- Finish exclusive locking support.

wise-webapp/src/main/java/com/wisemapping/exceptions/LockException.java

@@ -0,0 +1,35 @@
+/*
+*    Copyright [2011] [wisemapping]
+*
+*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
+*   It is basically the Apache License, Version 2.0 (the "License") plus the
+*   "powered by wisemapping" text requirement on every single page;
+*   you may not use this file except in compliance with the License.
+*   You may obtain a copy of the license at
+*
+*       http://www.wisemapping.org/license
+*
+*   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.
+*/
+
+package com.wisemapping.exceptions;
+
+import org.jetbrains.annotations.NotNull;
+
+public class LockException
+    extends ClientException
+{
+    public LockException(@NotNull String message) {
+        super(message);
+    }
+
+    @NotNull
+    @Override
+    protected String getMsgBundleKey() {
+        return null;  //To change body of implemented methods use File | Settings | File Templates.
+    }
+}

wise-webapp/src/main/java/com/wisemapping/exceptions/MindmapOutdatedException.java

@@ -1,29 +1,38 @@
-/*
-*    Copyright [2011] [wisemapping]
-*
-*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
-*   It is basically the Apache License, Version 2.0 (the "License") plus the
-*   "powered by wisemapping" text requirement on every single page;
-*   you may not use this file except in compliance with the License.
-*   You may obtain a copy of the license at
-*
-*       http://www.wisemapping.org/license
-*
-*   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.
-*/
-
-package com.wisemapping.exceptions;
-
-
-public class UnexpectedArgumentException
-    extends Exception
-{
-    public UnexpectedArgumentException(String msg)
-    {
-        super(msg);
-    }
-}
+/*
+*    Copyright [2011] [wisemapping]
+*
+*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
+*   It is basically the Apache License, Version 2.0 (the "License") plus the
+*   "powered by wisemapping" text requirement on every single page;
+*   you may not use this file except in compliance with the License.
+*   You may obtain a copy of the license at
+*
+*       http://www.wisemapping.org/license
+*
+*   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.
+*/
+
+package com.wisemapping.exceptions;
+
+import org.jetbrains.annotations.NotNull;
+
+public class MindmapOutdatedException
+    extends ClientException
+{
+    public static final String MSG_KEY = "MINDMAP_TIMESTAMP_OUTDATED";
+
+    public MindmapOutdatedException(@NotNull String msg)
+    {
+        super(msg);
+    }
+
+    @NotNull
+    @Override
+    protected String getMsgBundleKey() {
+        return MSG_KEY;
+    }
+}

wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java

@@ -138,10 +138,6 @@ public class Mindmap {
         return lastModificationTime;
     }
 
-    public Date getLastModificationDate() {
-        return new Date();
-    }
-
     public void setLastModificationTime(Calendar lastModificationTime) {
         this.lastModificationTime = lastModificationTime;
     }

wise-webapp/src/main/java/com/wisemapping/model/User.java

@@ -20,6 +20,8 @@ package com.wisemapping.model;
 
 import org.jetbrains.annotations.Nullable;
 
+import javax.servlet.http.HttpSessionBindingEvent;
+import javax.servlet.http.HttpSessionBindingListener;
 import java.io.Serializable;
 import java.util.*;
 

wise-webapp/src/main/java/com/wisemapping/ncontroller/MindmapController.java

@@ -19,12 +19,15 @@
 package com.wisemapping.ncontroller;
 
 
+import com.wisemapping.exceptions.AccessDeniedSecurityException;
+import com.wisemapping.exceptions.LockException;
 import com.wisemapping.exceptions.WiseMappingException;
 import com.wisemapping.model.CollaborationRole;
 import com.wisemapping.model.Mindmap;
 import com.wisemapping.model.MindMapHistory;
 import com.wisemapping.model.User;
 import com.wisemapping.security.Utils;
+import com.wisemapping.service.LockManager;
 import com.wisemapping.service.MindmapService;
 import com.wisemapping.view.MindMapBean;
 import org.jetbrains.annotations.NotNull;
@@ -140,33 +143,47 @@ public class MindmapController {
     }
 
