--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/dancres/blitz/entry/LeaseTrackerFactory.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,57 @@
+package org.dancres.blitz.entry;
+
+import java.io.IOException;
+
+import org.dancres.blitz.lease.LeaseReaper;
+import org.dancres.blitz.lease.ReapFilter;
+
+import org.dancres.blitz.oid.Allocator;
+
+class LeaseTrackerFactory {
+    /**
+       Create a LeaseTracker capable of managing all leases for a particular
+       entry type which is using a particular Allocator instance to assign ids.
+     */
+    static LeaseTracker getTracker(String aType, Allocator anAllocator)
+        throws IOException {
+
+        if (EntryRepositoryFactory.getReaper().isActive())
+            return new LeaseTrackerImpl(aType,
+                                        anAllocator.getMaxZoneId());
+        else
+            return new NullTrackerImpl(aType);
+    }
+
+    private static class NullTrackerImpl implements LeaseTracker {
+        private String theType;
+
+        NullTrackerImpl(String aType) {
+            // System.err.println("NullTracker: " + aType);
+            theType = aType;
+        }
+
+        public void bringOutTheDead(EntryReaper aReaper) {
+            // Do nothing
+        }
+
+        public void delete(PersistentEntry anEntry) throws IOException {
+            // Do nothing
+        }
+
+        public void update(PersistentEntry anEntry) throws IOException {
+            // Do nothing
+        }
+
+        public void write(PersistentEntry anEntry) throws IOException {
+            // Do nothing
+        }
+
+        public void close() throws IOException {
+            // Do nothing
+        }
+
+        public void delete() throws IOException {
+            // Do nothing
+        }
+    }
+}