/*
* (C) Copyright 2007 Nuxeo SA (http://nuxeo.com/) and others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Contributors:
* Nuxeo - initial API and implementation
*
* $Id$
*/
package org.nuxeo.ecm.platform.comment.impl;
import java.io.Serializable;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.nuxeo.ecm.core.api.CoreInstance;
import org.nuxeo.ecm.core.api.CoreSession;
import org.nuxeo.ecm.core.api.DocumentModel;
import org.nuxeo.ecm.core.api.DocumentRef;
import org.nuxeo.ecm.core.api.NuxeoException;
import org.nuxeo.ecm.core.api.NuxeoPrincipal;
import org.nuxeo.ecm.core.api.PathRef;
import org.nuxeo.ecm.core.api.PropertyException;
import org.nuxeo.ecm.core.api.pathsegment.PathSegmentService;
import org.nuxeo.ecm.core.api.security.ACE;
import org.nuxeo.ecm.core.api.security.ACL;
import org.nuxeo.ecm.core.api.security.ACP;
import org.nuxeo.ecm.core.api.security.SecurityConstants;
import org.nuxeo.ecm.core.api.security.impl.ACLImpl;
import org.nuxeo.ecm.core.api.security.impl.ACPImpl;
import org.nuxeo.ecm.core.event.Event;
import org.nuxeo.ecm.core.event.EventProducer;
import org.nuxeo.ecm.core.event.impl.DocumentEventContext;
import org.nuxeo.ecm.platform.comment.api.CommentConstants;
import org.nuxeo.ecm.platform.comment.api.CommentConverter;
import org.nuxeo.ecm.platform.comment.api.CommentEvents;
import org.nuxeo.ecm.platform.comment.api.CommentManager;
import org.nuxeo.ecm.platform.comment.service.CommentServiceConfig;
import org.nuxeo.ecm.platform.comment.workflow.utils.CommentsConstants;
import org.nuxeo.ecm.platform.relations.api.Graph;
import org.nuxeo.ecm.platform.relations.api.RelationManager;
import org.nuxeo.ecm.platform.relations.api.Resource;
import org.nuxeo.ecm.platform.relations.api.ResourceAdapter;
import org.nuxeo.ecm.platform.relations.api.Statement;
import org.nuxeo.ecm.platform.relations.api.impl.QNameResourceImpl;
import org.nuxeo.ecm.platform.relations.api.impl.ResourceImpl;
import org.nuxeo.ecm.platform.relations.api.impl.StatementImpl;
import org.nuxeo.ecm.platform.relations.jena.JenaGraph;
import org.nuxeo.ecm.platform.usermanager.UserManager;
import org.nuxeo.runtime.api.Framework;
/**
* @author <a href="mailto:glefter@nuxeo.com">George Lefter</a>
*/
public class CommentManagerImpl implements CommentManager {
private static final Log log = LogFactory.getLog(CommentManagerImpl.class);
final SimpleDateFormat timeFormat = new SimpleDateFormat("dd-HHmmss.S");
final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM");
final CommentServiceConfig config;
final CommentConverter commentConverter;
public static final String COMMENTS_DIRECTORY = "Comments";
public CommentManagerImpl(CommentServiceConfig config) {
this.config = config;
commentConverter = config.getCommentConverter();
}
public List<DocumentModel> getComments(DocumentModel docModel) {
Map<String, Object> ctxMap = Collections.<String, Object> singletonMap(
ResourceAdapter.CORE_SESSION_CONTEXT_KEY, docModel.getCoreSession());
RelationManager relationManager = Framework.getService(RelationManager.class);
Graph graph = relationManager.getGraph(config.graphName, docModel.getCoreSession());
Resource docResource = relationManager.getResource(config.documentNamespace, docModel, ctxMap);
if (docResource == null) {
throw new NuxeoException("Could not adapt document model to relation resource ; "
+ "check the service relation adapters configuration");
}
// FIXME AT: why no filter on the predicate?
