SXSSFFormulaEvaluator (POI API Documentation)

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org.apache.poi.xssf.streaming
Class SXSSFFormulaEvaluator

java.lang.Object
  org.apache.poi.xssf.usermodel.BaseXSSFFormulaEvaluator
      org.apache.poi.xssf.streaming.SXSSFFormulaEvaluator

All Implemented Interfaces:: WorkbookEvaluatorProvider, FormulaEvaluator

public final class SXSSFFormulaEvaluator
extends BaseXSSFFormulaEvaluator
extends BaseXSSFFormulaEvaluator

Streaming-specific Formula Evaluator, which is able to lookup cells within the current Window.

Nested Class Summary
`static class`	`SXSSFFormulaEvaluator.RowFlushedException`
`static class`	`SXSSFFormulaEvaluator.SheetsFlushedException`

Constructor Summary
`SXSSFFormulaEvaluator(SXSSFWorkbook workbook)`

Method Summary
`static SXSSFFormulaEvaluator`	`create(SXSSFWorkbook workbook, IStabilityClassifier stabilityClassifier, UDFFinder udfFinder)`
`void`	`evaluateAll()` Loops over rows and cells, evaluating formula cells there.
`static void`	`evaluateAllFormulaCells(SXSSFWorkbook wb, boolean skipOutOfWindow)` For active worksheets only, will loop over rows and cells, evaluating formula cells there.
`SXSSFCell`	`evaluateInCell(Cell cell)` If cell contains formula, it evaluates the formula, and puts the formula result back into the cell, in place of the old formula.
`protected EvaluationCell`	`toEvaluationCell(Cell cell)` Turns a SXSSFCell into a SXSSFEvaluationCell

Methods inherited from class org.apache.poi.xssf.usermodel.BaseXSSFFormulaEvaluator
`_getWorkbookEvaluator, clearAllCachedResultValues, doEvaluateInCell, evaluate, evaluateFormulaCell, notifyDeleteCell, notifySetFormula, notifyUpdateCell, setDebugEvaluationOutputForNextEval, setIgnoreMissingWorkbooks, setupReferencedWorkbooks`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

SXSSFFormulaEvaluator

public SXSSFFormulaEvaluator(SXSSFWorkbook workbook)

Method Detail

create

public static SXSSFFormulaEvaluator create(SXSSFWorkbook workbook,
                                           IStabilityClassifier stabilityClassifier,
                                           UDFFinder udfFinder)

Parameters:: stabilityClassifier - used to optimise caching performance. Pass null for the (conservative) assumption that any cell may have its definition changed after evaluation begins.; udfFinder - pass null for default (AnalysisToolPak only)

toEvaluationCell

protected EvaluationCell toEvaluationCell(Cell cell)

Turns a SXSSFCell into a SXSSFEvaluationCell

Specified by:: toEvaluationCell in class BaseXSSFFormulaEvaluator

evaluateInCell

public SXSSFCell evaluateInCell(Cell cell)

If cell contains formula, it evaluates the formula, and puts the formula result back into the cell, in place of the old formula. Else if cell does not contain formula, this method leaves the cell unchanged. Note that the same instance of SXSSFCell is returned to allow chained calls like:

 int evaluatedCellType = evaluator.evaluateInCell(cell).getCellType();

Be aware that your cell value will be changed to hold the result of the formula. If you simply want the formula value computed for you, use BaseXSSFFormulaEvaluator.evaluateFormulaCell(org.apache.poi.ss.usermodel.Cell) }

evaluateAllFormulaCells

public static void evaluateAllFormulaCells(SXSSFWorkbook wb,
                                           boolean skipOutOfWindow)

For active worksheets only, will loop over rows and cells, evaluating formula cells there. If formula cells are outside the window for that sheet, it can either skip them silently, or give an exception

evaluateAll

public void evaluateAll()

Loops over rows and cells, evaluating formula cells there. If any sheets are inactive, or any cells outside of the window, will give an Exception. For SXSSF, you generally don't want to use this method, instead evaluate your formulas as you go before they leave the window.