Source Code Cross Referenced for LayerFactoryImpl.java in  » GIS » udig-1.1 » net » refractions » udig » project » internal » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » udig 1.1 » net.refractions.udig.project.internal.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * <copyright>
003:         * </copyright>
004:         *
005:         * $Id: LayerFactoryImpl.java 25248 2007-04-22 22:00:21Z jeichar $
006:         */package net.refractions.udig.project.internal.impl;
007:
008:        import java.awt.Color;
009:        import java.io.IOException;
010:        import java.util.Iterator;
011:        import java.util.LinkedList;
012:        import java.util.List;
013:
014:        import net.refractions.udig.catalog.CatalogPlugin;
015:        import net.refractions.udig.catalog.IGeoResource;
016:        import net.refractions.udig.catalog.IResolve;
017:        import net.refractions.udig.catalog.IService;
018:        import net.refractions.udig.core.internal.ExtensionPointList;
019:        import net.refractions.udig.project.interceptor.LayerInterceptor;
020:        import net.refractions.udig.project.internal.Layer;
021:        import net.refractions.udig.project.internal.LayerFactory;
022:        import net.refractions.udig.project.internal.Map;
023:        import net.refractions.udig.project.internal.ProjectFactory;
024:        import net.refractions.udig.project.internal.ProjectPackage;
025:        import net.refractions.udig.project.internal.ProjectPlugin;
026:        import net.refractions.udig.ui.ProgressManager;
027:        import net.refractions.udig.ui.palette.ColourScheme;
028:
029:        import org.eclipse.core.runtime.CoreException;
030:        import org.eclipse.core.runtime.IConfigurationElement;
031:        import org.eclipse.core.runtime.NullProgressMonitor;
032:        import org.eclipse.emf.common.notify.Notification;
033:        import org.eclipse.emf.common.notify.NotificationChain;
034:        import org.eclipse.emf.common.util.EList;
035:        import org.eclipse.emf.ecore.EClass;
036:        import org.eclipse.emf.ecore.EObject;
037:        import org.eclipse.emf.ecore.EStructuralFeature;
038:        import org.eclipse.emf.ecore.InternalEObject;
039:        import org.eclipse.emf.ecore.impl.ENotificationImpl;
040:        import org.eclipse.emf.ecore.impl.EObjectImpl;
041:        import org.eclipse.emf.ecore.util.EDataTypeUniqueEList;
042:        import org.eclipse.emf.ecore.util.EcoreUtil;
043:
044:        /**
045:         * <!-- begin-user-doc --> An implementation of the model object '<em><b>Layer Factory</b></em>'.
046:         * <!-- end-user-doc -->
047:         * <p>
048:         * The following features are implemented:
049:         * <ul>
050:         *   <li>{@link net.refractions.udig.project.internal.impl.LayerFactoryImpl#getMap <em>Map</em>}</li>
051:         * </ul>
052:         * </p>
053:         *
054:         * @generated
055:         */
056:        public class LayerFactoryImpl extends EObjectImpl implements 
057:                LayerFactory {
058:            /**
059:             * <!-- begin-user-doc --> <!-- end-user-doc -->
060:             * 
061:             * @generated NOT
062:             */
063:            public static final String copyright = "uDig - User Friendly Desktop Internet GIS client http://udig.refractions.net (C) 2004, Refractions Research Inc. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; version 2.1 of the License. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details."; //$NON-NLS-1$
064:
065:            /**
066:             * <!-- begin-user-doc --> <!-- end-user-doc -->
067:             * @generated
068:             */
069:            protected LayerFactoryImpl() {
070:                super ();
071:            }
072:
073:            /**
074:             * <!-- begin-user-doc --> <!-- end-user-doc -->
075:             * @generated
076:             */
077:            protected EClass eStaticClass() {
078:                return ProjectPackage.eINSTANCE.getLayerFactory();
079:            }
080:
081:            /**
082:             * <!-- begin-user-doc --> <!-- end-user-doc -->
083:             * @generated
084:             */
085:            public Map getMap() {
086:                if (eContainerFeatureID != ProjectPackage.LAYER_FACTORY__MAP)
087:                    return null;
088:                return (Map) eContainer;
089:            }
090:
091:            /**
092:             * <!-- begin-user-doc --> <!-- end-user-doc -->
093:             * @generated
094:             */
095:            public void setMap(Map newMap) {
096:                if (newMap != eContainer
097:                        || (eContainerFeatureID != ProjectPackage.LAYER_FACTORY__MAP && newMap != null)) {
098:                    if (EcoreUtil.isAncestor(this , (EObject) newMap))
099:                        throw new IllegalArgumentException(
100:                                "Recursive containment not allowed for " + toString()); //$NON-NLS-1$
101:                    NotificationChain msgs = null;
102:                    if (eContainer != null)
103:                        msgs = eBasicRemoveFromContainer(msgs);
