Source Code Cross Referenced for StructuredArtifactHome.java in  » ERP-CRM-Financial » sakai » org » sakaiproject » metaobj » shared » mgt » home » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ERP CRM Financial » sakai » org.sakaiproject.metaobj.shared.mgt.home 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**********************************************************************************
002:         * $URL: https://source.sakaiproject.org/svn/metaobj/tags/sakai_2-4-1/metaobj-impl/api-impl/src/java/org/sakaiproject/metaobj/shared/mgt/home/StructuredArtifactHome.java $
003:         * $Id: StructuredArtifactHome.java 21321 2007-02-11 08:23:36Z john.ellis@rsmart.com $
004:         ***********************************************************************************
005:         *
006:         * Copyright (c) 2004, 2005, 2006 The Sakai Foundation.
007:         * 
008:         * Licensed under the Educational Community License, Version 1.0 (the "License"); 
009:         * you may not use this file except in compliance with the License. 
010:         * You may obtain a copy of the License at
011:         * 
012:         *      http://www.opensource.org/licenses/ecl1.php
013:         * 
014:         * Unless required by applicable law or agreed to in writing, software 
015:         * distributed under the License is distributed on an "AS IS" BASIS, 
016:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
017:         * See the License for the specific language governing permissions and 
018:         * limitations under the License.
019:         *
020:         **********************************************************************************/package org.sakaiproject.metaobj.shared.mgt.home;
021:
022:        import java.io.ByteArrayInputStream;
023:        import java.io.ByteArrayOutputStream;
024:        import java.io.IOException;
025:        import java.io.InputStream;
026:        import java.text.MessageFormat;
027:        import java.util.Iterator;
028:        import java.util.List;
029:
030:        import org.jdom.*;
031:        import org.jdom.input.SAXBuilder;
032:        import org.jdom.xpath.XPath;
033:        import org.jdom.output.Format;
034:        import org.jdom.output.XMLOutputter;
035:        import org.sakaiproject.component.cover.ComponentManager;
036:        import org.sakaiproject.metaobj.shared.mgt.*;
037:        import org.sakaiproject.metaobj.shared.model.*;
038:        import org.sakaiproject.metaobj.shared.ArtifactFinder;
039:        import org.sakaiproject.metaobj.utils.Config;
040:        import org.sakaiproject.metaobj.utils.xml.SchemaNode;
041:        import org.sakaiproject.metaobj.worksite.intf.WorksiteAware;
042:        import org.sakaiproject.metaobj.worksite.mgt.WorksiteManager;
043:        import org.sakaiproject.metaobj.registry.FormResourceType;
044:        import org.sakaiproject.entity.api.ResourcePropertiesEdit;
045:        import org.sakaiproject.entity.api.ResourceProperties;
046:        import org.sakaiproject.content.cover.ContentHostingService;
047:        import org.sakaiproject.content.api.ContentResourceEdit;
048:        import org.sakaiproject.content.api.ContentResource;
049:        import org.sakaiproject.exception.*;
050:        import org.springframework.beans.BeansException;
051:        import org.springframework.context.ApplicationContext;
052:        import org.springframework.context.ApplicationContextAware;
053:
054:        /**
055:         * Created by IntelliJ IDEA.
056:         * User: John Ellis
057:         * Date: May 17, 2004
058:         * Time: 2:52:00 PM
059:         * To change this template use File | Settings | File Templates.
