Source Code Cross Referenced for MetaSiteServiceBean.java in  » Groupware » LibreSource » org » libresource » metasite » ejb » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Groupware » LibreSource » org.libresource.metasite.ejb 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * LibreSource
003:         * Copyright (C) 2004-2008 Artenum SARL / INRIA
004:         * http://www.libresource.org - contact@artenum.com
005:         *
006:         * This file is part of the LibreSource software, 
007:         * which can be used and distributed under license conditions.
008:         * The license conditions are provided in the LICENSE.TXT file 
009:         * at the root path of the packaging that enclose this file. 
010:         * More information can be found at 
011:         * - http://dev.libresource.org/home/license
012:         *
013:         * Initial authors :
014:         *
015:         * Guillaume Bort / INRIA
016:         * Francois Charoy / Universite Nancy 2
017:         * Julien Forest / Artenum
018:         * Claude Godart / Universite Henry Poincare
019:         * Florent Jouille / INRIA
020:         * Sebastien Jourdain / INRIA / Artenum
021:         * Yves Lerumeur / Artenum
022:         * Pascal Molli / Universite Henry Poincare
023:         * Gerald Oster / INRIA
024:         * Mariarosa Penzi / Artenum
025:         * Gerard Sookahet / Artenum
026:         * Raphael Tani / INRIA
027:         *
028:         * Contributors :
029:         *
030:         * Stephane Bagnier / Artenum
031:         * Amadou Dia / Artenum-IUP Blois
032:         * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
033:         */package org.libresource.metasite.ejb;
034:
035:        import com.hp.hpl.jena.rdf.model.Model;
036:        import com.hp.hpl.jena.rdf.model.ModelFactory;
037:        import com.hp.hpl.jena.rdql.Query;
038:        import com.hp.hpl.jena.rdql.QueryEngine;
039:        import com.hp.hpl.jena.rdql.QueryExecution;
040:        import com.hp.hpl.jena.rdql.QueryResults;
041:        import com.hp.hpl.jena.rdql.ResultBinding;
042:
043:        import org.libresource.Libresource;
044:        import org.libresource.LibresourceException;
045:        import org.libresource.LibresourceResourceIdentifier;
046:        import org.libresource.LibresourceResourceValue;
047:        import org.libresource.LibresourceServiceBase;
048:
049:        import org.libresource.core.URIResolver;
050:        import org.libresource.core.interfaces.LibresourceCoreService;
051:
052:        import org.libresource.kernel.KernelConstants;
053:        import org.libresource.kernel.LibresourceSecurityException;
054:        import org.libresource.kernel.URINotExistException;
055:        import org.libresource.kernel.interfaces.KernelService;
056:
057:        import org.libresource.metasite.MetaSiteConstants;
058:        import org.libresource.metasite.MetaSiteServiceException;
059:        import org.libresource.metasite.ejb.model.ProjectProxyResourceValue;
060:        import org.libresource.metasite.ejb.model.SiteResourceValue;
061:        import org.libresource.metasite.interfaces.ProjectProxyResourceLocal;
062:        import org.libresource.metasite.interfaces.SiteResourceLocal;
063:        import org.libresource.metasite.util.ProjectProxyResourceUtil;
064:        import org.libresource.metasite.util.SiteResourceUtil;
065:
066:        import org.libresource.search.LibresourceIndexableContent;
067:
068:        import java.io.BufferedReader;
069:        import java.io.InputStream;
070:        import java.io.InputStreamReader;
071:
072:        import java.net.URI;
073:        import java.net.URL;
074:
075:        import java.util.Date;
076:        import java.util.Iterator;
077:
078:        /**
079:         * @libresource.service name="MetaSite" depends="Kernel,LibresourceCore"
080:         */
081:        public abstract class MetaSiteServiceBean extends
082:                LibresourceServiceBase {
083:            /**
084:             * @ejb.interface-method
085:             * @ejb.transaction type="Required"
086:             */
087:            public void createSite(URI uri, String description, String host,
088:                    long delay) throws MetaSiteServiceException,
089:                    LibresourceSecurityException {
090:                try {
091:                    KernelService kernelService = (KernelService) Libresource
092:                            .getService(KernelConstants.SERVICE);
093:
094:                    if (!kernelService.isSuperUser()) {
095:                        throw new LibresourceSecurityException(uri, "Root");
096:                    }
097:
098:                    SiteResourceLocal siteResourceLocal = SiteResourceUtil
099:                            .getLocalHome().create(description, host, delay);
100:                    kernelService.bind(siteResourceLocal