     @RequestMapping(value = "maps/{id}/edit", method = RequestMethod.GET)
-    public String showMindmapEditorPage(@PathVariable int id, @NotNull Model model) {
+    public String showMindmapEditorPage(@PathVariable int id, @NotNull Model model) throws WiseMappingException {
+        return showEditorPage(id, model, true);
+    }
+
+    private String showEditorPage(int id, @NotNull final Model model, boolean requiresLock) throws AccessDeniedSecurityException, LockException {
         final MindMapBean mindmapBean = findMindmapBean(id);
         final Mindmap mindmap = mindmapBean.getDelegated();
+        final User collaborator = Utils.getUser();
+        final Locale locale = LocaleContextHolder.getLocale();
 
+        // Is the mindmap locked ?.
+        boolean readOnlyMode = !requiresLock || !mindmap.hasPermissions(collaborator, CollaborationRole.EDITOR);
+        if (!readOnlyMode) {
+            final LockManager lockManager = this.mindmapService.getLockManager();
+            if (lockManager.isLocked(mindmap) && !lockManager.isLockedBy(mindmap, collaborator)) {
+                readOnlyMode = true;
+                model.addAttribute("lockedBy", lockManager.getLockInfo(mindmap));
+            } else {
+                lockManager.lock(mindmap, collaborator);
+            }
+        }
+
+        // Set render attributes ...
         model.addAttribute("mindmap", mindmapBean);
 
         // Configure default locale for the editor ...
-        final Locale locale = LocaleContextHolder.getLocale();
         model.addAttribute("locale", locale.toString().toLowerCase());
-        final User collaborator = Utils.getUser();
         model.addAttribute("principal", collaborator);
-        model.addAttribute("readOnlyMode", !mindmap.hasPermissions(collaborator, CollaborationRole.EDITOR));
+        model.addAttribute("readOnlyMode", readOnlyMode);
         return "mindmapEditor";
     }
 
     @RequestMapping(value = "maps/{id}/view", method = RequestMethod.GET)
-    public String showMindmapViewerPage(@PathVariable int id, @NotNull Model model) {
-        final String result = showMindmapEditorPage(id, model);
-        model.addAttribute("readOnlyMode", true);
-        return result;
+    public String showMindmapViewerPage(@PathVariable int id, @NotNull Model model) throws LockException, AccessDeniedSecurityException {
+        return showEditorPage(id, model, false);
     }
 
     @RequestMapping(value = "maps/{id}/try", method = RequestMethod.GET)
-    public String showMindmapTryPage(@PathVariable int id, @NotNull Model model) {
-        final String result = showMindmapEditorPage(id, model);
+    public String showMindmapTryPage(@PathVariable int id, @NotNull Model model) throws LockException, AccessDeniedSecurityException {
+        final String result = showEditorPage(id, model, false);
         model.addAttribute("memoryPersistence", true);
-        model.addAttribute("readOnlyMode", false);
         return result;
     }
 
@@ -213,11 +230,7 @@ public class MindmapController {
     }
 
     private Mindmap findMindmap(long mapId) {
-        final Mindmap mindmap = mindmapService.findMindmapById((int) mapId);
-        if (mindmap == null) {
-            throw new IllegalArgumentException("Mindmap could not be found");
-        }
-        return mindmap;
+        return mindmapService.findMindmapById((int) mapId);
     }
 
     private MindMapBean findMindmapBean(long mapId) {

wise-webapp/src/main/java/com/wisemapping/rest/BaseController.java

@@ -24,6 +24,7 @@ import com.wisemapping.mail.NotificationService;
 import com.wisemapping.model.User;
 import com.wisemapping.rest.model.RestErrors;
 import com.wisemapping.security.Utils;
+import org.apache.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
@@ -41,6 +42,8 @@ import java.util.Locale;
 
 public class BaseController {
 
+    final protected static Logger logger = Logger.getLogger("com.wisemapping.rest");
+
     @Qualifier("messageSource")
     @Autowired
     private ResourceBundleMessageSource messageSource;

wise-webapp/src/main/java/com/wisemapping/rest/MindmapController.java

@@ -20,6 +20,7 @@ package com.wisemapping.rest;
 
 
 import com.wisemapping.exceptions.ImportUnexpectedException;
+import com.wisemapping.exceptions.MindmapOutdatedException;
 import com.wisemapping.exceptions.WiseMappingException;
 import com.wisemapping.importer.ImportFormat;
 import com.wisemapping.importer.Importer;
@@ -29,8 +30,10 @@ import com.wisemapping.model.*;
 import com.wisemapping.rest.model.*;
 import com.wisemapping.security.Utils;
 import com.wisemapping.service.CollaborationException;
+import com.wisemapping.service.LockManager;
 import com.wisemapping.service.MindmapService;
 import com.wisemapping.validator.MapInfoValidator;
+import org.apache.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
@@ -49,6 +52,7 @@ import java.util.*;
 
