Classes managed by helma.framework.core.Typemanager

implement this interface, but it is generic enough to be
used for other purposes.

src/helma/util/Updatable.java

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+// Updatable.java
+// Copyright (c) Hannes Wallnöfer 2001
+ 
+package helma.util;
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+/**
+ * An interface of classes that can update themselves and know when to do so.
+ */
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+public interface Updatable {
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+    public boolean needsUpdate ();
+
+    public void update ();
+
+}
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