org.apache.catalina.mbeans.ContextResourceLinkMBean Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.catalina.mbeans;
import javax.management.Attribute;
import javax.management.AttributeNotFoundException;
import javax.management.MBeanException;
import javax.management.ReflectionException;
import javax.management.RuntimeOperationsException;
import org.apache.tomcat.util.descriptor.web.ContextResourceLink;
import org.apache.tomcat.util.descriptor.web.NamingResources;
import org.apache.tomcat.util.res.StringManager;
/**
* A ModelMBean implementation for the
* org.apache.tomcat.util.descriptor.web.ContextResourceLink
component.
*
* @author Amy Roh
*/
public class ContextResourceLinkMBean extends BaseCatalinaMBean {
private static final StringManager sm = StringManager.getManager(ContextResourceLinkMBean.class);
/**
* Obtain and return the value of a specific attribute of this MBean.
*
* @param name Name of the requested attribute
*
* @exception AttributeNotFoundException if this attribute is not
* supported by this MBean
* @exception MBeanException if the initializer of an object
* throws an exception
* @exception ReflectionException if a Java reflection exception
* occurs when invoking the getter
*/
@Override
public Object getAttribute(String name) throws AttributeNotFoundException, MBeanException,
ReflectionException {
// Validate the input parameters
if (name == null) {
throw new RuntimeOperationsException(
new IllegalArgumentException(sm.getString("mBean.nullName")),
sm.getString("mBean.nullName"));
}
ContextResourceLink cl = doGetManagedResource();
String value = null;
if ("global".equals(name)) {
return cl.getGlobal();
} else if ("description".equals(name)) {
return cl.getDescription();
} else if ("name".equals(name)) {
return cl.getName();
} else if ("type".equals(name)) {
return cl.getType();
} else {
value = (String) cl.getProperty(name);
if (value == null) {
throw new AttributeNotFoundException(sm.getString("mBean.attributeNotFound", name));
}
}
return value;
}
/**
* Set the value of a specific attribute of this MBean.
*
* @param attribute The identification of the attribute to be set
* and the new value
*
* @exception AttributeNotFoundException if this attribute is not
* supported by this MBean
* @exception MBeanException if the initializer of an object
* throws an exception
* @exception ReflectionException if a Java reflection exception
* occurs when invoking the getter
*/
@Override
public void setAttribute(Attribute attribute) throws AttributeNotFoundException, MBeanException,
ReflectionException {
// Validate the input parameters
if (attribute == null) {
throw new RuntimeOperationsException(
new IllegalArgumentException(sm.getString("mBean.nullAttribute")),
sm.getString("mBean.nullAttribute"));
}
String name = attribute.getName();
Object value = attribute.getValue();
if (name == null) {
throw new RuntimeOperationsException(
new IllegalArgumentException(sm.getString("mBean.nullName")),
sm.getString("mBean.nullName"));
}
ContextResourceLink crl = doGetManagedResource();
if ("global".equals(name)) {
crl.setGlobal((String) value);
} else if ("description".equals(name)) {
crl.setDescription((String) value);
} else if ("name".equals(name)) {
crl.setName((String) value);
} else if ("type".equals(name)) {
crl.setType((String) value);
} else {
crl.setProperty(name, "" + value);
}
// cannot use side-effects. It's removed and added back each time
// there is a modification in a resource.
NamingResources nr = crl.getNamingResources();
nr.removeResourceLink(crl.getName());
nr.addResourceLink(crl);
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy