From: Yegor Kozlov Date: Tue, 29 Dec 2009 19:47:38 +0000 (+0000) Subject: improved usermodel to prevent data corruption when setting array formulas, mimic... X-Git-Tag: REL_3_7_BETA1~171 X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=58fd7703351834fbe399724d3627681f0ce028fb;p=poi.git improved usermodel to prevent data corruption when setting array formulas, mimic Excel behaviour and block changing cells included in multi-cell arrays git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@894469 13f79535-47bb-0310-9956-ffa450edef68 --- diff --git a/src/java/org/apache/poi/hssf/record/aggregates/FormulaRecordAggregate.java b/src/java/org/apache/poi/hssf/record/aggregates/FormulaRecordAggregate.java index 07dd072ecb..a403d09e2d 100644 --- a/src/java/org/apache/poi/hssf/record/aggregates/FormulaRecordAggregate.java +++ b/src/java/org/apache/poi/hssf/record/aggregates/FormulaRecordAggregate.java @@ -230,7 +230,9 @@ public final class FormulaRecordAggregate extends RecordAggregate implements Cel if (_sharedFormulaRecord != null) { return false; } - return _formulaRecord.getFormula().getExpReference() != null; + CellReference expRef = _formulaRecord.getFormula().getExpReference(); + ArrayRecord arec = expRef == null ? null : _sharedValueManager.getArrayRecord(expRef.getRow(), expRef.getCol()); + return arec != null; } public CellRangeAddress getArrayFormulaRange() { @@ -260,6 +262,8 @@ public final class FormulaRecordAggregate extends RecordAggregate implements Cel */ public CellRangeAddress removeArrayFormula(int rowIndex, int columnIndex) { CellRangeAddress8Bit a = _sharedValueManager.removeArrayFormula(rowIndex, columnIndex); - return new CellRangeAddress(a.getFirstRow(), a.getLastRow(), a.getFirstColumn(), a.getLastColumn()); + // at this point FormulaRecordAggregate#isPartOfArrayFormula() should return false + _formulaRecord.setParsedExpression(null); + return new CellRangeAddress(a.getFirstRow(), a.getLastRow(), a.getFirstColumn(), a.getLastColumn()); } } diff --git a/src/java/org/apache/poi/hssf/usermodel/HSSFCell.java b/src/java/org/apache/poi/hssf/usermodel/HSSFCell.java index a543477136..071f1b4313 100644 --- a/src/java/org/apache/poi/hssf/usermodel/HSSFCell.java +++ b/src/java/org/apache/poi/hssf/usermodel/HSSFCell.java @@ -284,6 +284,9 @@ public class HSSFCell implements Cell { */ public void setCellType(int cellType) { notifyFormulaChanging(); + if(isPartOfArrayFormulaGroup()){ + notifyArrayFormulaChanging(); + } int row=_record.getRow(); short col=_record.getColumn(); short styleIndex=_record.getXFIndex(); @@ -578,6 +581,10 @@ public class HSSFCell implements Cell { } public void setCellFormula(String formula) { + if(isPartOfArrayFormulaGroup()){ + notifyArrayFormulaChanging(); + } + int row=_record.getRow(); short col=_record.getColumn(); short styleIndex=_record.getXFIndex(); @@ -1191,4 +1198,40 @@ public class HSSFCell implements Cell { } return ((FormulaRecordAggregate)_record).isPartOfArrayFormula(); } + + /** + * The purpose of this method is to validate the cell state prior to modification + * + * @see #notifyArrayFormulaChanging() + */ + void notifyArrayFormulaChanging(String msg){ + CellRangeAddress cra = getArrayFormulaRange(); + if(cra.getNumberOfCells() > 1) { + throw new IllegalStateException(msg); + } + //un-register the single-cell array formula from the parent XSSFSheet + getRow().getSheet().removeArrayFormula(this); + } + + /** + * Called when this cell is modified. + *

+ * The purpose of this method is to validate the cell state prior to modification. + *

