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(service == null){


          List<IService> services = CatalogPlugin.getDefault().getServiceFactory().createService(url);
          Iterator<IService> srv = services.iterator();
          while(srv.hasNext()){
            IService s = srv.next();
            if(s.canResolve(WFSDataStore.class)){
              service = s;
            }
          }


            if(service == null){

View Full Code Here

                }
            }
        }
        ID id = shapefile.getID();
    IServiceFactory serviceFactory = CatalogPlugin.getDefault().getServiceFactory();
    IService newService = serviceFactory.createService(parametersMap).iterator().next();
    ICatalog localCatalog = CatalogPlugin.getDefault().getLocalCatalog();
    localCatalog.replace(id, newService );
        return null;
    }

View Full Code Here

    protected abstract boolean mutable();


    @Test(timeout = BLOCK)
    public void testAddService() {
        if (mutable()) {
            IService service = new IService(){


                public <T> T resolve( Class<T> adaptee, IProgressMonitor monitor )
                        throws IOException {
                    return null;
                }


                public List< ? extends IGeoResource> resources( IProgressMonitor monitor )
                        throws IOException {
                    return null;
                }


                public Map<String, Serializable> getConnectionParams() {
                    return null;
                }


                public <T> boolean canResolve( Class<T> adaptee ) {
                    return false;
                }


                public Status getStatus() {
                    return null;
                }


                public Throwable getMessage() {
                    return null;
                }


                protected IServiceInfo createInfo( IProgressMonitor monitor ) throws IOException {
                    return null;
                }
                public URL getIdentifier() {
                    try {
                        return new URL("http://localhost/udig-tests"); //$NON-NLS-1$
                    } catch (MalformedURLException e) {
                        fail(e.toString());
                        return null;
                    }
                }


            };
            getResolve().add(service);
            List<IResolve> services = getResolve().find(service.getIdentifier(), null);
            assertNotNull("should return a value", services); //$NON-NLS-1$
            assertEquals("Should only return one value", 1, services.size()); //$NON-NLS-1$
            assertTrue("The Service returned is not my service :(", services.contains(service)); //$NON-NLS-1$
        }
    }

View Full Code Here

    }


    @Test(timeout = BLOCK)
    public void testRemoveService() {
        if (mutable()) {
            IService service = new IService(){


                public <T> T resolve( Class<T> adaptee, IProgressMonitor monitor )
                        throws IOException {
                    return null;
                }


                public List< ? extends IGeoResource> resources( IProgressMonitor monitor )
                        throws IOException {
                    return null;
                }


                public Map<String, Serializable> getConnectionParams() {
                    return null;
                }


                public <T> boolean canResolve( Class<T> adaptee ) {
                    return false;
                }


                public Status getStatus() {
                    return null;
                }


                protected IServiceInfo createInfo( IProgressMonitor monitor ) throws IOException {
                    return null;
                }
                public Throwable getMessage() {
                    return null;
                }


                public URL getIdentifier() {
                    try {
                        return new URL("http://localhost/udig-tests"); //$NON-NLS-1$
                    } catch (MalformedURLException e) {
                        fail(e.toString());
                        return null;
                    }
                }


            };
            List<IResolve> services = getResolve().find(service.getIdentifier(), null);
            if (!services.contains(service))
                getResolve().add(service);


            getResolve().remove(service);
            services = getResolve().find(service.getIdentifier(), null);
            assertFalse("Shouldn't contain the service", services.contains(service)); //$NON-NLS-1$
        }
    }

View Full Code Here

    }


    @Test(timeout = BLOCK)
    public void testReplaceService() {
        if (mutable()) {
            IService service1 = new IService(){


                public <T> T resolve( Class<T> adaptee, IProgressMonitor monitor )
                        throws IOException {
                    return null;
                }


                public List< ? extends IGeoResource> resources( IProgressMonitor monitor )
                        throws IOException {
                    return null;
                }


                public Map<String, Serializable> getConnectionParams() {
                    return null;
                }


                public <T> boolean canResolve( Class<T> adaptee ) {
                    return false;
                }


                protected IServiceInfo createInfo( IProgressMonitor monitor ) throws IOException {
                    return null;
                }
                public Status getStatus() {
                    return null;
                }


                public Throwable getMessage() {
                    return null;
                }


                public URL getIdentifier() {
                    try {
                        return new URL("http://localhost/udig-tests/1"); //$NON-NLS-1$
                    } catch (MalformedURLException e) {
                        fail(e.toString());
                        return null;
                    }
                }


            };
            IService service2 = new IService(){


                public <T> T resolve( Class<T> adaptee, IProgressMonitor monitor )
                        throws IOException {
                    return null;
                }


                public List< ? extends IGeoResource> resources( IProgressMonitor monitor )
                        throws IOException {
                    return null;
                }


                public Map<String, Serializable> getConnectionParams() {
                    return null;
                }


                protected IServiceInfo createInfo( IProgressMonitor monitor ) throws IOException {
                    return null;
                }
                public <T> boolean canResolve( Class<T> adaptee ) {
                    return false;
                }


                public Status getStatus() {
                    return null;
                }


                public Throwable getMessage() {
                    return null;
                }


                public URL getIdentifier() {
                    try {
                        return new URL("http://localhost/udig-tests/2"); //$NON-NLS-1$
                    } catch (MalformedURLException e) {
                        fail(e.toString());
                        return null;
                    }
                }


            };
            getResolve().add(service1);
            getResolve().replace(service1.getID(), service2);
            List<IResolve> services = getResolve().find(service2.getIdentifier(), null);
            assertFalse("Shouldn't contain the service", services.contains(service1)); //$NON-NLS-1$
            assertTrue("Should contain the service", services.contains(service2)); //$NON-NLS-1$
        }
    }

View Full Code Here

    
    addShpService(url,resources,monitor);
  }
  private void addAlertsMapgraphic(IProgressMonitor monitor,
      List<IGeoResource> resources) throws IOException {
    IService service = CatalogPlugin.getDefault().getLocalCatalog().acquire(MapGraphicService.SERVICE_URL,monitor);
    String desiredIdString = MapGraphicService.SERVICE_URL+"#"+ShowAlertsMapGraphic.EXTENSION_ID;
    for (IGeoResource resource : service.resources(null)) {
      String idString = resource.getID().toString();
      if(idString.equals(desiredIdString)) {
        resources.add(resource);
        return;
      }

View Full Code Here

    }
    throw new IllegalStateException("Unable to find " + desiredIdString + " mapgraphic");
  }
  
  private void addShpService(URL url,List<IGeoResource> resources, IProgressMonitor monitor) throws IOException {
    IService service = CatalogPlugin.getDefault().getLocalCatalog().acquire(url,monitor);
    
    resources.addAll(service.resources(monitor));
  }

View Full Code Here

            }


        };
        getResolve().addCatalogListener(listner);


        IService service = new IService(){


            public <T> T resolve( Class<T> adaptee, IProgressMonitor monitor ) throws IOException {
                return null;
            }

View Full Code Here

                    if (monitor.isCanceled()) {
                        return Status.CANCEL_STATUS;
                    }


                    try {
                        IService service = resource.service(monitor);
                        CatalogPlugin.getDefault().getLocalCatalog().add(service);


                        Layer layer = factory.createLayer(resource);
                        if (layer != null) {
                            layers.add(layer);

View Full Code Here

    }


    private List<IGeoResource> handleResolve( IResolve resolve, IProgressMonitor monitor )
            throws IOException {
        if( resolve instanceof IService ){
            IService service = (IService) resolve;
            resources(service.resources(monitor));
        }
        return Collections.emptyList();
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

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

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.