104:                    if (newMap != null)
105:                        msgs = ((InternalEObject) newMap).eInverseAdd(this ,
106:                                ProjectPackage.MAP__LAYER_FACTORY, Map.class,
107:                                msgs);
108:                    msgs = eBasicSetContainer((InternalEObject) newMap,
109:                            ProjectPackage.LAYER_FACTORY__MAP, msgs);
110:                    if (msgs != null)
111:                        msgs.dispatch();
112:                } else if (eNotificationRequired())
113:                    eNotify(new ENotificationImpl(this , Notification.SET,
114:                            ProjectPackage.LAYER_FACTORY__MAP, newMap, newMap));
115:            }
116:
117:            /**
118:             * <!-- begin-user-doc --> <!-- end-user-doc -->
119:             * @generated
120:             */
121:            public NotificationChain eInverseAdd(InternalEObject otherEnd,
122:                    int featureID, Class baseClass, NotificationChain msgs) {
123:                if (featureID >= 0) {
124:                    switch (eDerivedStructuralFeatureID(featureID, baseClass)) {
125:                    case ProjectPackage.LAYER_FACTORY__MAP:
126:                        if (eContainer != null)
127:                            msgs = eBasicRemoveFromContainer(msgs);
128:                        return eBasicSetContainer(otherEnd,
129:                                ProjectPackage.LAYER_FACTORY__MAP, msgs);
130:                    default:
131:                        return eDynamicInverseAdd(otherEnd, featureID,
132:                                baseClass, msgs);
133:                    }
134:                }
135:                if (eContainer != null)
136:                    msgs = eBasicRemoveFromContainer(msgs);
137:                return eBasicSetContainer(otherEnd, featureID, msgs);
138:            }
139:
140:            /**
141:             * <!-- begin-user-doc --> <!-- end-user-doc -->
142:             * @generated
143:             */
144:            public NotificationChain eInverseRemove(InternalEObject otherEnd,
145:                    int featureID, Class baseClass, NotificationChain msgs) {
146:                if (featureID >= 0) {
147:                    switch (eDerivedStructuralFeatureID(featureID, baseClass)) {
148:                    case ProjectPackage.LAYER_FACTORY__MAP:
149:                        return eBasicSetContainer(null,
150:                                ProjectPackage.LAYER_FACTORY__MAP, msgs);
151:                    default:
152:                        return eDynamicInverseRemove(otherEnd, featureID,
153:                                baseClass, msgs);
154:                    }
155:                }
156:                return eBasicSetContainer(null, featureID, msgs);
157:            }
158:
159:            /**
160:             * <!-- begin-user-doc --> <!-- end-user-doc -->
161:             * @generated
162:             */
163:            public NotificationChain eBasicRemoveFromContainer(
164:                    NotificationChain msgs) {
165:                if (eContainerFeatureID >= 0) {
166:                    switch (eContainerFeatureID) {
167:                    case ProjectPackage.LAYER_FACTORY__MAP:
168:                        return eContainer.eInverseRemove(this ,
169:                                ProjectPackage.MAP__LAYER_FACTORY, Map.class,
170:                                msgs);
171:                    default:
172:                        return eDynamicBasicRemoveFromContainer(msgs);
173:                    }
174:                }
175:                return eContainer.eInverseRemove(this , EOPPOSITE_FEATURE_BASE
176:                        - eContainerFeatureID, null, msgs);
177:            }
178:
179:            /**
180:             * <!-- begin-user-doc --> <!-- end-user-doc -->
181:             * @generated
182:             */
183:            public Object eGet(EStructuralFeature eFeature, boolean resolve) {
184:                switch (eDerivedStructuralFeatureID(eFeature)) {
185:                case ProjectPackage.LAYER_FACTORY__MAP:
186:                    return getMap();
187:                }
188:                return eDynamicGet(eFeature, resolve);
189:            }
190:
191:            /**
192:             * <!-- begin-user-doc --> <!-- end-user-doc -->
193:             * @generated
194:             */
195:            public void eSet(EStructuralFeature eFeature, Object newValue) {
196:                switch (eDerivedStructuralFeatureID(eFeature)) {
197:                case ProjectPackage.LAYER_FACTORY__MAP:
198:                    setMap((Map) newValue);
199:                    return;
200:                }
201:                eDynamicSet(eFeature, newValue);
202:            }
203:
204:            /**
205:             * <!-- begin-user-doc --> <!-- end-user-doc -->
206:             * @generated
207:             */
208:            public void eUnset(EStructuralFeature eFeature) {
209:                switch (eDerivedStructuralFeatureID(eFeature)) {
210:                case ProjectPackage.LAYER_FACTORY__MAP:
211:                    setMap((Map) null);
