Examples of org.locationtech.udig.catalog.IServiceFactory

org.locationtech.udig.catalog.IServiceFactory
Builds *new* IService handle by using ServiceExtention to process provided connection parameters.
Please note that the *ID* associated with a set of connection parameters is the sole responsible of the individual ServiceExtention implementations (after all only ShpServiceExtention knows how to take connection parameters and determine a good identifier).
Connection parameters, and dragNdrop URLs, are only used as a guide:
- Information that was not used may be removed
- Authentication information (such as username and password) when we build a security plugin
- Where possible we make use of sensible defaults for missing information
We hope that for most uses client code will be able to store an ID directly and use it to look up a live resources in the Catalog. The use of IServiceFactory should be rare and unusual.
Using Connection Parameters to connect to an IService
If you are working with client code (such as a project file) that stores connection information directly please use IServiceFactory to create a IService handle and use the service.getID() to look up the live resource in the local catalog.
1. User supplied connection parameters
2. IServiceFactory.createService( parameters )
3. Process list of candidate services; allowing the user to choose if needed
4. Catalog findById( service.getIdentifier() )
  - if non null the service is already known (the returned service may not be in the location you expect; for example if the file has been moved and the catalog knows about it)
  - if null the catalog has never met this service before; use add( service ) to register it
5. service.getInfo( monitor ) to ensure the service can connect
  - If service.getStatus() == Status.BROKEN you can check service.getMessage() to find out why.
  - If service.getStatus() == Status.CONNECTED everything is good
Use Drag and Drop URLs to connect to an IService
Handling a drag and drop URL works in a similar manner; this time we have even less information to work with and it is much more likely that the user will need to choose between the available IService alternatives.
Also not that the IService handles returned may not have enough information to connect; a classic case is a security enabled WFS capabilities document. User involvement will be required. @since 1.0 Initial version caused some confusion over use of acquire @version 1.1 Explicitly broke generation of default parameters and creating a IService intoseparate steps @author Jody Garnett (Refractions Research)

  
  @Before
  public void setUp() throws Exception {
    //get a georesource
    ICatalog catalog = CatalogPlugin.getDefault().getLocalCatalog();
    IServiceFactory sFactory 
      = CatalogPlugin.getDefault().getServiceFactory();
    
    HashMap params = new HashMap();
    params.put("dummy", DummyService.url);
    
    List<IService> services = sFactory.createService(params);
    service = services.get(0);
    
    CreateMapCommand cmCommand = 
      new CreateMapCommand(null,(List<IGeoResource>) service.resources(null),null);
    ProjectPlugin.getPlugin().getProjectRegistry().getDefaultProject()

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   */
  public static void addFileToCatalogLong() throws Exception {
    File file = new File( "C:\\data\\cities.shp" );
    URL url = file.toURI().toURL();
    
    IServiceFactory serviceFactory = CatalogPlugin.getDefault().getServiceFactory();
    List<IService> created = serviceFactory.createService( url );
    
    IRepository local = CatalogPlugin.getDefault().getLocal();
    for( IService service : created ){
        IService registered = local.add(service);
        //...

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        URL fileUrl = FileLocator.toFileURL( url );
        System.out.println("Bundle URL"+ fileUrl );
        
        //get the service factory 
        IServiceFactory factory = CatalogPlugin.getDefault().getServiceFactory();
        
        //create the service
        
        List<IService> services = factory.createService( fileUrl );
        
        //ensure the service was created
        assertNotNull(services);
        assertEquals(1, services.size() );

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     *
     * @param destination
     * @throws MalformedURLException
     */
  private void addToCatalog(File destination) throws MalformedURLException {
    IServiceFactory serviceFactory = CatalogPlugin.getDefault().getServiceFactory();
    URL url = DataUtilities.fileToURL( destination );
        List<IService> services = serviceFactory.createService(url);
    ICatalog localCatalog = CatalogPlugin.getDefault().getLocalCatalog();;
    for (IService service : services) {
      localCatalog.add(service);
    }
  }

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        }
        Activator instance = Activator.getDefault();
        assertNotNull("Run as a JUnit Plug-in Test", instance);


        // get the service factory
        IServiceFactory factory = CatalogPlugin.getDefault().getServiceFactory();


        // create the service
        URL url = new URL( getCapabilities );
        List<IService> services = factory.createService(url);


        // ensure the service was created
        assertNotNull(services);
        assertEquals(1, services.size());

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    }


    @Override
    public boolean performDrop( Object data ) {


        IServiceFactory serviceFactory = CatalogPlugin.getDefault().getServiceFactory();
        IRepository local = CatalogPlugin.getDefault().getLocal();
        
        if (data instanceof URL) {
            URL url = (URL) data;
            try {
                local.acquire( url, null );  // add to catalog if needed
                
