001: /*
002: * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/mbeans/ContextResourceMBean.java,v 1.8 2002/06/24 21:11:42 amyroh Exp $
003: * $Revision: 1.8 $
004: * $Date: 2002/06/24 21:11:42 $
005: *
006: * ====================================================================
007: *
008: * The Apache Software License, Version 1.1
009: *
010: * Copyright (c) 2002 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.catalina.mbeans;
065:
066: import java.util.ArrayList;
067: import javax.management.Attribute;
068: import javax.management.AttributeNotFoundException;
069: import javax.management.InstanceNotFoundException;
070: import javax.management.MalformedObjectNameException;
071: import javax.management.MBeanException;
072: import javax.management.ObjectName;
073: import javax.management.ReflectionException;
074: import javax.management.RuntimeOperationsException;
075: import javax.management.modelmbean.InvalidTargetObjectTypeException;
076: import org.apache.catalina.deploy.ContextResource;
077: import org.apache.catalina.deploy.NamingResources;
078: import org.apache.catalina.deploy.ResourceParams;
079: import org.apache.commons.modeler.BaseModelMBean;
080:
081: /**
082: * <p>A <strong>ModelMBean</strong> implementation for the
083: * <code>org.apache.catalina.deploy.ContextResource</code> component.</p>
084: *
085: * @author Amy Roh
086: * @version $Revision: 1.8 $ $Date: 2002/06/24 21:11:42 $
087: */
088:
089: public class ContextResourceMBean extends BaseModelMBean {
090:
091: // ----------------------------------------------------------- Constructors
092:
093: /**
094: * Construct a <code>ModelMBean</code> with default
095: * <code>ModelMBeanInfo</code> information.
096: *
097: * @exception MBeanException if the initializer of an object
098: * throws an exception
099: * @exception RuntimeOperationsException if an IllegalArgumentException
100: * occurs
101: */
102: public ContextResourceMBean() throws MBeanException,
103: RuntimeOperationsException {
104:
105: super ();
106:
107: }
108:
109: // ----------------------------------------------------- Instance Variables
110:
111: // ------------------------------------------------------------- Attributes
112:
113: /**
114: * Obtain and return the value of a specific attribute of this MBean.
115: *
116: * @param name Name of the requested attribute
117: *
118: * @exception AttributeNotFoundException if this attribute is not
119: * supported by this MBean
120: * @exception MBeanException if the initializer of an object
121: * throws an exception
122: * @exception ReflectionException if a Java reflection exception
123: * occurs when invoking the getter
124: */
125: public Object getAttribute(String name)
126: throws AttributeNotFoundException, MBeanException,
127: ReflectionException {
128:
129: // Validate the input parameters
130: if (name == null)
131: throw new RuntimeOperationsException(
132: new IllegalArgumentException(
133: "Attribute name is null"),
134: "Attribute name is null");
135:
136: ContextResource cr = null;
137: try {
138: cr = (ContextResource) getManagedResource();
139: } catch (InstanceNotFoundException e) {
140: throw new MBeanException(e);
141: } catch (InvalidTargetObjectTypeException e) {
142: throw new MBeanException(e);
143: }
144:
145: String value = null;
146: if ("auth".equals(name)) {
147: return (cr.getAuth());
148: } else if ("description".equals(name)) {
149: return (cr.getDescription());
150: } else if ("name".equals(name)) {
151: return (cr.getName());
152: } else if ("scope".equals(name)) {
153: return (cr.getScope());
154: } else if ("type".equals(name)) {
155: return (cr.getType());
156: } else {
157: NamingResources nr = cr.getNamingResources();
158: if (nr == null) {
159: throw new AttributeNotFoundException(
160: "Cannot find naming resource " + cr.getName());
161: }
162: ResourceParams rp = nr.findResourceParams(cr.getName());
163: if (rp == null) {
164: throw new AttributeNotFoundException(
165: "Cannot find resource param " + cr.getName());
166: }
167: value = (String) rp.getParameters().get(name);
168: if (value == null) {
169: throw new AttributeNotFoundException(
170: "Cannot find attribute " + name + rp);
171: }
172: }
173:
174: return value;
175:
176: }
177:
178: /**
179: * Set the value of a specific attribute of this MBean.
180: *
181: * @param attribute The identification of the attribute to be set
182: * and the new value
183: *
184: * @exception AttributeNotFoundException if this attribute is not
185: * supported by this MBean
186: * @exception MBeanException if the initializer of an object
187: * throws an exception
188: * @exception ReflectionException if a Java reflection exception
189: * occurs when invoking the getter
190: */
191: public void setAttribute(Attribute attribute)
192: throws AttributeNotFoundException, MBeanException,
193: ReflectionException {
194:
195: // Validate the input parameters
196: if (attribute == null)
197: throw new RuntimeOperationsException(
198: new IllegalArgumentException("Attribute is null"),
199: "Attribute is null");
200: String name = attribute.getName();
201: Object value = attribute.getValue();
202: if (name == null)
203: throw new RuntimeOperationsException(
204: new IllegalArgumentException(
205: "Attribute name is null"),
206: "Attribute name is null");
207:
208: ContextResource cr = null;
209: try {
210: cr = (ContextResource) getManagedResource();
211: } catch (InstanceNotFoundException e) {
212: throw new MBeanException(e);
213: } catch (InvalidTargetObjectTypeException e) {
214: throw new MBeanException(e);
215: }
216:
217: if ("auth".equals(name)) {
218: cr.setAuth((String) value);
219: } else if ("description".equals(name)) {
220: cr.setDescription((String) value);
221: } else if ("name".equals(name)) {
222: cr.setName((String) value);
223: } else if ("scope".equals(name)) {
224: cr.setScope((String) value);
225: } else if ("type".equals(name)) {
226: cr.setType((String) value);
227: } else {
228: ResourceParams rp = cr.getNamingResources()
229: .findResourceParams(cr.getName());
230: if (rp != null) {
231: String valueStr = "" + value;
232: rp.addParameter(name, valueStr);
233: cr.getNamingResources().removeResourceParams(
234: cr.getName());
235: } else {
236: rp = new ResourceParams();
237: rp.setName(cr.getName());
238: String valueStr = "" + value;
239: rp.addParameter(name, valueStr);
240: }
241: cr.getNamingResources().addResourceParams(rp);
242: }
243:
244: // cannot use side-efects. It's removed and added back each time
245: // there is a modification in a resource.
246: NamingResources nr = cr.getNamingResources();
247: nr.removeResource(cr.getName());
248: nr.addResource(cr);
249: }
250:
251: }
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