001: /*
002: * Copyright (c) 1998-2003 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 javax.servlet.jsp.tagext;
030:
031: import javax.servlet.jsp.PageContext;
032:
033: /**
034: * Adapts an object to the tag hierarchy.
035: */
036: public class TagAdapter implements Tag {
037: private SimpleTag _adaptee;
038:
039: /**
040: * Creates a new adapter.
041: */
042: public TagAdapter(SimpleTag adaptee) {
043: _adaptee = adaptee;
044: }
045:
046: /**
047: * Returns the wrapped object.
048: */
049: public JspTag getAdaptee() {
050: return _adaptee;
051: }
052:
053: /**
054: * Returns the parent tag.
055: */
056: public Tag getParent() {
057: JspTag parent = _adaptee.getParent();
058:
059: if (parent == null)
060: return null;
061: else if (parent instanceof Tag)
062: return (Tag) parent;
063: else
064: return new TagAdapter((SimpleTag) parent);
065: }
066:
067: /**
068: * Stubbed.
069: */
070: public void setPageContext(PageContext pc) {
071: throw new UnsupportedOperationException();
072: }
073:
074: /**
075: * Stubbed.
076: */
077: public void setParent(Tag parent) {
078: throw new UnsupportedOperationException();
079: }
080:
081: /**
082: * Stubbed.
083: */
084: public int doStartTag() {
085: throw new UnsupportedOperationException();
086: }
087:
088: /**
089: * Stubbed.
090: */
091: public int doEndTag() {
092: throw new UnsupportedOperationException();
093: }
094:
095: /**
096: * Stubbed.
097: */
098: public void release() {
099: throw new UnsupportedOperationException();
100: }
101:
102: public String toString() {
103: return "javax.servlet.jsp.tagext.TagAdapter[" + _adaptee + "]";
104: }
105: }
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