Add clone() to FormulaRecordAggregate

Original patch supplied by Henning Boeger
Changed to make it deeper clone, added clone to StringRecord in the process
Also added a test.


git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353033 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/record/StringRecord.java

@@ -237,5 +237,14 @@ public class StringRecord
         buffer.append("[/STRING]\n");
         return buffer.toString();
     }
+    
+    public Object clone() {
+        StringRecord rec = new StringRecord();
+        rec.field_1_string_length = this.field_1_string_length;
+        rec.field_2_unicode_flag= this.field_2_unicode_flag;
+        rec.field_3_string = this.field_3_string;
+        return rec;
+
+    }
 
 }

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

@@ -205,6 +205,14 @@ public class FormulaRecordAggregate
     {
         return formulaRecord.toString();
     }
+    
+    /**
+     * @see java.lang.Object#clone()
+     */
+    public Object clone() {
+        return new FormulaRecordAggregate((FormulaRecord) this.formulaRecord.clone(), (StringRecord) this.stringRecord.clone());
+    }
+
 
 
 }

src/testcases/org/apache/poi/hssf/record/aggregates/TestFormulaRecordAggregate.java

@@ -0,0 +1,34 @@
+/*
+ * TestFormulaRecordAggregate.java
+ *
+ * Created on March 21, 2003, 12:32 AM
+ */
+
+package org.apache.poi.hssf.record.aggregates;
+import org.apache.poi.hssf.record.FormulaRecord;
+import org.apache.poi.hssf.record.StringRecord;
+
+/**
+ *
+ * @author  avik
+ */
+public class TestFormulaRecordAggregate extends junit.framework.TestCase {
+    
+    /** Creates a new instance of TestFormulaRecordAggregate */
+    public TestFormulaRecordAggregate(String arg) {
+        super(arg);
+    }
+    
+    public void testClone() {
+        FormulaRecord f = new FormulaRecord();
+        StringRecord s = new StringRecord();
+        FormulaRecordAggregate fagg = new FormulaRecordAggregate(f,s);
+        FormulaRecordAggregate newFagg = (FormulaRecordAggregate) fagg.clone();
+        assertTrue("objects are different", fagg!=newFagg);
+        assertTrue("deep clone", fagg.getFormulaRecord() != newFagg.getFormulaRecord());
+        assertTrue("deep clone",  fagg.getStringRecord() != newFagg.getStringRecord());
+
+        
+    }
+    
+}