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ContextResourceMBean.javaAPI DocGlassfish v2 API8763Fri May 04 22:32:10 BST 2007org.apache.catalina.mbeans

ContextResourceMBean

public class ContextResourceMBean extends com.sun.org.apache.commons.modeler.BaseModelMBean

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

author
Amy Roh
version
$Revision: 1.4 $ $Date: 2007/05/05 05:32:09 $

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 {
            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;
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 {
            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);