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

        }


        if (prop instanceof Filter || prop instanceof Query) {
            try {
                IGeoResource geoResource = layer.findGeoResource(FeatureSource.class);
                IService service = geoResource.service(ProgressManager.instance().get());
                
                if (service != null) {
                    DataStore ds = service.resolve(DataStore.class,
                            ProgressManager.instance().get());
                    if (ds == null){
                        return resource; // not a datastore give up!
                    }
                    String typeName = resource.getSchema().getTypeName();

View Full Code Here

     */
    public Image decorateImage( Image image, Object element ) {
        if (!(element instanceof IService)) {
            return null;
        }
        IService service = (IService) element;
        if (image == null) {
            image = baseIcon(service);
        }
        switch( service.getStatus() ) {
        case CONNECTED:
            return overlayCache.applyStatus(image, CatalogUIPlugin.getDefault()
                    .getImageDescriptor(ImageConstants.CONNECTED_OVR));


        case NOTCONNECTED:

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            IGeoResource resource = (IGeoResource) resolve;
            boolean isFeature = resource.canResolve(FeatureSource.class);
            String iconId = iconInternalResource( resource.getID(), isFeature );
            return CatalogUIPlugin.getDefault().getImage( iconId );
        } else if (resolve instanceof IService) {
            IService service = (IService) resolve;
            boolean isFeature = service.canResolve(DataStore.class);
            
            String iconId = iconInternalService( service.getID(), isFeature );
            return CatalogUIPlugin.getDefault().getImage( iconId );
        } else if (resolve instanceof ICatalog) {
            return CatalogUIPlugin.getDefault().getImage(ISharedImages.CATALOG_OBJ);
        }
        return CatalogUIPlugin.getDefault().getImage(ISharedImages.RESOURCE_OBJ);

View Full Code Here

    @Ignore
    @Test
    public void testSwitchStyle() throws Exception {
        LayerImpl layer = MapTests.createLayer(null, new RendererCreatorTestObjForSingleRenderer(), null);
        layer.setName("Layer1"); //$NON-NLS-1$
        IService createService = DummyService.createService(new URL("http://dummy77"), Collections.emptyList(), //$NON-NLS-1$ 
                        Collections.singletonList(Arrays.asList(new Object[]{new RendererCreatorTestObjForMulitRenderer()})));
        layer.getGeoResources().add(createService.resources(null).get(0));
        
        StyleBlackboard bb = layer.getStyleBlackboard();
        
        bb.put(SingleRendererStyleContent.ID, new SingleRendererStyleContent());

View Full Code Here

                        URL url = URLIterator.next();


                        try {
                            availableServices = catalog.constructServices(url, monitor);
                            if (!availableServices.isEmpty()) {
                                IService service = availableServices.iterator().next();
                                resourceIds.add(service.getIdentifier());
                                services.add(service);// add the first service
                            }
                        } catch (IOException e) {
                            throw (RuntimeException) new RuntimeException().initCause(e);
                        } finally {
                            List<IService> members = catalog.checkMembers(availableServices);


                            for( Iterator<IService> iterator = members.iterator(); iterator
                                    .hasNext(); ) {
                                IService service = iterator.next();


                                if (service.equals(service)) continue;


                                service.dispose(new SubProgressMonitor(monitor, 10));
                            }
                            monitor.done();
                        }


                    }

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                }
                else if (element instanceof IResolve ){
                    IResolve resolve = (IResolve) element;
                    if( resolve.canResolve( IService.class)){
                        try {
                            IService service = resolve.resolve( IService.class, new NullProgressMonitor() );
                            return new StructuredSelection( service );
                        } catch (IOException e) {
                            return StructuredSelection.EMPTY;
                        }
                    }
                }
                // check IAdaptable incase ILayer or another selection wants to play
                if( element instanceof IAdaptable ){
                    IAdaptable adaptable = (IAdaptable) element;
                    IService service = (IService) adaptable.getAdapter(IService.class);
                    if( service != null ){
                        return new StructuredSelection( service );
                    }
                    IGeoResource resource = (IGeoResource) adaptable.getAdapter(IGeoResource.class);
                    if( resource != null ){

View Full Code Here

            }
            return StructuredSelection.EMPTY; // no dice!
        }
        private ISelection toServiceSelection(IGeoResource resource) {
            try {
                IService service = resource.service( new NullProgressMonitor() );
                return new StructuredSelection( service );
            } catch (IOException e) {
                return StructuredSelection.EMPTY;
            }
        }

View Full Code Here

                      title = id.labelResource();
                    }
                    return title;


                } else if (resolve instanceof IService) {
                    IService service = (IService) resolve;
                    ID id = service.getID();


                    String title = service.getTitle();
//                    if (title == null) {
//                        IServiceInfo info = service.getInfo(new NullProgressMonitor());
//                        if (info != null) {
//                            title = info.getTitle();
//                        }

View Full Code Here


            ListViewer listViewer = new ListViewer(root);
            listViewer.setLabelProvider(new LabelProvider(){
                @Override
                public String getText( Object element ) {
                    IService service = (IService) element;
                    return service.getIdentifier().toString();
                }
            });
            listViewer.setContentProvider(new ArrayContentProvider());
            listViewer.setInput(errors.keySet().toArray());


            final Text text = new Text(root, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL
                    | SWT.SCROLL_LINE);


            FormData layoutData = new FormData();
            layoutData.top = new FormAttachment(0);
            layoutData.left = new FormAttachment(0);
            label.setLayoutData(layoutData);


            layoutData = new FormData();
            layoutData.top = new FormAttachment(label, 2, SWT.BOTTOM);
            layoutData.left = new FormAttachment(0);
            layoutData.right = new FormAttachment(100);
            layoutData.bottom = new FormAttachment(50);
            listViewer.getList().setLayoutData(layoutData);


            layoutData = new FormData();
            layoutData.top = new FormAttachment(listViewer.getList(), 2, SWT.BOTTOM);
            layoutData.left = new FormAttachment(0);
            layoutData.right = new FormAttachment(100);
            layoutData.bottom = new FormAttachment(100);
            text.setLayoutData(layoutData);


            listViewer.addSelectionChangedListener(new ISelectionChangedListener(){


                public void selectionChanged( SelectionChangedEvent event ) {
                    IStructuredSelection selection = (IStructuredSelection) event.getSelection();
                    if (selection == null || selection.isEmpty())
                        return;


                    IService service = (IService) selection.getFirstElement();
                    Throwable t = errors.get(service);


                    ByteArrayOutputStream out = new ByteArrayOutputStream();
                    t.printStackTrace(new PrintStream(out));
                    text.setText(new String(out.toByteArray()));

View Full Code Here

                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);

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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