From 16b02126b43428f0098bd1354c792fa78024b98a Mon Sep 17 00:00:00 2001
From: snotling <damiano.albani@gmail.com>
Date: Fri, 24 May 2013 17:52:22 +0300
Subject: [PATCH] MODE-1947 Corrected potential null pointer exception in Excel
 sequencer

Handle undefined cells in Excel documents
---
 .../sequencer/msoffice/excel/ExcelMetadataReader.java        | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sequencers/modeshape-sequencer-msoffice/src/main/java/org/modeshape/sequencer/msoffice/excel/ExcelMetadataReader.java b/sequencers/modeshape-sequencer-msoffice/src/main/java/org/modeshape/sequencer/msoffice/excel/ExcelMetadataReader.java
index 447d4b8c4a..5ef037fad5 100644
--- a/sequencers/modeshape-sequencer-msoffice/src/main/java/org/modeshape/sequencer/msoffice/excel/ExcelMetadataReader.java
+++ b/sequencers/modeshape-sequencer-msoffice/src/main/java/org/modeshape/sequencer/msoffice/excel/ExcelMetadataReader.java
@@ -71,6 +71,11 @@ public static ExcelMetadata instance( InputStream stream ) throws IOException {
                 for (int cellNum = row.getFirstCellNum(); cellNum < lastCellNum; cellNum++) {
                     HSSFCell cell = row.getCell(cellNum);
 
+                    // Undefined cells are returned as null
+                    if (cell == null) {
+                        continue;
+                    }
+
                     /*
                      * Builds a string of body content from all string, numeric,
                      * and formula values in the body of each worksheet.