List<Statement> statementList = graph.getStatements(null, null, docResource);
if (graph instanceof JenaGraph) {
// XXX AT: BBB for when repository name was not included in the
// resource uri
Resource oldDocResource = new QNameResourceImpl(config.documentNamespace, docModel.getId());
statementList.addAll(graph.getStatements(null, null, oldDocResource));
}
List<DocumentModel> commentList = new ArrayList<DocumentModel>();
for (Statement stmt : statementList) {
QNameResourceImpl subject = (QNameResourceImpl) stmt.getSubject();
DocumentModel commentDocModel = (DocumentModel) relationManager.getResourceRepresentation(
config.commentNamespace, subject, ctxMap);
if (commentDocModel == null) {
// XXX AT: maybe user cannot see the comment
log.warn("Could not adapt comment relation subject to a document "
+ "model; check the service relation adapters configur ation");
continue;
}
commentList.add(commentDocModel);
}
CommentSorter sorter = new CommentSorter(true);
Collections.sort(commentList, sorter);
return commentList;
}
public DocumentModel createComment(DocumentModel docModel, String comment, String author) {
try (CoreSession session = CoreInstance.openCoreSessionSystem(docModel.getRepositoryName())) {
DocumentModel commentDM = session.createDocumentModel(CommentsConstants.COMMENT_DOC_TYPE);
commentDM.setPropertyValue(CommentsConstants.COMMENT_TEXT, comment);
commentDM.setPropertyValue(CommentsConstants.COMMENT_AUTHOR, author);
commentDM.setPropertyValue(CommentsConstants.COMMENT_CREATION_DATE, Calendar.getInstance());
commentDM = internalCreateComment(session, docModel, commentDM, null);
session.save();
return commentDM;
}
}
public DocumentModel createComment(DocumentModel docModel, String comment) {
String author = getCurrentUser(docModel);
return createComment(docModel, comment, author);
}
/**
* If the author property on comment is not set, retrieve the author name from the session
*
* @param docModel The document model that holds the session id
* @param comment The comment to update
*/
private static String updateAuthor(DocumentModel docModel, DocumentModel comment) {
// update the author if not set
String author = (String) comment.getProperty("comment", "author");
if (author == null) {
log.debug("deprecated use of createComment: the client should set the author property on document");
author = getCurrentUser(docModel);
comment.setProperty("comment", "author", author);
}
return author;
}
public DocumentModel createComment(DocumentModel docModel, DocumentModel comment) {
try (CoreSession session = CoreInstance.openCoreSessionSystem(docModel.getRepositoryName())) {
DocumentModel doc = internalCreateComment(session, docModel, comment, null);
session.save();
doc.detach(true);
return doc;
}
}
protected DocumentModel internalCreateComment(CoreSession session, DocumentModel docModel, DocumentModel comment,
String path) {
String author = updateAuthor(docModel, comment);
DocumentModel createdComment;
createdComment = createCommentDocModel(session, docModel, comment, path);
RelationManager relationManager = Framework.getService(RelationManager.class);
Resource commentRes = relationManager.getResource(config.commentNamespace, createdComment, null);
Resource documentRes = relationManager.getResource(config.documentNamespace, docModel, null);
if (commentRes == null || documentRes == null) {
throw new NuxeoException("Could not adapt document model to relation resource ; "
+ "check the service relation adapters configuration");
}
Resource predicateRes = new ResourceImpl(config.predicateNamespace);
Statement stmt = new StatementImpl(commentRes, predicateRes, documentRes);
relationManager.getGraph(config.graphName, session).add(stmt);
UserManager userManager = Framework.getService(UserManager.class);
if (userManager != null) {
// null in tests
NuxeoPrincipal principal = userManager.getPrincipal(author);
if (principal != null) {
notifyEvent(session, docModel, CommentEvents.COMMENT_ADDED, null, createdComment, principal);
}
}
return createdComment;
}
private DocumentModel createCommentDocModel(CoreSession mySession, DocumentModel docModel, DocumentModel comment,
String path) {
String domainPath;
updateAuthor(docModel, comment);
String[] pathList = getCommentPathList(comment);
if (path == null) {
