex;
  import org.apache.cassandra.index.sasi.disk.Token;
  import org.apache.cassandra.index.sasi.plan.Expression;
  import org.apache.cassandra.index.sasi.utils.RangeIterator;
  import org.apache.cassandra.index.sasi.utils.TypeUtil;
  import org.apache.cassandra.utils.FBUtilities;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class IndexMemtable
  {
      private static final Logger logger = LoggerFactory.getLogger(IndexMemtable.class);
  
      private final MemIndex index;
  
      public IndexMemtable(ColumnIndex columnIndex)
      {
          this.index = MemIndex.forColumn(columnIndex.keyValidator(), columnIndex);
      }
  
      public long index(DecoratedKey key, ByteBuffer value)
      {
          if (value == null || value.remaining() == 0)
              return 0;
  
          AbstractType<?> validator = index.columnIndex.getValidator();
          if (!TypeUtil.isValid(value, validator))
          {
              int size = value.remaining();
              if ((value = TypeUtil.tryUpcast(value, validator)) == null)
              {
                  logger.error("Can't add column {} to index for key: {}, value size {}, validator: {}.",
                               index.columnIndex.getColumnName(),
                               index.columnIndex.keyValidator().getString(key.getKey()),
                               FBUtilities.prettyPrintMemory(size),
                               validator);
                  return 0;
              }
          }
  
          return index.add(key, value);
      }
  
      public RangeIterator<Long, Token> search(Expression expression)
      {
          return index == null ? null : index.search(expression);
      }
  }
  