060:         */
061:        public class StructuredArtifactHome extends XmlElementHome implements 
062:                StructuredArtifactHomeInterface, WorksiteAware,
063:                ApplicationContextAware, Comparable, StreamableObjectHome {
064:
065:            protected final static org.apache.commons.logging.Log logger = org.apache.commons.logging.LogFactory
066:                    .getLog(StructuredArtifactHome.class);
067:
068:            private boolean modifiable = false;
069:            private PresentableObjectHome repositoryHelper;
070:            private IdManager idManager;
071:            private String siteId;
072:            private ArtifactFinder artifactFinder;
073:
074:            private static final MessageFormat format = new MessageFormat(
075:                    "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"0;URL={0}/member/viewArtifact.osp?artifactId={1}&artifactType={2}&pid={3}\">");
076:
077:            public Artifact store(Artifact object) throws PersistenceException {
078:                Id id = object.getId();
079:
080:                if (id == null) {
081:                    return addArtifact(object);
082:                } else {
083:                    return updateArtifact(object);
084:                }
085:            }
086:
087:            protected Artifact updateArtifact(Artifact object)
088:                    throws PersistenceException {
089:                StructuredArtifact artifact = (StructuredArtifact) object;
090:                String resourceId = ContentHostingService.resolveUuid(artifact
091:                        .getId().getValue());
092:                try {
093:                    ContentResourceEdit resourceEdit = ContentHostingService
094:                            .editResource(resourceId);
095:                    resourceEdit.setContent(getInfoBytes(object));
096:                    resourceEdit.getProperties().addProperty(
097:                            ResourceProperties.PROP_DISPLAY_NAME,
098:                            object.getDisplayName());
099:                    ContentHostingService.commitResource(resourceEdit);
100:                } catch (PermissionException e) {
101:                    throw new PersistenceException(e, "Unknown file error",
102:                            null, null);
103:                } catch (IdUnusedException e) {
104:                    throw new PersistenceException(e, "Unknown file error",
105:                            null, null);
106:                } catch (TypeException e) {
107:                    throw new PersistenceException(e, "Unknown file error",
108:                            null, null);
109:                } catch (InUseException e) {
110:                    throw new PersistenceException(e, "Unknown file error",
111:                            null, null);
112:                } catch (ServerOverloadException e) {
113:                    throw new PersistenceException(e, "Unknown file error",
114:                            null, null);
115:                } catch (OverQuotaException e) {
116:                    throw new PersistenceException(e, "Over quota", null, null);
117:                }
118:
119:                return object;
120:            }
121:
122:            public StructuredArtifact load(ContentResource resource) {
123:                try {
124:                    Agent resourceOwner = getAgentManager().getAgent(
125:                            resource.getProperties().getProperty(
126:                                    ResourceProperties.PROP_CREATOR));
127:                    Id resourceId = getIdManager().getId(
128:                            ContentHostingService.getUuid(resource.getId()));
129:
130:                    SAXBuilder builder = new SAXBuilder();
131:                    Document doc = builder.build(resource.streamContent());
132:
133:                    StructuredArtifact xmlObject = new StructuredArtifact(doc
134:                            .getRootElement(), getSchema().getChild(
135:                            getRootNode()));
136:
137:                    xmlObject.setBaseResource(resource);
138:                    xmlObject.setId(resourceId);
139:                    xmlObject.setDisplayName((String) resource.getProperties()
140:                            .get(
141:                                    resource.getProperties()
142:                                            .getNamePropDisplayName()));
143:                    xmlObject.setHome(this );
144:                    xmlObject.setOwner(resourceOwner);
145:
146:                    return xmlObject;
147:                } catch (Exception e) {
148:                    throw new PersistenceException(e, "", null, null);
149:                }
150:            }
151:
152:            private AgentManager getAgentManager() {
153:                return (AgentManager) ComponentManager.get("agentManager");
154:            }
155:
156:            public Artifact load(Id id) throws PersistenceException {
157:                /** todo
158:                 NodeMetadata node = getNodeMetadataService().getNode(id);
159:                 SAXBuilder builder = new SAXBuilder();
160:
161:                 try {
162:                 Document doc = builder.build(
163:                 getStreamStore().load(node, RepositoryNode.TECH_MD_TYPE));
164:
165:                 StructuredArtifact xmlObject =
166:                 new StructuredArtifact(doc.getRootElement(), getSchema().getChild(getRootNode()));
167:
168:                 xmlObject.setId(id);
169:                 xmlObject.setDisplayName(node.getName());
170:                 xmlObject.setHome(this);
171:                 xmlObject.setOwner(node.getOwner());
172:
