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  1. Calcite
  2. CALCITE-4482

"ImmutableBeans.create" has performance issue

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 1.27.0
    • None

    Description

      We are doing the stressing test, and we found SqlNode#toString's time is unusually high, seems the call is all from SqlNode#toString, we can reduce the useless call of "ImmutableBeans.create" to reduce the time:

      My proposal is to extra default SqlWriterConfig to SqlNode and SqlNode#toString use this static field.

       

        public static final SqlWriterConfig DEFAULT_SQL_WRITER_CONFIG =
            SqlPrettyWriter.config().withDialect(AnsiSqlDialect.DEFAULT)
                .withAlwaysUseParentheses(false)
                .withSelectListItemsOnSeparateLines(false)
                .withUpdateSetListNewline(false)
                .withIndentation(0);
      
      

       
       

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              Aron.tao Jiatao Tao
              Aron.tao Jiatao Tao
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