            } catch (IOException e) {
                CatalogUIPlugin.log( "Drag and Drop "+url, e);
            }
            //List<IService> candidates = serviceFactory.createService((URL) data);
        } else if (data instanceof java.util.Map) {
            java.util.Map<String, Serializable> connectionParams = (java.util.Map<String, Serializable>) data;
            try {
                local.acquire(connectionParams, null);
            } catch (IOException e) {
                CatalogUIPlugin.log( "Drag and Drop "+connectionParams, e);
            }
            //List<IService> candidates = serviceFactory.createService( connectionParams );            
        } else if (data instanceof String || data instanceof String[]) {
            List<URL> urls = null;
            if (data instanceof String) {
                urls = CorePlugin.stringsToURLs((String) data);
            } else {
                urls = CorePlugin.stringsToURLs((String[]) data);
            }
            for( URL url : urls ) {
                List<IService> services = serviceFactory
                        .createService(url);
                for( IService service : services ) {
                    CatalogPlugin.getDefault().getLocalCatalog().add(service);
                }
            }

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    public void addServiceToCatalogAndMap( String outputFile, boolean addToCatalog, boolean addToActiveMap,
            IProgressMonitor progressMonitor ) {
        try {
            URL fileUrl = new File(outputFile).toURI().toURL();
            if (addToCatalog) {
                IServiceFactory sFactory = CatalogPlugin.getDefault().getServiceFactory();
                ICatalog catalog = CatalogPlugin.getDefault().getLocalCatalog();
                List<IService> services = sFactory.createService(fileUrl);
                for( IService service : services ) {
                    catalog.add(service);
                    if (addToActiveMap) {
                        IMap activeMap = ApplicationGIS.getActiveMap();
                        int layerNum = activeMap.getMapLayers().size();

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      ApplicationGIS.addLayersToMap(map, Collections.singletonList(tiffResource), -1);
    }
  }


  private IGeoResource getTiffResource(URL url) {
    IServiceFactory factory = CatalogPlugin.getDefault().getServiceFactory();
    List<IService> services = factory.createService(url);


    if (services.isEmpty()) {
      return null;
    }
    for (IService service : services) {

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     * up each time) will be in trouble.
     * @param servers List of IService handles to reset
     * @param monitor Progress Monitor used to interrupt the command if needed
     */
    public static void reset( List<IService> servers, IProgressMonitor monitor ) {
        IServiceFactory serviceFactory = CatalogPlugin.getDefault().getServiceFactory();
        ICatalog catalog = CatalogPlugin.getDefault().getLocalCatalog();


        for( IService original : servers ) {
            try {
                final ID id = original.getID();
                CatalogUIPlugin.trace("Reset service " + original.getIdentifier()); //$NON-NLS-1$


                Map<java.lang.String, java.io.Serializable>
                    connectionParams = original.getConnectionParams();


                IService replacement = null; // unknown
                TEST: for( IService candidate : serviceFactory.createService(connectionParams) ) {
                    try {
                        CatalogUIPlugin.trace(id + " : connecting"); //$NON-NLS-1$
                        IServiceInfo info = candidate.getInfo(monitor);
                        
                        CatalogUIPlugin.trace(id + " : found " + info.getTitle()); //$NON-NLS-1$

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        for( IResolve service : services ) {
            if (service.canResolve(type)) {
                return service.getIdentifier();
            }
        }
        IServiceFactory serviceFactory = CatalogPlugin.getDefault().getServiceFactory();
        List<IService> candidates = serviceFactory.createService(url);
        try {
            for( Iterator<IService> i=candidates.iterator(); i.hasNext();){
                IService service = i.next();
                if (service.canResolve(type)) {
                    IService registered = local.add(service);
                    i.remove(); // don't clean this one up
                    return registered.getIdentifier();
                }
            }
        }
        finally {
            serviceFactory.dispose( candidates, null );
        }
        // It is okay if we don't find anything, the user interface
        // will let the user know - tempting to force a broken WMS
        // handle onto the catalog though
        return url;

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Related Classes of org.locationtech.udig.catalog.IServiceFactory

org.locationtech.udig.catalog.internal.CatalogImpl

org.locationtech.udig.catalog.internal.shp.ShapeMover

org.locationtech.udig.catalog.internal.ui.actions.ResetService

org.locationtech.udig.catalog.internal.ui.CatalogViewDropAdapter

org.locationtech.udig.catalog.internal.ui.ops.NewFeatureTypeOpTest

org.locationtech.udig.catalog.jgrass.utils.JGrassCatalogUtilities

org.locationtech.udig.catalog.tests.ShapeCatalogTest

org.locationtech.udig.catalog.ui.export.CatalogExportWizard

org.locationtech.udig.catalog.ui.workflow.EndConnectionState

org.locationtech.udig.catalog.wmsc.server.WMSTileSetResolverTest

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Examples of org.locationtech.udig.catalog.IServiceFactory

Using Connection Parameters to connect to an IService

Use Drag and Drop URLs to connect to an IService

Related Classes of org.locationtech.udig.catalog.IServiceFactory