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/DataPresentationEngine.java
logger.log( Level.SEVERE, "Can't load the report query" );
				return null;
			}
			queryResults = dataEngine.getQueryResults( resultSetID );
			validateQueryResult( queryResults );
			resultSet = new DteResultSet( queryResults, this, context );
			queryResultStack.addLast( resultSet );
			return resultSet;
		}
		catch ( BirtException be )
		{
			logger.log( Level.SEVERE, be.getMessage( ) );
			context.addException( be );
			return null;
		}
	}
	public void close( )
	{
		if ( queryResultStack.size( ) > 0 )
		{
			queryResultStack.removeLast( );
		}
	}
	public void shutdown( )
	{
		assert ( queryResultStack.size( ) == 0 );
		dataEngine.shutdown( );
	}
}