+ * + * @see #setCellType(int) + * @see #setCellFormula(String) + * @see HSSFRow#removeCell(org.apache.poi.ss.usermodel.Cell) + * @see org.apache.poi.hssf.usermodel.HSSFSheet#removeRow(org.apache.poi.ss.usermodel.Row) + * @see org.apache.poi.hssf.usermodel.HSSFSheet#shiftRows(int, int, int) + * @see org.apache.poi.hssf.usermodel.HSSFSheet#addMergedRegion(org.apache.poi.ss.util.CellRangeAddress) + * @throws IllegalStateException if modification is not allowed + */ + void notifyArrayFormulaChanging(){ + CellReference ref = new CellReference(this); + String msg = "Cell "+ref.formatAsString()+" is part of a multi-cell array formula. " + + "You cannot change part of an array."; + notifyArrayFormulaChanging(msg); + } + } diff --git a/src/java/org/apache/poi/hssf/usermodel/HSSFRow.java b/src/java/org/apache/poi/hssf/usermodel/HSSFRow.java index 53938cf821..3d1c73497b 100644 --- a/src/java/org/apache/poi/hssf/usermodel/HSSFRow.java +++ b/src/java/org/apache/poi/hssf/usermodel/HSSFRow.java @@ -163,6 +163,10 @@ public final class HSSFRow implements Row { if(column >= cells.length || cell != cells[column]) { throw new RuntimeException("Specified cell is not from this row"); } + if(cell.isPartOfArrayFormulaGroup()){ + cell.notifyArrayFormulaChanging(); + } + cells[column]=null; if(alsoRemoveRecords) { diff --git a/src/java/org/apache/poi/hssf/usermodel/HSSFSheet.java b/src/java/org/apache/poi/hssf/usermodel/HSSFSheet.java index 251b02c7fb..75e48cfa0f 100644 --- a/src/java/org/apache/poi/hssf/usermodel/HSSFSheet.java +++ b/src/java/org/apache/poi/hssf/usermodel/HSSFSheet.java @@ -238,6 +238,13 @@ public final class HSSFSheet implements org.apache.poi.ss.usermodel.Sheet { if (row.getSheet() != this) { throw new IllegalArgumentException("Specified row does not belong to this sheet"); } + for(Cell cell : row) { + HSSFCell xcell = (HSSFCell)cell; + if(xcell.isPartOfArrayFormulaGroup()){ + String msg = "Row[rownum="+row.getRowNum()+"] contains cell(s) included in a multi-cell array formula. You cannot change part of an array."; + xcell.notifyArrayFormulaChanging(msg); + } + } if (_rows.size() > 0) { Integer key = Integer.valueOf(row.getRowNum()); @@ -571,12 +578,45 @@ public final class HSSFSheet implements org.apache.poi.ss.usermodel.Sheet { public int addMergedRegion(CellRangeAddress region) { region.validate(SpreadsheetVersion.EXCEL97); + + // throw IllegalStateException if the argument CellRangeAddress intersects with + // a multi-cell array formula defined in this sheet + validateArrayFormulas(region); + return _sheet.addMergedRegion( region.getFirstRow(), region.getFirstColumn(), region.getLastRow(), region.getLastColumn()); } + private void validateArrayFormulas(CellRangeAddress region){ + int firstRow = region.getFirstRow(); + int firstColumn = region.getFirstColumn(); + int lastRow = region.getLastRow(); + int lastColumn = region.getLastColumn(); + for (int rowIn = firstRow; rowIn <= lastRow; rowIn++) { + for (int colIn = firstColumn; colIn <= lastColumn; colIn++) { + HSSFRow row = getRow(rowIn); + if (row == null) continue; + + HSSFCell cell = row.getCell(colIn); + if(cell == null) continue; + + if(cell.isPartOfArrayFormulaGroup()){ + CellRangeAddress arrayRange = cell.getArrayFormulaRange(); + if (arrayRange.getNumberOfCells() > 1 && + ( arrayRange.isInRange(region.getFirstRow(), region.getFirstColumn()) || + arrayRange.isInRange(region.getFirstRow(), region.getFirstColumn())) ){ + String msg = "The range " + region.formatAsString() + " intersects with a multi-cell array formula. " + + "You cannot merge cells of an array."; + throw new IllegalStateException(msg); + } + } + } + } + + } + /** * Whether a record must be inserted