domainPath = "/" + docModel.getPath().segment(0);
} else {
domainPath = path;
}
if (mySession == null) {
return null;
}
// TODO GR upgrade this code. It can't work if current user
// doesn't have admin rights
DocumentModel parent = mySession.getDocument(new PathRef(domainPath));
for (String name : pathList) {
String pathStr = parent.getPathAsString();
PathRef ref = new PathRef(pathStr, name);
if (mySession.exists(ref)) {
parent = mySession.getDocument(ref);
if (!parent.isFolder()) {
throw new NuxeoException(parent.getPathAsString() + " is not folderish");
}
} else {
DocumentModel dm = mySession.createDocumentModel(pathStr, name, "HiddenFolder");
dm.setProperty("dublincore", "title", name);
dm.setProperty("dublincore", "description", "");
dm.setProperty("dublincore", "created", Calendar.getInstance());
dm = mySession.createDocument(dm);
setFolderPermissions(dm);
parent = dm;
}
}
String pathStr = parent.getPathAsString();
String commentName = getCommentName(docModel, comment);
CommentConverter converter = config.getCommentConverter();
PathSegmentService pss = Framework.getService(PathSegmentService.class);
DocumentModel commentDocModel = mySession.createDocumentModel(comment.getType());
commentDocModel.setProperty("dublincore", "title", commentName);
converter.updateDocumentModel(commentDocModel, comment);
commentDocModel.setPathInfo(pathStr, pss.generatePathSegment(commentDocModel));
commentDocModel = mySession.createDocument(commentDocModel);
setCommentPermissions(commentDocModel);
log.debug("created comment with id=" + commentDocModel.getId());
return commentDocModel;
}
private static void notifyEvent(CoreSession session, DocumentModel docModel, String eventType,
DocumentModel parent, DocumentModel child, NuxeoPrincipal principal) {
DocumentEventContext ctx = new DocumentEventContext(session, principal, docModel);
Map<String, Serializable> props = new HashMap<String, Serializable>();
if (parent != null) {
props.put(CommentConstants.PARENT_COMMENT, parent);
}
props.put(CommentConstants.COMMENT_DOCUMENT, child);
props.put(CommentConstants.COMMENT, (String) child.getProperty("comment", "text"));
// Keep comment_text for compatibility
props.put(CommentConstants.COMMENT_TEXT, (String) child.getProperty("comment", "text"));
props.put("category", CommentConstants.EVENT_COMMENT_CATEGORY);
ctx.setProperties(props);
Event event = ctx.newEvent(eventType);
EventProducer evtProducer = Framework.getService(EventProducer.class);
evtProducer.fireEvent(event);
// send also a synchronous Seam message so the CommentManagerActionBean
// can rebuild its list
// Events.instance().raiseEvent(eventType, docModel);
}
private static void setFolderPermissions(DocumentModel dm) {
ACP acp = new ACPImpl();
ACE grantAddChildren = new ACE("members", SecurityConstants.ADD_CHILDREN, true);
ACE grantRemoveChildren = new ACE("members", SecurityConstants.REMOVE_CHILDREN, true);
ACE grantRemove = new ACE("members", SecurityConstants.REMOVE, true);
ACL acl = new ACLImpl();
acl.setACEs(new ACE[] { grantAddChildren, grantRemoveChildren, grantRemove });
acp.addACL(acl);
dm.setACP(acp, true);
}
private static void setCommentPermissions(DocumentModel dm) {
ACP acp = new ACPImpl();
ACE grantRead = new ACE(SecurityConstants.EVERYONE, SecurityConstants.READ, true);
ACE grantRemove = new ACE("members", SecurityConstants.REMOVE, true);
ACL acl = new ACLImpl();
acl.setACEs(new ACE[] { grantRead, grantRemove });
acp.addACL(acl);
dm.setACP(acp, true);
}
private String[] getCommentPathList(DocumentModel comment) {
String[] pathList = new String[2];
pathList[0] = COMMENTS_DIRECTORY;
pathList[1] = dateFormat.format(getCommentTimeStamp(comment));
return pathList;
}
/**
* @deprecated if the caller is remote, we cannot obtain the session
*/
@Deprecated
private static String getCurrentUser(DocumentModel target) {
CoreSession userSession = target.getCoreSession();
if (userSession == null) {
throw new NuxeoException("userSession is null, do not invoke this method when the user is not local");
}
return userSession.getPrincipal().getName();
}
private String getCommentName(DocumentModel target, DocumentModel comment) {
String author = (String) comment.getProperty("comment", "author");
if (author == null) {
author = getCurrentUser(target);
}
