X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2Futil%2FVisitableMap.java;fp=src%2Fedu%2Fberkeley%2Fsbp%2Futil%2FVisitableMap.java;h=944f8916a30e4d6a8eeba2b42c439d1d97a26b56;hp=314f55e3d9e2f586e0f30e1934597f395878b834;hb=eeb3a8b49bdbf753b5a70734fbae7f2c1ac06702;hpb=61a0c83fd40b98292b2dfe1eaba237eb804b2cb4

diff --git a/src/edu/berkeley/sbp/util/VisitableMap.java b/src/edu/berkeley/sbp/util/VisitableMap.java
index 314f55e..944f891 100644
--- a/src/edu/berkeley/sbp/util/VisitableMap.java
+++ b/src/edu/berkeley/sbp/util/VisitableMap.java
@@ -2,9 +2,10 @@
 
 package edu.berkeley.sbp.util;
 import java.util.*;
+import java.io.*;
 
 /** a Map that knows how to apply an Invokable to all its elements */
-public interface VisitableMap<K,V> {
+public interface VisitableMap<K,V> extends Serializable {
 
     /** invokes <tt>ivbc</tt> on each element of this map, passing constant arguments <tt>b</tt> and <tt>c</tt> */
     public <B> void invoke(K k, Invokable<V,B> ivbc, B b);