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.runtime.operators.joins.interval.utils;
  
  import org.apache.asterix.om.pointables.nonvisitor.AIntervalPointable;
  import org.apache.asterix.runtime.evaluators.functions.temporal.IntervalLogic;
  import org.apache.asterix.runtime.operators.joins.interval.utils.memory.IntervalJoinUtil;
  import org.apache.hyracks.api.comm.IFrameTupleAccessor;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  
  public abstract class AbstractIntervalJoinUtil implements IIntervalJoinUtil {
  
      protected final int idBuild;
      protected final int idProbe;
  
      protected final IntervalLogic il = new IntervalLogic();
      protected final AIntervalPointable ipBuild = (AIntervalPointable) AIntervalPointable.FACTORY.createPointable();
      protected final AIntervalPointable ipProbe = (AIntervalPointable) AIntervalPointable.FACTORY.createPointable();
  
      public AbstractIntervalJoinUtil(int idBuild, int idProbe) {
          this.idBuild = idBuild;
          this.idProbe = idProbe;
      }
  
      /**
       * Right (second argument) interval starts before left (first argument) interval ends.
       */
      @Override
      public boolean checkToSaveInMemory(IFrameTupleAccessor buildAccessor, int buildTupleIndex,
              IFrameTupleAccessor probeAccessor, int probeTupleIndex) {
          long buildStart = IntervalJoinUtil.getIntervalStart(buildAccessor, buildTupleIndex, idBuild);
          long probeStart = IntervalJoinUtil.getIntervalStart(probeAccessor, probeTupleIndex, idProbe);
          return buildStart <= probeStart;
      }
  
      /**
       * Left (first argument) interval starts after the Right (second argument) interval ends.
       */
      @Override
      public boolean checkToRemoveInMemory(IFrameTupleAccessor buildAccessor, int buildTupleIndex,
              IFrameTupleAccessor probeAccessor, int probeTupleIndex) {
          long buildStart = IntervalJoinUtil.getIntervalStart(buildAccessor, buildTupleIndex, idBuild);
          long probeStart = IntervalJoinUtil.getIntervalStart(probeAccessor, probeTupleIndex, idProbe);
          return buildStart > probeStart;
      }
  
      @Override
      public boolean checkToSaveInResult(IFrameTupleAccessor buildAccessor, int buildTupleIndex,
              IFrameTupleAccessor probeAccessor, int probeTupleIndex) throws HyracksDataException {
          IntervalJoinUtil.getIntervalPointable(buildAccessor, buildTupleIndex, idBuild, ipBuild);
          IntervalJoinUtil.getIntervalPointable(probeAccessor, probeTupleIndex, idProbe, ipProbe);
          return compareInterval(ipBuild, ipProbe);
      }
  
      /**
       * Right (second argument) interval starts before left (first argument) interval ends.
       */
      @Override
      public boolean checkForEarlyExit(IFrameTupleAccessor buildAccessor, int buildTupleIndex,
              IFrameTupleAccessor probeAccessor, int probeTupleIndex) {
          long buildEnd = IntervalJoinUtil.getIntervalEnd(buildAccessor, buildTupleIndex, idBuild);
          long probeStart = IntervalJoinUtil.getIntervalStart(probeAccessor, probeTupleIndex, idProbe);
          return buildEnd < probeStart;
      }
  
      @Override
      public abstract boolean compareInterval(AIntervalPointable ipBuild, AIntervalPointable ipProbe)
              throws HyracksDataException;
  
      @Override
      public boolean checkToLoadNextProbeTuple(IFrameTupleAccessor buildAccessor, int buildTupleIndex,
              IFrameTupleAccessor probeAccessor, int probeTupleIndex) {
          long buildEnd = IntervalJoinUtil.getIntervalEnd(buildAccessor, buildTupleIndex, idBuild);
          long probeStart = IntervalJoinUtil.getIntervalStart(probeAccessor, probeTupleIndex, idProbe);
          return buildEnd > probeStart;
      }
  }
  