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Fix for bug 46053 - fixed evaluation cache dependency analysis when changing blank cells 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@706772 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Josh Micich 2008-10-21 21:25:50 +00:00
parent 56fb91e62a
commit 50b9bb8d01
6 changed files with 124 additions and 17 deletions
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2
src/documentation/content/xdocs/changes.xml
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@ -37,7 +37,7 @@
<!-- Don't forget to update status.xml too! -->
<release version="3.5-beta4" date="2008-??-??">
<action dev="POI-DEVELOPERS" type="fix">YK: remove me. required to keep Forrest DTD compiler quiet</action>
<action dev="POI-DEVELOPERS" type="fix">46053 - fixed evaluation cache dependency analysis when changing blank cells</action>
</release>
<release version="3.2-FINAL" date="2008-10-19">
<action dev="POI-DEVELOPERS" type="fix">45866 - allowed for change of unicode compression across Continue records</action>

2
src/documentation/content/xdocs/status.xml
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@ -34,7 +34,7 @@
<!-- Don't forget to update changes.xml too! -->
<changes>
<release version="3.5-beta4" date="2008-??-??">
<action dev="POI-DEVELOPERS" type="fix">YK: remove me. required to keep Forrest DTD compiler quiet</action>
<action dev="POI-DEVELOPERS" type="fix">46053 - fixed evaluation cache dependency analysis when changing blank cells</action>
</release>
<release version="3.2-FINAL" date="2008-10-19">
<action dev="POI-DEVELOPERS" type="fix">45866 - allowed for change of unicode compression across Continue records</action>

31
src/java/org/apache/poi/ss/formula/EvaluationCache.java
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@ -58,10 +58,15 @@ final class EvaluationCache {
if (cell.getCellType() == HSSFCell.CELL_TYPE_FORMULA) {
if (fcce == null) {
if (pcce == null) {
updateAnyBlankReferencingFormulas(bookIndex, sheetIndex, cell.getRowIndex(), cell.getColumnIndex());
}
fcce = new FormulaCellCacheEntry();
if (pcce == null) {
if (_evaluationListener != null) {
_evaluationListener.onChangeFromBlankValue(sheetIndex, cell.getRowIndex(),
cell.getColumnIndex(), cell, fcce);
}
updateAnyBlankReferencingFormulas(bookIndex, sheetIndex, cell.getRowIndex(),
cell.getColumnIndex());
}
_formulaCellCache.put(cell, fcce);
} else {
fcce.recurseClearCachedFormulaResults(_evaluationListener);
@ -77,18 +82,28 @@ final class EvaluationCache {
} else {
ValueEval value = WorkbookEvaluator.getValueFromNonFormulaCell(cell);
if (pcce == null) {
if (fcce == null) {
updateAnyBlankReferencingFormulas(bookIndex, sheetIndex, cell.getRowIndex(), cell.getColumnIndex());
}
if (value != BlankEval.INSTANCE) {
// only cache non-blank values in the plain cell cache
// (dependencies on blank cells are managed by
// FormulaCellCacheEntry._usedBlankCellGroup)
pcce = new PlainValueCellCacheEntry(value);
_plainCellCache.put(loc, pcce);
if (fcce == null) {
if (_evaluationListener != null) {
_evaluationListener.onReadPlainValue(sheetIndex, cell.getRowIndex(), cell.getColumnIndex(), pcce);
_evaluationListener.onChangeFromBlankValue(sheetIndex, cell
.getRowIndex(), cell.getColumnIndex(), cell, pcce);
}
updateAnyBlankReferencingFormulas(bookIndex, sheetIndex,
cell.getRowIndex(), cell.getColumnIndex());
}
_plainCellCache.put(loc, pcce);
}
} else {
if (pcce.updateValue(value)) {
pcce.recurseClearCachedFormulaResults(_evaluationListener);
}
if (value == BlankEval.INSTANCE) {
_plainCellCache.remove(loc);
}
}
if (fcce == null) {
// was plain cell before - no change of type

3
src/java/org/apache/poi/ss/formula/IEvaluationListener.java
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@ -19,7 +19,6 @@ package org.apache.poi.ss.formula;
import org.apache.poi.hssf.record.formula.Ptg;
import org.apache.poi.hssf.record.formula.eval.ValueEval;
import org.apache.poi.hssf.usermodel.HSSFCell;
/**
* Tests can implement this class to track the internal working of the {@link WorkbookEvaluator}.<br/>
@ -51,4 +50,6 @@ interface IEvaluationListener {
*/
void sortDependentCachedValues(ICacheEntry[] formulaCells);
void onClearDependentCachedValue(ICacheEntry formulaCell, int depth);
void onChangeFromBlankValue(int sheetIndex, int rowIndex, int columnIndex,
EvaluationCell cell, ICacheEntry entry);
}