or not at generation to indicate that * formula must be recalculated when workbook is opened. @@ -1214,6 +1254,11 @@ public final class HSSFSheet implements org.apache.poi.ss.usermodel.Sheet { for ( int rowNum = s; rowNum >= startRow && rowNum <= endRow && rowNum >= 0 && rowNum < 65536; rowNum += inc ) { HSSFRow row = getRow( rowNum ); + // notify all cells in this row that we are going to shift them, + // it can throw IllegalStateException if the operation is not allowed, for example, + // if the row contains cells included in a multi-cell array formula + if(row != null) notifyRowShifting(row); + HSSFRow row2Replace = getRow( rowNum + n ); if ( row2Replace == null ) row2Replace = createRow( rowNum + n ); @@ -1301,6 +1346,17 @@ public final class HSSFSheet implements org.apache.poi.ss.usermodel.Sheet { _sheet.getRecords().addAll(window2Loc, records); } + private void notifyRowShifting(HSSFRow row){ + String msg = "Row[rownum="+row.getRowNum()+"] contains cell(s) included in a multi-cell array formula. " + + "You cannot change part of an array."; + for(Cell cell : row){ + HSSFCell hcell = (HSSFCell)cell; + if(hcell.isPartOfArrayFormulaGroup()){ + hcell.notifyArrayFormulaChanging(msg); + } + } + } + /** * Creates a split (freezepane). Any existing freezepane or split pane is overwritten. * @param colSplit Horizonatal position of split. diff --git a/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFCell.java b/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFCell.java index f2a4c497b0..9a6be02014 100644 --- a/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFCell.java +++ b/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFCell.java @@ -385,8 +385,13 @@ public final class XSSFCell implements Cell { * @param formula the formula to set, e.g. "SUM(C4:E4)". * If the argument is null then the current formula is removed. * @throws org.apache.poi.ss.formula.FormulaParseException if the formula has incorrect syntax or is otherwise invalid + * @throws IllegalStateException if the operation is not allowed, for example, + * when the cell is a part of a multi-cell array formula */ public void setCellFormula(String formula) { + if(isPartOfArrayFormulaGroup()){ + notifyArrayFormulaChanging(); + } setFormula(formula, FormulaType.CELL); } @@ -694,6 +699,10 @@ public final class XSSFCell implements Cell { * @see #CELL_TYPE_ERROR */ public void setCellType(int cellType) { + if(isPartOfArrayFormulaGroup()){ + notifyArrayFormulaChanging(); + } + int prevType = getCellType(); switch (cellType) { case CELL_TYPE_BLANK: @@ -982,4 +991,41 @@ public final class XSSFCell implements Cell { public boolean isPartOfArrayFormulaGroup() { return getSheet().isCellInArrayFormulaContext(this); } + + /** + * The purpose of this method is to validate the cell state prior to modification + * + * @see #notifyArrayFormulaChanging() + */ + void notifyArrayFormulaChanging(String msg){ + if(isPartOfArrayFormulaGroup()){ + CellRangeAddress cra = getArrayFormulaRange(); + if(cra.getNumberOfCells() > 1) { + throw new IllegalStateException(msg); + } + //un-register the single-cell array formula from the parent XSSFSheet + getRow().getSheet().removeArrayFormula(this); + } + } + + /** + * Called when this cell is modified. + *

+ * The purpose of this method is to validate the cell state prior to modification. + *

