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

            }


            // usually only returns 1 service but it may be that multiple
            // Services know how to interpret the URL
            List<IService> services = CatalogPlugin.getDefault().getServiceFactory().createService(url);
            IService found = null;
            progressMonitor.worked(1);


            // find the service you want
            for (IService service : services) {
                // determine if the service is the type you are expecting;

View Full Code Here

    public List<IService> getResources( IProgressMonitor monitor ) throws Exception {
        if (!isPageComplete())
            return null;


        DB2ServiceExtension creator = new DB2ServiceExtension();
        IService service = creator.createService(null, getParams());
        service.getInfo(monitor); // load


        List<IService> servers = new ArrayList<IService>();
        servers.add(service);


        /*

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        URL url = file.toURI().toURL();
        
        IProgressMonitor monitor = ProgressManager.instance().get();
        
        IRepository local = CatalogPlugin.getDefault().getLocal();
        IService service = local.acquire( url, monitor );        
    }

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    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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        //ensure the service was created
        assertNotNull(services);
        assertEquals(1, services.size() );
        
        //ensure the right type of service was created
        IService service = services.get(0);
        assertNotNull( service );
        
        ICatalog catalog = CatalogPlugin.getDefault().getLocalCatalog();
        catalog.add( service ); // we can now find this service!
        
        List<IResolve> found = catalog.search("csv",null, null );
        assertEquals( 2, found.size() );
        
        //get all the resources from the service
        List<? extends IGeoResource> resources = service.resources(null);
        assertNotNull(resources);
        assertEquals(resources.size(),1);
        
        CSV csv = null;
        for (IGeoResource resource : resources) {

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    private void addItemData( Collection<IService> services, Object data ) {
        if (data instanceof WMTWizardTreeItemData) {
            WMTWizardTreeItemData itemData = (WMTWizardTreeItemData) data;


            IService service = itemData.getService();


            if (service != null) {
                services.add(service);
            }
        }

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        URL location = new URL(url);
        
        WWServiceExtension creator = new WWServiceExtension();


        Map<String, Serializable> params = creator.createParams(location);
        IService service = creator.createService(location, params);
        service.getInfo(monitor); // load it


        List<IService> servers = new ArrayList<IService>();
        servers.add(service);


        /*

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     */
    public boolean leavingPage() {  
        Collection<IService> services = getServices();
        
        for (IService service : services) {
            final IService runService = service;
            
            try {
                getContainer().run(false, true, 
                        new IRunnableWithProgress(){


                            public void run(IProgressMonitor monitor) 
                                    throws InvocationTargetException, InterruptedException {
                                monitor.beginTask(Messages.Wizard_WW_Connecting, IProgressMonitor.UNKNOWN);
                
                                // try to load the file
                                try {
                                    runService.members(monitor);
                                } catch (IOException e) {
                                    throw (InvocationTargetException) new InvocationTargetException(e, e.getLocalizedMessage());
                                    
                                }

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        URL location = new URL(url);
        
        WMSCServiceExtension creator = new WMSCServiceExtension();


        Map<String, Serializable> params = creator.createParams(location);
        IService service = creator.createService(location, params);
        service.getInfo(monitor); // load it


        List<IService> servers = new ArrayList<IService>();
        servers.add(service);


        /*

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        WWServiceExtension serviceExtension = new WWServiceExtension();
        
        URL url = WWControl.class.getResource("DemisWorldMap.xml"); //$NON-NLS-1$
        Map<String, Serializable> params =  serviceExtension.createParams(url); 
                
        IService service = serviceExtension.createService(url, params);
        
        return service;
    }

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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