Bug 199021 Error message pops up several times when click an invalid dataset
Description: There is a sqlserver datasource and dataset, remove the jtds driver to let the dataset invalid. Double click on the dataset, the error message will pop up serveral times. Build version:2.2.0.v20070807-0630 Steps to reproduce: 1. Create a sqlserver datasource and dataset. 2. Remove the jtds driver, and the dataset will be invalid. 3. Double click on the dataset. Expect result: Error message pops up once to indicate the problem. Actual result: Error message pops up serveral times.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
String fullyQualifiedTableName = "STORED PROCEDURES";
						if ( schemaName != null
								&& schemaName.trim( ).length( ) > 0 )
						{
							fullyQualifiedTableName = schemaName
									+ "." + "STORED PROCEDURES";
						}
						DbObject dbObject = new DbObject( fullyQualifiedTableName,
								"STORED PROCEDURES",
								DbObject.PROCEDURE_TYPE,
								tableImage );
						tableList.add( dbObject );
					}
					if ( schemaTreeItem != null )
					{
						TreeItem item[] = Utility.createTreeItems( schemaTreeItem,
								tableList,
								SWT.NONE,
								null );
						
						if ( expandDbObjectsTree
								&& item != null && item.length > 0 )
						{
							availableDbObjectsTree.showItem( item[0] );
						}
					}
				}
				catch ( SQLException e )
				{
					logger.log( Level.FINE, e.getMessage( ), e );