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/data/dte/AbstractDataEngine.java
out.writeObject( afterExpressionIDs );
			out.writeObject( rowExpressionIDs );
			out.writeObject( groupIDs );
			out.writeObject( subqueryIDs );
		}
		private void readObject( ObjectInputStream in ) throws IOException,
				ClassNotFoundException
		{
			beforeExpressionIDs = ( ArrayList ) in.readObject( );
			afterExpressionIDs = ( ArrayList ) in.readObject( );
			rowExpressionIDs = ( ArrayList ) in.readObject( );
			groupIDs = ( ArrayList ) in.readObject( );
			subqueryIDs = ( ArrayList ) in.readObject( );
		}
	}
	protected String getResultID( String parentID, String rowid )
	{
		Iterator iter = queryResultRelations.iterator( );
		while ( iter.hasNext( ) )
		{
			Key key = ( Key ) iter.next( );
			if ( key.equalTo( parentID, rowid ) )
			{
				return key.resultSetID;
			}
		}
		return null;
	}
}