Bug 212375 [Automation][Regression]Exception occurs when preview a outputParams["xxx"]
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedOdaDSQuery.java
PreparedOdaDSQuery self = PreparedOdaDSQuery.this;
			Collection paramHints = null;
			if ( getDataSetCacheManager()
					.needsToCache( this.dataSet.getDesign( ),
							DataSetCacheUtil.getCacheOption( dataEngine.getContext( ),
									appContext ),
							DataSetCacheUtil.getCacheCount( dataEngine.getContext( ), appContext )) == true )
				paramHints = new ParameterUtil( null,
						this.dataSet,
						self.queryDefn,
						this.getQueryScope( ) ).resolveDataSetParameters( true );
			return DataSourceFactory.getFactory( )
					.getDataSource( driverName,
							driverProps,
							this.dataSource.getDesign( ),
							this.dataSet.getDesign( ),
							paramHints,
							DataSetCacheUtil.getCacheOption( self.dataEngine.getContext( ),
									appContext ),
							DataSetCacheUtil.getCacheCount( self.dataEngine.getContext( ), appContext),
							self.dataEngine.getSession( ),
							appContext );
		}
		
		/*
		 * @see org.eclipse.birt.data.engine.impl.PreparedQuery.Executor#createOdiQuery()
		 */
		protected IQuery createOdiQuery( ) throws DataException
		{
			OdaDataSetRuntime extDataSet = (OdaDataSetRuntime) dataSet;