+ * + * @see #setCellType(int) + * @see #setCellFormula(String) + * @see XSSFRow#removeCell(org.apache.poi.ss.usermodel.Cell) + * @see org.apache.poi.xssf.usermodel.XSSFSheet#removeRow(org.apache.poi.ss.usermodel.Row) + * @see org.apache.poi.xssf.usermodel.XSSFSheet#shiftRows(int, int, int) + * @see org.apache.poi.xssf.usermodel.XSSFSheet#addMergedRegion(org.apache.poi.ss.util.CellRangeAddress) + * @throws IllegalStateException if modification is not allowed + */ + void notifyArrayFormulaChanging(){ + CellReference ref = new CellReference(this); + String msg = "Cell "+ref.formatAsString()+" is part of a multi-cell array formula. " + + "You cannot change part of an array."; + notifyArrayFormulaChanging(msg); + } } diff --git a/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFRow.java b/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFRow.java index 9e564023e9..61535c5cd3 100644 --- a/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFRow.java +++ b/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFRow.java @@ -361,7 +361,15 @@ public class XSSFRow implements Row, Comparable { * @param cell the cell to remove */ public void removeCell(Cell cell) { - _cells.remove(cell.getColumnIndex()); + if (cell.getRow() != this) { + throw new IllegalArgumentException("Specified cell does not belong to this row"); + } + + XSSFCell xcell = (XSSFCell)cell; + if(xcell.isPartOfArrayFormulaGroup()){ + xcell.notifyArrayFormulaChanging(); + } + _cells.remove(cell.getColumnIndex()); } /** @@ -409,8 +417,13 @@ public class XSSFRow implements Row, Comparable { int rownum = getRowNum() + n; CalculationChain calcChain = _sheet.getWorkbook().getCalculationChain(); int sheetId = (int)_sheet.sheet.getSheetId(); + String msg = "Row[rownum="+getRowNum()+"] contains cell(s) included in a multi-cell array formula. " + + "You cannot change part of an array."; for(Cell c : this){ XSSFCell cell = (XSSFCell)c; + if(cell.isPartOfArrayFormulaGroup()){ + cell.notifyArrayFormulaChanging(msg); + } //remove the reference in the calculation chain if(calcChain != null) calcChain.removeItem(sheetId, cell.getReference()); diff --git a/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java b/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java index 61b7d3fe10..08e5c95ea1 100644 --- a/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java +++ b/src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java @@ -244,18 +244,50 @@ public class XSSFSheet extends POIXMLDocumentPart implements Sheet { /** * Adds a merged region of cells (hence those cells form one). * - * @param cra (rowfrom/colfrom-rowto/colto) to merge + * @param region (rowfrom/colfrom-rowto/colto) to merge * @return index of this region */ - public int addMergedRegion(CellRangeAddress cra) { - cra.validate(SpreadsheetVersion.EXCEL2007); + public int addMergedRegion(CellRangeAddress region) { + region.validate(SpreadsheetVersion.EXCEL2007); + + // throw IllegalStateException if the argument CellRangeAddress intersects with + // a multi-cell array formula defined in this sheet + validateArrayFormulas(region); CTMergeCells ctMergeCells = worksheet.isSetMergeCells() ? worksheet.getMergeCells() : worksheet.addNewMergeCells(); CTMergeCell ctMergeCell = ctMergeCells.addNewMergeCell(); - ctMergeCell.setRef(cra.formatAsString()); + ctMergeCell.setRef(region.formatAsString()); return ctMergeCells.sizeOfMergeCellArray(); } + private void validateArrayFormulas(CellRangeAddress region){ + int firstRow = region.getFirstRow(); + int firstColumn = region.getFirstColumn(); + int lastRow = region.getLastRow(); + int lastColumn = region.getLastColumn(); + for (int rowIn = firstRow; rowIn <= lastRow; rowIn++) { + for (int colIn = firstColumn; colIn <= lastColumn; colIn++) { + XSSFRow row = getRow(rowIn); + if (row == null) continue; + + XSSFCell cell = row.getCell(colIn); + if(cell == null) continue; + + if(cell.isPartOfArrayFormulaGroup()){ + CellRangeAddress arrayRange = cell.getArrayFormulaRange(); + if (arrayRange.getNumberOfCells() > 1 && + ( arrayRange.isInRange(region.getFirstRow(), region.getFirstColumn()) || + arrayRange.isInRange(region.getFirstRow(), region.getFirstColumn())) ){ + String msg = "The range " + region.formatAsString() + " intersects with a multi-cell array formula. " + + "You cannot merge cells of an array."; + throw new IllegalStateException(msg); + } + } + } + } + + } + /** * Adjusts the column width to fit the contents. * @@ -1279,7 +1311,13 @@ public class XSSFSheet extends POIXMLDocumentPart implements Sheet { if (row.getSheet() != this) { throw new IllegalArgumentException("Specified row does not belong to this sheet"); } - + for(Cell cell : row) { + XSSFCell xcell = (XSSFCell)cell; + String msg = "Row[rownum="+row.getRowNum()+"] contains cell(s) included in a multi-cell array formula. You cannot change part of an array."; + if(xcell.isPartOfArrayFormulaGroup()){ + xcell.notifyArrayFormulaChanging(msg); + } + } rows.remove(row.getRowNum()); } diff --git a/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFSheetUpdateArrayFormulas.java b/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFSheetUpdateArrayFormulas.java index b703c48cd0..fc55ffdebc 100644 --- a/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFSheetUpdateArrayFormulas.java +++ b/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFSheetUpdateArrayFormulas.java @@ -19,8 +19,7 @@ package org.apache.poi.xssf.usermodel; import junit.framework.AssertionFailedError; -import org.apache.poi.ss.usermodel.BaseTestSheetUpdateArrayFormulas; -import org.apache.poi.ss.usermodel.CellRange; +import org.apache.poi.ss.usermodel.*; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xssf.XSSFITestDataProvider; import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCell; @@ -106,4 +105,5 @@ public final class TestXSSFSheetUpdateArrayFormulas extends BaseTestSheetUpdateA assertEquals(STCellFormulaType.ARRAY, f.getT()); } } + } diff --git a/src/testcases/org/apache/poi/hssf/record/aggregates/TestFormulaRecordAggregate.java b/src/testcases/org/apache/poi/hssf/record/aggregates/TestFormulaRecordAggregate.java index b5b9724c6b..be785b4fb9 100644 --- a/src/testcases/org/apache/poi/hssf/record/aggregates/TestFormulaRecordAggregate.java +++ b/src/testcases/org/apache/poi/hssf/record/aggregates/TestFormulaRecordAggregate.java @@ -100,5 +100,8 @@ public final class TestFormulaRecordAggregate extends TestCase { Ptg[] ptg = agg.getFormulaTokens(); String fmlaSer = FormulaRenderer.toFormulaString(null, ptg); assertEquals(formula, fmlaSer); - } + + agg.removeArrayFormula(rownum, colnum); + assertFalse(agg.isPartOfArrayFormula()); + } } diff --git a/src/testcases/org/apache/poi/hssf/usermodel/TestHSSFSheetUpdateArrayFormulas.java b/src/testcases/org/apache/poi/hssf/usermodel/TestHSSFSheetUpdateArrayFormulas.java index eff7157eb6..6f3cdad920 100644 --- a/src/testcases/org/apache/poi/hssf/usermodel/TestHSSFSheetUpdateArrayFormulas.java +++ b/src/testcases/org/apache/poi/hssf/usermodel/TestHSSFSheetUpdateArrayFormulas.java @@ -27,8 +27,7 @@ import org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate; import org.apache.poi.hssf.record.aggregates.RowRecordsAggregate; import org.apache.poi.hssf.record.aggregates.SharedValueManager; import org.apache.poi.hssf.record.aggregates.TestSharedValueManager; -import org.apache.poi.ss.usermodel.BaseTestSheetUpdateArrayFormulas; -import org.apache.poi.ss.usermodel.CellRange; +import org.apache.poi.ss.usermodel.