Examples of org.apache.poi.hssf.record.formula.eval.EvaluationException

Package org.apache.poi.hssf.record.formula.eval

Examples of org.apache.poi.hssf.record.formula.eval.EvaluationException

org.apache.poi.hssf.record.formula.eval.EvaluationException
Eval arg0 = args[0]; if(arg0 instanceof ErrorEval) { return arg0; } if(!(arg0 instanceof AreaEval)) { return ErrorEval.VALUE_INVALID; } double temp = 0; AreaEval area = (AreaEval)arg0; ValueEval[] values = area.getValues(); for (int i = 0; i < values.length; i++) { ValueEval ve = values[i]; if(ve instanceof ErrorEval) { return ve; } if(!(ve instanceof NumericValueEval)) { return ErrorEval.VALUE_INVALID; } temp += ((NumericValueEval)ve).getNumberValue(); } // ... } In this example, if any error is encountered while processing the arguments, an error is returned immediately. This code is difficult to refactor due to all the points where errors are returned.
Using EvaluationException allows the error returning code to be consolidated to one place.
```
 public Eval evaluate(Eval[] args, int srcRow, short srcCol) { try { // ... AreaEval area = getAreaArg(args[0]); double temp = sumValues(area.getValues()); // ... } catch (EvaluationException e) { return e.getErrorEval(); } } private static AreaEval getAreaArg(Eval arg0) throws EvaluationException { if (arg0 instanceof ErrorEval) { throw new EvaluationException((ErrorEval) arg0); } if (arg0 instanceof AreaEval) { return (AreaEval) arg0; } throw EvaluationException.invalidValue(); } private double sumValues(ValueEval[] values) throws EvaluationException { double temp = 0; for (int i = 0; i < values.length; i++) { ValueEval ve = values[i]; if (ve instanceof ErrorEval) { throw new EvaluationException((ErrorEval) ve); } if (!(ve instanceof NumericValueEval)) { throw EvaluationException.invalidValue(); } temp += ((NumericValueEval) ve).getNumberValue(); } return temp; } 
```
It is not mandatory to use EvaluationException, doing so might give the following advantages:
- Methods can more easily be extracted, allowing for re-use.
- Type management (typecasting etc) is simpler because error conditions have been separated from intermediate calculation values.
- Fewer local variables are required. Local variables can have stronger types.
- It is easier to mimic common Excel error handling behaviour (exit upon encountering first error), because exceptions conveniently propagate up the call stack regardless of execution points or the number of levels of nested calls.
Note - Only standard evaluation errors are represented by EvaluationException ( i.e. conditions expected to be encountered when evaluating arbitrary Excel formulas). Conditions that could never occur in an Excel spreadsheet should result in runtime exceptions. Care should be taken to not translate any POI internal error into an Excel evaluation error code. @author Josh Micich

  private static double evaluateMatchTypeArg(Eval arg, int srcCellRow, short srcCellCol) 
      throws EvaluationException {
    Eval match_type = OperandResolver.getSingleValue(arg, srcCellRow, srcCellCol);


    if(match_type instanceof ErrorEval) {
      throw new EvaluationException((ErrorEval)match_type);
    }
    if(match_type instanceof NumericValueEval) {
      NumericValueEval ne = (NumericValueEval) match_type;
      return ne.getNumberValue();
    }
    if (match_type instanceof StringEval) {
      StringEval se = (StringEval) match_type;
      Double d = OperandResolver.parseDouble(se.getStringValue());
      if(d == null) {
        // plain string
        throw new EvaluationException(ErrorEval.VALUE_INVALID);
      }
      // if the string parses as a number, it is OK
      return d.doubleValue();
    }
    throw new RuntimeException("Unexpected match_type type (" + match_type.getClass().getName() + ")");

View Full Code Here

      for (int i = 0; i < lookupRange.length; i++) {
        if(lookupComparer.compareTo(lookupRange[i]).isEqual()) {
          return i;
        }
      }
      throw new EvaluationException(ErrorEval.NA);
    }
    
    if(findLargestLessThanOrEqual) {
      // Note - backward iteration
      for (int i = lookupRange.length - 1; i>=0;  i--) {
        CompareResult cmp = lookupComparer.compareTo(lookupRange[i]);
        if(cmp.isTypeMismatch()) {
          continue;
        }
        if(!cmp.isLessThan()) {
          return i;
        }
      }
      throw new EvaluationException(ErrorEval.NA);
    }
    
    // else - find smallest greater than or equal to
    // TODO - is binary search used for (match_type==+1) ?
    for (int i = 0; i<lookupRange.length; i++) {
      CompareResult cmp = lookupComparer.compareTo(lookupRange[i]);
      if(cmp.isEqual()) {
        return i;
      }
      if(cmp.isGreaterThan()) {
        if(i<1) {
          throw new EvaluationException(ErrorEval.NA);
        }
        return i-1;
      }
    }


    throw new EvaluationException(ErrorEval.NA);
  }

View Full Code Here

  }


  private double evalArg(Eval arg, int srcRow, short srcCol) throws EvaluationException {
    ValueEval ve = singleOperandEvaluate(arg, srcRow, srcCol);
    if(ve instanceof ErrorEval) {
      throw new EvaluationException((ErrorEval) ve);
    }
    if (ve instanceof NumericValueEval) {
      return ((NumericValueEval) ve).getNumberValue();
    }
    throw new EvaluationException(ErrorEval.VALUE_INVALID); 
  }