101:                            .getLibresourceResourceIdentifier(), uri, host);
102:                    siteResourceLocal.batchSynchronize();
103:                } catch (Exception e) {
104:                    ctx.setRollbackOnly();
105:                    throw new MetaSiteServiceException("Error in createSite : "
106:                            + e.getMessage(), e);
107:                }
108:            }
109:
110:            /**
111:             * @ejb.interface-method
112:             * @ejb.transaction type="Required"
113:             */
114:            public void editSite(URI uri, String description, String host,
115:                    long delay) throws MetaSiteServiceException,
116:                    URINotExistException {
117:                try {
118:                    KernelService kernelService = (KernelService) Libresource
119:                            .getService(KernelConstants.SERVICE);
120:
121:                    if (!kernelService.isSuperUser()) {
122:                        throw new LibresourceSecurityException(uri, "Root");
123:                    }
124:
125:                    LibresourceResourceIdentifier resourceIdentifier = kernelService
126:                            .lookup(uri);
127:                    SiteResourceLocal siteResourceLocal = (SiteResourceLocal) Libresource
128:                            .findResource(resourceIdentifier,
129:                                    SiteResourceLocal.class);
130:                    siteResourceLocal.setHost(host);
131:                    siteResourceLocal.setDescription(description);
132:                    siteResourceLocal.setSynchronizationDelay(delay);
133:                    siteResourceLocal.batchSynchronize();
134:
135:                    // update node
136:                    kernelService.setShortName(uri, host);
137:                    kernelService.setUpdateDate(uri, new Date());
138:
139:                    // indexation
140:                    Libresource.index(uri);
141:                } catch (URINotExistException se) {
142:                    ctx.setRollbackOnly();
143:                    throw se;
144:                } catch (Exception e) {
145:                    ctx.setRollbackOnly();
146:                    throw new MetaSiteServiceException("Error in editSite : "
147:                            + e.getMessage(), e);
148:                }
149:            }
150:
151:            /**
152:             * @ejb.interface-method
153:             * @ejb.transaction type="Supports"
154:             */
155:            public SiteResourceValue getSite(URI uri)
156:                    throws MetaSiteServiceException, URINotExistException {
157:                try {
158:                    KernelService kernelService = (KernelService) Libresource
159:                            .getService(KernelConstants.SERVICE);
160:                    LibresourceResourceIdentifier resourceIdentifier = kernelService
161:                            .lookup(uri);
162:                    SiteResourceLocal siteResourceLocal = (SiteResourceLocal) Libresource
163:                            .findResource(resourceIdentifier,
164:                                    SiteResourceLocal.class);
165:                    SiteResourceValue siteResourceValue = siteResourceLocal
166:                            .getSiteResourceValue();
167:                    siteResourceValue.setUri(kernelService.normalizeURI(uri));
168:
169:                    return siteResourceValue;
170:                } catch (URINotExistException se) {
171:                    throw se;
172:                } catch (Exception e) {
173:                    throw new MetaSiteServiceException("Error in getSite : "
174:                            + e.getMessage(), e);
175:                }
176:            }
177:
178:            /**
179:             * @ejb.interface-method
180:             * @ejb.transaction type="Supports"
181:             */
182:            public ProjectProxyResourceValue getProjectProxy(URI uri)
183:                    throws MetaSiteServiceException, URINotExistException {
184:                try {
185:                    KernelService kernelService = (KernelService) Libresource
186:                            .getService(KernelConstants.SERVICE);
187:                    LibresourceResourceIdentifier resourceIdentifier = kernelService
188:                            .lookup(uri);
189:                    ProjectProxyResourceLocal projectProxyResourceLocal = (ProjectProxyResourceLocal) Libresource
190:                            .findResource(resourceIdentifier,
191:                                    ProjectProxyResourceLocal.class);
192:                    ProjectProxyResourceValue projectProxyResourceValue = projectProxyResourceLocal
193:                            .getProjectProxyResourceValue();
194:                    projectProxyResourceValue.setUri(kernelService
