Examples of org.locationtech.udig.catalog.IService

org.locationtech.udig.catalog.IService

Represents a geo spatial service handle. Follows the same design as IResource.

Represents a spatial service, which may be lazily loaded. The existance of this object does not ensure that the advertized data is guaranteed to exist, nor does this interface guarantee that the service exists based on this object's existance. We should also note the resource management is left to the user, and that resolve() is not guaranteed to return the same instance object from two subsequent calls, but may. This is merely a handle to some information about a service, and a method of aquiring an instance of the service ...

NOTE: This may be the result of communications with a metadata service, and as such this service described may not be running right now. Remember to check the service status.

Implementing an IService

Implement the abstract methods and you are good to go.

Extending an IService

You may want to implement your own IService in order to provide a handle for a new kind of API.

New method:

  public API getAPI( ProgressMonitor monitor){ if (monitor == null) monitor = new NullProgressMonitor(); monitor.beingTask("Connect to API",2); try {             String server = getConnectionParams().get("server"); monitor.worked(1); return new API( s ); } finally { monitor.done(); } }

(note the use of NullProgressMonitor)

Optional: Customize resolve method to advertise your new API "dynamically"

  public <T> boolean canResolve( Class<T> adaptee ) { return adaptee != null && (adaptee.isAssignableFrom(API.class) || super.canResolve(adaptee)); } public <T> T resolve( Class<T> adaptee, IProgressMonitor monitor ) throws IOException { if (monitor == null) monitor = new NullProgressMonitor();  if (adaptee == null) throw new NullPointerException("No adaptor specified" ); if (adaptee.isAssignableFrom(API.class)) { return adaptee.cast(getAPI(monitor)); } return super.resolve(adaptee, monitor); }

(note the call to super)

Optional: cache your API as the "connection"

  API api = null; Throwable msg = null; public synchronized API getAPI( ProgressMonitor monitor){ if( api != null ) return api; if (monitor == null) monitor = new NullProgressMonitor(); monitor.beingTask("Connect to API",2); try {             String server = getConnectionParams().get("server"); monitor.worked(1); api = new API( s ); monitor.worked(1); return api; } finally { monitor.done(); } } public Status getStatus() { return msg != null? Status.BROKEN : api == null? Status.NOTCONNECTED : Status.CONNECTED; } public Throwable getMessage(){ return msg; } public synchronized void dispose( ProgressMonitor monitor ){ if( api != null ){ api.dispose(); api = null; } if( msg != null ) msg = null; }

(Note the use of getMessage and getStatus)

@author David Zwiers, Refractions Research @since 0.6 @version 1.2 @see IServiceInfo @see IServiceFactory

                    try {
                        if(text){
                          if(element instanceof IGeoResource) {
                            IGeoResource resource = (IGeoResource) element;
                            data.text = resource.getInfo(monitor).getTitle();
                            IService service = resource.service(monitor);
                            if( service != null ){
                                service.getPersistentProperties().put(resource.getID() + "_title", data.text);
                            }
                          } else if(element instanceof IService) {
                            IService service = (IService) element;
                            IServiceInfo info = service.getInfo(monitor);
                            if( info != null ){
                                data.text = info.getTitle();
                                service.getPersistentProperties().put("title", data.text);
                            }
                          } else if(element instanceof IProcess) {
                            IProcess proc = (IProcess) element;
                            data.text = proc.getInfo(monitor).getTitle();
                          } else if(element instanceof ISearch) {

View Full Code Here

                                LayerImpl layer = (LayerImpl) firstElement;
                                geoResource = layer.getGeoResource();


                            }
                            if (firstElement instanceof IService) {
                                IService service = (IService) firstElement;
                                List< ? extends IGeoResource> resources = service.resources(new NullProgressMonitor());
                                if (resources.size() > 0) {
                                    geoResource = resources.get(0);
                                }
                            }
                            if (geoResource != null) {

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                        for( IService service : services ) {
                            Map<String, Serializable> params = new HashMap<String, Serializable>(service
                                    .getConnectionParams());
                            params.put(ShapefileDataStoreFactory.DBFCHARSET.key, newCharset.name());
                            
                            IService newService = extension.createService(service.getIdentifier(), params);
                            CatalogPlugin.getDefault().getLocalCatalog().replace(service.getID(), newService);
                        }
                    }
                    
                });

View Full Code Here

    private List< ? extends IGeoResource> members;
    private List< ? extends IGeoResource> members2;


    @Before
    public void setUp() throws Exception {
        IService service = createService(new URL("http://serviceWMSRenderMetricsTest"), true); //$NON-NLS-1$
        members = service.resources(new NullProgressMonitor());
        service = createService(new URL("http://serviceWMSRenderMetricsTest2"), true); //$NON-NLS-1$
        members2 = service.resources(new NullProgressMonitor());
        map = MapTests.createNonDynamicMapAndRenderer(members.get(0), null);
        map.getLayersInternal().add(map.getLayerFactory().createLayer(members.get(1)));
    }

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        layer2.setSrs(BBOXES2.keySet());
        resolves.add(layer2);
        resourceResolveTos.add(resolves);
        if( make2Resources )
            resourceResolveTos.add(resolves2);
        IService service = DummyService.createService(string, null, resourceResolveTos);
        return service;
    }

View Full Code Here

    private ReferencedEnvelope viewport;
    private Map map;


