Merge JS Versions API from DEV/SEAMIST r9707

http://wiki.alfresco.com/wiki/JavaScript_API_3.0#Versions_API

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@9816 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/jscript/ScriptNode.java

@@ -29,6 +29,7 @@ import java.io.Serializable;
 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -71,6 +72,7 @@ import org.alfresco.service.cmr.security.AccessPermission;
 import org.alfresco.service.cmr.security.AccessStatus;
 import org.alfresco.service.cmr.security.PermissionService;
 import org.alfresco.service.cmr.version.Version;
+import org.alfresco.service.cmr.version.VersionHistory;
 import org.alfresco.service.cmr.version.VersionType;
 import org.alfresco.service.namespace.NamespaceService;
 import org.alfresco.service.namespace.QName;
@@ -142,7 +144,10 @@ public class ScriptNode implements Serializable, Scopeable
     
     /** The properties of this node */
     private ScriptableQNameMap<String, Serializable> properties = null;
-    
+
+    /** The versions of this node */
+    private Scriptable versions = null;
+
     protected ServiceRegistry services = null;
     private NodeService nodeService = null;
     private Boolean isDocument = null;
@@ -1522,6 +1527,78 @@ public class ScriptNode implements Serializable, Scopeable
     
     // ------------------------------------------------------------------------------
     // Checkout/Checkin Services
+
+    /**
+     * Create a version of this document.  Note: this will add the cm:versionable aspect.
+     * 
+     * @param history       Version history note
+     * @param majorVersion  True to save as a major version increment, false for minor version.
+     */
+    public ScriptVersion createVersion(String history, boolean majorVersion)
+    {
+        Map<String, Serializable> props = new HashMap<String, Serializable>(2, 1.0f);
+        props.put(Version.PROP_DESCRIPTION, history);
+        props.put(VersionModel.PROP_VERSION_TYPE, majorVersion ? VersionType.MAJOR : VersionType.MINOR);
+        ScriptVersion version = new ScriptVersion(this.services.getVersionService().createVersion(this.nodeRef, props), this.services, this.scope);
+        this.versions = null;
+        return version;
+    }
+
+    /**
+     * Determines if this node is versioned
+     * 
+     * @return  true => is versioned
+     */
+    public boolean getIsVersioned()
+    {
+        return this.nodeService.hasAspect(this.nodeRef, ContentModel.ASPECT_VERSIONABLE);
+    }
+    
+    /**
+     * Gets the version history
+     * 
+     * @return  version history
+     */
+    public Scriptable getVersionHistory()
+    {
+        if (this.versions == null && getIsVersioned())
+        {
+            VersionHistory history = this.services.getVersionService().getVersionHistory(this.nodeRef);
+            if (history != null)
+            {
+                Collection<Version> allVersions = history.getAllVersions();
+                Object[] versions = new Object[allVersions.size()];
+                int i = 0;
+                for (Version version : allVersions)
+                {
+                    versions[i++] = new ScriptVersion(version, this.services, this.scope);
+                }
+                this.versions = Context.getCurrentContext().newArray(this.scope, versions);
+            }
+        }
+        return this.versions;
+    }
+    
+    /**
+     * Gets the version of this node specified by version label
+     * 
+     * @param versionLabel  version label
+     * @return  version of node, or null if node is not versioned, or label does not exist
+     */
+    public ScriptVersion getVersion(String versionLabel)
+    {
+        if (!getIsVersioned())
+        {
+            return null;
+        }
+        VersionHistory history = this.services.getVersionService().getVersionHistory(this.nodeRef);
+        Version version = history.getVersion(versionLabel);
+        if (version == null)
+        {
+            return null;
+        }
+        return new ScriptVersion(version, this.services, this.scope); 
+    }
     