*; import org.apache.poi.ss.util.CellRangeAddress; /** diff --git a/src/testcases/org/apache/poi/ss/usermodel/BaseTestSheetUpdateArrayFormulas.java b/src/testcases/org/apache/poi/ss/usermodel/BaseTestSheetUpdateArrayFormulas.java index fdd11fec3a..41779ea9c4 100644 --- a/src/testcases/org/apache/poi/ss/usermodel/BaseTestSheetUpdateArrayFormulas.java +++ b/src/testcases/org/apache/poi/ss/usermodel/BaseTestSheetUpdateArrayFormulas.java @@ -233,4 +233,264 @@ public abstract class BaseTestSheetUpdateArrayFormulas extends TestCase { assertTrue( cell1.isPartOfArrayFormulaGroup()); } } + + /** + * Test that we can set pre-calculated formula result for array formulas + */ + public void testModifyArrayCells_setFormulaResult(){ + Workbook workbook = _testDataProvider.createWorkbook(); + Sheet sheet = workbook.createSheet(); + + //single-cell array formula + CellRange srange = + sheet.setArrayFormula("SUM(A4:A6,B4:B6)", CellRangeAddress.valueOf("B5")); + Cell scell = srange.getTopLeftCell(); + assertEquals(Cell.CELL_TYPE_FORMULA, scell.getCellType()); + assertEquals(0.0, scell.getNumericCellValue()); + scell.setCellValue(1.1); + assertEquals(1.1, scell.getNumericCellValue()); + + //multi-cell array formula + CellRange mrange = + sheet.setArrayFormula("A1:A3*B1:B3", CellRangeAddress.valueOf("C1:C3")); + for(Cell mcell : mrange){ + assertEquals(Cell.CELL_TYPE_FORMULA, mcell.getCellType()); + assertEquals(0.0, mcell.getNumericCellValue()); + double fmlaResult = 1.2; + mcell.setCellValue(fmlaResult); + assertEquals(fmlaResult, mcell.getNumericCellValue()); + } + } + + public void testModifyArrayCells_setCellType(){ + Workbook workbook = _testDataProvider.createWorkbook(); + Sheet sheet = workbook.createSheet(); + + // single-cell array formulas behave just like normal cells - + // changing cell type removes the array formula and associated cached result + CellRange srange = + sheet.setArrayFormula("SUM(A4:A6,B4:B6)", CellRangeAddress.valueOf("B5")); + Cell scell = srange.getTopLeftCell(); + assertEquals(Cell.CELL_TYPE_FORMULA, scell.getCellType()); + assertEquals(0.0, scell.getNumericCellValue()); + scell.setCellType(Cell.CELL_TYPE_STRING); + assertEquals(Cell.CELL_TYPE_STRING, scell.getCellType()); + scell.setCellValue("string cell"); + assertEquals("string cell", scell.getStringCellValue()); + + //once you create a multi-cell array formula, you cannot change the type of its cells + CellRange mrange = + sheet.setArrayFormula("A1:A3*B1:B3", CellRangeAddress.valueOf("C1:C3")); + for(Cell mcell : mrange){ + try { + assertEquals(Cell.CELL_TYPE_FORMULA, mcell.getCellType()); + mcell.setCellType(Cell.CELL_TYPE_NUMERIC); + fail("expected exception"); + } catch (IllegalStateException e){ + CellReference ref = new CellReference(mcell); + String msg = "Cell "+ref.formatAsString()+" is part of a multi-cell array formula. You cannot change part of an array."; + assertEquals(msg, e.getMessage()); + } + // a failed invocation of Cell.setCellType leaves the cell + // in the state that it was in prior to the invocation + assertEquals(Cell.CELL_TYPE_FORMULA, mcell.getCellType()); + assertTrue(mcell.isPartOfArrayFormulaGroup()); + } + } + + public void testModifyArrayCells_setCellFormula(){ + Workbook workbook = _testDataProvider.createWorkbook(); + Sheet sheet = workbook.createSheet(); + + CellRange srange = + sheet.setArrayFormula("SUM(A4:A6,B4:B6)", CellRangeAddress.valueOf("B5")); + Cell scell = srange.getTopLeftCell(); + assertEquals("SUM(A4:A6,B4:B6)", scell.getCellFormula()); + assertEquals(Cell.CELL_TYPE_FORMULA, scell.getCellType()); + assertTrue(scell.isPartOfArrayFormulaGroup()); + scell.setCellFormula("SUM(A4,A6)"); + //we