173:                 return xmlObject;
174:                 } catch (Exception e) {
175:                 throw new SchemaInvalidException(e);
176:                 }
177:                 */
178:                return null;
179:            }
180:
181:            public void remove(Artifact object) throws PersistenceException {
182:                /**
183:                 getStreamStore().delete(getNodeMetadata(object.getId()));
184:                 getNodeMetadataService().delete(object.getId());
185:                 */
186:            }
187:
188:            public Artifact cloneArtifact(Artifact copy, String newName)
189:                    throws PersistenceException {
190:                /** todo
191:                 NodeMetadata oldMetadata = getNodeMetadataService().getNode(copy.getId());
192:                 String origName = oldMetadata.getName();
193:                 oldMetadata.setName(newName);
194:                 NodeMetadata newMetadata = getNodeMetadataService().copyNode(oldMetadata);
195:                 oldMetadata.setName(origName);
196:                 getStreamStore().copyStreams(getNodeMetadataService().getNode(copy.getId()), newMetadata);
197:
198:                 return new LightweightArtifact(this, newMetadata);
199:                 */
200:                return null;
201:            }
202:
203:            protected Artifact addArtifact(Artifact object)
204:                    throws PersistenceException {
205:                StructuredArtifact artifact = (StructuredArtifact) object;
206:                String newFileId = artifact.getParentFolder()
207:                        + getIdManager().createId().getValue();
208:
209:                try {
210:                    ContentResourceEdit resource = ContentHostingService
211:                            .addResource(newFileId);
212:                    resource.setResourceType(FormResourceType.FORM_TYPE_ID);
213:                    ResourcePropertiesEdit resourceProperties = resource
214:                            .getPropertiesEdit();
215:                    resourceProperties.addProperty(
216:                            ResourceProperties.PROP_DISPLAY_NAME, object
217:                                    .getDisplayName());
218:                    resourceProperties.addProperty(
219:                            ResourceProperties.PROP_DESCRIPTION, object
220:                                    .getDisplayName());
221:                    resourceProperties.addProperty(
222:                            ResourceProperties.PROP_CONTENT_ENCODING, "UTF-8");
223:                    resourceProperties
224:                            .addProperty(
225:                                    ResourceProperties.PROP_STRUCTOBJ_TYPE,
226:                                    getTypeId());
227:                    resourceProperties.addProperty(
228:                            ResourceProperties.PROP_IS_COLLECTION,
229:                            Boolean.FALSE.toString());
230:                    resourceProperties
231:                            .addProperty(
232:                                    ContentHostingService.PROP_ALTERNATE_REFERENCE,
233:                                    org.sakaiproject.metaobj.shared.mgt.MetaobjEntityManager.METAOBJ_ENTITY_PREFIX);
234:
235:                    resource.setContent(getInfoBytes(artifact));
236:                    ContentHostingService.commitResource(resource);
237:                    artifact.setId(getIdManager().getId(
238:                            ContentHostingService.getUuid(newFileId)));
239:                    return object;
240:                } catch (PermissionException e) {
241:                    throw new PersistenceException(
242:                            "No permission to write file", null, null);
243:                } catch (IdUsedException e) {
244:                    throw new PersistenceException("Resource exists {0}",
245:                            new Object[] { artifact.getDisplayName() },
246:                            "displayName");
247:                } catch (IdInvalidException e) {
248:                    throw new PersistenceException("Invalid name {0}",
249:                            new Object[] { artifact.getDisplayName() },
250:                            "displayName");
251:                } catch (InconsistentException e) {
252:                    throw new PersistenceException("Invalid name {0}",
253:                            new Object[] { artifact.getDisplayName() },
254:                            "displayName");
255:                } catch (ServerOverloadException e) {
256:                    throw new PersistenceException(e, "Unknown file error",
257:                            null, null);
258:                } catch (OverQuotaException e) {
259:                    throw new PersistenceException("Over quota", null, null);
260:                }
261:            }
262:
263:            /**
264:             * protected InputStream getFileStream(StructuredArtifact xmlObject) {
265:             * StringBuffer sb = new StringBuffer();
266:             * <p/>
267:             * format.format(new Object[]{getHostBaseUrl(), xmlObject.getId().getValue(),
268:             * getType().getId().getValue(),
269:             * getWorksiteManager().getCurrentWorksiteId() },
270:             * sb, new FieldPosition(0));
271:             * logger.debug("redirecting to: " + sb.toString());
272:             * InputStream is = new ByteArrayInputStream(sb.toString().getBytes());
273:             * <p/>
274:             * return is;
275:             * }
276:             */
277:
278:            protected byte[] getInfoBytes(Artifact object)
279:                    throws PersistenceException {
280:
