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.vfs;
030:
031: import com.caucho.util.L10N;
032: import com.caucho.util.Log;
033:
034: import javax.naming.Context;
035: import javax.naming.InitialContext;
036: import javax.naming.NamingException;
037: import java.io.IOException;
038: import java.util.Map;
039: import java.util.logging.Logger;
040:
041: /**
042: * Adapts the JNDI to the Path API. The name separator is always '/'.
043: *
044: * @since Resin 1.2
045: */
046: public class JndiPath extends FilesystemPath {
047: protected static final Logger log = Log.open(JndiPath.class);
048: protected static final L10N L = new L10N(JndiPath.class);
049:
050: private Context parent;
051:
052: /**
053: * Creates a new JndiPath root.
054: */
055: public JndiPath() {
056: super (null, "/", "/");
057:
058: _root = this ;
059: }
060:
061: /**
062: * Create a new JndiPath with the given name.
063: */
064: protected JndiPath(FilesystemPath root, String userPath, String path) {
065: super (root, userPath, path);
066: }
067:
068: /**
069: * Walking down the path just stores the new name in the created Path.
070: *
071: * @param userPath the string used in the <code>lookup</code> call.
072: * @param attributes any inherited attributes.
073: * @param path the normalized slash-separated path.
074: * @return a new JndiPath representing the new path.
075: */
076: public Path fsWalk(String userPath, Map<String, Object> attributes,
077: String path) {
078: return new JndiPath(_root, userPath, path);
079: }
080:
081: /**
082: * The scheme is always "jndi:".
083: */
084: public String getScheme() {
085: return "jndi";
086: }
087:
088: /**
089: * Create a new subcontext
090: */
091: public boolean mkdir() throws IOException {
092: try {
093: Context parent = getAllButLast(getPath());
094:
095: parent.createSubcontext(getTail());
096:
097: return true;
098: } catch (Exception e) {
099: throw new IOExceptionWrapper(e);
100: }
101: }
102:
103: /**
104: * Returns the object bound at this path.
105: */
106: public Object getObject() throws IOException {
107: try {
108: Context parent = getAllButLast(getPath());
109:
110: return parent.lookup(getTail());
111: } catch (Exception e) {
112: throw new IOExceptionWrapper(e);
113: }
114: }
115:
116: /**
117: * Sets the object bound at this path.
118: *
119: * @param value the new value
120: */
121: public void setObject(Object value) throws IOException {
122: try {
123: Context parent = getAllButLast(getPath());
124:
125: parent.rebind(getTail(), value);
126: } catch (Exception e) {
127: e.printStackTrace();
128: throw new IOExceptionWrapper(e);
129: }
130: }
131:
132: /**
133: * Returns the context found by looking up all but the last segment
134: * of the path.
135: *
136: * @param path slash-separated path
137: * @return context of the parent path
138: */
139: private Context getAllButLast(String path) throws NamingException {
140: if (parent != null)
141: return parent;
142:
143: Context context = new InitialContext();
144:
145: int head = 1;
146: int tail;
147:
148: while ((tail = path.indexOf('/', head)) > 0) {
149: String section = path.substring(head, tail);
150:
151: if (context == null)
152: throw new NamingException(L.l("null context for `{0}'",
153: path));
154:
155: context = (Context) context.lookup(section);
156:
157: head = tail + 1;
158: }
159:
160: parent = context;
161:
162: return parent;
163: }
164: }
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