     /**
      * Perform a check-out of this document into the current parent space.
@@ -1605,6 +1682,7 @@ public class ScriptNode implements Serializable, Scopeable
         props.put(Version.PROP_DESCRIPTION, history);
         props.put(VersionModel.PROP_VERSION_TYPE, majorVersion ? VersionType.MAJOR : VersionType.MINOR);
         NodeRef original = this.services.getCheckOutCheckInService().checkin(this.nodeRef, props);
+        this.versions = null;
         return newInstance(original, this.services, this.scope);
     }
     
@@ -1620,8 +1698,7 @@ public class ScriptNode implements Serializable, Scopeable
         NodeRef original = this.services.getCheckOutCheckInService().cancelCheckout(this.nodeRef);
         return newInstance(original, this.services, this.scope);
     }
-    
+        
-    
     // ------------------------------------------------------------------------------
     // Transformation and Rendering API
     

source/java/org/alfresco/repo/jscript/ScriptVersion.java

@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2005-2007 Alfresco Software Limited.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+ * As a special exception to the terms and conditions of version 2.0 of 
+ * the GPL, you may redistribute this Program in connection with Free/Libre 
+ * and Open Source Software ("FLOSS") applications as described in Alfresco's 
+ * FLOSS exception.  You should have recieved a copy of the text describing 
+ * the FLOSS exception, and it is also available here: 
+ * http://www.alfresco.com/legal/licensing"
+ */
+package org.alfresco.repo.jscript;
+
+import java.io.Serializable;
+
+import org.alfresco.service.ServiceRegistry;
+import org.alfresco.service.cmr.repository.NodeRef;
+import org.alfresco.service.cmr.version.Version;
+import org.mozilla.javascript.Scriptable;
+
+/**
+ * Scriptable Version
+ * 
+ * @author davidc
+ */
+public final class ScriptVersion implements Serializable
+{
+    private static final long serialVersionUID = 3896177303419746778L;
+
+    /** Root scope for this object */
+    private Scriptable scope;
+    private ServiceRegistry services;
+    private Version version;
+    private static ValueConverter converter = new ValueConverter();
+    
+
+    /**
+     * Construct
+     */
+    public ScriptVersion(Version version, ServiceRegistry services, Scriptable scope)
+    {
+        this.version = version;
+        this.services = services;
+        this.scope = scope;
+    }
+
+    /**
+     * Gets the date the version was created
+     * 
+     * @return  the date the version was created
+     */
+    public Object getCreatedDate()
+    {
+        return converter.convertValueForScript(services, scope, null, version.getCreatedDate());
+    }
+    
+    /**
+     * Gets the creator of the version
+     * 
+     * @return  the creator of the version
+     */
+    public String getCreator()
+    {
+        return version.getCreator();
+    }
+
+    /**
+     * Gets the version label
+     * 
+     * @return  the version label
+     */
+    public String getLabel()
+    {
+        return version.getVersionLabel();
+    }
+    
+    /**
+     * Gets the version type
+     * 
+     * @return  "MAJOR", "MINOR"
+     */
+    public String getType()
+    {
+        return version.getVersionType().name();
+    }
+    
+    /**
+     * Gets the version description (or checkin comment)
+     * 
+     * @return the version description
+     */
+    public String getDescription()
+    {
+        String desc = version.getDescription();
+        return (desc == null) ? "" : desc;
+    }
+
+    /**
+     * Gets the node ref represented by this version
+     * 
+     * @return  node ref
+     */
+    public NodeRef getNodeRef()
+    {
+        return version.getVersionedNodeRef();
+    }
+    
+    /**
+     * Gets the node represented by this version
+     * 
+     * @return  node
+     */
+    public ScriptNode getNode()
+    {
+        return new ScriptNode(version.getFrozenStateNodeRef(), services, scope);
+    }
+    
+}

source/java/org/alfresco/repo/version/NodeServiceImpl.java

@@ -142,7 +142,7 @@ public class NodeServiceImpl implements NodeService, VersionModel
      */
     public boolean exists(StoreRef storeRef)
     {
-        return dbNodeService.exists(storeRef);
+        return dbNodeService.exists(VersionUtil.convertStoreRef(storeRef));
     }
 
