001: /*
002: * Copyright (c) 2003 The Visigoth Software Society. All rights
003: * reserved.
004: *
005: * Redistribution and use in source and binary forms, with or without
006: * modification, are permitted provided that the following conditions
007: * are met:
008: *
009: * 1. Redistributions of source code must retain the above copyright
010: * notice, this list of conditions and the following disclaimer.
011: *
012: * 2. Redistributions in binary form must reproduce the above copyright
013: * notice, this list of conditions and the following disclaimer in
014: * the documentation and/or other materials provided with the
015: * distribution.
016: *
017: * 3. The end-user documentation included with the redistribution, if
018: * any, must include the following acknowledgement:
019: * "This product includes software developed by the
020: * Visigoth Software Society (http://www.visigoths.org/)."
021: * Alternately, this acknowledgement may appear in the software itself,
022: * if and wherever such third-party acknowledgements normally appear.
023: *
024: * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
025: * project contributors may be used to endorse or promote products derived
026: * from this software without prior written permission. For written
027: * permission, please contact visigoths@visigoths.org.
028: *
029: * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
030: * nor may "FreeMarker" or "Visigoth" appear in their names
031: * without prior written permission of the Visigoth Software Society.
032: *
033: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
034: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
035: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
036: * DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
037: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
038: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
039: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
040: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
041: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
042: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
043: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
044: * SUCH DAMAGE.
045: * ====================================================================
046: *
047: * This software consists of voluntary contributions made by many
048: * individuals on behalf of the Visigoth Software Society. For more
049: * information on the Visigoth Software Society, please see
050: * http://www.visigoths.org/
051: */
052:
053: package freemarker.ext.dom;
054:
055: import org.w3c.dom.*;
056: import freemarker.template.*;
057: import freemarker.core.Environment;
058: import freemarker.template.utility.StringUtil;
059:
060: /**
061: * A class that wraps the root node of a parsed XML document, using
062: * the W3C DOM API.
063: */
064:
065: class DocumentModel extends NodeModel implements TemplateHashModel {
066:
067: private ElementModel rootElement;
068:
069: DocumentModel(Document doc) {
070: super (doc);
071: }
072:
073: public String getNodeName() {
074: return "@document";
075: }
076:
077: public TemplateModel get(String key) throws TemplateModelException {
078: if (key.equals("*")) {
079: return getRootElement();
080: } else if (key.equals("**")) {
081: NodeList nl = ((Document) node).getElementsByTagName("*");
082: return new NodeListModel(nl, this );
083: } else if (StringUtil.isXMLID(key)) {
084: ElementModel em = (ElementModel) NodeModel
085: .wrap(((Document) node).getDocumentElement());
086: if (em
087: .matchesName(key, Environment
088: .getCurrentEnvironment())) {
089: return em;
090: } else {
091: return new NodeListModel(this );
092: }
093: }
094: return super .get(key);
095: }
096:
097: ElementModel getRootElement() {
098: if (rootElement == null) {
099: rootElement = (ElementModel) wrap(((Document) node)
100: .getDocumentElement());
101: }
102: return rootElement;
103: }
104:
105: public boolean isEmpty() {
106: return false;
107: }
108: }
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