content: /*
   * Copyright (C) 2016-2023 ActionTech.
   * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
   */
  
  package com.actiontech.dble.plan.common.item.function.timefunc;
  
  import com.actiontech.dble.plan.common.item.Item;
  import com.actiontech.dble.plan.common.item.function.ItemFunc;
  import com.actiontech.dble.plan.common.item.function.primary.ItemIntFunc;
  import com.actiontech.dble.plan.common.time.MyTime;
  
  import java.math.BigInteger;
  import java.util.List;
  
  public class ItemFuncPeriodAdd extends ItemIntFunc {
  
      public ItemFuncPeriodAdd(List<Item> args, int charsetIndex) {
          super(args, charsetIndex);
      }
  
      @Override
      public final String funcName() {
          return "period_add";
      }
  
      @Override
      public BigInteger valInt() {
          long period = args.get(0).valInt().longValue();
          long months = args.get(1).valInt().longValue();
  
          if ((nullValue = (args.get(0).isNullValue() || args.get(1).isNullValue())) || period == 0L)
              return BigInteger.ZERO; /* purecov: inspected */
          return BigInteger.valueOf(MyTime.convertMonthToPeriod(MyTime.convertPeriodToMonth(period) + months));
      }
  
      @Override
      public void fixLengthAndDec() {
          maxLength = 6;
      }
  
      @Override
      public ItemFunc nativeConstruct(List<Item> realArgs) {
          return new ItemFuncPeriodAdd(realArgs, charsetIndex);
      }
  }
  