are now a normal formula cell + assertEquals("SUM(A4,A6)", scell.getCellFormula()); + assertFalse(scell.isPartOfArrayFormulaGroup()); + assertEquals(Cell.CELL_TYPE_FORMULA, scell.getCellType()); + //check that setting formula result works + assertEquals(0.0, scell.getNumericCellValue()); + scell.setCellValue(33.0); + assertEquals(33.0, scell.getNumericCellValue()); + + //multi-cell array formula + CellRange mrange = + sheet.setArrayFormula("A1:A3*B1:B3", CellRangeAddress.valueOf("C1:C3")); + for(Cell mcell : mrange){ + //we cannot set individual formulas for cells included in an array formula + try { + assertEquals("A1:A3*B1:B3", mcell.getCellFormula()); + mcell.setCellFormula("A1+A2"); + fail("expected exception"); + } catch (IllegalStateException e){ + CellReference ref = new CellReference(mcell); + String msg = "Cell "+ref.formatAsString()+" is part of a multi-cell array formula. You cannot change part of an array."; + assertEquals(msg, e.getMessage()); + } + // a failed invocation of Cell.setCellFormula leaves the cell + // in the state that it was in prior to the invocation + assertEquals("A1:A3*B1:B3", mcell.getCellFormula()); + assertTrue(mcell.isPartOfArrayFormulaGroup()); + } + } + + public void testModifyArrayCells_removeCell(){ + Workbook workbook = _testDataProvider.createWorkbook(); + Sheet sheet = workbook.createSheet(); + + //single-cell array formulas behave just like normal cells + CellRangeAddress cra = CellRangeAddress.valueOf("B5"); + CellRange srange = + sheet.setArrayFormula("SUM(A4:A6,B4:B6)", cra); + Cell scell = srange.getTopLeftCell(); + + Row srow = sheet.getRow(cra.getFirstRow()); + assertSame(srow, scell.getRow()); + srow.removeCell(scell); + assertNull(srow.getCell(cra.getFirstColumn())); + + //re-create the removed cell + scell = srow.createCell(cra.getFirstColumn()); + assertEquals(Cell.CELL_TYPE_BLANK, scell.getCellType()); + assertFalse(scell.isPartOfArrayFormulaGroup()); + + //we cannot remove cells included in a multi-cell array formula + CellRange mrange = + sheet.setArrayFormula("A1:A3*B1:B3", CellRangeAddress.valueOf("C1:C3")); + for(Cell mcell : mrange){ + int columnIndex = mcell.getColumnIndex(); + Row mrow = mcell.getRow(); + try { + mrow.removeCell(mcell); + fail("expected exception"); + } catch (IllegalStateException e){ + CellReference ref = new CellReference(mcell); + String msg = "Cell "+ref.formatAsString()+" is part of a multi-cell array formula. You cannot change part of an array."; + assertEquals(msg, e.getMessage()); + } + // a failed invocation of Row.removeCell leaves the row + // in the state that it was in prior to the invocation + assertSame(mcell, mrow.getCell(columnIndex)); + assertTrue(mcell.isPartOfArrayFormulaGroup()); + assertEquals(Cell.CELL_TYPE_FORMULA, mcell.getCellType()); + } + } + + public void testModifyArrayCells_removeRow(){ + Workbook workbook = _testDataProvider.createWorkbook(); + Sheet sheet = workbook.createSheet(); + + //single-cell array formulas behave just like normal cells + CellRangeAddress cra = CellRangeAddress.valueOf("B5"); + CellRange srange = + sheet.setArrayFormula("SUM(A4:A6,B4:B6)", cra); + Cell scell = srange.getTopLeftCell(); + assertEquals(Cell.CELL_TYPE_FORMULA, scell.getCellType()); + + Row srow = scell.getRow(); + assertSame(srow, sheet.getRow(cra.getFirstRow())); + sheet.removeRow(srow); + assertNull(sheet.getRow(cra.getFirstRow())); + + //re-create the removed row and cell + scell = sheet.createRow(cra.getFirstRow()).createCell(cra.getFirstColumn()); + assertEquals(Cell.CELL_TYPE_BLANK, scell.getCellType()); + assertFalse(scell.isPartOfArrayFormulaGroup()); + + //we