 @Controller
 public class MindmapController extends BaseController {
+
     public static final String LATEST_HISTORY_REVISION = "latest";
     @Qualifier("mindmapService")
     @Autowired
@@ -136,8 +140,8 @@ public class MindmapController extends BaseController {
     }
 
     @RequestMapping(method = RequestMethod.PUT, value = "/maps/{id}/document", consumes = {"application/xml", "application/json"}, produces = {"application/json", "text/html", "application/xml"})
-    @ResponseStatus(value = HttpStatus.NO_CONTENT)
-    public void updateDocument(@RequestBody RestMindmap restMindmap, @PathVariable int id, @RequestParam(required = false) boolean minor) throws WiseMappingException, IOException {
+    @ResponseBody
+    public long updateDocument(@RequestBody RestMindmap restMindmap, @PathVariable int id, @RequestParam(required = false) boolean minor, @RequestParam(required = false) Long timestamp) throws WiseMappingException, IOException {
 
         final Mindmap mindmap = mindmapService.findMindmapById(id);
         final User user = Utils.getUser();
@@ -148,6 +152,11 @@ public class MindmapController extends BaseController {
             throw new IllegalArgumentException("Map properties can not be null");
         }
 
+        // Check that there we are not overwriting an already existing map ...
+        if (timestamp != null && mindmap.getLastModificationTime().getTimeInMillis() > timestamp) {
+            throw new MindmapOutdatedException("Mindmap timestamp out of sync. Client timestamp: " + timestamp + ", DB Timestamp:" + timestamp);
+        }
+
         // Update collaboration properties ...
         final CollaborationProperties collaborationProperties = mindmap.findCollaborationProperties(user);
         collaborationProperties.setMindmapProperties(properties);
@@ -160,7 +169,11 @@ public class MindmapController extends BaseController {
         mindmap.setXmlStr(xml);
 
         // Update map ...
+        logger.debug("Mindmap save completed:" + restMindmap.getXml());
         saveMindmap(minor, mindmap, user);
+
+        // Return last update timestamp ...
+        return mindmap.getLastModificationTime().getTimeInMillis();
     }
 
     /**
@@ -317,6 +330,14 @@ public class MindmapController extends BaseController {
 
     }
 
+    @RequestMapping(method = RequestMethod.DELETE, value = "/maps/{id}")
+    @ResponseStatus(value = HttpStatus.NO_CONTENT)
+    public void updateMap(@PathVariable int id) throws IOException, WiseMappingException {
+        final User user = Utils.getUser();
+        final Mindmap mindmap = mindmapService.findMindmapById(id);
+        mindmapService.removeMindmap(mindmap, user);
+    }
+
     @RequestMapping(method = RequestMethod.PUT, value = "/maps/{id}/starred", consumes = {"text/plain"}, produces = {"application/json", "text/html", "application/xml"})
     @ResponseStatus(value = HttpStatus.NO_CONTENT)
     public void updateStarredState(@RequestBody String value, @PathVariable int id) throws WiseMappingException {
@@ -334,12 +355,13 @@ public class MindmapController extends BaseController {
         mindmapService.updateCollaboration(user, collaboration);
     }
 
-    @RequestMapping(method = RequestMethod.DELETE, value = "/maps/{id}")
+    @RequestMapping(method = RequestMethod.PUT, value = "/maps/{id}/lock", consumes = {"text/plain"}, produces = {"application/json", "text/html", "application/xml"})
     @ResponseStatus(value = HttpStatus.NO_CONTENT)
-    public void updateMap(@PathVariable int id) throws IOException, WiseMappingException {
+    public void updateMapLock(@RequestBody String value, @PathVariable int id) throws IOException, WiseMappingException {
         final User user = Utils.getUser();
+        final LockManager lockManager = mindmapService.getLockManager();
         final Mindmap mindmap = mindmapService.findMindmapById(id);
-        mindmapService.removeMindmap(mindmap, user);
+        lockManager.updateLock(Boolean.parseBoolean(value), mindmap, user);
     }
 
