Need a field marshaller for Integer fields.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1272 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/io/FieldMarshallerRegistry.java

@@ -1,5 +1,5 @@
 //
-// $Id: FieldMarshallerRegistry.java,v 1.14 2002/03/20 22:58:26 mdb Exp $
+// $Id: FieldMarshallerRegistry.java,v 1.15 2002/04/17 22:45:32 mdb Exp $
 
 package com.threerings.presents.io;
 
@@ -92,6 +92,7 @@ public class FieldMarshallerRegistry
         registerMarshaller(ByteFieldMarshaller.class);
         registerMarshaller(ShortFieldMarshaller.class);
         registerMarshaller(IntFieldMarshaller.class);
+        registerMarshaller(IntegerFieldMarshaller.class);
         registerMarshaller(LongFieldMarshaller.class);
         registerMarshaller(FloatFieldMarshaller.class);
         registerMarshaller(DoubleFieldMarshaller.class);

src/java/com/threerings/presents/io/IntegerFieldMarshaller.java

@@ -0,0 +1,29 @@
+//
+// $Id: IntegerFieldMarshaller.java,v 1.1 2002/04/17 22:45:32 mdb Exp $
+
+package com.threerings.presents.io;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Field;
+
+public class IntegerFieldMarshaller implements FieldMarshaller
+{
+    /** This is the sort of field that we marshall. */
+    public Integer prototype;
+
+    public void writeTo (DataOutputStream out, Field field, Object obj)
+        throws IOException, IllegalAccessException
+    {
+        Integer value = (Integer)field.get(obj);
+        // we convert null integers to zero
+        out.writeInt((value == null) ? 0 : value.intValue());
+    }
+
+    public void readFrom (DataInputStream in, Field field, Object obj)
+        throws IOException, IllegalAccessException
+    {
+        field.set(obj, new Integer(in.readInt()));
+    }
+}