01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common Development
08: * and Distribution License("CDDL") (collectively, the "License"). You
09: * may not use this file except in compliance with the License. You can obtain
10: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
11: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
12: * language governing permissions and limitations under the License.
13: *
14: * When distributing the software, include this License Header Notice in each
15: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
16: * Sun designates this particular file as subject to the "Classpath" exception
17: * as provided by Sun in the GPL Version 2 section of the License file that
18: * accompanied this code. If applicable, add the following below the License
19: * Header, with the fields enclosed by brackets [] replaced by your own
20: * identifying information: "Portions Copyrighted [year]
21: * [name of copyright owner]"
22: *
23: * Contributor(s):
24: *
25: * If you wish your version of this file to be governed by only the CDDL or
26: * only the GPL Version 2, indicate your decision by adding "[Contributor]
27: * elects to include this software in this distribution under the [CDDL or GPL
28: * Version 2] license." If you don't indicate a single choice of license, a
29: * recipient has the option to distribute your version of this file under
30: * either the CDDL, the GPL Version 2 or to extend the choice of license to
31: * its licensees as provided above. However, if you add GPL Version 2 code
32: * and therefore, elected the GPL Version 2 license, then the option applies
33: * only if the new code is made subject to such option by the copyright
34: * holder.
35: */
36:
37: /*
38: * @(#)$Id:
39: */
40: package com.sun.xml.bind.v2.runtime.property;
41:
42: import com.sun.xml.bind.v2.runtime.JAXBContextImpl;
43: import com.sun.xml.bind.v2.runtime.unmarshaller.Scope;
44:
45: /**
46: * Pass around a 'ticket dispenser' when creating new
47: * unmarshallers. This controls the index of the slot
48: * allocated to the chain of handlers.
49:
50: *
51: * <p>
52: * A ticket dispenser also maintains the offset for handlers
53: * to access state slots. A handler records this value when it's created.
54: *
55: *
56: */
57: public final class UnmarshallerChain {
58: /**
59: * This offset allows child unmarshallers to have its own {@link Scope} without colliding with siblings.
60: */
61: private int offset = 0;
62:
63: public final JAXBContextImpl context;
64:
65: public UnmarshallerChain(JAXBContextImpl context) {
66: this .context = context;
67: }
68:
69: /**
70: * Allocates a new {@link Scope} offset.
71: */
72: public int allocateOffset() {
73: return offset++;
74: }
75:
76: /**
77: * Gets the number of total scope offset allocated.
78: */
79: public int getScopeSize() {
80: return offset;
81: }
82: }
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