212:                    return;
213:                }
214:                eDynamicUnset(eFeature);
215:            }
216:
217:            /**
218:             * <!-- begin-user-doc --> <!-- end-user-doc -->
219:             * @generated
220:             */
221:            public boolean eIsSet(EStructuralFeature eFeature) {
222:                switch (eDerivedStructuralFeatureID(eFeature)) {
223:                case ProjectPackage.LAYER_FACTORY__MAP:
224:                    return getMap() != null;
225:                }
226:                return eDynamicIsSet(eFeature);
227:            }
228:
229:            /**
230:             * Creates a list of {@linkplain Layer}objects from the provided selection.
231:             * 
232:             * @param selection A selection of CatalogEntries obtained from a {@linkplain CatalogTreeViewer}
233:             *        object.
234:             * @return a list of {@linkplain Layer}objects from the provided selection.
235:             * @throws IOException
236:             */
237:            @SuppressWarnings("unchecked")
238:            public List<Layer> getLayers(List selection) throws IOException {
239:                List<Layer> layers = new LinkedList<Layer>();
240:                for (Iterator<Object> iter = selection.iterator(); iter
241:                        .hasNext();) {
242:                    Object obj = iter.next();
243:                    if (obj instanceof  IService) {
244:                        layers.addAll(getLayers((IService) obj));
245:                    } else if (obj instanceof  IGeoResource) {
246:                        IGeoResource entry = (IGeoResource) obj;
247:                        Layer ref = createLayer(entry);
248:
249:                        if (ref != null)
250:                            layers.add(ref);
251:                    }
252:                }
253:                return layers;
254:            }
255:
256:            public List<Layer> getLayers(IService service) throws IOException {
257:                Layer ref = null;
258:                List<Layer> layers = new LinkedList<Layer>();
259:
260:                Iterator<? extends IGeoResource> rentryIter = service.members(
261:                        null).iterator();
262:                while (rentryIter.hasNext()) {
263:                    IGeoResource entry = rentryIter.next();
264:
265:                    ref = createLayer(entry);
266:
267:                    if (ref != null)
268:                        layers.add(ref);
269:                }
270:                return layers;
271:            }
272:
273:            //    /**
274:            //     * Creates a LayerRef for WMSs.
275:            //     * 
276:            //     * @param service the registry entry parent of the CatalogEntry that the Layer ref references.
277:            //     * @param geoResource the CatalogEntry that the Ref refers to.
278:            //     * @return a LayerRef for DataStores.
279:            //     * @throws IOException
280:            //     */
281:            //    protected Layer createWMSLayer( IService service, IGeoResource geoResource ) throws IOException {
282:            //
283:            //        org.geotools.data.ows.Layer wmslayer = null;
284:            //
285:            //        IGeoResourceInfo info = geoResource.resolve(IGeoResourceInfo.class, null);
286:            //        String layerName = info.getName();
287:            //        if (layerName == null || layerName.length() == 0) {
288:            //            throw new IllegalArgumentException("Cannot determine name of resource."); //$NON-NLS-1$
289:            //        }
290:            //
291:            //        WebMapServer wms = service.resolve(WebMapServer.class, null);
292:            //        if (wms == null) {
293:            //            throw new IOException("Cannot communicate with Web Map Server."); //$NON-NLS-1$
294:            //        }
295:            //        org.geotools.data.ows.Layer[] layers = WMSUtils.getNamedLayers(wms.getCapabilities());
296:            //        for( org.geotools.data.ows.Layer layer : layers ) {
297:            //            String targetName = layer.getName();
298:            //            if (targetName.equals(layerName)) {
299:            //                wmslayer = layer;
300:            //                break;
301:            //            }
302:            //        }
303:            //
304:            //        if (wmslayer == null) {
305:            //            throw new IOException(
306:            //                    "This resource (" + layerName + ") is not a part of the service. This is likely caused by inconsistent data returned by a search."); //$NON-NLS-1$//$NON-NLS-2$
307:            //        }
308:            //        
309:            //        Layer layer = ProjectFactory.eINSTANCE.createLayer();
310:            //
311:            //        layer.setID(geoResource.getIdentifier());
312:            //
313:            //        return layer;
314:            //    }
315:
316:            /**
317:             * Returns a LayerFactory object
318:             * 
319:             * @return a LayerFactory object.
