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/DataGenerationEngine.java
if ( queryResultStack.size( ) > 0 )
		{
			queryResultStack.removeLast( );
		}
	}
	public void shutdown( )
	{
		assert ( queryResultStack.size( ) == 0 );
		
		storeDteMetaInfo( );
		dataEngine.shutdown( );
	}
	private void storeDteMetaInfo( )
	{
		try
		{
			ObjectOutputStream oos = new ObjectOutputStream( writer
					.createRandomAccessStream( DATA_META_STREAM ) );
			oos.writeObject( mapQueryIDToResultSetIDs );
			oos.writeObject( queryResultRelations );
			oos.writeObject( queryExpressionIDs );
			oos.close( );
		}
		catch ( IOException e )
		{
			e.printStackTrace( );
		}
	}
}