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.xsl.java;
030:
031: import com.caucho.java.JavaWriter;
032: import com.caucho.xml.QName;
033: import com.caucho.xsl.XslParseException;
034:
035: /**
036: * the xsl:namespace-alias tag
037: */
038: public class XslNamespaceAlias extends XslNode implements XslTopNode {
039: private String _stylesheetPrefix;
040: private String _resultPrefix;
041:
042: /**
043: * Returns the tag name.
044: */
045: public String getTagName() {
046: return "xsl:namespace-alias";
047: }
048:
049: /**
050: * Adds an attribute.
051: */
052: public void addAttribute(QName name, String value)
053: throws XslParseException {
054: if (name.getName().equals("stylesheet-prefix")) {
055: _stylesheetPrefix = value;
056: } else if (name.getName().equals("result-prefix")) {
057: _resultPrefix = value;
058: } else
059: super .addAttribute(name, value);
060: }
061:
062: /**
063: * called at end of the attributes
064: */
065: public void endAttributes() throws XslParseException {
066: if (_stylesheetPrefix == null)
067: throw error(L
068: .l("'stylesheet-prefix' is a required attribute of <xsl:namespace-alias>"));
069: if (_resultPrefix == null)
070: throw error(L
071: .l("'result-prefix' is a required attribute of <xsl:namespace-alias>"));
072: }
073:
074: /**
075: * Called when the element ends.
076: */
077: public void endElement() throws Exception {
078: String stylesheetNs = getNamespace(_stylesheetPrefix);
079:
080: if (_stylesheetPrefix.equals("#default"))
081: stylesheetNs = "";
082: else if (stylesheetNs.equals(""))
083: throw error(L.l("'{0}' is not a valid namespace prefix",
084: _stylesheetPrefix));
085:
086: String resultNs = getNamespace(_resultPrefix);
087: if (_resultPrefix.equals("#default")) {
088: _resultPrefix = "";
089: resultNs = "";
090: } else if (resultNs == null)
091: throw error(L.l("'{0}' is not a valid namespace prefix",
092: _resultPrefix));
093:
094: String result[] = new String[] { _resultPrefix, resultNs };
095:
096: _gen.addNamespaceAlias(stylesheetNs, result);
097: }
098:
099: /**
100: * Generates the code for the tag
101: *
102: * @param out the output writer for the generated java.
103: */
104: public void generate(JavaWriter out) throws Exception {
105: }
106: }
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