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
/*
	 * map IBaseQueryDefinition to ReportItemDesign, namely TableItemDesign, ListItemDesign
	 * and ExtendedItemDesign
	 */
	protected HashMap mapQueryToReportItem;
	
	/*
	 * map result set display name to result set name stored by DtE.
	 */
	protected HashMap mapDispNameToResultSetName;
	
	/*
	 * have the metadata be prepared
	 */
	protected boolean isMetaDataPrepared = false;
	
	/*
	 * map query to display name
	 */
	protected HashMap mapQueryToDispName;
	
	/*
	 * map query to value expressions
	 */
	protected HashMap mapQueryToValueExprs;
	
	/*
	 * map result set name to query
	 */
	protected HashMap mapResultSetNameToQuery;