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.program;
030:
031: import com.caucho.util.L10N;
032: import com.caucho.xml.QName;
033:
034: import java.util.HashSet;
035:
036: /**
037: * Represents generaic text.
038: */
039: public class DataItem extends Item {
040: protected final static L10N L = new L10N(DataItem.class);
041:
042: private String _type;
043:
044: public DataItem(String type) {
045: _type = type;
046: }
047:
048: /**
049: * Returns the first set, the set of element names possible.
050: */
051: public void firstSet(HashSet<QName> set) {
052: set.add(new QName("#data", ""));
053: }
054:
055: /**
056: * Data allows the empty match.
057: */
058: public boolean allowEmpty() {
059: return true;
060: }
061:
062: /**
063: * Data repeats
064: */
065: @Override
066: public Item text(CharSequence text) {
067: return this ;
068: }
069:
070: /**
071: * Returns the pretty printed syntax.
072: */
073: public String toSyntaxDescription(int depth) {
074: return "string";
075: }
076:
077: /**
078: * Returns the hash code for the empty item.
079: */
080: public int hashCode() {
081: return 193 + _type.hashCode();
082: }
083:
084: /**
085: * Returns true if the object is an empty item.
086: */
087: public boolean equals(Object o) {
088: if (this == o)
089: return true;
090:
091: if (!(o instanceof DataItem))
092: return false;
093:
094: DataItem item = (DataItem) o;
095:
096: return _type.equals(item._type);
097: }
098:
099: public String toString() {
100: return "DataItem[]";
101: }
102: }
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