195:                            .normalizeURI(uri));
196:
197:                    return projectProxyResourceValue;
198:                } catch (URINotExistException se) {
199:                    throw se;
200:                } catch (Exception e) {
201:                    throw new MetaSiteServiceException(
202:                            "Error in getProjectProxy : " + e.getMessage(), e);
203:                }
204:            }
205:
206:            /**
207:             * @ejb.interface-method
208:             * @ejb.transaction type="Supports"
209:             */
210:            public ProjectProxyResourceValue[] listProjectProxies(URI uri)
211:                    throws MetaSiteServiceException, URINotExistException {
212:                try {
213:                    KernelService kernelService = (KernelService) Libresource
214:                            .getService(KernelConstants.SERVICE);
215:                    LibresourceResourceValue[] children = kernelService
216:                            .listResourcesAt(uri, MetaSiteConstants.SERVICE,
217:                                    MetaSiteConstants.RESOURCE_PROJECT_PROXY);
218:                    ProjectProxyResourceValue[] projects = new ProjectProxyResourceValue[children.length];
219:
220:                    for (int i = 0; i < children.length; i++) {
221:                        LibresourceResourceIdentifier resourceIdentifier = kernelService
222:                                .lookup(children[i].getUri());
223:                        ProjectProxyResourceLocal projectProxyResourceLocal = (ProjectProxyResourceLocal) Libresource
224:                                .findResource(resourceIdentifier,
225:                                        ProjectProxyResourceLocal.class);
226:                        ProjectProxyResourceValue projectProxyResourceValue = projectProxyResourceLocal
227:                                .getProjectProxyResourceValue();
228:                        projectProxyResourceValue.setUri(children[i].getUri());
229:                        projects[i] = projectProxyResourceValue;
230:                    }
231:
232:                    return projects;
233:                } catch (URINotExistException se) {
234:                    throw se;
235:                } catch (Exception e) {
236:                    throw new MetaSiteServiceException(
237:                            "Error in getProjectProxy : " + e.getMessage(), e);
238:                }
239:            }
240:
241:            /**
242:             * @ejb.interface-method
243:             * @ejb.transaction type="Required"
244:             */
245:            public void synchronize(URI uri) throws MetaSiteServiceException,
246:                    URINotExistException {
247:                try {
248:                    KernelService kernelService = (KernelService) Libresource
249:                            .getService(KernelConstants.SERVICE);
250:
251:                    if (!kernelService.checkIfOwner(uri)) {
252:                        throw new LibresourceSecurityException(uri, "OWNER");
253:                    }
254:
255:                    LibresourceResourceIdentifier resourceIdentifier = kernelService
256:                            .systemLookup(kernelService
257:                                    .normalizeAbsoluteURIPath(uri));
258:                    SiteResourceLocal siteResourceLocal = (SiteResourceLocal) Libresource
259:                            .findResource(resourceIdentifier,
260:                                    SiteResourceLocal.class);
261:                    siteResourceLocal.setLastSynchronization(new Date());
262:
263:                    // first pass (delete all children)			
264:                    kernelService.systemDeleteChildren(uri);
265:
266:                    // retrieve public projects RDF
267:                    LibresourceCoreService libresourceCoreService = (LibresourceCoreService) Libresource
268:                            .getService("LibresourceCore");
269:                    URIResolver resolver = libresourceCoreService
270:                            .getUriResolver();
271:                    URL rdfUrl = new URL(resolver.resolveFeedsEndPoint(new URI(
272:                            siteResourceLocal.getHost()))
273:                            + "?publicProjects");
274:                    BufferedReader reader = new BufferedReader(
275:                            new InputStreamReader((InputStream) rdfUrl
276:                                    .getContent()));
277:
278:                    // parse the RDF
279:                    Model model = ModelFactory.createDefaultModel();
280:                    model.read(reader, "");
281:
