001: /*
002: * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/naming/factory/TyrexResourceFactory.java,v 1.1 2002/06/28 12:44:41 remm Exp $
003: * $Revision: 1.1 $
004: * $Date: 2002/06/28 12:44:41 $
005: *
006: * ====================================================================
007: *
008: * The Apache Software License, Version 1.1
009: *
010: * Copyright (c) 1999 The Apache Software Foundation. All rights
011: * reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions
015: * are met:
016: *
017: * 1. Redistributions of source code must retain the above copyright
018: * notice, this list of conditions and the following disclaimer.
019: *
020: * 2. Redistributions in binary form must reproduce the above copyright
021: * notice, this list of conditions and the following disclaimer in
022: * the documentation and/or other materials provided with the
023: * distribution.
024: *
025: * 3. The end-user documentation included with the redistribution, if
026: * any, must include the following acknowlegement:
027: * "This product includes software developed by the
028: * Apache Software Foundation (http://www.apache.org/)."
029: * Alternately, this acknowlegement may appear in the software itself,
030: * if and wherever such third-party acknowlegements normally appear.
031: *
032: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
033: * Foundation" must not be used to endorse or promote products derived
034: * from this software without prior written permission. For written
035: * permission, please contact apache@apache.org.
036: *
037: * 5. Products derived from this software may not be called "Apache"
038: * nor may "Apache" appear in their names without prior written
039: * permission of the Apache Group.
040: *
041: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
042: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
043: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
044: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
045: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
046: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
047: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
048: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
049: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
050: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
051: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
052: * SUCH DAMAGE.
053: * ====================================================================
054: *
055: * This software consists of voluntary contributions made by many
056: * individuals on behalf of the Apache Software Foundation. For more
057: * information on the Apache Software Foundation, please see
058: * <http://www.apache.org/>.
059: *
060: * [Additional notices, if required by prior licensing conditions]
061: *
062: */
063:
064: package org.apache.naming.factory;
065:
066: import java.util.Hashtable;
067: import java.util.Iterator;
068: import javax.naming.Name;
069: import javax.naming.Context;
070: import javax.naming.NamingException;
071: import javax.naming.Reference;
072: import javax.naming.RefAddr;
073: import javax.naming.spi.ObjectFactory;
074: import java.net.URL;
075: import org.apache.naming.ResourceRef;
076: import tyrex.tm.TransactionDomain;
077: import tyrex.resource.Resources;
078: import tyrex.resource.ResourceConfig;
079:
080: /**
081: * Object factory for Tyrex Resources.<br>
082: *
083: * This class retrieves Tyrex resources that are configured in the
084: * TransactionDomain. The type of Resource returned is specified in
085: * Tyrex's domain configuration file.
086: *
087: * Tyrex is an open-source transaction manager, developed by Assaf Arkin and
088: * exolab.org. See the <a href="http://tyrex.exolab.org/">Tyrex homepage</a>
089: * for more details about Tyrex and downloads.
090: *
091: * @author David Haraburda
092: * @version $Revision: 1.1 $ $Date: 2002/06/28 12:44:41 $
093: */
094:
095: public class TyrexResourceFactory extends TyrexFactory {
096:
097: // ----------------------------------------------------------- Constructors
098:
099: // -------------------------------------------------------------- Constants
100:
101: public static final String RESOURCE_NAME = "name";
102: public static final String DEFAULT_RESOURCE_NAME = "tomcat";
103:
104: // ----------------------------------------------------- Instance Variables
105:
106: // --------------------------------------------------------- Public Methods
107:
108: // -------------------------------------------------- ObjectFactory Methods
109:
110: /**
111: * Create a new Resource instance. The type of Resource is dependant
112: * upon Tyrex's domain configuration.
113: *
114: * @param obj The reference object describing the Resource
115: */
116: public Object getObjectInstance(Object obj, Name name,
117: Context nameCtx, Hashtable environment)
118: throws NamingException {
119:
120: if (obj instanceof ResourceRef) {
121: Reference ref = (Reference) obj;
122:
123: if (ref.getClassName().equals("tyrex.resource.Resource")) {
124:
125: try {
126:
127: Resources resources = getTransactionDomain()
128: .getResources();
129: RefAddr nameAddr = ref.get(RESOURCE_NAME);
130: if (nameAddr != null) {
131: return resources.getResource(
132: nameAddr.getContent().toString())
133: .getClientFactory();
134: } else {
135: return resources.getResource(
136: DEFAULT_RESOURCE_NAME)
137: .getClientFactory();
138: }
139:
140: } catch (Throwable t) {
141: log("Cannot create Tyrex Resource, Exception", t);
142: throw new NamingException(
143: "Exception creating Tyrex Resource: "
144: + t.getMessage());
145: }
146:
147: }
148:
149: }
150:
151: return null;
152:
153: }
154:
155: // -------------------------------------------------------- Private Methods
156:
157: private void log(String message) {
158: System.out.print("TyrexResourceFactory: ");
159: System.out.println(message);
160: }
161:
162: private void log(String message, Throwable exception) {
163: log(message);
164: exception.printStackTrace(System.out);
165: }
166:
167: }
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