View Full Code Here

      
      // check for errors first: size mismatch, value errors in x, value errors in y
      
      int nArrayItems = xops.length;
    if(nArrayItems != yops.length) {
        throw new EvaluationException(ErrorEval.NA);
      }
    for (int i = 0; i < xops.length; i++) {
      Eval eval = xops[i];
      if (eval instanceof ErrorEval) {
        throw new EvaluationException((ErrorEval) eval);
      }
    }
    for (int i = 0; i < yops.length; i++) {
      Eval eval = yops[i];
      if (eval instanceof ErrorEval) {
        throw new EvaluationException((ErrorEval) eval);
      }
    }
    
        double[] xResult = new double[nArrayItems];
        double[] yResult = new double[nArrayItems];
      
        int count = 0;
        
    for (int i=0, iSize=nArrayItems; i<iSize; i++) {
        Eval xEval = xops[i];
        Eval yEval = yops[i];
        
        if (isNumberEval(xEval) && isNumberEval(yEval)) {
          xResult[count] = getDoubleValue(xEval);
          yResult[count] = getDoubleValue(yEval);
            if (Double.isNaN(xResult[count]) || Double.isNaN(xResult[count])) {
                throw new EvaluationException(ErrorEval.NUM_ERROR);
            }
            count++;
        }
    }

View Full Code Here

    }
    
    private static double[][] getValues(Eval argX, Eval argY) throws EvaluationException {
      
      if (argX instanceof ErrorEval) {
      throw new EvaluationException((ErrorEval) argX);
    }
      if (argY instanceof ErrorEval) {
      throw new EvaluationException((ErrorEval) argY);
    }
      
        Eval[] xEvals;
    Eval[] yEvals;
    if (argX instanceof AreaEval) {

View Full Code Here

      result = performBinarySearch(vector, lookupComparer);
    } else {
      result = lookupIndexOfExactValue(lookupComparer, vector);
    }
    if(result < 0) {
      throw new EvaluationException(ErrorEval.NA);
    }
    return result;
  }

View Full Code Here


  public static LookupValueComparer createLookupComparer(ValueEval lookupValue) throws EvaluationException {
    
    if (lookupValue instanceof BlankEval) {
      // blank eval can never be found in a lookup array 
      throw new EvaluationException(ErrorEval.NA);
    }
    if (lookupValue instanceof StringEval) {
      return new StringLookupComparer((StringEval) lookupValue);
    }
    if (lookupValue instanceof NumberEval) {

View Full Code Here

      return ((AreaEval) eval).offset(0, aeRange.getHeight()-1, 0, aeRange.getWidth()-1);
    }
    if (eval instanceof RefEval) {
      return ((RefEval)eval).offset(0, aeRange.getHeight()-1, 0, aeRange.getWidth()-1);
    }
    throw new EvaluationException(ErrorEval.VALUE_INVALID);
  }

View Full Code Here

      return (AreaEval) eval;
    }
    if (eval instanceof RefEval) {
      return ((RefEval)eval).offset(0, 0, 0, 0);
    }
    throw new EvaluationException(ErrorEval.VALUE_INVALID);
  }

View Full Code Here

          rowIx = pRowIx == -1 ? 0 : pRowIx;
          columnIx = pColumnIx;
        }
      }
      if (rowIx < -1 || columnIx < -1) {
        throw new EvaluationException(ErrorEval.VALUE_INVALID);
      }
    } else if (ae.isColumn()) {
      if (nArgs == 2) {
        rowIx = pRowIx;
        columnIx = 0;
      } else {
        rowIx = pRowIx;
        columnIx = pColumnIx == -1 ? 0 : pColumnIx;
      }
      if (rowIx < -1 || columnIx < -1) {
        throw new EvaluationException(ErrorEval.VALUE_INVALID);
      }
    } else {
      if (nArgs == 2) {
        // always an error with 2-D area refs
        if (pRowIx < -1) {
          throw new EvaluationException(ErrorEval.VALUE_INVALID);
        }
        throw new EvaluationException(ErrorEval.REF_INVALID);
      }
      // Normal case - area ref is 2-D, and both index args were provided
      rowIx = pRowIx;
      columnIx = pColumnIx;
    }
    
    int width = ae.getWidth();
    int height = ae.getHeight();
    // Slightly irregular logic for bounds checking errors
    if (rowIx >= height || columnIx >= width) {
      throw new EvaluationException(ErrorEval.REF_INVALID);
    }
    if (rowIx < 0 || columnIx < 0) {
      throw new EvaluationException(ErrorEval.VALUE_INVALID);
    }
    return ae.getRelativeValue(rowIx, columnIx);
  }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.apache.poi.hssf.record.formula.eval.EvaluationException

org.apache.poi.hssf.record.formula.atp.YearFrac

org.apache.poi.hssf.record.formula.atp.YearFracCalculator

org.apache.poi.hssf.record.formula.functions.BooleanFunction

org.apache.poi.hssf.record.formula.functions.DateFunc

org.apache.poi.hssf.record.formula.functions.Index

org.apache.poi.hssf.record.formula.functions.LookupUtils

org.apache.poi.hssf.record.formula.functions.Match

org.apache.poi.hssf.record.formula.functions.Mode

org.apache.poi.hssf.record.formula.functions.MultiOperandNumericFunction

org.apache.poi.hssf.record.formula.functions.NumericFunction

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.