From 985138446cfaa3485ed43a124b02a21c497d900d Mon Sep 17 00:00:00 2001
From: David Caruana <david.caruana@alfresco.com>
Date: Fri, 13 Jan 2006 16:01:38 +0000
Subject: [PATCH] Addition of Update Node import strategy

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2110 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
---
 .../repo/importer/ImporterComponent.java      | 60 +++++++++++++++++++
 .../service/cmr/view/ImporterBinding.java     |  2 +-
 2 files changed, 61 insertions(+), 1 deletion(-)

diff --git a/source/java/org/alfresco/repo/importer/ImporterComponent.java b/source/java/org/alfresco/repo/importer/ImporterComponent.java
index eefa2a056f..40668fa912 100644
--- a/source/java/org/alfresco/repo/importer/ImporterComponent.java
+++ b/source/java/org/alfresco/repo/importer/ImporterComponent.java
@@ -418,6 +418,10 @@ public class ImporterComponent
             {
                 return new ReplaceExistingNodeImporterStrategy();
             }
+            else if (uuidBinding.equals(UUID_BINDING.UPDATE_EXISTING))
+            {
+                return new UpdateExistingNodeImporterStrategy();
+            }
             else if (uuidBinding.equals(UUID_BINDING.THROW_ON_COLLISION))
             {
                 return new ThrowOnCollisionNodeImporterStrategy();
@@ -1121,6 +1125,62 @@ public class ImporterComponent
                 return createNewStrategy.importNode(node);
             }
         }
+        
+        /**
+         * Import strategy where imported nodes are updated if a node with the same UUID
+         * already exists in the repository.
+         * 
+         * Note: this will only allow incremental update of an existing node - it does not
+         *       delete properties or associations.
+         */
+        private class UpdateExistingNodeImporterStrategy implements NodeImporterStrategy
+        {
+            private NodeImporterStrategy createNewStrategy = new CreateNewNodeImporterStrategy(false);
+            
+            /*
+             *  (non-Javadoc)
+             * @see org.alfresco.repo.importer.ImporterComponent.NodeImporterStrategy#importNode(org.alfresco.repo.importer.ImportNode)
+             */
+            public NodeRef importNode(ImportNode node)
+            {
+                // replace existing node, if node to import has a UUID and an existing node of the same
+                // uuid already exists
+                String uuid = node.getUUID();
+                if (uuid != null && uuid.length() > 0)
+                {
+                    NodeRef existingNodeRef = new NodeRef(rootRef.getStoreRef(), uuid);
+                    if (nodeService.exists(existingNodeRef))
+                    {
+                        // do the update
+                        Map<QName, Serializable> existingProperties = nodeService.getProperties(existingNodeRef);
+                        Map<QName, Serializable> updateProperties = bindProperties(node);
+                        existingProperties.putAll(updateProperties);
+                        nodeService.setProperties(existingNodeRef, existingProperties);
+                        
+                        // Apply permissions
+                        boolean inheritPermissions = node.getInheritPermissions();
+                        if (!inheritPermissions)
+                        {
+                            permissionService.setInheritParentPermissions(existingNodeRef, false);
+                        }
+                        List<AccessPermission> permissions = node.getAccessControlEntries();
+                        for (AccessPermission permission : permissions)
+                        {
+                            permissionService.setPermission(existingNodeRef, permission.getAuthority(), permission.getPermission(), permission.getAccessStatus().equals(AccessStatus.ALLOWED));
+                        }
+
+                        // report update
+                        reportPropertySet(existingNodeRef, updateProperties);
+                        reportPermissionSet(existingNodeRef, permissions);
+                        
+                        return existingNodeRef;
+                    }
+                }
+                
+                // import as if a new node
+                return createNewStrategy.importNode(node);
+            }
+        }
     }
 
     /**
diff --git a/source/java/org/alfresco/service/cmr/view/ImporterBinding.java b/source/java/org/alfresco/service/cmr/view/ImporterBinding.java
index 6f79f100b5..8146a9d4d7 100644
--- a/source/java/org/alfresco/service/cmr/view/ImporterBinding.java
+++ b/source/java/org/alfresco/service/cmr/view/ImporterBinding.java
@@ -30,7 +30,7 @@ public interface ImporterBinding
      */
     public enum UUID_BINDING
     {
-        CREATE_NEW, REMOVE_EXISTING, REPLACE_EXISTING, THROW_ON_COLLISION
+        CREATE_NEW, REMOVE_EXISTING, REPLACE_EXISTING, UPDATE_EXISTING, THROW_ON_COLLISION
     }
 
     /**