281:                XMLOutputter outputter = new XMLOutputter();
282:                StructuredArtifact xmlObject = (StructuredArtifact) object;
283:                ByteArrayOutputStream os = new ByteArrayOutputStream();
284:
285:                try {
286:                    Format format = Format.getPrettyFormat();
287:                    outputter.setFormat(format);
288:                    outputter.output(xmlObject.getBaseElement(), os);
289:                    return os.toByteArray();
290:                } catch (IOException e) {
291:                    throw new PersistenceException(e, "Unable to write object",
292:                            null, null);
293:                }
294:            }
295:
296:            public byte[] getBytes(StructuredArtifact artifact) {
297:                return getInfoBytes(artifact);
298:            }
299:
300:            protected InputStream getInfoStream(Artifact object)
301:                    throws PersistenceException {
302:                return new ByteArrayInputStream(getInfoBytes(object));
303:            }
304:
305:            public String getHostBaseUrl() {
306:                return Config.getInstance().getProperties().getProperty(
307:                        "baseUrl");
308:            }
309:
310:            public Element getArtifactAsXml(Artifact art) {
311:                StructuredArtifact sa = (StructuredArtifact) art;
312:
313:                Element root = new Element("artifact");
314:                root.addContent(getMetadata(sa));
315:
316:                Element data = new Element("structuredData");
317:                Element baseElement = (Element) sa.getBaseElement().clone();
318:                data.addContent(baseElement);
319:                root.addContent(data);
320:
321:                Element schemaData = new Element("schema");
322:                schemaData.addContent(createInstructions());
323:                schemaData.addContent(addSchemaInfo(getRootSchema()));
324:
325:                // for now, don't call this... we may add this when
326:                // we need to store id rather than ref... for now, keep
327:                // this backward compatible with existing templates
328:                // replaceFileRefs(schemaData, data);
329:
330:                root.addContent(schemaData);
331:
332:                return root;
333:            }
334:
335:            protected void replaceFileRefs(Element schemaData, Element data) {
336:                try {
337:                    XPath fileAttachPath = XPath
338:                            .newInstance(".//element[@type='xs:anyURI']");
339:                    List fileElements = fileAttachPath.selectNodes(schemaData);
340:                    for (Iterator i = fileElements.iterator(); i.hasNext();) {
341:                        processFileElement((Element) i.next(), data);
342:                    }
343:                } catch (JDOMException e) {
344:                    throw new RuntimeException(e);
345:                }
346:            }
347:
348:            protected void processFileElement(Element element, Element data)
349:                    throws JDOMException {
350:                String path = "";
351:
352:                while (element != null) {
353:                    if (path.length() > 0) {
354:                        path = "/" + path;
355:                    }
356:                    path = element.getAttributeValue("name") + path;
357:                    element = element.getParentElement();
358:                    if (element != null) {
359:                        element = element.getParentElement();
360:                    }
361:                }
362:
363:                List fileElements = XPath.selectNodes(data, path);
364:
365:                for (Iterator i = fileElements.iterator(); i.hasNext();) {
366:                    Element filePath = (Element) i.next();
367:                    String fileId = filePath.getTextTrim();
368:                    Artifact fileArt = getArtifactFinder().load(
369:                            getIdManager().getId(fileId));
370:                    PresentableObjectHome home = (PresentableObjectHome) fileArt
371:                            .getHome();
372:                    Element file = home.getArtifactAsXml(fileArt);
373:                    file.setName("artifact");
374:                    filePath.addContent(file);
375:                }
376:            }
377:
378:            protected Element getMetadata(Artifact art) {
379:                Element root = new Element("metaData");
380:
381:                if (art.getId() != null) {
382:                    root.addContent(createNode("id", art.getId().getValue()));
383:                }
384:                root
385:                        .addContent(createNode("displayName", art
386:                                .getDisplayName()));
387:
388:                Element type = new Element("type");
389:                root.addContent(type);
390:
391:                type.addContent(createNode("id", "file"));
392:                type.addContent(createNode("description", "file"));
393:
394:                ContentResource contentResource = ((StructuredArtifact) art)
395:                        .getBaseResource();
396:                if (contentResource != null) {
397:                    Element repositoryNode = ContentHostingUtil
398:                            .createRepoNode(contentResource);
399:                    root.addContent(repositoryNode);
400:                }
401:
402:                return root;
403:            }
404:
405:            protected Element createNode(String name, String value) {
406:                Element newNode = new Element(name);
407:                newNode.addContent(value);
