Imported GNU Classpath 0.90

Imported GNU Classpath 0.90
       * scripts/makemake.tcl: Set gnu/java/awt/peer/swing to ignore.
       * gnu/classpath/jdwp/VMFrame.java (SIZE): New constant.
       * java/lang/VMCompiler.java: Use gnu.java.security.hash.MD5.
       * java/lang/Math.java: New override file.
       * java/lang/Character.java: Merged from Classpath.
       (start, end): Now 'int's.
       (canonicalName): New field.
       (CANONICAL_NAME, NO_SPACES_NAME, CONSTANT_NAME): New constants.
       (UnicodeBlock): Added argument.
       (of): New overload.
       (forName): New method.
       Updated unicode blocks.
       (sets): Updated.
       * sources.am: Regenerated.
       * Makefile.in: Likewise.

From-SVN: r111942

libjava/classpath/java/rmi/MarshalledObject.java

@@ -1,5 +1,6 @@
 /* MarshalledObject.java --
-   Copyright (c) 1996, 1997, 1998, 1999, 2004 Free Software Foundation, Inc.
+   Copyright (c) 1996, 1997, 1998, 1999, 2004, 2006 
+   Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
@@ -42,38 +43,68 @@ import gnu.java.rmi.RMIMarshalledObjectInputStream;
 import gnu.java.rmi.RMIMarshalledObjectOutputStream;
 
 import java.io.ByteArrayOutputStream;
+import java.io.IOException;
 import java.io.Serializable;
 
 /**
- * FIXME - doc missing
+ * A <code>MarshalledObject</code> consists of a serialized object which is
+ * marshalled according to the RMI specification.
+ * <p>
+ * An object passed to the constructor is serialized and tagged with the needed
+ * URL to retrieve its class definition for remote usage. If the object is a 
+ * remote reference its stub is serialized instead. The instance of this 
+ * marshalled object can be later retrieved by its <code>get()</code> method.
+ * </p>
+ *
+ * @author unknown
  */
-public final class MarshalledObject implements Serializable 
+public final class MarshalledObject
+  implements Serializable
 {
-  //The following fields are from Java API Documentation "Serialized form"
+  // The following fields are from Java API Documentation "Serialized form"
   private static final long serialVersionUID = 8988374069173025854L;
+
   byte[] objBytes;
   byte[] locBytes;
   int hash;
-  
-  public MarshalledObject(Object obj) throws java.io.IOException
+
+  /**
+   * Constructs a <code>MarshalledObject</code> from the given object.
+   * 
+   * @param obj the object to marshal
+   * @throws IOException if an I/O error during serialization occurs.
+   */
+  public MarshalledObject(Object obj) throws IOException
   {
     ByteArrayOutputStream objStream = new ByteArrayOutputStream();
-    RMIMarshalledObjectOutputStream stream = new RMIMarshalledObjectOutputStream(objStream);
+    RMIMarshalledObjectOutputStream stream = 
+      new RMIMarshalledObjectOutputStream(objStream);
     stream.writeObject(obj);
     stream.flush();
     objBytes = objStream.toByteArray();
     locBytes = stream.getLocBytes();
-    
-    //The following algorithm of calculating hashCode is similar to String
+
+    // The following algorithm of calculating hashCode is similar to String
     hash = 0;
     for (int i = 0; i < objBytes.length; i++)
       hash = hash * 31 + objBytes[i];
-    if(locBytes != null)
+    
+    if (locBytes != null)
       for (int i = 0; i < locBytes.length; i++)
-	hash = hash * 31 + locBytes[i];
+        hash = hash * 31 + locBytes[i];
   }
-  
-  public boolean equals(Object obj) 
+
+  /**
+   * Checks if the given object is equal to this marshalled object.
+   * 
+   * <p>Marshalled objects are considered equal if they contain the
+   * same serialized object. Codebase annotations where the class 
+   * definition can be downloaded are ignored in the equals test.</p>
+   *
+   * @param obj the object to compare.   
+   * @return <code>true</code> if equal, <code>false</code> otherwise.
+   */
+  public boolean equals(Object obj)
   {
     if (! (obj instanceof MarshalledObject))
       return false;
@@ -81,33 +112,43 @@ public final class MarshalledObject implements Serializable
     // hashCode even differs, don't do the time-consuming comparisons
     if (obj.hashCode() != hash)
       return false;
-    
-    MarshalledObject aobj = (MarshalledObject)obj;
+
+    MarshalledObject aobj = (MarshalledObject) obj;
     if (objBytes == null || aobj.objBytes == null)
       return objBytes == aobj.objBytes;
     if (objBytes.length != aobj.objBytes.length)
       return false;
-    for (int i = 0; i < objBytes.length; i++) 
+    for (int i = 0; i < objBytes.length; i++)
       {
-	if (objBytes[i] != aobj.objBytes[i])
-	  return false;
+        if (objBytes[i] != aobj.objBytes[i])
+          return false;
       }
     // Ignore comparison of locBytes(annotation)
     return true;
   }
-  
-public Object get() 
-  throws java.io.IOException, java.lang.ClassNotFoundException
-{
-  if(objBytes == null)
-    return null;
-  RMIMarshalledObjectInputStream stream = 
-    new RMIMarshalledObjectInputStream(objBytes, locBytes);
-  return stream.readObject();
-}
-  
-  public int hashCode() {
+
+  /**
+   * Constructs and returns a copy of the internal serialized object.
+   * 
+   * @return The deserialized object.
+   * 
+   * @throws IOException if an I/O exception occurs during deserialization.
+   * @throws ClassNotFoundException if the class of the deserialized object 
+   * cannot be found.
+   */
+  public Object get() throws IOException, ClassNotFoundException
+  {
+    if (objBytes == null)
+      return null;
+    
+    RMIMarshalledObjectInputStream stream = 
+      new RMIMarshalledObjectInputStream(objBytes, locBytes);
+    return stream.readObject();
+  }
+
+  public int hashCode()
+  {
     return hash;
   }
-  
+
 }