     @RequestMapping(method = RequestMethod.DELETE, value = "/maps/batch")

wise-webapp/src/main/java/com/wisemapping/rest/model/RestMindmapLock.java

@@ -0,0 +1,55 @@
+package com.wisemapping.rest.model;
+
+
+import com.wisemapping.model.Collaborator;
+import com.wisemapping.model.User;
+import com.wisemapping.service.LockInfo;
+import org.codehaus.jackson.annotate.JsonAutoDetect;
+import org.codehaus.jackson.annotate.JsonIgnore;
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlRootElement;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Set;
+
+@XmlRootElement(name = "lock")
+@XmlAccessorType(XmlAccessType.PROPERTY)
+@JsonAutoDetect(
+        fieldVisibility = JsonAutoDetect.Visibility.NONE,
+        getterVisibility = JsonAutoDetect.Visibility.PUBLIC_ONLY,
+        isGetterVisibility = JsonAutoDetect.Visibility.PUBLIC_ONLY)
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class RestMindmapLock {
+
+    @NotNull
+    private Collaborator user;
+    @Nullable
+    private LockInfo lockInfo;
+
+    public RestMindmapLock(@Nullable LockInfo lockInfo, @NotNull Collaborator collaborator) {
+
+        this.lockInfo = lockInfo;
+        this.user = collaborator;
+    }
+
+    public boolean isLocked() {
+        return lockInfo != null;
+    }
+
+    public void setLocked(boolean locked) {
+        // Ignore ...
+    }
+
+    public boolean isLockedByMe() {
+        return isLocked() && lockInfo != null && lockInfo.getCollaborator().equals(user);
+    }
+
+    public void setLockedByMe(boolean lockedForMe) {
+        // Ignore ...
+    }
+}

wise-webapp/src/main/java/com/wisemapping/security/AuthenticationProvider.java

@@ -1,3 +1,21 @@
+/*
+*    Copyright [2011] [wisemapping]
+*
+*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
+*   It is basically the Apache License, Version 2.0 (the "License") plus the
+*   "powered by wisemapping" text requirement on every single page;
+*   you may not use this file except in compliance with the License.
+*   You may obtain a copy of the license at
+*
+*       http://www.wisemapping.org/license
+*
+*   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.
+*/
+
 package com.wisemapping.security;
 
 

wise-webapp/src/main/java/com/wisemapping/security/aop/BaseSecurityAdvice.java

@@ -22,7 +22,6 @@ import com.wisemapping.model.Collaborator;
 import com.wisemapping.model.Mindmap;
 import com.wisemapping.model.User;
 import com.wisemapping.exceptions.AccessDeniedSecurityException;
-import com.wisemapping.exceptions.UnexpectedArgumentException;
 import com.wisemapping.security.Utils;
 import com.wisemapping.service.MindmapService;
 import org.aopalliance.intercept.MethodInvocation;
@@ -31,7 +30,7 @@ import org.jetbrains.annotations.Nullable;
 public abstract class BaseSecurityAdvice {
     private MindmapService mindmapService = null;
 
-    public void checkRole(MethodInvocation methodInvocation) throws UnexpectedArgumentException, AccessDeniedSecurityException {
+    public void checkRole(MethodInvocation methodInvocation) throws AccessDeniedSecurityException {
         final User user = Utils.getUser();
         final Object argument = methodInvocation.getArguments()[0];
         boolean isAllowed;
@@ -44,7 +43,7 @@ public abstract class BaseSecurityAdvice {
             // Read operation find on the user are allowed ...
             isAllowed = user.equals(argument);
         } else {
-            throw new UnexpectedArgumentException("Argument " + argument);
+            throw new IllegalArgumentException("Argument " + argument);
         }
 