     /**

source/java/org/alfresco/repo/version/common/VersionHistoryImpl.java

@@ -26,7 +26,11 @@ package org.alfresco.repo.version.common;
 
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Comparator;
+import java.util.Date;
 import java.util.HashMap;
+import java.util.Map;
+import java.util.TreeMap;
 
 import org.alfresco.service.cmr.version.Version;
 import org.alfresco.service.cmr.version.VersionDoesNotExistException;
@@ -63,8 +67,16 @@ public class VersionHistoryImpl implements VersionHistory
     /*
      * Label to version object map
      */
-    private HashMap<String, Version> versions = null;
+    private HashMap<String, Version> versionsByLabel = null;
     
+    /*
+     * Versions ordered by creation date (descending)
+     */
+    private Map<Date, Version> versions = new TreeMap<Date, Version>(new VersionComparator());
+
+    /**
+     * Root version
+     */
     private Version rootVersion;
     
     /**
@@ -82,7 +94,7 @@ public class VersionHistoryImpl implements VersionHistory
         }
         
         this.versionHistory = new HashMap<String, String>();
-        this.versions = new HashMap<String, Version>();
+        this.versionsByLabel = new HashMap<String, Version>();
         
         this.rootVersion = rootVersion;
         this.rootVersionLabel = rootVersion.getVersionLabel();
@@ -103,7 +115,7 @@ public class VersionHistoryImpl implements VersionHistory
      * Gets a collection containing all the versions within the
      * version history.
      * <p>
-     * The order of the versions is not guarenteed.
+     * Versions are returned in descending create date order.
      * 
      * @return  collection containing all the versions
      */
@@ -170,7 +182,7 @@ public class VersionHistoryImpl implements VersionHistory
         Version result = null;
         if (versionLabel != null)
         {
-            result = this.versions.get(versionLabel);
+            result = this.versionsByLabel.get(versionLabel);
             
             if (result == null)
             {
@@ -193,11 +205,26 @@ public class VersionHistoryImpl implements VersionHistory
     {
         // TODO cope with exception case where duplicate version labels have been specified
         
-        this.versions.put(version.getVersionLabel(), version);
+        this.versionsByLabel.put(version.getVersionLabel(), version);
+        this.versions.put(version.getCreatedDate(), version);
         
         if (predecessor != null)
         {
             this.versionHistory.put(version.getVersionLabel(), predecessor.getVersionLabel());
         }
     }
+
+    /**
+     * Version Comparator
+     * 
+     * Note: Descending create date order 
+     */
+    public class VersionComparator implements Comparator<Date>
+    {
+        public int compare(Date o1, Date o2)
+        {
+            return o2.compareTo(o1);
+        }
+    }
+
 }

source/java/org/alfresco/repo/version/common/VersionUtil.java

@@ -71,6 +71,17 @@ public class VersionUtil
         }
     }
 
+    /**
+     * Create Version Store Ref
+     * 
+     * @param  store ref
+     * @return  store ref for version store
+     */
+    public static StoreRef convertStoreRef(StoreRef storeRef)
+    {
+        return new StoreRef(StoreRef.PROTOCOL_WORKSPACE, storeRef.getIdentifier());
+    }
+    
     /**
      * Convert the incomming node ref (with the version store protocol specified)
      * to the internal representation with the workspace protocol.
@@ -80,6 +91,6 @@ public class VersionUtil
      */
     public static NodeRef convertNodeRef(NodeRef nodeRef)
     {
-        return new NodeRef(new StoreRef(StoreRef.PROTOCOL_WORKSPACE, VersionModel.STORE_ID), nodeRef.getId());
+        return new NodeRef(convertStoreRef(nodeRef.getStoreRef()), nodeRef.getId());
     }
 }