Bug 200286 [Regression] Data set editor size is not correct [07]
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
* 
			 * @param dbObj
			 * @return
			 */
			private int getDbObjectType( Object dbObj )
			{
				return ( (DbObject) dbObj ).getType( );
			}
			/**
			 * 
			 * @param selection
			 * @param type
			 * @return
			 */
			private boolean isDbObjectTreeValid( TreeItem[] selection, int type )
			{
				for ( int i = 1; i < selection.length; i++ )
				{
					if ( !( selection[i].getData( ) instanceof DbObject ) )
					{
						return false;
					}
					DbObject temp = (DbObject) selection[i].getData( );
					if ( !isAcceptableDbObjectType( temp.getType( ) ) )
					{
						return false;
					}
					if ( temp.getType( ) != type && isTableOrView( type ) )
					{
						if ( isTableOrView( temp.getType( ) ) )