    @Before
    public void setUp() throws Exception {
        IService service = WMSRenderMetricsTest.createService(new URL(
                "http://BasicWMSRenderer2Test"), false); //$NON-NLS-1$
        members = service.resources(new NullProgressMonitor());
        map = MapTests.createNonDynamicMapAndRenderer(members.get(0), new Dimension(1024, 1024));
        viewportBBox = new Envelope(-180, 180, -90, 90);
        viewportCRS = DefaultGeographicCRS.WGS84;
        viewport = new ReferencedEnvelope(viewportBBox, viewportCRS);
        wmsLayers = Arrays.asList(members.get(0).resolve(Layer.class, new NullProgressMonitor()));

View Full Code Here

        IProgressMonitor monitor=new NullProgressMonitor();
        try {
            MemoryServiceExtensionImpl ext = new MemoryServiceExtensionImpl();
            URL id = new URL("http://localhost/scratch"); //$NON-NLS-1$
            params = ext.createParams(id);
            IService service = ext.createService(id, params);
            DataStore ds = service.resolve(DataStore.class, monitor);
            int i=0;
            String typename="New_Type_"; //$NON-NLS-1$
            List<String> typenames = Arrays.asList(ds.getTypeNames());
            while( typenames.contains(typename+i)){
                i++;

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    private void setInput( ResourceSelectionState state ) {
        grayedElements.clear();
        int checked=0;
        if (state.getWorkflow().getContext() instanceof IResolveFolder){
            IResolveFolder resolveFolder = (IResolveFolder) state.getWorkflow().getContext();
            IService service = resolveFolder.getService(new NullProgressMonitor());
            schemaSelected = resolveFolder.getTitle();
            viewer.setInput(service);
        }else {
            viewer.setInput(state.getServices()); // initialize viewer input to nothing
            Map<IGeoResource, IService> resources = state.getResources();
            
            if (resources != null) {
                Set<IService> expanded=new HashSet<IService>();
                for( Map.Entry<IGeoResource, IService> entry:resources.entrySet() ) {
                    checked++;
                    IGeoResource resource = entry.getKey();
                    IService service = entry.getValue();
                    
                    viewer.setChecked(resource, true);
                    viewer.setChecked(service, true);
                    expanded.add(service);
                }

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            for( Map.Entry<ServiceExtension, Map<String, Serializable>> candidateEntry : available.entrySet() ) {
                String extentionIdentifier = candidateEntry.getKey().getClass().getName();
                ServiceExtension serviceExtension = candidateEntry.getKey();
                Map<String, Serializable> connectionParameters = candidateEntry.getValue();
                try {
                    IService sevice = serviceExtension.createService(null, connectionParameters);
                    CatalogImpl.runInterceptor(sevice, ServiceInterceptor.CREATED_ID);
                    candidates.add(sevice);
//                    List<IService> service = createService(connectionParameters);
//                    if (service != null && !service.isEmpty()) {
//                        for( IService created : service ){
//                            CatalogImpl.runInterceptor(created, ServiceInterceptor.CREATED_ID);
//                            candidates.add(created);
//                        }
//                    }
                } catch (Throwable deadService) {
                    CatalogPlugin.log(extentionIdentifier + " could not create service", deadService); //$NON-NLS-1$
                }
            }
        }
        if( candidates.isEmpty() && !generic.isEmpty()){
            // add generic entries if needed
            for(ServiceExtension serviceExtension : generic) {
                try {
                    Map<String, Serializable> connectionParameters = serviceExtension.createParams(targetUrl);
                    if (connectionParameters != null) {
                        IService service = serviceExtension.createService(null, connectionParameters);
                        CatalogImpl.runInterceptor(service, ServiceInterceptor.CREATED_ID);
                        candidates.add(service);
    //                    List<IService> service = createService(connectionParameters);
    //                    if (service != null && !service.isEmpty()) {                    
    //                        for( IService created : service ){

View Full Code Here

            }
            try {
                // Attempt to construct a service, and add to the list if available.
                
                // Put a break point here to watch every serviceExtension try and connect
                IService service = serviceExtension.createService(null, connectionParameters);
                if (service != null) {
                    CatalogImpl.runInterceptor(service, ServiceInterceptor.CREATED_ID);
                    services.add(service);                    
                }
            } catch (Throwable deadService) {
                CatalogPlugin.log(name + " could not create service", deadService); //$NON-NLS-1$
            }
        }
        if( services.isEmpty()){
            for( ServiceExtension serviceExtension : CatalogPlugin.getDefault().getServiceExtensions() ) {
                String name = serviceExtension.getClass().getName();
                if( !isGeneric(serviceExtension)){
                    continue; // only generic for this pass
                }
                try {
                    // Attempt to construct a service, and add to the list if available.
                    IService service = serviceExtension.createService(null, connectionParameters);
                    if (service != null) {
                        CatalogImpl.runInterceptor(service, ServiceInterceptor.CREATED_ID);
                        services.add(service);
                    }
                } catch (Throwable deadService) {

View Full Code Here

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

org.eclipse.core.runtime.NullProgressMonitor

org.eclipse.core.runtime.SubProgressMonitor

org.locationtech.udig.catalog.csw.CswResource$CswWFSResource

org.locationtech.udig.catalog.csw.CswResource$CswWMSResource

org.locationtech.udig.catalog.geotools.data.GeoToolsDataStoreServiceTest

org.locationtech.udig.catalog.google.GoogleResource$GoogleWFSResource

org.locationtech.udig.catalog.google.GoogleResource$GoogleWMSResource

org.locationtech.udig.catalog.internal.CatalogImpl

org.locationtech.udig.catalog.internal.db2.ui.DB2WizardPage

org.locationtech.udig.catalog.internal.geotiff.GeoTiffGeoResourceImpl

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