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package org.apache.catalina.mbeans;
import java.util.ArrayList;
import javax.management.Attribute;
import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.MalformedObjectNameException;
import javax.management.MBeanException;
import javax.management.ObjectName;
import javax.management.ReflectionException;
import javax.management.RuntimeOperationsException;
import javax.management.modelmbean.InvalidTargetObjectTypeException;
import org.apache.catalina.deploy.ContextResource;
import org.apache.catalina.deploy.NamingResources;
import org.apache.catalina.deploy.ResourceParams;
import com.sun.org.apache.commons.modeler.BaseModelMBean;
/**
* <p>A <strong>ModelMBean</strong> implementation for the
* <code>org.apache.catalina.deploy.ContextResource</code> component.</p>
*
* @author Amy Roh
* @version $Revision: 1.4 $ $Date: 2007/05/05 05:32:09 $
*/
public class ContextResourceMBean extends BaseModelMBean {
// ----------------------------------------------------------- Constructors
/**
* Construct a <code>ModelMBean</code> with default
* <code>ModelMBeanInfo</code> information.
*
* @exception MBeanException if the initializer of an object
* throws an exception
* @exception RuntimeOperationsException if an IllegalArgumentException
* occurs
*/
public ContextResourceMBean()
throws MBeanException, RuntimeOperationsException {
super();
}
// ----------------------------------------------------- Instance Variables
// ------------------------------------------------------------- Attributes
/**
* 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
*/
public Object getAttribute(String name)
throws AttributeNotFoundException, MBeanException,
ReflectionException {
// Validate the input parameters
if (name == null)
throw new RuntimeOperationsException
(new IllegalArgumentException("Attribute name is null"),
"Attribute name is null");
ContextResource cr = null;
try {
cr = (ContextResource) getManagedResource();
} catch (InstanceNotFoundException e) {
throw new MBeanException(e);
} catch (InvalidTargetObjectTypeException e) {
throw new MBeanException(e);
}
String value = null;
if ("auth".equals(name)) {
return (cr.getAuth());
} else if ("description".equals(name)) {
return (cr.getDescription());
} else if ("name".equals(name)) {
return (cr.getName());
} else if ("scope".equals(name)) {
return (cr.getScope());
} else if ("type".equals(name)) {
return (cr.getType());
} else {
NamingResources nr = cr.getNamingResources();
if (nr == null) {
throw new AttributeNotFoundException
("Cannot find naming resource "+cr.getName());
}
ResourceParams rp = nr.findResourceParams(cr.getName());
if (rp == null) {
throw new AttributeNotFoundException
("Cannot find resource param "+cr.getName());
}
value = (String) rp.getParameters().get(name);
if (value == null) {
throw new AttributeNotFoundException
("Cannot find attribute "+name+rp);
}
}
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
*/
public void setAttribute(Attribute attribute)
throws AttributeNotFoundException, MBeanException,
ReflectionException {
// Validate the input parameters
if (attribute == null)
throw new RuntimeOperationsException
(new IllegalArgumentException("Attribute is null"),
"Attribute is null");
String name = attribute.getName();
Object value = attribute.getValue();
if (name == null)
throw new RuntimeOperationsException
(new IllegalArgumentException("Attribute name is null"),
"Attribute name is null");
ContextResource cr = null;
try {
cr = (ContextResource) getManagedResource();
} catch (InstanceNotFoundException e) {
throw new MBeanException(e);
} catch (InvalidTargetObjectTypeException e) {
throw new MBeanException(e);
}
if ("auth".equals(name)) {
cr.setAuth((String)value);
} else if ("description".equals(name)) {
cr.setDescription((String)value);
} else if ("name".equals(name)) {
cr.setName((String)value);
} else if ("scope".equals(name)) {
cr.setScope((String)value);
} else if ("type".equals(name)) {
cr.setType((String)value);
} else {
ResourceParams rp =
cr.getNamingResources().findResourceParams(cr.getName());
if (rp != null) {
String valueStr = ""+value;
rp.addParameter(name, valueStr);
cr.getNamingResources().removeResourceParams(cr.getName());
} else {
rp = new ResourceParams();
rp.setName(cr.getName());
String valueStr = ""+value;
rp.addParameter(name, valueStr);
}
cr.getNamingResources().addResourceParams(rp);
}
// cannot use side-efects. It's removed and added back each time
// there is a modification in a resource.
NamingResources nr = cr.getNamingResources();
nr.removeResource(cr.getName());
nr.addResource(cr);
}
}
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