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.mathsfunc;
  
  import com.actiontech.dble.plan.common.item.Item;
  import com.actiontech.dble.plan.common.item.function.ItemFunc;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.math.RoundingMode;
  import java.util.List;
  
  
  public class ItemFuncCeiling extends ItemFuncIntVal {
  
      public ItemFuncCeiling(List<Item> args, int charsetIndex) {
          super(args, charsetIndex);
      }
  
      @Override
      public final String funcName() {
          return "ceiling";
      }
  
      @Override
      public BigInteger intOp() {
          BigInteger result;
          Item.ItemResult i = args.get(0).resultType();
          if (i == Item.ItemResult.INT_RESULT) {
              result = args.get(0).valInt();
              nullValue = args.get(0).isNullValue();
  
          } else if (i == Item.ItemResult.DECIMAL_RESULT) {
              BigDecimal dec = decimalOp();
              if (dec == null)
                  result = BigInteger.ZERO;
              else
                  result = dec.toBigInteger();
          } else {
              result = realOp().toBigInteger();
          }
          return result;
      }
  
      @Override
      public BigDecimal realOp() {
          double value = args.get(0).valReal().doubleValue();
          nullValue = args.get(0).isNullValue();
          return new BigDecimal(Math.ceil(value));
      }
  
      @Override
      public BigDecimal decimalOp() {
          BigDecimal bd = args.get(0).valDecimal();
          if (nullValue = args.get(0).isNullValue())
              return BigDecimal.ZERO;
          return bd.setScale(0, RoundingMode.CEILING);
      }
  
      @Override
      public ItemFunc nativeConstruct(List<Item> realArgs) {
          return new ItemFuncCeiling(realArgs, charsetIndex);
      }
  }
  