Bug #54016 - Avoid exception when parsing workbooks with DConRefRecord in row aggregate

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1402482 13f79535-47bb-0310-9956-ffa450edef68

src/documentation/content/xdocs/status.xml

 
     <changes>
         <release version="3.9-beta1" date="2012-??-??">
+          <action dev="poi-developers" type="fix">54016 - Avoid exception when parsing workbooks with DConRefRecord in row aggregate</action>
           <action dev="poi-developers" type="fix">54008 - Fixed Ant build to support build directories with blanks</action>
           <action dev="poi-developers" type="fix">53374 - Avoid exceptions when parsing hyperlinks of type "javascript://"</action>
           <action dev="poi-developers" type="fix">53404 - Fixed compatibility bug with modifying xls files created by POI-3.6 and earlier</action>

src/java/org/apache/poi/hssf/record/aggregates/RowRecordsAggregate.java

 import java.util.TreeMap;
 
 import org.apache.poi.hssf.model.RecordStream;
-import org.apache.poi.hssf.record.ArrayRecord;
-import org.apache.poi.hssf.record.CellValueRecordInterface;
-import org.apache.poi.hssf.record.ContinueRecord;
-import org.apache.poi.hssf.record.DBCellRecord;
-import org.apache.poi.hssf.record.DimensionsRecord;
-import org.apache.poi.hssf.record.FormulaRecord;
-import org.apache.poi.hssf.record.IndexRecord;
-import org.apache.poi.hssf.record.MergeCellsRecord;
-import org.apache.poi.hssf.record.MulBlankRecord;
-import org.apache.poi.hssf.record.Record;
-import org.apache.poi.hssf.record.RowRecord;
-import org.apache.poi.hssf.record.SharedFormulaRecord;
-import org.apache.poi.hssf.record.TableRecord;
-import org.apache.poi.hssf.record.UnknownRecord;
+import org.apache.poi.hssf.record.*;
 import org.apache.poi.ss.formula.FormulaShifter;
 import org.apache.poi.ss.SpreadsheetVersion;
 
 				case RowRecord.sid:
 					insertRow((RowRecord) rec);
 					continue;
-				case DBCellRecord.sid:
+                case DConRefRecord.sid:
+                    addUnknownRecord(rec);
+                    continue;
+                case DBCellRecord.sid:
 					// end of 'Row Block'.  Should only occur after cell records
 					// ignore DBCELL records because POI generates them upon re-serialization
 					continue;

src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java

 
         wb = writeOutAndReadBack((HSSFWorkbook) wb);
     }
+
+    public void test54016() {
+        // This used to break
+        HSSFWorkbook wb = openSample("54016.xls");
+        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
+    }
 }