408:                return newNode;
409:            }
410:
411:            protected Element createInstructions() {
412:                Element instructions = new Element("instructions");
413:                instructions.setContent(new CDATA(getInstruction()));
414:                return instructions;
415:            }
416:
417:            protected Element addSchemaInfo(SchemaNode schema) {
418:                Element schemaElement = new Element("element");
419:                schemaElement.setAttribute("name", schema.getName());
420:                if (schema.getType() != null
421:                        && schema.getType().getBaseType() != null) {
422:                    schemaElement.setAttribute("type", schema.getType()
423:                            .getBaseType());
424:                }
425:                schemaElement.setAttribute("minOccurs", schema.getMinOccurs()
426:                        + "");
427:                schemaElement.setAttribute("maxOccurs", schema.getMaxOccurs()
428:                        + "");
429:                Element annotation = schema.getSchemaElement().getChild(
430:                        "annotation", schema.getSchemaElement().getNamespace());
431:
432:                if (annotation != null) {
433:                    schemaElement.addContent((Content) annotation.clone());
434:                }
435:
436:                Element simpleType = schema.getSchemaElement().getChild(
437:                        "simpleType", schema.getSchemaElement().getNamespace());
438:
439:                if (simpleType != null) {
440:                    schemaElement.addContent((Content) simpleType.clone());
441:                }
442:
443:                List children = schema.getChildren();
444:                Element childElement = new Element("children");
445:                boolean found = false;
446:                for (Iterator i = children.iterator(); i.hasNext();) {
447:                    childElement
448:                            .addContent(addSchemaInfo((SchemaNode) i.next()));
449:                    found = true;
450:                }
451:
452:                if (found) {
453:                    schemaElement.addContent(childElement);
454:                }
455:
456:                return schemaElement;
457:            }
458:
459:            public String getSiteId() {
460:                return siteId;
461:            }
462:
463:            public void setSiteId(String siteId) {
464:                this .siteId = siteId;
465:            }
466:
467:            public boolean isModifiable() {
468:                return modifiable;
469:            }
470:
471:            /**
472:             * @return true if SAD is global (available to all worksites)
473:             */
474:            public boolean isGlobal() {
475:                return (getSiteId() == null || getSiteId().length() == 0);
476:            }
477:
478:            public PresentableObjectHome getRepositoryHelper() {
479:                return repositoryHelper;
480:            }
481:
482:            public void setRepositoryHelper(
483:                    PresentableObjectHome repositoryHelper) {
484:                this .repositoryHelper = repositoryHelper;
485:            }
486:
487:            public IdManager getIdManager() {
488:                if (idManager == null) {
489:                    setIdManager((IdManager) ComponentManager.get("idManager"));
490:                }
491:                return idManager;
492:            }
493:
494:            public void setIdManager(IdManager idManager) {
495:                this .idManager = idManager;
496:            }
497:
498:            public void setApplicationContext(
499:                    ApplicationContext applicationContext)
500:                    throws BeansException {
501:                setIdManager((IdManager) applicationContext
502:                        .getBean("idManager"));
503:                setRepositoryHelper((PresentableObjectHome) applicationContext
504:                        .getBean("repositoryHelper"));
505:            }
506:
507:            public int compareTo(Object o) {
508:                StructuredArtifactHome that = (StructuredArtifactHome) o;
509:                return this .getType().getDescription().toLowerCase().compareTo(
510:                        that.getType().getDescription().toLowerCase());
511:            }
512:
513:            public InputStream getStream(Id artifactId) {
514:                try {
515:                    StructuredArtifact artifact = (StructuredArtifact) load(artifactId);
516:                    return getInfoStream(artifact);
517:                } catch (PersistenceException e) {
518:                    throw new RuntimeException(e);
519:                }
520:            }
521:
522:            public boolean isSystemOnly() {
523:                return false;
524:            }
525:
526:            protected WorksiteManager getWorksiteManager() {
527:                return (WorksiteManager) ComponentManager.getInstance().get(
528:                        WorksiteManager.class.getName());
529:            }
530:
531:            public ArtifactFinder getArtifactFinder() {
532:                if (artifactFinder == null) {
533:                    setArtifactFinder((ArtifactFinder) ComponentManager
534:                            .get("org.sakaiproject.metaobj.shared.ArtifactFinder.fileArtifact"));
535:                }
536:                return artifactFinder;
537:            }
538:
539:            public void setArtifactFinder(ArtifactFinder artifactFinder) {
540:                this.artifactFinder = artifactFinder;
541:            }
542:
543:        }
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