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.asterix.om.pointables;
  
  import org.apache.asterix.om.pointables.visitor.IVisitablePointableVisitor;
  import org.apache.asterix.om.types.IAType;
  import org.apache.asterix.om.util.container.IObjectFactory;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.data.std.api.IValueReference;
  
  /**
   * This class represents a flat field, e.g., int field, string field, and
   * so on, based on a binary representation.
   */
  public class AFlatValuePointable extends AbstractVisitablePointable {
  
      /**
       * DO NOT allow to create AFlatValuePointable object arbitrarily, force to
       * use object pool based allocator. The factory is not public so that it
       * cannot called in other places than PointableAllocator.
       */
      static IObjectFactory<AFlatValuePointable, IAType> FACTORY = type -> new AFlatValuePointable();
  
      /**
       * private constructor, to prevent arbitrary creation
       */
      private AFlatValuePointable() {
  
      }
  
      @Override
      public boolean equals(Object o) {
          if (!(o instanceof IValueReference))
              return false;
  
          // get right raw data
          IValueReference ivf = (IValueReference) o;
          byte[] odata = ivf.getByteArray();
          int ostart = ivf.getStartOffset();
          int olen = ivf.getLength();
  
          // get left raw data
          byte[] data = getByteArray();
          int start = getStartOffset();
          int len = getLength();
  
          // bytes length should be equal
          if (len != olen)
              return false;
  
          // check each byte
          for (int i = 0; i < len; i++) {
              if (data[start + i] != odata[ostart + i])
                  return false;
          }
          return true;
      }
  
      @Override
      public <R, T> R accept(IVisitablePointableVisitor<R, T> vistor, T tag) throws HyracksDataException {
          return vistor.visit(this, tag);
      }
  }
  