Deleting a Class

Use the CIMClient method, deleteClass, to delete a class. This method removes the class and throws a CIMException.

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Note –

You must first remove any existing subclasses or instances before deleting a base class.

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Example 4–18 Deleting a Class

This example uses the deleteClass method to delete a class in the default namespace root\cimv2. This program takes four required string arguments:

• hostname

• classname

• username

• password

The user running this program must specify the username and the password for an account, which has write permission to the root\cimv2 namespace.

 
import javax.wbem.cim.CIMClass;
import javax.wbem.cim.CIMException;
import javax.wbem.cim.CIMNameSpace;
import javax.wbem.cim.CIMObjectPath;
import javax.wbem.client.CIMClient;
import javax.wbem.client.UserPrincipal;
import javax.wbem.client.PasswordCredential;

import java.rmi.*;
import java.util.Enumeration;

/**
 * Deletes the class specified in the command line. Works in the default
 * namespace root\cimv2.
 */
public class DeleteClass {
    public static void main(String args[]) throws CIMException {
        CIMClient cc = null;
        // if not four arguments, show usage and exit
        if (args.length != 4) {
            System.out.println("Usage: DeleteClass host className " +
                              "username password"); 
            System.exit(1);
        }
        try {
            // args[0] contains the hostname. We create a CIMNameSpace 
            // (cns) pointing to the default namespace on the specified host
            CIMNameSpace cns = new CIMNameSpace(args[0]);

            // args[2] and args[3] contain the username and password.
            // We create a UserPrincipal (up) using the username and
            // a PasswordCredential using the password.
            UserPrincipal up = new UserPrincipal(args[2]);
            PasswordCredential pc = new PasswordCredential(args[3]);

            cc = new CIMClient(cns, up, pc);

            // Get the class name (args[4]) and create a CIMObjectPath
            CIMObjectPath cop = new CIMObjectPath(args[1]);
            // delete the class
            cc.deleteClass(cop);
        }
        catch (Exception e) {
            System.out.println("Exception: "+e);
        }
        if (cc != null) {
            cc.close();
        }
    }
}

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