From 3f8d6dacab8781f02993310abcc57ec5da0e966a Mon Sep 17 00:00:00 2001
From: Kevin Roast <kevin.roast@alfresco.com>
Date: Fri, 18 Apr 2008 14:43:20 +0000
Subject: [PATCH] Merged V2.1-A to HEAD    7983: NodeRef + child path relative
 URLs support for WebScript download content API

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@8839 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
---
 .../alfresco/repo/web/scripts/Repository.java | 37 ++++++++++++++++---
 .../repo/web/scripts/bean/ContentGet.java     | 22 +++++++++++
 2 files changed, 54 insertions(+), 5 deletions(-)

diff --git a/source/java/org/alfresco/repo/web/scripts/Repository.java b/source/java/org/alfresco/repo/web/scripts/Repository.java
index dacc91f3b5..8ceb632531 100644
--- a/source/java/org/alfresco/repo/web/scripts/Repository.java
+++ b/source/java/org/alfresco/repo/web/scripts/Repository.java
@@ -24,6 +24,7 @@
  */
 package org.alfresco.repo.web.scripts;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
@@ -361,13 +362,39 @@ public class Repository implements ApplicationContextAware, ApplicationListener,
 	        {
 	            if (referenceType.equals("node"))
 	            {
-	                NodeRef urlRef = new NodeRef(storeRef, reference[2]);
-	                if (nodeService.exists(urlRef))
+	                // find the node the rest of the path is relative to
+	                NodeRef relRef = new NodeRef(storeRef, reference[2]);
+	                if (nodeService.exists(relRef))
 	                {
-	                    nodeRef = urlRef;
+	                    // are there any relative path elements to process?
+	                    if (reference.length == 3 || reference.length == 4)
+	                    {
+	                        // just the NodeRef can be specified
+	                        nodeRef = relRef;
+	                    }
+	                    else
+	                    {
+	                        // process optional path elements
+	                        List<String> paths = new ArrayList<String>(reference.length - 3);
+	                        for (int i=3; i<reference.length; i++)
+	                        {
+	                            paths.add(reference[i]);
+	                        }
+
+	                        try
+	                        {
+	                            NodeRef parentRef = nodeService.getPrimaryParent(relRef).getParentRef();
+	                            FileInfo fileInfo = fileFolderService.resolveNamePath(parentRef, paths);
+	                            nodeRef = fileInfo.getNodeRef();
+	                        }
+	                        catch (FileNotFoundException e)
+	                        {
+	                            // NOTE: return null node ref
+	                        }
+	                    }
 	                }
 	            }
-	            
+                
 	            else if (referenceType.equals("path"))
 	            {
                     // NOTE: special case for avm based path
@@ -388,7 +415,7 @@ public class Repository implements ApplicationContextAware, ApplicationListener,
                     else
                     {
 		                // TODO: Allow a root path to be specified - for now, hard-code to Company Home
-	//                NodeRef rootNodeRef = nodeService.getRootNode(storeRef);
+	                    //NodeRef rootNodeRef = nodeService.getRootNode(storeRef);
 		                NodeRef rootNodeRef = getCompanyHome();
 		                if (reference.length == 3)
 		                {
diff --git a/source/java/org/alfresco/repo/web/scripts/bean/ContentGet.java b/source/java/org/alfresco/repo/web/scripts/bean/ContentGet.java
index f69cc2f8c7..8ac63a248a 100644
--- a/source/java/org/alfresco/repo/web/scripts/bean/ContentGet.java
+++ b/source/java/org/alfresco/repo/web/scripts/bean/ContentGet.java
@@ -26,6 +26,7 @@ package org.alfresco.repo.web.scripts.bean;
 
 import java.io.IOException;
 import java.net.SocketException;
+import java.text.MessageFormat;
 import java.util.Arrays;
 import java.util.Date;
 
@@ -45,6 +46,7 @@ import org.alfresco.service.cmr.security.AccessStatus;
 import org.alfresco.service.cmr.security.PermissionService;
 import org.alfresco.service.namespace.NamespaceService;
 import org.alfresco.service.namespace.QName;
+import org.alfresco.util.URLEncoder;
 import org.alfresco.web.scripts.AbstractWebScript;
 import org.alfresco.web.scripts.Cache;
 import org.alfresco.web.scripts.WebScriptException;
@@ -68,6 +70,8 @@ public class ContentGet extends AbstractWebScript
     // Logger
     private static final Log logger = LogFactory.getLog(ContentGet.class);
     
+    private static final String NODE_URL   = "/api/node/content/{0}/{1}/{2}/{3}";
+    
     // Component dependencies
     private Repository repository;
     private NamespaceService namespaceService;
@@ -258,4 +262,22 @@ public class ContentGet extends AbstractWebScript
         }
     }
     
+    /**
+     * Helper to generate a URL to a content node for downloading content from the server.
+     * The content is supplied directly in the reponse. This generally means a browser will
+     * attempt to open the content directly if possible, else it will prompt to save the file.
+     *
+     * @param ref     NodeRef of the content node to generate URL for (cannot be null)
+     * @param name    File name end element to return on the url (used by the browser on Save)
+     *
+     * @return URL to download the content from the specified node
+     */
+    public final static String generateNodeURL(NodeRef ref, String name)
+    {
+        return MessageFormat.format(NODE_URL, new Object[] {
+                ref.getStoreRef().getProtocol(),
+                ref.getStoreRef().getIdentifier(),
+                ref.getId(),
+                URLEncoder.encode(name) } );
+    }
 }
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