* Make check for _prototype and _name column case insensitive when inserting relational objects

* Implemented feature to evict certain prototypes from cache when they are received via replication.
   To activate this, add the line
        _evictOnReplication = true
  to the type.property file

src/helma/objectmodel/db/DbMapping.java

@@ -110,6 +110,9 @@ public final class DbMapping implements Updatable {
     // timestamp of last modification of an object of this type
     long lastDataChange;
 
+    // evict objects of this type when received via replication
+    private boolean evictOnReplication;
+
     /**
      * Create an empty DbMapping
      */
@@ -194,6 +197,8 @@ public final class DbMapping implements Updatable {
 
         String parentSpec = props.getProperty("_parent");
 
+        evictOnReplication = "true".equals(props.getProperty("_evictOnReplication"));
+
         if (parentSpec != null) {
             // comma-separated list of properties to be used as parent
             StringTokenizer st = new StringTokenizer(parentSpec, ",;");
@@ -459,6 +464,14 @@ public final class DbMapping implements Updatable {
         return protoField;
     }
 
+    /**
+     * Should objects of this type be evicted/discarded/reloaded when received via
+     * cache replication?
+     */
+    public boolean evictOnReplication() {
+        return evictOnReplication;
+    }
+
     /**
      * Translate a database column name to an object property name according to this mapping.
      */

src/helma/objectmodel/db/NodeManager.java

@@ -507,7 +507,7 @@ public final class NodeManager {
             String name = columns[i].getName();
 
             if (((rel != null) && (rel.isPrimitive() || rel.isReference())) ||
-                    name.equals(nameField) || name.equals(prototypeField)) {
+                    name.equalsIgnoreCase(nameField) || name.equalsIgnoreCase(prototypeField)) {
                 b1.append(", " + columns[i].getName());
                 b2.append(", ?");
             }
@@ -1967,10 +1967,19 @@ public final class NodeManager {
                     dbm.setLastDataChange(now);
                 }
 
-                n.lastParentSet = -1;
                 n.setDbMapping(dbm);
                 n.nmgr = safe;
-                cache.put(n.getKey(), n);
+
+                if (dbm != null && dbm.evictOnReplication()) {
+                    Node oldNode = (Node) cache.get(n.getKey());
+
+                    if (oldNode != null) {
+                        evictNode(oldNode);
+                    }
+                } else {
+                    n.lastParentSet = -1;
+                    cache.put(n.getKey(), n);
+                }
             }
 
             for (Enumeration en = delete.elements(); en.hasMoreElements();) {