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added HSSFFormulaEvaluator.setIgnoreMissingWorkbooks, see Bugzilla 52575 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1241372 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yegor Kozlov 2012-02-07 08:11:37 +00:00
parent 2e2559d80a
commit b70cf560db
3 changed files with 46 additions and 12 deletions
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20
src/java/org/apache/poi/hssf/usermodel/HSSFFormulaEvaluator.java
View File

@ -369,4 +369,24 @@ public class HSSFFormulaEvaluator implements FormulaEvaluator {
}
throw new RuntimeException("Unexpected eval class (" + eval.getClass().getName() + ")");
}
/**
* Whether to ignore missing references to external workbooks and
* use cached formula results in the main workbook instead.
* <p>
* In some cases exetrnal workbooks referenced by formulas in the main workbook are not avaiable.
* With this method you can control how POI handles such missing references:
* <ul>
* <li>by default ignoreMissingWorkbooks=false and POI throws {@link org.apache.poi.ss.formula.CollaboratingWorkbooksEnvironment.WorkbookNotFoundException}
* if an external reference cannot be resolved</li>
* <li>if ignoreMissingWorkbooks=true then POI uses cached formula result
* that already exists in the main workbook</li>
* </ul>
*
* @param ignore whether to ignore missing references to external workbooks
*/
public void setIgnoreMissingWorkbooks(boolean ignore){
_bookEvaluator.setIgnoreMissingWorkbooks(ignore);
}
}

32
src/java/org/apache/poi/ss/formula/WorkbookEvaluator.java
View File

@ -85,12 +85,6 @@ public final class WorkbookEvaluator {
private static final POILogger LOG = POILogFactory.getLogger(WorkbookEvaluator.class);
/**
* Whether to use cached formula results if external workbook references in a formula is not available.
* See Bugzilla 52575 for details.
*/
private static final String IGNORE_MISSING_WORKBOOKS = WorkbookEvaluator.class.getName() + ".IGNORE_MISSING_WORKBOOKS";
private final EvaluationWorkbook _workbook;
private EvaluationCache _cache;
/** part of cache entry key (useful when evaluating multiple workbooks) */
@ -103,6 +97,8 @@ public final class WorkbookEvaluator {
private final IStabilityClassifier _stabilityClassifier;
private final AggregatingUDFFinder _udfFinder;
private boolean _ignoreMissingWorkbooks = false;
/**
* @param udfFinder pass <code>null</code> for default (AnalysisToolPak only)
*/
@ -310,9 +306,7 @@ public final class WorkbookEvaluator {
catch (NotImplementedException e) {
throw addExceptionInfo(e, sheetIndex, rowIndex, columnIndex);
} catch (RuntimeException re) {
if (re.getCause() instanceof WorkbookNotFoundException
//To be replaced by configuration infrastructure
&& Boolean.valueOf(System.getProperty(IGNORE_MISSING_WORKBOOKS))) {
if (re.getCause() instanceof WorkbookNotFoundException && _ignoreMissingWorkbooks) {
logInfo(re.getCause().getMessage() + " - Continuing with cached value!");
switch(srcCell.getCachedFormulaResultType()) {
case Cell.CELL_TYPE_NUMERIC:
@ -671,4 +665,24 @@ public final class WorkbookEvaluator {
public FreeRefFunction findUserDefinedFunction(String functionName) {
return _udfFinder.findFunction(functionName);
}
/**
* Whether to ignore missing references to external workbooks and
* use cached formula results in the main workbook instead.
* <p>
* In some cases exetrnal workbooks referenced by formulas in the main workbook are not avaiable.
* With this method you can control how POI handles such missing references:
* <ul>
* <li>by default ignoreMissingWorkbooks=false and POI throws {@link WorkbookNotFoundException}
* if an external reference cannot be resolved</li>
* <li>if ignoreMissingWorkbooks=true then POI uses cached formula result
* that already exists in the main workbook</li>
* </ul>
*
* @param ignore whether to ignore missing references to external workbooks
* @see <a href="https://issues.apache.org/bugzilla/show_bug.cgi?id=52575">Bug 52575</a> for details
*/
public void setIgnoreMissingWorkbooks(boolean ignore){
_ignoreMissingWorkbooks = ignore;
}
}

6
src/testcases/org/apache/poi/ss/formula/TestMissingWorkbook.java
View File

@ -72,9 +72,9 @@ public class TestMissingWorkbook extends TestCase {
assertEquals(Cell.CELL_TYPE_FORMULA, lB1Cell.getCellType());
assertEquals(Cell.CELL_TYPE_FORMULA, lC1Cell.getCellType());
FormulaEvaluator evaluator = mainWorkbook.getCreationHelper().createFormulaEvaluator();
System.setProperty(propertyKey, Boolean.toString(true));
HSSFFormulaEvaluator evaluator = mainWorkbook.getCreationHelper().createFormulaEvaluator();
evaluator.setIgnoreMissingWorkbooks(true);
assertEquals(Cell.CELL_TYPE_NUMERIC, evaluator.evaluateFormulaCell(lA1Cell));
assertEquals(Cell.CELL_TYPE_STRING, evaluator.evaluateFormulaCell(lB1Cell));
assertEquals(Cell.CELL_TYPE_BOOLEAN, evaluator.evaluateFormulaCell(lC1Cell));