Bug 123035 Serialize primitive types, hashmaps and other Java classes not using Java serialization method
If you take a look at the serialized engine output, we frequently see java classes appearing. I see String class; I see PageHint class; I see Hashmap classes. All of these should be gone so that BIRT document is independent of any Java-based class serialization. DtE team will move primitive type serialization to BIRT.CORE, see 123034. Engine can use that.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/DataExtractionTask.java
while( keyIter.hasNext( ))
				{
					IBaseQueryDefinition query = (IBaseQueryDefinition)keyIter.next( );
					dispName = (String)mapQueryToDispName.get( query );
					addToResultSetList( query, dispName );
				}
			}
		}
		return resultMetaList;
	}
	/*
	 * create IResultSetItem using display name and IResultMetaData 
	 */
	private void addToResultSetList( IBaseQueryDefinition query, 
			String displayName )
	{
		assert query != null;
		assert displayName != null;
		
		ResultMetaData resultMeta = new ResultMetaData(
				getValueExpressions( query ));
		IResultSetItem resultItem = new ResultSetItem(displayName, resultMeta);
		
		resultMetaList.add( resultItem );
	}
	
	public void selectColumns( String[] columnNames )
	{
		selectedColumns = columnNames;
		currentResult = null;