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: package com.sun.xml.internal.rngom.binary;
27:
28: import com.sun.xml.internal.rngom.binary.visitor.*;
29:
30: public class GroupPattern extends BinaryPattern {
31: GroupPattern(Pattern p1, Pattern p2) {
32: super (p1.isNullable() && p2.isNullable(), combineHashCode(
33: GROUP_HASH_CODE, p1.hashCode(), p2.hashCode()), p1, p2);
34: }
35:
36: Pattern expand(SchemaPatternBuilder b) {
37: Pattern ep1 = p1.expand(b);
38: Pattern ep2 = p2.expand(b);
39: if (ep1 != p1 || ep2 != p2)
40: return b.makeGroup(ep1, ep2);
41: else
42: return this ;
43: }
44:
45: void checkRestrictions(int context, DuplicateAttributeDetector dad,
46: Alphabet alpha) throws RestrictionViolationException {
47: switch (context) {
48: case START_CONTEXT:
49: throw new RestrictionViolationException(
50: "start_contains_group");
51: case DATA_EXCEPT_CONTEXT:
52: throw new RestrictionViolationException(
53: "data_except_contains_group");
54: }
55: super
56: .checkRestrictions(
57: context == ELEMENT_REPEAT_CONTEXT ? ELEMENT_REPEAT_GROUP_CONTEXT
58: : context, dad, alpha);
59: if (context != LIST_CONTEXT
60: && !contentTypeGroupable(p1.getContentType(), p2
61: .getContentType()))
62: throw new RestrictionViolationException("group_string");
63: }
64:
65: public void accept(PatternVisitor visitor) {
66: visitor.visitGroup(p1, p2);
67: }
68:
69: public Object apply(PatternFunction f) {
70: return f.caseGroup(this);
71: }
72: }
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