Package org.apache.catalina.mbeans

Source Code of org.apache.catalina.mbeans.ContextEnvironmentMBean

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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.ContextEnvironment;
import org.apache.catalina.deploy.NamingResources;
import com.sun.org.apache.commons.modeler.BaseModelMBean;


/**
* <p>A <strong>ModelMBean</strong> implementation for the
* <code>org.apache.catalina.deploy.ContextEnvironment</code> component.</p>
*
* @author Amy Roh
* @version $Revision: 1.4.6.1 $ $Date: 2008/04/17 18:37:14 $
*/

public class ContextEnvironmentMBean 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 ContextEnvironmentMBean()
        throws MBeanException, RuntimeOperationsException {

        super();

    }


    // ----------------------------------------------------- Instance Variables


    // ------------------------------------------------------------- Attributes

   
    /**
     * 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 {

        super.setAttribute(attribute);
       
        ContextEnvironment ce = null;
        try {
            ce = (ContextEnvironment) getManagedResource();
        } catch (InstanceNotFoundException e) {
            throw new MBeanException(e);
        } catch (InvalidTargetObjectTypeException e) {
             throw new MBeanException(e);
        }
       
        // cannot use side-efects.  It's removed and added back each time
        // there is a modification in a resource.
        NamingResources nr = ce.getNamingResources();
        nr.removeEnvironment(ce.getName());
        nr.addEnvironment(ce);
    }
   
}
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