From 4def8eed1ea09037075674ad2a9de718ef78bad9 Mon Sep 17 00:00:00 2001
From: hns <hannesw@gmail.com>
Date: Fri, 13 May 2005 14:45:42 +0000
Subject: [PATCH] Implement NodeManager.getRootNode() and
 NodeManager.isRootNode() that allow to get the app's root node and check if a
 node is the root node, respectively

---
 src/helma/objectmodel/db/Node.java            | 13 ++++++------
 src/helma/objectmodel/db/NodeManager.java     | 16 ++++++++++++++
 .../objectmodel/db/WrappedNodeManager.java    | 21 +++++++++++++++++++
 3 files changed, 43 insertions(+), 7 deletions(-)

diff --git a/src/helma/objectmodel/db/Node.java b/src/helma/objectmodel/db/Node.java
index 82e0278e..1e6261d4 100644
--- a/src/helma/objectmodel/db/Node.java
+++ b/src/helma/objectmodel/db/Node.java
@@ -740,8 +740,7 @@ public final class Node implements INode, Serializable {
 
                 // the parent of this node is the app's root node...
                 if ((pn == null) && pinfo.isroot) {
-                    pn = nmgr.getNode(nmgr.nmgr.app.getProperty("rootid", "0"), 
-                                      nmgr.getDbMapping("root"));
+                    pn = nmgr.getRootNode();
                 }
 
                 // if we found a parent node, check if we ought to use a virtual or groupby node as parent
@@ -943,7 +942,7 @@ public final class Node implements INode, Serializable {
                 }
             }
 
-            if (node != this && !"root".equalsIgnoreCase(node.getPrototype())) {
+            if (node != this && !nmgr.isRootNode(node)) {
                 // avoid calling getParent() because it would return bogus results
                 // for the not-anymore transient node
                 Node nparent = (node.parentHandle == null) ? null
@@ -1146,7 +1145,7 @@ public final class Node implements INode, Serializable {
             //    if (dbmap != null && dbmap.getSubnodeRelation () != null)
             //         retval = nmgr.getNode (this, subid, dbmap.getSubnodeRelation ());
             if ((retval != null) && (retval.parentHandle == null) &&
-                    !"root".equalsIgnoreCase(retval.getPrototype())) {
+                    !nmgr.isRootNode(retval)) {
                 retval.setParent(this);
                 retval.anonymous = true;
             }
@@ -1176,7 +1175,7 @@ public final class Node implements INode, Serializable {
             retval = ((NodeHandle) subnodes.get(index)).getNode(nmgr);
 
             if ((retval != null) && (retval.parentHandle == null) &&
-                    !"root".equalsIgnoreCase(retval.getPrototype())) {
+                    !nmgr.isRootNode(retval)) {
                 retval.setParent(this);
                 retval.anonymous = true;
             }
@@ -1731,7 +1730,7 @@ public final class Node implements INode, Serializable {
 
                 if (n != null) {
                     if ((n.parentHandle == null) &&
-                            !"root".equalsIgnoreCase(n.getPrototype())) {
+                            !nmgr.isRootNode(n)) {
                         n.setParent(this);
                         n.name = propname;
                         n.anonymous = false;
@@ -2235,7 +2234,7 @@ public final class Node implements INode, Serializable {
 
         // check if the main identity of this node is as a named property
         // or as an anonymous node in a collection
-        if (n != this && !"root".equalsIgnoreCase(n.getPrototype())) {
+        if (n != this && !nmgr.isRootNode(n)) {
             // avoid calling getParent() because it would return bogus results
             // for the not-anymore transient node
             Node nparent = (n.parentHandle == null) ? null
diff --git a/src/helma/objectmodel/db/NodeManager.java b/src/helma/objectmodel/db/NodeManager.java
index 9e577dfe..d47dc24e 100644
--- a/src/helma/objectmodel/db/NodeManager.java
+++ b/src/helma/objectmodel/db/NodeManager.java
@@ -97,6 +97,22 @@ public final class NodeManager {
         db.init(dbHome, app);
     }
 
+    /**
+     * Gets the application's root node.
+     */
+    public Node getRootNode() throws Exception {
+        DbMapping dbmap = getDbMapping(app.getRootPrototype());
+        DbKey key = new DbKey(dbmap, app.getRootId());
+        return getNode(key);
+    }
+    /**
+     * Checks if the given node is the application's root node.
+     */
+    public boolean isRootNode(Node node) {
+        return app.getRootId().equals(node.getID()) &&
+               app.getRootPrototype().equals(node.getPrototype());
+    }
+
     /**
      *  app.properties file has been updated. Reread some settings.
      */
diff --git a/src/helma/objectmodel/db/WrappedNodeManager.java b/src/helma/objectmodel/db/WrappedNodeManager.java
index a710fb85..513432b6 100644
--- a/src/helma/objectmodel/db/WrappedNodeManager.java
+++ b/src/helma/objectmodel/db/WrappedNodeManager.java
@@ -255,6 +255,27 @@ public final class WrappedNodeManager {
         }
     }
 
+    /**
+     * Gets the application's root node.
+     */
+    public Node getRootNode() {
+        try {
+            return nmgr.getRootNode();
+        } catch (Exception x) {
+            if (nmgr.app.debug()) {
+                x.printStackTrace();
+            }
+            throw new RuntimeException(x.toString());
+        }
+    }
+
+    /**
+     * Checks if the given node is the application's root node.
+     */
+    public boolean isRootNode(Node node) {
+        return nmgr.isRootNode(node);
+    }
+
     /**
      * Get an array of all objects in the object cache
      */