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/*
 *
 *  *  Copyright 2010-2016 OrientDB LTD (http://orientdb.com)
 *  *
 *  *  Licensed 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.
 *  *
 *  * For more information: http://orientdb.com
 *
 */
package com.orientechnologies.orient.core.sql.operator.math;

import com.orientechnologies.orient.core.command.OCommandContext;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.id.ORID;
import com.orientechnologies.orient.core.record.impl.ODocument;
import com.orientechnologies.orient.core.serialization.serializer.record.binary.ODocumentSerializer;
import com.orientechnologies.orient.core.sql.filter.OSQLFilterCondition;
import com.orientechnologies.orient.core.sql.operator.OIndexReuseType;
import com.orientechnologies.orient.core.sql.operator.OQueryOperator;
import java.math.BigDecimal;
import java.util.Date;

/**
 * MOD "%" operator.
 *
 * @author Luca Garulli (l.garulli--(at)--orientdb.com)
 */
public class OQueryOperatorMod extends OQueryOperator {

  public OQueryOperatorMod() {
    super("%", 10, false);
  }

  @Override
  public Object evaluateRecord(
      final OIdentifiable iRecord,
      ODocument iCurrentResult,
      final OSQLFilterCondition iCondition,
      Object iLeft,
      Object iRight,
      OCommandContext iContext,
      final ODocumentSerializer serializer) {
    if (iRight == null || iLeft == null) return null;

    if (iLeft instanceof Date) iLeft = ((Date) iLeft).getTime();
    if (iRight instanceof Date) iRight = ((Date) iRight).getTime();

    if (iLeft instanceof Number && iRight instanceof Number) {
      final Number l = (Number) iLeft;
      final Number r = (Number) iRight;
      if (l instanceof Integer) return l.intValue() % r.intValue();
      else if (l instanceof Long) return l.longValue() % r.longValue();
      else if (l instanceof Short) return l.shortValue() % r.shortValue();
      else if (l instanceof Float) return l.floatValue() % r.floatValue();
      else if (l instanceof Double) return l.doubleValue() % r.doubleValue();
      else if (l instanceof BigDecimal) {
        if (r instanceof BigDecimal) return ((BigDecimal) l).remainder((BigDecimal) r);
        else if (r instanceof Float)
          return ((BigDecimal) l).remainder(new BigDecimal(r.floatValue()));
        else if (r instanceof Double)
          return ((BigDecimal) l).remainder(new BigDecimal(r.doubleValue()));
        else if (r instanceof Long)
          return ((BigDecimal) l).remainder(new BigDecimal(r.longValue()));
        else if (r instanceof Integer)
          return ((BigDecimal) l).remainder(new BigDecimal(r.intValue()));
        else if (r instanceof Short)
          return ((BigDecimal) l).remainder(new BigDecimal(r.shortValue()));
      }
    }

    return null;
  }

  @Override
  public OIndexReuseType getIndexReuseType(Object iLeft, Object iRight) {
    return OIndexReuseType.NO_INDEX;
  }

  @Override
  public ORID getBeginRidRange(Object iLeft, Object iRight) {
    return null;
  }

  @Override
  public ORID getEndRidRange(Object iLeft, Object iRight) {
    return null;
  }
}