--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/dancres/blitz/config/EntryConstraint.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,30 @@
+package org.dancres.blitz.config;
+
+/**
+   <p>Marker interface indicating a per-Entry type configuration variable.
+   EntryConstraints are per Entry-type requirements to
+   be asserted against such things as search behaviour.</p>
+
+   <p>Per-Entry constraints are setup in the .config file as follows:
+   </p>
+
+   <ol>
+   <li> Define a variable using the classname of the type,
+   replaceing . or $ with _.
+   </li>
+   <li>The variable should then be initialized to an array of
+   EntryConstraints specifying requirements.
+   </li>
+   </ol>
+
+   <p>Here's an example that specifies a per-type cache size which overrides
+   the global default specified in <code>entryReposCacheSize</code> and
+   enables FIFO ordering for searches and writes of this class.</p>
+
+   <pre>
+   org_dancres_blitz_SpaceFifonessTest_TestEntry =
+            new EntryConstraint[] {new CacheSize(1024), new Fifo()};
+   </pre>
+ */
+public interface EntryConstraint {
+}
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