320:             */
321:            public static LayerFactoryImpl create() {
322:                return new LayerFactoryImpl();
323:            }
324:
325:            /**
326:             * Creates a layer from a service and a resource. The layer is represented the data in resource.
327:             * May return null if it cannot resolve the service.
328:             * 
329:             * @param service
330:             * @param resource
331:             * @return
332:             * @throws IOException
333:             */
334:            @SuppressWarnings("unchecked")
335:            public Layer createLayer(IGeoResource resource) throws IOException {
336:                IService service = resource.service(ProgressManager.instance()
337:                        .get());
338:
339:                if (service == null) {
340:                    return null;
341:                }
342:                //check that the service is part of catalog... If not add
343:                if (CatalogPlugin.getDefault().getLocalCatalog().getById(
344:                        IService.class, service.getIdentifier(),
345:                        new NullProgressMonitor()) == null) {
346:                    CatalogPlugin.getDefault().getLocalCatalog().add(
347:                            resource.service(null));
348:                }
349:
350:                Layer layer = ProjectFactory.eINSTANCE.createLayer();
351:                layer.setID(resource.getIdentifier());
352:
353:                if (layer == null) {
354:                    throw new IOException(
355:                            "Unable to create layer from resource '" + resource.getIdentifier() + "'"); //$NON-NLS-1$ //$NON-NLS-2$
356:                }
357:
358:                // process the style content extension point to initially populate
359:                // the style blackboard with style info
360:                // TODO: the style objects need access to preference system
361:                final Layer theLayer = layer;
362:
363:                List<IResolve> resolves = CatalogPlugin.getDefault()
364:                        .getLocalCatalog().find(layer.getID(),
365:                                ProgressManager.instance().get());
366:                EList resources = new EDataTypeUniqueEList(IGeoResource.class,
367:                        this , ProjectPackage.LAYER__GEO_RESOURCES);
368:                LayerResource preferredResource = null;
369:                for (IResolve resolve : resolves) {
370:                    if (resolve instanceof  IGeoResource) {
371:                        LayerResource layerResource = new LayerResource(
372:                                (LayerImpl) layer, (IGeoResource) resolve);
373:                        resources.add(layerResource);
374:                        if (resolve == resource)
375:                            preferredResource = layerResource;
376:                    }
377:                }
378:
379:                ((LayerImpl) layer).geoResources = resources;
380:                layer.setGeoResource(preferredResource);
381:
382:                //determine the default colour
383:                ColourScheme colourScheme = getMap().getColourScheme();
384:                Color colour = colourScheme
385:                        .addItem(theLayer.getID().toString());
386:                theLayer.setDefaultColor(colour);
387:
388:                runLayerCreatedInterceptor(layer);
389:
390:                return layer;
391:            }
392:
393:            private void runLayerCreatedInterceptor(Layer layer) {
394:                List<IConfigurationElement> list = ExtensionPointList
395:                        .getExtensionPointList(LayerInterceptor.EXTENSION_ID);
396:                for (IConfigurationElement element : list) {
397:                    if (element.getName().equals(LayerInterceptor.CREATED_ID)) {
398:                        String attribute = element.getAttribute("name"); //$NON-NLS-1$
399:                        try {
400:                            LayerInterceptor interceptor = (LayerInterceptor) element
401:                                    .createExecutableExtension("class"); //$NON-NLS-1$
402:                            interceptor.run(layer);
403:                        } catch (CoreException e) {
404:                            ProjectPlugin
405:                                    .log(
406:                                            "Error creating class: " + element.getAttribute("class") + " part of layer interceptor: " + attribute, e); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
407:                        } catch (Throwable t) {
408:                            ProjectPlugin
409:                                    .log(
410:                                            "error running interceptor: " + attribute, t); //$NON-NLS-1$
411:                        }
412:                    }
413:                }
414:            }
415:
416:        } // LayerFactoryImpl
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