001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: * Free SoftwareFoundation, Inc.
023: * 59 Temple Place, Suite 330
024: * Boston, MA 02111-1307 USA
025: *
026: * @author Scott Ferguson
027: */
028:
029: package com.caucho.relaxng.pattern;
030:
031: import com.caucho.relaxng.RelaxException;
032: import com.caucho.relaxng.program.Item;
033: import com.caucho.relaxng.program.ZeroOrMoreItem;
034:
035: /**
036: * Relax one or more pattern
037: */
038: public class ZeroOrMorePattern extends Pattern {
039: private GroupPattern _patterns = new GroupPattern();
040:
041: /**
042: * Creates a new zero-or-more pattern.
043: */
044: public ZeroOrMorePattern() {
045: }
046:
047: /**
048: * Creates a new zero-or-more pattern.
049: */
050: public ZeroOrMorePattern(Pattern pattern) throws RelaxException {
051: _patterns.addChild(pattern);
052: }
053:
054: /**
055: * Returns the Relax schema name.
056: */
057: public String getTagName() {
058: return "zeroOrMore";
059: }
060:
061: /**
062: * Adds an element.
063: */
064: public void addChild(Pattern child) throws RelaxException {
065: _patterns.addChild(child);
066: }
067:
068: /**
069: * returns the group.
070: */
071: public Pattern getPatterns() {
072: return _patterns;
073: }
074:
075: /**
076: * Creates the production item.
077: */
078: public Item createItem(GrammarPattern grammar)
079: throws RelaxException {
080: return new ZeroOrMoreItem(_patterns.createItem(grammar));
081: }
082:
083: /**
084: * Returns a string for the production.
085: */
086: public String toProduction() {
087: return "(" + _patterns.toProduction() + ")*";
088: }
089:
090: public int hashCode() {
091: return 91 + _patterns.hashCode();
092: }
093:
094: public boolean equals(Object o) {
095: if (this == o)
096: return true;
097:
098: if (!(o instanceof ZeroOrMorePattern))
099: return false;
100:
101: ZeroOrMorePattern pattern = (ZeroOrMorePattern) o;
102:
103: return _patterns.equals(pattern._patterns);
104: }
105:
106: /**
107: * Debugging.
108: */
109: public String toString() {
110: return "ZeroOrMorePattern" + _patterns;
111: }
112: }
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