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
List dataSetList = rptHandle.getAllDataSets( );
		for ( int i = 0; i < dataSetList.size( ); i++ )
		{
			DataSetHandle dataset = ( DataSetHandle ) dataSetList.get( i );
			try
			{
				dataEngine
						.defineDataSet( adaptor.createDataSetDesign( dataset ) );
			} catch ( BirtException be )
			{
				logger.log( Level.SEVERE, be.getMessage( ), be );
				context.addException( dataset, be );
			}
		}
		
		new ReportQueryBuilder( ).build( report, context );
		doPrepareQueryID( report, appContext );
	}
	abstract protected void doPrepareQueryID( Report report, Map appContext );
	public IResultSet execute( IBaseQueryDefinition query )
	{
		if ( query instanceof IQueryDefinition )
		{
			return doExecute( query );
		} else if ( query instanceof ISubqueryDefinition )
		{
			return getSubqueryResult( query );
		}
		return null;
	}