         if (!isAllowed) {

wise-webapp/src/main/java/com/wisemapping/service/LockInfo.java

@@ -0,0 +1,50 @@
+/*
+*    Copyright [2011] [wisemapping]
+*
+*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
+*   It is basically the Apache License, Version 2.0 (the "License") plus the
+*   "powered by wisemapping" text requirement on every single page;
+*   you may not use this file except in compliance with the License.
+*   You may obtain a copy of the license at
+*
+*       http://www.wisemapping.org/license
+*
+*   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.
+*/
+
+package com.wisemapping.service;
+
+import com.wisemapping.model.Collaborator;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Calendar;
+
+public class LockInfo {
+    final private Collaborator collaborator;
+    private Calendar timeout;
+    private static int EXPIRATION_MIN = 25;
+
+    public LockInfo(@NotNull Collaborator collaborator) {
+        this.collaborator = collaborator;
+        this.updateTimeout();
+    }
+
+    public Collaborator getCollaborator() {
+        return collaborator;
+    }
+
+    public boolean isExpired() {
+      return timeout.before(Calendar.getInstance());
+    }
+
+    public void updateTimeout() {
+        final Calendar calendar = Calendar.getInstance();
+        calendar.add(Calendar.MINUTE, EXPIRATION_MIN);
+        this.timeout = calendar;
+
+    }
+}

wise-webapp/src/main/java/com/wisemapping/service/LockManager.java

@@ -0,0 +1,43 @@
+/*
+*    Copyright [2011] [wisemapping]
+*
+*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
+*   It is basically the Apache License, Version 2.0 (the "License") plus the
+*   "powered by wisemapping" text requirement on every single page;
+*   you may not use this file except in compliance with the License.
+*   You may obtain a copy of the license at
+*
+*       http://www.wisemapping.org/license
+*
+*   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.
+*/
+
+package com.wisemapping.service;
+
+import com.wisemapping.exceptions.AccessDeniedSecurityException;
+import com.wisemapping.exceptions.LockException;
+import com.wisemapping.exceptions.WiseMappingException;
+import com.wisemapping.model.Collaborator;
+import com.wisemapping.model.Mindmap;
+import com.wisemapping.model.User;
+import org.jetbrains.annotations.NotNull;
+
+public interface LockManager {
+    boolean isLocked(@NotNull Mindmap mindmap);
+
+    LockInfo getLockInfo(@NotNull Mindmap mindmap);
+
+    void updateExpirationTimeout(@NotNull Mindmap mindmap, @NotNull Collaborator user);
+
+    void unlock(@NotNull Mindmap mindmap, @NotNull Collaborator user) throws LockException, AccessDeniedSecurityException;
+
+    boolean isLockedBy(@NotNull Mindmap mindmap, @NotNull Collaborator collaborator);
+
+    void lock(@NotNull Mindmap mindmap, @NotNull Collaborator user) throws AccessDeniedSecurityException, LockException;
+
+    void updateLock(boolean value, Mindmap mindmap, User user) throws WiseMappingException;
+}