5
src/testcases/org/apache/poi/ss/formula/EvaluationListener.java
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@ -19,7 +19,6 @@ package org.apache.poi.ss.formula;
import org.apache.poi.hssf.record.formula.Ptg;
import org.apache.poi.hssf.record.formula.eval.ValueEval;
import org.apache.poi.hssf.usermodel.HSSFCell;
/**
* Tests should extend this class if they need to track the internal working of the {@link WorkbookEvaluator}.<br/>
@ -47,6 +46,10 @@ public abstract class EvaluationListener implements IEvaluationListener {
public void onClearCachedValue(ICacheEntry entry) {
// do nothing
}
public void onChangeFromBlankValue(int sheetIndex, int rowIndex, int columnIndex,
EvaluationCell cell, ICacheEntry entry) {
// do nothing
}
public void sortDependentCachedValues(ICacheEntry[] entries) {
// do nothing
}

88
src/testcases/org/apache/poi/ss/formula/TestEvaluationCache.java
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@ -38,9 +38,11 @@ import org.apache.poi.hssf.record.formula.eval.StringEval;
import org.apache.poi.hssf.record.formula.eval.ValueEval;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFEvaluationTestHelper;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator.CellValue;
import org.apache.poi.hssf.util.CellReference;
import org.apache.poi.ss.formula.PlainCellCache.Loc;
@ -136,6 +138,18 @@ public class TestEvaluationCache extends TestCase {
EvaluationCell cell = (EvaluationCell) _formulaCellsByCacheEntry.get(entry);
log("clear" + depth, cell.getRowIndex(), cell.getColumnIndex(), entry.getValue());
}
public void onChangeFromBlankValue(int sheetIndex, int rowIndex, int columnIndex,
EvaluationCell cell, ICacheEntry entry) {
log("changeFromBlank", rowIndex, columnIndex, entry.getValue());
if (entry.getValue() == null) { // hack to tell the difference between formula and plain value
// perhaps the API could be improved: onChangeFromBlankToValue, onChangeFromBlankToFormula
_formulaCellsByCacheEntry.put(entry, cell);
} else {
Loc loc = new Loc(0, sheetIndex, rowIndex, columnIndex);
_plainCellLocsByCacheEntry.put(entry, loc);
}
}
private void log(String tag, int rowIndex, int columnIndex, Object value) {
StringBuffer sb = new StringBuffer(64);
sb.append(tag).append(' ');
@ -213,6 +227,11 @@ public class TestEvaluationCache extends TestCase {
cell.setCellValue(value);
_evaluator.notifyUpdateCell(wrapCell(cell));
}
public void clearCell(String cellRefText) {
HSSFCell cell = getOrCreateCell(cellRefText);
cell.setCellType(HSSFCell.CELL_TYPE_BLANK);
_evaluator.notifyUpdateCell(wrapCell(cell));
}
public void setCellFormula(String cellRefText, String formulaText) {
HSSFCell cell = getOrCreateCell(cellRefText);
@ -555,6 +574,75 @@ public class TestEvaluationCache extends TestCase {
});
}
/**
* Make sure that when blank cells are changed to value/formula cells, any dependent formulas
* have their cached results cleared.
*/
public void testBlankCellChangedToValueCell_bug46053() {
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet("Sheet1");
HSSFRow row = sheet.createRow(0);
HSSFCell cellA1 = row.createCell(0);
HSSFCell cellB1 = row.createCell(1);
HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
cellA1.setCellFormula("B1+2.2");
cellB1.setCellValue(1.5);
fe.notifyUpdateCell(cellA1);
fe.notifyUpdateCell(cellB1);
CellValue cv;
cv = fe.evaluate(cellA1);
assertEquals(3.7, cv.getNumberValue(), 0.0);
cellB1.setCellType(HSSFCell.CELL_TYPE_BLANK);
fe.notifyUpdateCell(cellB1);
cv = fe.evaluate(cellA1); // B1 was used to evaluate A1
assertEquals(2.2, cv.getNumberValue(), 0.0);
cellB1.setCellValue(0.4); // changing B1, so A1 cached result should be cleared
fe.notifyUpdateCell(cellB1);
cv = fe.evaluate(cellA1);
if (cv.getNumberValue() == 2.2) {
// looks like left-over cached result from before change to B1
throw new AssertionFailedError("Identified bug 46053");
}
assertEquals(2.6, cv.getNumberValue(), 0.0);
}
/**
* same use-case as the test for bug 46053, but checking trace values too
*/
public void testBlankCellChangedToValueCell() {
MySheet ms = new MySheet();
ms.setCellFormula("A1", "B1+2.2");
ms.setCellValue("B1", 1.5);
ms.clearAllCachedResultValues();
ms.clearCell("B1");
ms.getAndClearLog();
confirmEvaluate(ms, "A1", 2.2);
confirmLog(ms, new String[] {
"start A1 B1+2.2",
"end A1 2.2",
});
ms.setCellValue("B1", 0.4);
confirmLog(ms, new String[] {
"changeFromBlank B1 0.4",
"clear A1",
});
confirmEvaluate(ms, "A1", 2.6);
confirmLog(ms, new String[] {
"start A1 B1+2.2",
"hit B1 0.4",
"end A1 2.6",
});
}
private static void confirmEvaluate(MySheet ms, String cellRefText, double expectedValue) {
ValueEval v = ms.evaluateCell(cellRefText);
assertEquals(NumberEval.class, v.getClass());