fixed null pointer exception and shift 0

Issue #165
imixs · Nov 25, 2024 · ad4e598 · ad4e598
1 parent 333db24
commit ad4e598
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/imixs-adapters-poi/src/main/java/org/imixs/workflow/poi/POIUtil.java b/imixs-adapters-poi/src/main/java/org/imixs/workflow/poi/POIUtil.java
@@ -31,6 +31,10 @@ public class POIUtil {
      */
     public static void insertRows(XSSFSheet sheet, String cellReference, int numberOfRows) {
 
+        if (sheet == null || numberOfRows == 0 || cellReference == null || cellReference.isEmpty()) {
+            // no op
+            return;
+        }
         CellReference refCell = new CellReference(cellReference);
         XSSFRow refRow = sheet.getRow(refCell.getRow());
 
@@ -61,6 +65,11 @@ public static void insertRows(XSSFSheet sheet, String cellReference, int numberO
      */
     public static void insertColumn(XSSFSheet sheet, int startColumn, int endColumn) {
 
+        if (sheet == null || endColumn == 0) {
+            // no op
+            return;
+        }
+
         logger.fine("start Column=" + startColumn);
 
         // // Find the last column by checking all rows