wise-webapp/src/main/java/com/wisemapping/service/LockManagerImpl.java

@@ -0,0 +1,153 @@
+/*
+*    Copyright [2011] [wisemapping]
+*
+*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
+*   It is basically the Apache License, Version 2.0 (the "License") plus the
+*   "powered by wisemapping" text requirement on every single page;
+*   you may not use this file except in compliance with the License.
+*   You may obtain a copy of the license at
+*
+*       http://www.wisemapping.org/license
+*
+*   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.
+*/
+
+package com.wisemapping.service;
+
+import com.wisemapping.exceptions.AccessDeniedSecurityException;
+import com.wisemapping.exceptions.LockException;
+import com.wisemapping.exceptions.WiseMappingException;
+import com.wisemapping.model.CollaborationRole;
+import com.wisemapping.model.Collaborator;
+import com.wisemapping.model.Mindmap;
+import com.wisemapping.model.User;
+import org.apache.log4j.Logger;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
+
+/*
+* Refresh page should not lost the lock.
+* En caso que no sea posible grabar por que se perdio el lock, usar mensaje de error para explicar el por que...
+* Mensaje  modal explicando que el mapa esta siendo editado, por eso no es posible edilarlo....
+*/
+
+class LockManagerImpl implements LockManager {
+    public static final int ONE_MINUTE_MILLISECONDS = 1000 * 60;
+    final Map<Integer, LockInfo> lockInfoByMapId;
+    final static Timer expirationTimer = new Timer();
+    final private static Logger logger = Logger.getLogger("com.wisemapping.service.LockManager");
+
+    public LockManagerImpl() {
+        lockInfoByMapId = new ConcurrentHashMap<Integer, LockInfo>();
+        expirationTimer.schedule(new TimerTask() {
+            @Override
+            public void run() {
+
+                logger.debug("Lock expiration scheduler started. Current locks:" + lockInfoByMapId.keySet());
+
+                final List<Integer> toRemove = new ArrayList<Integer>();
+                final Set<Integer> mapIds = lockInfoByMapId.keySet();
+                for (Integer mapId : mapIds) {
+                    final LockInfo lockInfo = lockInfoByMapId.get(mapId);
+                    if (lockInfo.isExpired()) {
+                        toRemove.add(mapId);
+                    }
+                }
+
+                for (Integer mapId : toRemove) {
+                    unlock(mapId);
+                }
+            }
+        }, ONE_MINUTE_MILLISECONDS, ONE_MINUTE_MILLISECONDS);
+    }
+
+    @Override
+    public boolean isLocked(@NotNull Mindmap mindmap) {
+        return this.getLockInfo(mindmap) != null;
+    }
+
+    @Override
+    public LockInfo getLockInfo(@NotNull Mindmap mindmap) {
+        return lockInfoByMapId.get(mindmap.getId());
+    }
+
+    @Override
+    public void updateExpirationTimeout(@NotNull Mindmap mindmap, @NotNull Collaborator user) {
+        if (this.isLocked(mindmap)) {
+            final LockInfo lockInfo = this.getLockInfo(mindmap);
+            if (!lockInfo.getCollaborator().equals(user)) {
+                throw new IllegalStateException("Could not update map lock timeout if you are not the locking user. User:" + lockInfo.getCollaborator() + ", " + user);
+            }
+            lockInfo.updateTimeout();
+            logger.debug("Timeout updated for:" + mindmap.getId());
+
+        }else {
+            throw new IllegalStateException("Lock lost for map. No update possible.");
+        }
+    }
+
+    @Override
+    public void unlock(@NotNull Mindmap mindmap, @NotNull Collaborator user) throws LockException, AccessDeniedSecurityException {
+        if (isLocked(mindmap) && !isLockedBy(mindmap, user)) {
+            throw new LockException("Lock can be only revoked by the locker.");
+        }
+
+        if (!mindmap.hasPermissions(user, CollaborationRole.EDITOR)) {
+            throw new AccessDeniedSecurityException("Invalid lock, this should not happen");
+        }
+
+        this.unlock(mindmap.getId());
+    }
+
+    private void unlock(int mapId) {
+        logger.debug("Unlock map id:" + mapId);
+        lockInfoByMapId.remove(mapId);
+    }
+
+    @Override
+    public boolean isLockedBy(@NotNull Mindmap mindmap, @NotNull Collaborator collaborator) {
+        boolean result = false;
+        final LockInfo lockInfo = this.getLockInfo(mindmap);
+        if (lockInfo != null && lockInfo.getCollaborator().equals(collaborator)) {
+            result = true;
+        }
+        return result;
+    }
+
+    @Override
+    public void lock(@NotNull Mindmap mindmap, @NotNull Collaborator user) throws AccessDeniedSecurityException, LockException {
+        if (isLocked(mindmap) && !isLockedBy(mindmap, user)) {
+            throw new LockException("Invalid lock, this should not happen");
+        }
+
+        if (!mindmap.hasPermissions(user, CollaborationRole.EDITOR)) {
+            throw new AccessDeniedSecurityException("Invalid lock, this should not happen");
+        }
+
+        final LockInfo lockInfo = lockInfoByMapId.get(mindmap.getId());
+        if (lockInfo != null) {
+            // Update timeout only...
+            logger.debug("Update timestamp:" + mindmap.getId());
+            updateExpirationTimeout(mindmap, user);
+        } else {
+            logger.debug("Lock map id:" + mindmap.getId());
+            lockInfoByMapId.put(mindmap.getId(), new LockInfo(user));
+        }
+
+    }
+
+    @Override
+    public void updateLock(boolean lock, @NotNull Mindmap mindmap, @NotNull User user) throws WiseMappingException {
+        if (lock) {
+            this.lock(mindmap, user);
+        } else {
+            this.unlock(mindmap, user);
+        }
+    }
+}

