Patch from Josh from bug #44606 - Support calculated string values for evaluated formulas

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@637595 13f79535-47bb-0310-9956-ffa450edef68

src/documentation/content/xdocs/changes.xml

@@ -36,6 +36,7 @@
 
 		<!-- Don't forget to update status.xml too! -->
         <release version="3.1-beta1" date="2008-??-??">
+           <action dev="POI-DEVELOPERS" type="fix">44606 - Support calculated string values for evaluated formulas</action>
            <action dev="POI-DEVELOPERS" type="add">Add accessors to horizontal and vertical alignment in HSSFTextbox</action>
            <action dev="POI-DEVELOPERS" type="add">44593 - Improved handling of short DVRecords</action>
            <action dev="POI-DEVELOPERS" type="add">28627 / 44580 - Fix Range.delete() in HWPF</action>

src/documentation/content/xdocs/status.xml

@@ -33,6 +33,7 @@
 	<!-- Don't forget to update changes.xml too! -->
     <changes>
         <release version="3.1-beta1" date="2008-??-??">
+           <action dev="POI-DEVELOPERS" type="fix">44606 - Support calculated string values for evaluated formulas</action>
            <action dev="POI-DEVELOPERS" type="add">Add accessors to horizontal and vertical alignment in HSSFTextbox</action>
            <action dev="POI-DEVELOPERS" type="add">44593 - Improved handling of short DVRecords</action>
            <action dev="POI-DEVELOPERS" type="add">28627 / 44580 - Fix Range.delete() in HWPF</action>

src/java/org/apache/poi/hssf/usermodel/HSSFCell.java

@@ -589,38 +589,36 @@ public class HSSFCell
      * change the cell to a string cell and set its value.
      * If value is null then we will change the cell to a Blank cell.
      */
-
+    public void setCellValue(HSSFRichTextString value) {
-    public void setCellValue(HSSFRichTextString value)
-    {
         int row=record.getRow();
         short col=record.getColumn();
         short styleIndex=record.getXFIndex();
-        if (value == null)
+        if (value == null) {
-        {
             setCellType(CELL_TYPE_BLANK, false, row, col, styleIndex);
+            return;
+        }
+        if (cellType == CELL_TYPE_FORMULA) {
+            // Set the 'pre-evaluated result' for the formula 
+            // note - formulas do not preserve text formatting.
+            FormulaRecordAggregate fr = (FormulaRecordAggregate) record;
+            // must make new sr because fr.getStringRecord() may be null
+            StringRecord sr = new StringRecord(); 
+            sr.setString(value.getString()); // looses format
+            fr.setStringRecord(sr);
+            return;
         }
-        else
-        {
-            if ((cellType != CELL_TYPE_STRING ) && ( cellType != CELL_TYPE_FORMULA))
-            {
-                setCellType(CELL_TYPE_STRING, false, row, col, styleIndex);
-            }
-            int index = 0;
 
-            UnicodeString str = value.getUnicodeString();            
+        if (cellType != CELL_TYPE_STRING) {
-//          jmh            if (encoding == ENCODING_COMPRESSED_UNICODE)
+            setCellType(CELL_TYPE_STRING, false, row, col, styleIndex);
-//          jmh            {
-//          jmh                str.setCompressedUnicode();
-//          jmh            } else if (encoding == ENCODING_UTF_16)
-//          jmh            {
-//          jmh                str.setUncompressedUnicode();
-//          jmh            }
-            index = book.addSSTString(str);            
-            (( LabelSSTRecord ) record).setSSTIndex(index);
-            stringValue = value;
-            stringValue.setWorkbookReferences(book, (( LabelSSTRecord ) record));
-            stringValue.setUnicodeString(book.getSSTString(index));            
         }
+        int index = 0;
+
+        UnicodeString str = value.getUnicodeString();
+        index = book.addSSTString(str);
+        (( LabelSSTRecord ) record).setSSTIndex(index);
+        stringValue = value;
+        stringValue.setWorkbookReferences(book, (( LabelSSTRecord ) record));
+        stringValue.setUnicodeString(book.getSSTString(index));
     }
 
     public void setCellFormula(String formula) {

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

@@ -1,4 +1,3 @@
-
 /* ====================================================================
    Licensed to the Apache Software Foundation (ASF) under one or more
    contributor license agreements.  See the NOTICE file distributed with
@@ -16,7 +15,6 @@
    limitations under the License.
 ==================================================================== */
 
-
 package org.apache.poi.hssf.usermodel;
 
 import java.io.File;
@@ -24,12 +22,11 @@ import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.util.Date;
 import java.util.GregorianCalendar;
-import java.util.List;
 
+import junit.framework.AssertionFailedError;
 import junit.framework.TestCase;
 
 import org.apache.poi.hssf.model.Sheet;
-import org.apache.poi.hssf.record.HyperlinkRecord;
 import org.apache.poi.hssf.util.HSSFColor;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 import org.apache.poi.util.TempFile;
@@ -41,12 +38,7 @@ import org.apache.poi.util.TempFile;
  * @author  Dan Sherman (dsherman at isisph.com)
  * @author Alex Jacoby (ajacoby at gmail.com)
  */
-
+public final class TestHSSFCell extends TestCase {
-public class TestHSSFCell
-extends TestCase {
-    public TestHSSFCell(String s) {
-        super(s);
-    }
 
     /**
      * test that Boolean and Error types (BoolErrRecord) are supported properly.
@@ -388,6 +380,17 @@ extends TestCase {
     	assertEquals("Formula", "A1+B1", c.toString());
     }
     
+    public void testSetStringInFormulaCell_bug44606() {
+        HSSFWorkbook wb = new HSSFWorkbook();
+        HSSFCell cell = wb.createSheet("Sheet1").createRow(0).createCell((short)0);
+        cell.setCellFormula("B1&C1");
+        try {
+            cell.setCellValue(new HSSFRichTextString("hello"));
+        } catch (ClassCastException e) {
+            throw new AssertionFailedError("Identified bug 44606");
+        }
+    }
+    
     public static void main(String [] args) {
         System.out
         .println("Testing org.apache.poi.hssf.usermodel.TestHSSFCell");