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;
  
  import java.nio.ByteBuffer;
  
  import org.apache.cassandra.index.sasi.disk.OnDiskIndexBuilder.TermSize;
  import org.apache.cassandra.index.sasi.utils.MappedBuffer;
  import org.apache.cassandra.db.marshal.AbstractType;
  
  import static org.apache.cassandra.index.sasi.disk.OnDiskIndexBuilder.IS_PARTIAL_BIT;
  
  public class Term
  {
      protected final MappedBuffer content;
      protected final TermSize termSize;
  
      private final boolean hasMarkedPartials;
  
      public Term(MappedBuffer content, TermSize size, boolean hasMarkedPartials)
      {
          this.content = content;
          this.termSize = size;
          this.hasMarkedPartials = hasMarkedPartials;
      }
  
      public ByteBuffer getTerm()
      {
          long offset = termSize.isConstant() ? content.position() : content.position() + 2;
          int  length = termSize.isConstant() ? termSize.size : readLength(content.position());
  
          return content.getPageRegion(offset, length);
      }
  
      public boolean isPartial()
      {
          return !termSize.isConstant()
                 && hasMarkedPartials
                 && (content.getShort(content.position()) & (1 << IS_PARTIAL_BIT)) != 0;
      }
  
      public long getDataOffset()
      {
          long position = content.position();
          return position + (termSize.isConstant() ? termSize.size : 2 + readLength(position));
      }
  
      public int compareTo(AbstractType<?> comparator, ByteBuffer query)
      {
          return compareTo(comparator, query, true);
      }
  
      public int compareTo(AbstractType<?> comparator, ByteBuffer query, boolean checkFully)
      {
          long position = content.position();
          int padding = termSize.isConstant() ? 0 : 2;
          int len = termSize.isConstant() ? termSize.size : readLength(position);
  
          return content.comparePageTo(position + padding, checkFully ? len : Math.min(len, query.remaining()), comparator, query);
      }
  
      private short readLength(long position)
      {
          return (short) (content.getShort(position) & ~(1 << IS_PARTIAL_BIT));
      }
  }
  