cannot remove rows with cells included in a multi-cell array formula + CellRange mrange = + sheet.setArrayFormula("A1:A3*B1:B3", CellRangeAddress.valueOf("C1:C3")); + for(Cell mcell : mrange){ + int columnIndex = mcell.getColumnIndex(); + Row mrow = mcell.getRow(); + try { + sheet.removeRow(mrow); + fail("expected exception"); + } catch (IllegalStateException e){ + String msg = "Row[rownum="+mrow.getRowNum()+"] contains cell(s) included in a multi-cell array formula. You cannot change part of an array."; + assertEquals(msg, e.getMessage()); + } + // a failed invocation of Row.removeCell leaves the row + // in the state that it was in prior to the invocation + assertSame(mrow, sheet.getRow(mrow.getRowNum())); + assertSame(mcell, mrow.getCell(columnIndex)); + assertTrue(mcell.isPartOfArrayFormulaGroup()); + assertEquals(Cell.CELL_TYPE_FORMULA, mcell.getCellType()); + } + } + + public void testModifyArrayCells_mergeCells(){ + Workbook workbook = _testDataProvider.createWorkbook(); + Sheet sheet = workbook.createSheet(); + assertEquals(0, sheet.getNumMergedRegions()); + + //single-cell array formulas behave just like normal cells + CellRange srange = + sheet.setArrayFormula("SUM(A4:A6,B4:B6)", CellRangeAddress.valueOf("B5")); + Cell scell = srange.getTopLeftCell(); + sheet.addMergedRegion(CellRangeAddress.valueOf("B5:C6")); + //we are still an array formula + assertEquals(Cell.CELL_TYPE_FORMULA, scell.getCellType()); + assertTrue(scell.isPartOfArrayFormulaGroup()); + assertEquals(1, sheet.getNumMergedRegions()); + + //we cannot merge cells included in an array formula + CellRange mrange = + sheet.setArrayFormula("A1:A3*B1:B3", CellRangeAddress.valueOf("C1:C3")); + CellRangeAddress cra = CellRangeAddress.valueOf("C1:C3"); + try { + sheet.addMergedRegion(cra); + fail("expected exception"); + } catch (IllegalStateException e){ + String msg = "The range "+cra.formatAsString()+" intersects with a multi-cell array formula. You cannot merge cells of an array."; + assertEquals(msg, e.getMessage()); + } + //the number of merged regions remains the same + assertEquals(1, sheet.getNumMergedRegions()); + } + + public void testModifyArrayCells_shiftRows(){ + Workbook workbook = _testDataProvider.createWorkbook(); + Sheet sheet = workbook.createSheet(); + + //single-cell array formulas behave just like normal cells - we can change the cell type + CellRange srange = + sheet.setArrayFormula("SUM(A4:A6,B4:B6)", CellRangeAddress.valueOf("B5")); + Cell scell = srange.getTopLeftCell(); + assertEquals("SUM(A4:A6,B4:B6)", scell.getCellFormula()); + sheet.shiftRows(0, 0, 1); + sheet.shiftRows(0, 1, 1); + + //we cannot set individual formulas for cells included in an array formula + CellRange mrange = + sheet.setArrayFormula("A1:A3*B1:B3", CellRangeAddress.valueOf("C1:C3")); + + try { + sheet.shiftRows(0, 0, 1); + fail("expected exception"); + } catch (IllegalStateException e){ + String msg = "Row[rownum=0] contains cell(s) included in a multi-cell array formula. You cannot change part of an array."; + assertEquals(msg, e.getMessage()); + } + /* + TODO: enable shifting the whole array + + sheet.shiftRows(0, 2, 1); + //the array C1:C3 is now C2:C4 + CellRangeAddress cra = CellRangeAddress.valueOf("C2:C4"); + for(Cell mcell : mrange){ + //TODO define equals and hashcode for CellRangeAddress + assertEquals(cra.formatAsString(), mcell.getArrayFormulaRange().formatAsString()); + assertEquals("A2:A4*B2:B4", mcell.getCellFormula()); + assertTrue(mcell.isPartOfArrayFormulaGroup()); + assertEquals(Cell.CELL_TYPE_FORMULA, mcell.getCellType()); + } + + */ + } }