Improve error message when formulas cannot be evaluated for some rows in SXSSF

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1889204 13f79535-47bb-0310-9956-ffa450edef68

poi-ooxml/src/main/java/org/apache/poi/xssf/streaming/SXSSFEvaluationSheet.java

@@ -44,7 +44,7 @@ final class SXSSFEvaluationSheet implements EvaluationSheet {
     public int getLastRowNum() {
         return _xs.getLastRowNum();
     }
-    
+
     /* (non-Javadoc)
      * @see org.apache.poi.ss.formula.EvaluationSheet#isRowHidden(int)
      * @since POI 4.1.0
@@ -60,7 +60,7 @@ final class SXSSFEvaluationSheet implements EvaluationSheet {
         SXSSFRow row = _xs.getRow(rowIndex);
         if (row == null) {
             if (rowIndex <= _xs.getLastFlushedRowNum()) {
-                throw new SXSSFFormulaEvaluator.RowFlushedException(rowIndex);
+                throw new SXSSFFormulaEvaluator.RowFlushedException(rowIndex, _xs.getLastFlushedRowNum());
             }
             return null;
         }
@@ -70,7 +70,7 @@ final class SXSSFEvaluationSheet implements EvaluationSheet {
         }
         return new SXSSFEvaluationCell(cell, this);
     }
-    
+
     /* (non-JavaDoc), inherit JavaDoc from EvaluationSheet
      * @since POI 3.15 beta 3
      */

poi-ooxml/src/main/java/org/apache/poi/xssf/streaming/SXSSFFormulaEvaluator.java

@@ -112,7 +112,10 @@ public final class SXSSFFormulaEvaluator extends BaseXSSFFormulaEvaluator {
                 // Check if any rows have already been flushed out
                 int lastFlushedRowNum = ((SXSSFSheet) sheet).getLastFlushedRowNum();
                 if (lastFlushedRowNum > -1) {
-                    if (! skipOutOfWindow) throw new RowFlushedException(0);
+                    if (!skipOutOfWindow) {
+                    	throw new RowFlushedException(0, lastFlushedRowNum);
+					}
+
                     LOG.atInfo().log("Rows up to {} have already been flushed, skipping", box(lastFlushedRowNum));
                 }
             }
@@ -146,8 +149,8 @@ public final class SXSSFFormulaEvaluator extends BaseXSSFFormulaEvaluator {
         }
     }
     public static class RowFlushedException extends IllegalStateException {
-        protected RowFlushedException(int rowNum) {
-            super("Row " + rowNum + " has been flushed, cannot evaluate all cells");
+        protected RowFlushedException(int rowNum, int lastFlushedRowNum) {
+            super("Row " + rowNum + " has been flushed (rows up to " + lastFlushedRowNum + " have been flushed), cannot evaluate all cells");
         }
     }
 }