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
private void prepareMetaData( )
	{
		if( isMetaDataPrepared == true ) 
			return;
			
		mapQueryToReportItem = report.getReportItemToQueryMap( );
		mapQueryToValueExprs = report.getQueryToValueExprMap( );
		
		
		try
		{
			loadResultSetMetaData( );
		}
		catch( EngineException e )
		{
			e.printStackTrace( );
		}
		assert mapQueryIDToResultSetName != null;
		
		if (mapDispNameToResultSetName == null)
		{
			mapDispNameToResultSetName = new HashMap();
		}
		else
		{
			mapDispNameToResultSetName.clear( );
		}
		
		
		if( this.mapQueryToDispName == null )