Made ObjectAccessException a nestable exception; modified

objectAvailable() error dispatching to not incorrectly report a failure to
create an object.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@918 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/dobj/DEventUtil.java

@@ -1,5 +1,5 @@
 //
-// $Id: DEventUtil.java,v 1.3 2001/10/11 04:07:52 mdb Exp $
+// $Id: DEventUtil.java,v 1.4 2002/02/02 09:42:36 mdb Exp $
 
 package com.threerings.presents.dobj;
 
@@ -39,7 +39,7 @@ public class DEventUtil
             }
 
         } catch (SecurityException se) {
-            throw new ObjectAccessException("Reflection error: " + se);
+            throw new ObjectAccessException("Reflection error", se);
         }
 
         // make sure we found a matching method

src/java/com/threerings/presents/dobj/DObject.java

@@ -1,5 +1,5 @@
 //
-// $Id: DObject.java,v 1.31 2001/10/12 20:12:48 mdb Exp $
+// $Id: DObject.java,v 1.32 2002/02/02 09:42:36 mdb Exp $
 
 package com.threerings.presents.dobj;
 
@@ -378,8 +378,8 @@ public class DObject
 
         } catch (Exception e) {
             String errmsg = "Attribute setting failure [name=" + name +
-                ", value=" + value + ", error=" + e + "].";
-            throw new ObjectAccessException(errmsg);
+                ", value=" + value + "].";
+            throw new ObjectAccessException(errmsg, e);
         }
     }
 
@@ -396,9 +396,8 @@ public class DObject
             return getClass().getField(name).get(this);
 
         } catch (Exception e) {
-            String errmsg = "Attribute getting failure [name=" + name +
-                ", error=" + e + "].";
-            throw new ObjectAccessException(errmsg);
+            String errmsg = "Attribute getting failure [name=" + name + "].";
+            throw new ObjectAccessException(errmsg, e);
         }
     }
 

src/java/com/threerings/presents/dobj/ObjectAccessException.java

@@ -1,8 +1,10 @@
 //
-// $Id: ObjectAccessException.java,v 1.2 2001/10/11 04:07:52 mdb Exp $
+// $Id: ObjectAccessException.java,v 1.3 2002/02/02 09:42:36 mdb Exp $
 
 package com.threerings.presents.dobj;
 
+import org.apache.commons.util.exception.NestableException;
+
 /**
  * An object access exception is delivered when an object is not
  * accessible to a requesting subscriber for some reason or other. For
@@ -10,10 +12,32 @@ package com.threerings.presents.dobj;
  * the error. For others, a message string explaining the access failure
  * is provided.
  */
-public class ObjectAccessException extends Exception
+public class ObjectAccessException extends NestableException
 {
+    /**
+     * Constructs a object access exception with the specified error
+     * message.
+     */
     public ObjectAccessException (String message)
     {
         super(message);
     }
+
+    /**
+     * Constructs a object access exception with the specified error
+     * message and the chained causing event.
+     */
+    public ObjectAccessException (String message, Exception cause)
+    {
+        super(message, cause);
+    }
+
+    /**
+     * Constructs a object access exception with the specified chained
+     * causing event.
+     */
+    public ObjectAccessException (Exception cause)
+    {
+        super(cause);
+    }
 }

src/java/com/threerings/presents/server/PresentsDObjectMgr.java

@@ -1,5 +1,5 @@
 //
-// $Id: PresentsDObjectMgr.java,v 1.20 2001/12/04 01:01:54 mdb Exp $
+// $Id: PresentsDObjectMgr.java,v 1.21 2002/02/02 09:42:36 mdb Exp $
 
 package com.threerings.presents.server;
 
@@ -477,15 +477,6 @@ public class PresentsDObjectMgr implements RootDObjectManager
 
 //                  Log.info("Created object [obj=" + obj + "].");
 
-                if (_target != null) {
-                    // add the subscriber to this object's subscriber list
-                    obj.addSubscriber(_target);
-
-                    // let the target subscriber know that their object is
-                    // available
-                    informObjectAvailable(_target, obj);
-                }
-
             } catch (Exception e) {
                 Log.warning("Object creation failure " +
                             "[class=" + _class.getName() +
@@ -493,10 +484,21 @@ public class PresentsDObjectMgr implements RootDObjectManager
 
                 // let the subscriber know shit be fucked
                 if (_target != null) {
-                    String errmsg = "Object instantiation failed: " + e;
+                    String errmsg = "Object instantiation failed";
                     _target.requestFailed(
-                        oid, new ObjectAccessException(errmsg));
+                        oid, new ObjectAccessException(errmsg, e));
                 }
+
+                return false;
+            }
+
+            if (_target != null) {
+                // add the subscriber to this object's subscriber list
+                obj.addSubscriber(_target);
+
+                // let the target subscriber know that their object is
+                // available
+                informObjectAvailable(_target, obj);
             }
 
             // and return false to ensure that this event is not