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.time.Timeval;
  
  import java.util.List;
  
  public class ItemFuncUnixTimestamp extends ItemTimevalFunc {
  
      public ItemFuncUnixTimestamp(List<Item> args, int charsetIndex) {
          super(args, charsetIndex);
      }
  
      @Override
      public final String funcName() {
          return "unix_timestamp";
      }
  
      public void fixLengthAndDec() {
          fixLengthAndDecAndCharsetDatetime(11, getArgCount() == 0 ? 0 : args.get(0).datetimePrecision());
      }
  
      @Override
      public boolean valTimeval(Timeval tm) {
          if (getArgCount() == 0) {
              tm.setTvSec(java.util.Calendar.getInstance().getTimeInMillis() / 1000);
              tm.setTvUsec(0);
              return false; // no args: null_value is set in constructor and is
              // always 0.
          }
          return (nullValue = args.get(0).getTimeval(tm));
      }
  
      @Override
      public ItemFunc nativeConstruct(List<Item> realArgs) {
          return new ItemFuncUnixTimestamp(realArgs, charsetIndex);
      }
  }
  