issue retrieving data types

Humphry — Fri, 17 Apr 2009 11:27:36 GMT

Hi, I have a problem trying to retrive the data type of an object. I use the VMUtils::find_device method to get the cdrom especification.Then I need to obtain the backing data type (VirtualCdromRemoteAtapiBackingInfo or VirtualCdromIsoBackingInfo) but I don't know how to retrieve this info from $cdrom_spec->backing.

The value of $cdrom_spec is:

$VAR1 = bless( {
 'deviceChange' => [
                     bless( {
                              'operation' => bless( {
                                                      'val' => 'remove'
                                                    }, 'VirtualDeviceConfigSpecOperation' ),
                              'device' => bless( {
                                                   'connectable' => bless( {
                                                                             'allowGuestControl' => 0,
                                                                             'connected' => 0,
                                                                             'startConnected' => 1
                                                                           }, 'VirtualDeviceConnectInfo' ),
                                                   'backing' => bless( {
                                                                         'fileName' => ''
                                                                       }, 'VirtualCdromIsoBackingInfo' ),
                                                   'unitNumber' => 0,
                                                   'controllerKey' => 200,
                                                   'key' => 3000
                                                 }, 'VirtualCdrom' )
                            }, 'VirtualDeviceConfigSpec' )
                   ]
}, 'VirtualMachineConfigSpec' );

Does anybody know how could I retrieve the backing data type.

Re: issue retrieving data types

njain — Fri, 17 Apr 2009 11:57:24 GMT

In perl, you can use "ref" to find out the type of thing being referenced. Here, it will be as follows:

> print ref($cdrom_spec->backing);

Re: issue retrieving data types

Humphry — Fri, 17 Apr 2009 12:05:36 GMT

thanks njain, it works great!!

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