2 * Jalview - A Sequence Alignment Editor and Viewer (Version 2.4)
3 * Copyright (C) 2008 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
19 package jalview.io.vamsas;
21 import uk.ac.vamsas.client.Vobject;
24 * Implement the basic logic for synchronising changes to or from the Vamsas Document
27 public abstract class LocalDocSyncObject extends DatastoreItem
31 * @return null or the local object that is being worked on.
33 public abstract Object getLObject();
36 * @return null or the document object that is being worked on
38 public abstract Vobject getVObject();
41 * endpoint for synchronize when all opreations are finished.
43 public abstract void nextObject();
45 * called if the local object can be safely updated from the bound document object.
47 public abstract void updateFromDoc();
49 * called if the associated document object can be safely updated with the local changes
51 public abstract void updateToDoc();
53 * @return true if the local object is modified
55 public abstract boolean locallyModified();
58 * @return true if the bound document object is modified
60 public abstract boolean documentModified();
63 * @return true if the document object is locked w.r.t. this object's update.
65 public abstract boolean documentObjectLocked();
68 * @return a new datastore item instance which binds the local object to a new document object
70 public abstract LocalDocSyncObject newDocumentObject(); // could make this constructor(Lobject)
73 * @return a new datastore item instance which binds the document object to a new local object.
75 public abstract LocalDocSyncObject newLocalObject(); // make this constructor(Vobject)
77 * apply the update/commit logic as defined in the vamsas paper
78 * @param documentIsUpdated true if a document update event is being handled
80 public void synchronize(boolean documentIsUpdated) {
81 Object Lobject = getLObject();
82 Vobject Vobject = getVObject();
85 // no local binding for document object
86 newLocalObject().synchronize(documentIsUpdated);
91 // no document binding for local object
92 newDocumentObject().synchronize(documentIsUpdated);
94 // Check binding is valid
95 if (getjv2vObj(Lobject)!=Vobject)
97 // no local binding for document object
98 newLocalObject().synchronize(documentIsUpdated);
99 // no document binding for local object
100 newDocumentObject().synchronize(documentIsUpdated);