mas 02/02/21 19:17:40
Modified: collections/src/java/org/apache/commons/collections
SequencedHashMap.java
Log:
Implement Externalizable in SequencedHashMap
Revision Changes Path
1.7 +34 -4
jakarta-commons/collections/src/java/org/apache/commons/collections/SequencedHashMap.java
Index: SequencedHashMap.java
===================================================================
RCS file:
/home/cvs/jakarta-commons/collections/src/java/org/apache/commons/collections/SequencedHashMap.java,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -r1.6 -r1.7
--- SequencedHashMap.java 22 Feb 2002 02:37:56 -0000 1.6
+++ SequencedHashMap.java 22 Feb 2002 03:17:40 -0000 1.7
@@ -1,7 +1,7 @@
/*
- * $Header:
/home/cvs/jakarta-commons/collections/src/java/org/apache/commons/collections/SequencedHashMap.java,v
1.6 2002/02/22 02:37:56 mas Exp $
- * $Revision: 1.6 $
- * $Date: 2002/02/22 02:37:56 $
+ * $Header:
/home/cvs/jakarta-commons/collections/src/java/org/apache/commons/collections/SequencedHashMap.java,v
1.7 2002/02/22 03:17:40 mas Exp $
+ * $Revision: 1.7 $
+ * $Date: 2002/02/22 03:17:40 $
*
* ====================================================================
*
@@ -60,6 +60,11 @@
*/
package org.apache.commons.collections;
+import java.io.Externalizable;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.io.IOException;
+
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
@@ -91,7 +96,7 @@
* @author <a href="mailto:[EMAIL PROTECTED]";>Daniel Rall</a>
* @author <a href="mailto:[EMAIL PROTECTED]";>Henning P. Schmiedehausen</a>
*/
-public class SequencedHashMap implements Map, Cloneable {
+public class SequencedHashMap implements Map, Cloneable, Externalizable {
/**
* {@link java.util.Map.Entry} that doubles as a node in the linked list
@@ -878,5 +883,30 @@
{
return remove(get(index));
}
+
+ // per Externalizable.readExternal(ObjectInput)
+ public void readExternal( ObjectInput in )
+ throws IOException, ClassNotFoundException
+ {
+ int size = in.readInt();
+ for(int i = 0; i < size; i++) {
+ Object key = in.readObject();
+ Object value = in.readObject();
+ put(key, value);
+ }
+ }
+
+ // per Externalizable.writeExternal(ObjectOutput)
+ public void writeExternal( ObjectOutput out ) throws IOException {
+ out.writeInt(size());
+ for(Entry pos = sentinel.next; pos != sentinel; pos = pos.next) {
+ out.writeObject(pos.getKey());
+ out.writeObject(pos.getValue());
+ }
+ }
+
+ // add a serial version uid, so that if we change things in the future
+ // without changing the format, we can still deserialize properly.
+ private static final long serialVersionUID = 3380552487888102930L;
}
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