Date creationDate = getCommentTimeStamp(comment);
return "COMMENT-" + author + '-' + timeFormat.format(creationDate.getTime());
}
private static Date getCommentTimeStamp(DocumentModel comment) {
Calendar creationDate;
try {
creationDate = (Calendar) comment.getProperty("dublincore", "created");
} catch (PropertyException e) {
creationDate = null;
}
if (creationDate == null) {
creationDate = Calendar.getInstance();
}
return creationDate.getTime();
}
public void deleteComment(DocumentModel docModel, DocumentModel comment) {
NuxeoPrincipal author = comment.getCoreSession() != null ? (NuxeoPrincipal) comment.getCoreSession().getPrincipal()
: getAuthor(comment);
try (CoreSession session = CoreInstance.openCoreSessionSystem(docModel.getRepositoryName())) {
DocumentRef ref = comment.getRef();
if (!session.exists(ref)) {
throw new NuxeoException("Comment Document does not exist: " + comment.getId());
}
session.removeDocument(ref);
notifyEvent(session, docModel, CommentEvents.COMMENT_REMOVED, null, comment, author);
session.save();
}
}
public DocumentModel createComment(DocumentModel docModel, DocumentModel parent, DocumentModel child)
{
try (CoreSession session = CoreInstance.openCoreSessionSystem(docModel.getRepositoryName())) {
DocumentModel parentDocModel = session.getDocument(parent.getRef());
DocumentModel newComment = internalCreateComment(session, parentDocModel, child, null);
session.save();
return newComment;
}
}
private static NuxeoPrincipal getAuthor(DocumentModel docModel) {
String[] contributors;
try {
contributors = (String[]) docModel.getProperty("dublincore", "contributors");
} catch (PropertyException e) {
log.error("Error building principal for comment author", e);
return null;
}
UserManager userManager = Framework.getService(UserManager.class);
return userManager.getPrincipal(contributors[0]);
}
public List<DocumentModel> getComments(DocumentModel docModel, DocumentModel parent) {
return getComments(parent);
}
public List<DocumentModel> getDocumentsForComment(DocumentModel comment) {
Map<String, Object> ctxMap = Collections.<String, Object> singletonMap(
ResourceAdapter.CORE_SESSION_CONTEXT_KEY, comment.getCoreSession());
RelationManager relationManager = Framework.getService(RelationManager.class);
Graph graph = relationManager.getGraph(config.graphName, comment.getCoreSession());
Resource commentResource = relationManager.getResource(config.commentNamespace, comment, ctxMap);
if (commentResource == null) {
throw new NuxeoException("Could not adapt document model to relation resource ; "
+ "check the service relation adapters configuration");
}
Resource predicate = new ResourceImpl(config.predicateNamespace);
List<Statement> statementList = graph.getStatements(commentResource, predicate, null);
if (graph instanceof JenaGraph) {
// XXX AT: BBB for when repository name was not included in the
// resource uri
Resource oldDocResource = new QNameResourceImpl(config.commentNamespace, comment.getId());
statementList.addAll(graph.getStatements(oldDocResource, predicate, null));
}
List<DocumentModel> docList = new ArrayList<DocumentModel>();
for (Statement stmt : statementList) {
QNameResourceImpl subject = (QNameResourceImpl) stmt.getObject();
DocumentModel docModel = (DocumentModel) relationManager.getResourceRepresentation(
config.documentNamespace, subject, ctxMap);
if (docModel == null) {
log.warn("Could not adapt comment relation subject to a document "
+ "model; check the service relation adapters configuration");
continue;
}
docList.add(docModel);
}
return docList;
}
public DocumentModel createLocatedComment(DocumentModel docModel, DocumentModel comment, String path)
{
try (CoreSession session = CoreInstance.openCoreSessionSystem(docModel.getRepositoryName())) {
DocumentModel createdComment = internalCreateComment(session, docModel, comment, path);
session.save();
return createdComment;
}
}
public DocumentModel getThreadForComment(DocumentModel comment) {
List<DocumentModel> threads = getDocumentsForComment(comment);
if (threads.size() > 0) {
DocumentModel thread = (DocumentModel) threads.get(0);
while (thread.getType().equals("Post") || thread.getType().equals(CommentsConstants.COMMENT_DOC_TYPE)) {
thread = getThreadForComment(thread);
}
return thread;
}
return null;
}
}