Interface IDataRowExpressionEvaluator

    • Method Summary

      All Methods Instance Methods Abstract Methods Deprecated Methods 
      Modifier and Type Method Description
      void close()
      Closes the underlying resultset.
      java.lang.Object evaluate​(java.lang.String expression)
      Evaluates the expression based on the current row
      java.lang.Object evaluateGlobal​(java.lang.String expression)
      Deprecated.
      Not used anymore.
      boolean first()
      Moves to the first row.
      boolean next()
      Moves to the next row.
    • Method Detail

      • evaluate

        java.lang.Object evaluate​(java.lang.String expression)
        Evaluates the expression based on the current row
        Parameters:
        A - String expression
        Returns:
        An Object representing the evaluated expression. The Object must be of a type String, Number, Date, Calendar, or it will be evaluated as a String using toString(). If there is any BirtException being caught by evaluation, the return value will be the caught BirtException.
      • evaluateGlobal

        @Deprecated
        java.lang.Object evaluateGlobal​(java.lang.String expression)
        Deprecated.
        Not used anymore. use evaluate(String) instead.
        Evaluates the global expressions which are not associated with the data rows.
        Parameters:
        A - String expression
        Returns:
        An Object representing the evaluated expression. The Object must be of a type String, Number, Date, Calendar, or it will be evaluated as a String using toString().
      • first

        boolean first()
        Moves to the first row. Optional if already positioned on the first row when passed to Generator.bindData()
        Returns:
        true if the cursor is on a valid row; false if there are no rows in the result set
      • next

        boolean next()
        Moves to the next row.
        Returns:
        False if the last row has been reached. True otherwise.
      • close

        void close()
        Closes the underlying resultset. This is optional (it can be a no-op if the close is handled externally or not needed).