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
{
			ObjectInputStream ois = new ObjectInputStream( reader
					.getStream( AbstractDataEngine.DATA_META_STREAM ) );
			
			mapQueryIDToResultSetName = (HashMap) ois.readObject( );
			ois.close( );
		}
		catch ( IOException ioe )
		{
			executionContext.addException( new EngineException(
					"Can't load the data in report document", ioe ) );
			logger.log( Level.SEVERE, ioe.getMessage( ), ioe );
		}
		catch ( ClassNotFoundException cnfe )
		{
			executionContext.addException( new EngineException(
					"Can't load the data in report document", cnfe ) );
			logger.log( Level.SEVERE, cnfe.getMessage( ), cnfe );
		}
	}
	
	public void setInstanceID( InstanceID iid )
	{
		instanceId = iid;
		currentResult = null;
	}
	
	public void selectResultSet( String displayName )
	{
		assert displayName != null;