01: /*
02: * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: /*
27: * @(#)$Id:
28: */
29: package com.sun.xml.internal.bind.v2.runtime.property;
30:
31: import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl;
32: import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Scope;
33:
34: /**
35: * Pass around a 'ticket dispenser' when creating new
36: * unmarshallers. This controls the index of the slot
37: * allocated to the chain of handlers.
38:
39: *
40: * <p>
41: * A ticket dispenser also maintains the offset for handlers
42: * to access state slots. A handler records this value when it's created.
43: *
44: *
45: */
46: public final class UnmarshallerChain {
47: /**
48: * This offset allows child unmarshallers to have its own {@link Scope} without colliding with siblings.
49: */
50: private int offset = 0;
51:
52: public final JAXBContextImpl context;
53:
54: public UnmarshallerChain(JAXBContextImpl context) {
55: this .context = context;
56: }
57:
58: /**
59: * Allocates a new {@link Scope} offset.
60: */
61: public int allocateOffset() {
62: return offset++;
63: }
64:
65: /**
66: * Gets the number of total scope offset allocated.
67: */
68: public int getScopeSize() {
69: return offset;
70: }
71: }
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