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ContextResourceMBean.javaAPI DocApache Tomcat 6.0.146615Fri Jul 20 04:20:36 BST 2007org.apache.catalina.mbeans

ContextResourceMBean

public class ContextResourceMBean extends org.apache.tomcat.util.modeler.BaseModelMBean

A ModelMBean implementation for the org.apache.catalina.deploy.ContextResource component.

author
Amy Roh
version
$Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $

Fields Summary
Constructors Summary
public ContextResourceMBean()
Construct a ModelMBean with default ModelMBeanInfo information.

exception
MBeanException if the initializer of an object throws an exception
exception
RuntimeOperationsException if an IllegalArgumentException occurs


        super();
Methods Summary
public java.lang.ObjectgetAttribute(java.lang.String name)
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

 
        // 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 {
            value = (String) cr.getProperty(name);
            if (value == null) {
                throw new AttributeNotFoundException
                    ("Cannot find attribute "+name);
            }
        }
        
        return value;
public voidsetAttribute(javax.management.Attribute attribute)
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


        // 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 {
            cr.setProperty(name, ""+value);
        }
        
        // 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);