282:                    String queryString = "SELECT ?p, ?name, ?description, ?summary WHERE (?p <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.libresource.org/rdf/project#Project>), (?p <http://www.libresource.org/rdf/project#name> ?name), (?p <http://www.libresource.org/rdf/project#description> ?description), (?p <http://www.libresource.org/rdf/project#summary> ?summary)";
283:                    Query query = new Query(queryString);
284:                    query.setSource(model);
285:
286:                    QueryExecution qe = new QueryEngine(query);
287:                    QueryResults results = qe.exec();
288:
289:                    // for each remote project i create a proxy
290:                    for (Iterator iter = results; iter.hasNext();) {
291:                        ResultBinding res = (ResultBinding) iter.next();
292:                        String projectURI = res.get("p").toString();
293:                        String projectName = res.get("name").toString();
294:                        String projectDescription = res.get("description")
295:                                .toString();
296:                        String projectSummary = res.get("summary").toString();
297:                        ProjectProxyResourceLocal proxy = ProjectProxyResourceUtil
298:                                .getLocalHome().create(projectURI, projectName,
299:                                        projectDescription, projectSummary);
300:                        URI proxyUri = new URI(uri.getPath() + "/"
301:                                + proxy.getId());
302:                        kernelService.systemCreateURI(proxyUri);
303:                        kernelService.systemCopyAcl(uri, proxyUri);
304:                        kernelService.systemBind(proxy
305:                                .getLibresourceResourceIdentifier(), proxyUri,
306:                                projectName);
307:                    }
308:
309:                    results.close();
310:
311:                    // update node
312:                    kernelService.setUpdateDate(uri, new Date());
313:                } catch (URINotExistException se) {
314:                    ctx.setRollbackOnly();
315:                    throw se;
316:                } catch (Exception e) {
317:                    ctx.setRollbackOnly();
318:                    throw new MetaSiteServiceException(
319:                            "Error in synchronize : " + e.getMessage(), e);
320:                }
321:            }
322:
323:            // libresource service
324:
325:            /**
326:             * @ejb.interface-method
327:             * @ejb.transaction type="Supports"
328:             */
329:            public LibresourceIndexableContent getIndexableContent(
330:                    LibresourceResourceIdentifier resourceIdentifier)
331:                    throws LibresourceException {
332:                try {
333:                    try {
334:                        Libresource.checkType(resourceIdentifier,
335:                                SiteResourceLocal.class);
336:
337:                        LibresourceIndexableContent content = new LibresourceIndexableContent();
338:                        SiteResourceLocal siteResourceLocal = (SiteResourceLocal) Libresource
339:                                .findResource(resourceIdentifier);
340:                        content.addContentPart(siteResourceLocal
341:                                .getDescription());
342:
343:                        return content;
344:                    } catch (LibresourceException e) {
345:                        //
346:                    }
347:
348:                    try {
349:                        Libresource.checkType(resourceIdentifier,
350:                                ProjectProxyResourceLocal.class);
351:
352:                        LibresourceIndexableContent content = new LibresourceIndexableContent();
353:                        ProjectProxyResourceLocal projectProxyResourceLocal = (ProjectProxyResourceLocal) Libresource
354:                                .findResource(resourceIdentifier);
355:                        content.addContentPart(projectProxyResourceLocal
356:                                .getName());
357:                        content.addContentPart(projectProxyResourceLocal
358:                                .getDescription());
359:                        content.addContentPart(projectProxyResourceLocal
360:                                .getSummary());
361:
362:                        return content;
363:                    } catch (LibresourceException e) {
364:                        //
365:                    }
366:
367:                    return null;
368:                } catch (Exception e) {
369:                    throw new LibresourceException(
370:                            "error in MetaSite.getIndexableContent("
371:                                    + resourceIdentifier + ")", e);
372:                }
373:            }
374:        }
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