Convert Narya (most of the way) over to a Maven Ant task based build. The

ActionScript bits remain belligerent, but the Java stuff is mostly shipshape.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@6222 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/main/java/com/threerings/presents/dobj/EntryRemovedEvent.java

@@ -0,0 +1,122 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2010 Three Rings Design, Inc., All Rights Reserved
+// http://code.google.com/p/narya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.presents.dobj;
+
+import static com.threerings.presents.Log.log;
+
+/**
+ * An entry removed event is dispatched when an entry is removed from a {@link DSet} attribute of a
+ * distributed object. It can also be constructed to request the removal of an entry from a set and
+ * posted to the dobjmgr.
+ *
+ * @see DObjectManager#postEvent
+ *
+ * @param <T> the type of entry being handled by this event. This must match the type on the set
+ * that generated this event.
+ */
+public class EntryRemovedEvent<T extends DSet.Entry> extends NamedEvent
+{
+    /**
+     * Constructs a new entry removed event on the specified target object with the supplied set
+     * attribute name and entry key to remove.
+     *
+     * @param targetOid the object id of the object from whose set we will remove an entry.
+     * @param name the name of the attribute from which to remove the specified entry.
+     * @param key the entry key that identifies the entry to remove.
+     * @param oldEntry the previous value of the entry.
+     */
+    public EntryRemovedEvent (int targetOid, String name, Comparable<?> key, T oldEntry)
+    {
+        super(targetOid, name);
+        _key = key;
+        _oldEntry = oldEntry;
+    }
+
+    /**
+     * Constructs a blank instance of this event in preparation for unserialization from the
+     * network.
+     */
+    public EntryRemovedEvent ()
+    {
+    }
+
+    /**
+     * Returns the key that identifies the entry that has been removed.
+     */
+    public Comparable<?> getKey ()
+    {
+        return _key;
+    }
+
+    /**
+     * Returns the entry that was in the set prior to being updated.
+     */
+    public T getOldEntry ()
+    {
+        return _oldEntry;
+    }
+
+    @Override
+    public boolean alreadyApplied ()
+    {
+        return (_oldEntry != UNSET_OLD_ENTRY);
+    }
+
+    @Override
+    public boolean applyToObject (DObject target)
+        throws ObjectAccessException
+    {
+        if (!alreadyApplied()) {
+            DSet<T> set = target.getSet(_name);
+            // remove, fetch the previous value for interested callers
+            _oldEntry = set.removeKey(_key);
+            if (_oldEntry == null) {
+                // complain if there was actually nothing there
+                log.warning("No matching entry to remove", "key", _key, "set", set);
+                return false;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    protected void notifyListener (Object listener)
+    {
+        if (listener instanceof SetListener<?>) {
+            @SuppressWarnings("unchecked") SetListener<T> setlist = (SetListener<T>)listener;
+            setlist.entryRemoved(this);
+        }
+    }
+
+    @Override
+    protected void toString (StringBuilder buf)
+    {
+        buf.append("ELREM:");
+        super.toString(buf);
+        buf.append(", key=").append(_key);
+    }
+
+    protected Comparable<?> _key;
+
+    @SuppressWarnings("unchecked")
+    protected transient T _oldEntry = (T)UNSET_OLD_ENTRY;
+}