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;
  
  import com.actiontech.dble.plan.common.field.Field;
  import com.actiontech.dble.plan.common.time.MySQLTime;
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.expr.SQLCharExpr;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.util.List;
  
  public class ItemString extends ItemBasicConstant {
      private String value;
  
      public ItemString(String value, int charsetIndex) {
          this.charsetIndex = charsetIndex;
          this.value = value;
          maxLength = value.length();
          fixed = true;
          decimals = NOT_FIXED_DEC;
      }
  
      @Override
      public ItemType type() {
          return ItemType.STRING_ITEM;
      }
  
      @Override
      public BigDecimal valReal() {
          BigDecimal decValue = BigDecimal.ZERO;
          try {
              decValue = new BigDecimal(value);
          } catch (Exception e) {
              LOGGER.info("convert string to decimal exception!", e);
          }
          return decValue;
      }
  
      @Override
      public BigInteger valInt() {
          BigInteger intValue = BigInteger.ZERO;
          try {
              return new BigInteger(value);
          } catch (Exception e) {
              if (e instanceof NumberFormatException) {
                  try {
                      return new BigInteger(value.getBytes());
                  } catch (Exception e2) {
                      LOGGER.info("convert string to int exception!", e);
                  }
              } else {
                  LOGGER.info("convert string to int exception!", e);
              }
          }
          return intValue;
      }
  
      @Override
      public String valStr() {
          return value;
      }
  
      @Override
      public BigDecimal valDecimal() {
          return valDecimalFromString();
      }
  
      @Override
      public boolean getDate(MySQLTime ltime, long fuzzydate) {
          return getDateFromString(ltime, fuzzydate);
      }
  
      @Override
      public boolean getTime(MySQLTime ltime) {
          return getTimeFromString(ltime);
      }
  
      @Override
      public ItemResult resultType() {
          return ItemResult.STRING_RESULT;
      }
  
      @Override
      public FieldTypes fieldType() {
          return FieldTypes.MYSQL_TYPE_VARCHAR;
      }
  
      @Override
      public int hashCode() {
          if (value == null)
              return 0;
          else
              return value.hashCode();
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj)
              return true;
          if (obj == null)
              return false;
          if (!(obj instanceof ItemString))
              return false;
          ItemString other = (ItemString) obj;
          if (value == null || other.value == null)
              return value == null && other.value == null;
          else
              return value.equals(other.value);
      }
  
      @Override
      public SQLExpr toExpression() {
          return new SQLCharExpr(value); //LiteralString(null, value, false);
      }
  
      @Override
      protected Item cloneStruct(boolean forCalculate, List<Item> calArgs, boolean isPushDown, List<Field> fields) {
          return new ItemString(value, charsetIndex);
      }
  
  }
  