wise-webapp/src/main/java/com/wisemapping/service/MindmapService.java

@@ -62,4 +62,6 @@ public interface MindmapService {
     MindMapHistory findMindmapHistory(int id, int hid) throws WiseMappingException;
 
     void updateCollaboration(@NotNull Collaborator collaborator, @NotNull Collaboration collaboration) throws WiseMappingException;
+
+    LockManager getLockManager();
 }

wise-webapp/src/main/java/com/wisemapping/service/MindmapServiceImpl.java

@@ -45,6 +45,11 @@ public class MindmapServiceImpl
     private NotificationService notificationService;
 
     private String adminUser;
+    final private LockManager lockManager;
+
+    public MindmapServiceImpl() {
+        this.lockManager = new LockManagerImpl();
+    }
 
     @Override
     public boolean hasPermissions(@Nullable User user, int mapId, @NotNull CollaborationRole grantedRole) {
@@ -94,6 +99,11 @@ public class MindmapServiceImpl
         if (mindMap.getTitle() == null || mindMap.getTitle().length() == 0) {
             throw new WiseMappingException("The tile can not be empty");
         }
+
+        // Update edition timeout ...
+        final LockManager lockManager = this.getLockManager();
+        lockManager.updateExpirationTimeout(mindMap, Utils.getUser());
+
         mindmapManager.updateMindmap(mindMap, saveHistory);
     }
 
@@ -264,6 +274,12 @@ public class MindmapServiceImpl
         mindmapManager.updateCollaboration(collaboration);
     }
 
+    @Override
+    @NotNull
+    public LockManager getLockManager() {
+        return this.lockManager;
+    }
+
     private Collaboration getCollaborationBy(String email, Set<Collaboration> collaborations) {
         Collaboration collaboration = null;
 

wise-webapp/src/main/resources/messages_en.properties

@@ -249,7 +249,7 @@ DIRECT_LINK_EXPLANATION=Copy and paste the link below to share your map with col
 TEMPORAL_PASSWORD_SENT=Your temporal password has been sent
 TEMPORAL_PASSWORD_SENT_DETAILS=We've sent you an email that will allow you to reset your password. Please check your email now.
 TEMPORAL_PASSWORD_SENT_SUPPORT=If you have any problem receiving the email, contact us to  <a href\="mailto\:support@wisemapping.com">support@wisemapping.com </a>
-
+MINDMAP_TIMESTAMP_OUTDATED=It's not possible to save your changes because your mindmap is out of date. Refresh the page and try again.
 
 
 

wise-webapp/src/main/webapp/WEB-INF/classes/log4j.properties

@@ -1,8 +1,9 @@
 log4j.rootLogger=WARN, stdout, R
+log4j.logger.com.wisemapping.service.LockManager=DEBUG,stdout,R
 log4j.logger.com.wisemapping=WARN,stdout,R
 log4j.logger.org.springframework=WARN,stdout,R
 log4j.logger.org.codehaus.jackson=WARN,stdout,R
-log4j.logger.org.hibernate=DEBUG,stdout,R
+log4j.logger.org.hibernate=WARN,stdout,R
 log4j.logger.org.hibernate.SQL=true
 
 

wise-webapp/src/main/webapp/jsp/mindmapEditor.jsp

@@ -35,7 +35,7 @@
                 // Configure designer options ...
                 var options = loadDesignerOptions();
             <c:if test="${!memoryPersistence}">
-                options.persistenceManager = new mindplot.RESTPersistenceManager("service/maps/{id}/document", "service/maps/{id}/history/latest");
+                options.persistenceManager = new mindplot.RESTPersistenceManager("service/maps/{id}/document", "service/maps/{id}/history/latest","service/maps/{id}/lock");
             </c:if>
                 var userOptions = ${mindmap.properties};
                 options.zoom = userOptions.zoom;

wise-webapp/src/test/resources/data/freemind/node-styles.mmr

@@ -43,4 +43,4 @@
             </node>
         </node>
     </node>
-</map>
+</map>