Re: Getting incomplete object path

Kirk Augustin <[email protected]>
Newsgroups gmane.network.open-pegasus.general
Message-ID <[email protected]> 
I am not sure, but I believe there is optional behavior.
Consider the section I made 12 pt and bold below.


{ ...
public class CIMObjectPath
extends java.lang.Object
implements java.io.Serializable
Path to the specified CIM class or CIM instance or CIM qualifier.  The CIM object path is a reference to CIM elements. It is only valid in context of an active connection to a CIM object manager on a host. In order to uniquely identify a given object on a host, it includes the  namespace, object name,  and  keys (if the object is an instance). The namespace is taken to  be relative to the namespace that the  CIMClient is currently connected to. A key is a property or set of properties used to uniquely identify an  instance of a class. Key properties are marked with the KEY qualifier. 
For example, the object path: 
\\myserver\Root\cimv2\Solaris_ComputerSystem.Name=mycomputer: CreationClassName=Solaris_ComputerSystem 
has two parts: 
	* \\myserver\Root\cimv2 - The default CIM namespace on  host myserver. 
	* Solaris_ComputerSystem.Name=mycomputer, CreationClassName=Solaris_ComputerSystem - A specific Solaris Computer System object in the default namespace on host myserver. This Solaris computer system is uniquely  identified by two key property values in the format  (key property = value): 
	* Name=mycomputer 
	* CreationClassName=Solaris_ComputerSystem 
... }
http://wbemservices.sourceforge.net/javadoc/api.1109/javax/wbem/cim/CIMObjectPath.html
http://wbemservices.sourceforge.net/javadoc/api.1109/javax/wbem/cim/CIMObjectPath.html

 
Kirk Augustin
11821 NW McNamee Rd
Portland, OR 97231


HM: 503-289-4356


>________________________________
> From: Pranav S <[email protected]>
>To: Kirk Augustin <[email protected]> 
>Cc: Devchandra Leishangthem <[email protected]>; "[email protected]" <[email protected]>; Venkateswara R Puvvada <[email protected]> 
>Sent: Wednesday, April 18, 2012 5:27 AM
>Subject: Re: Getting incomplete object path
> 
>
>Exactly Kirk, Bang on target.  ..!!
>I am not getting namespace and key-pair values in object path when I print the CIMInstance' object path. I see only class name of the instance.
>Is it expected behaviour?
>
>
>
>On 18 April 2012 09:30, Kirk Augustin <[email protected]> wrote:
>
>That was the confusion I had at first as well.
>>As you say, enumerateInstances and EnumerateInstanceNames must not return the same, or else there would be no point in having both.
>>But now I understand that he was comparing what is return by enumerateInstances, with what is returned by first using EnumerateInstanceNames and then using getInstance on each item in the names list.
>>And I think he is saying the properties are all there in what is returned, but not the server namespace.
>>
>> 
>>Kirk Augustin
>>11821 NW McNamee Rd
>>Portland, OR 97231
>>
>>
>>HM: 503-289-4356
>>
>>
>>>________________________________
>>> From: Devchandra Leishangthem <[email protected]>
>>>To: Pranav S <[email protected]> 
>>>Cc: Kirk Augustin <[email protected]>; "[email protected]" <[email protected]>; Venkateswara R Puvvada <[email protected]> 
>>>Sent: Tuesday, April 17, 2012 8:38 PM
>>>
>>>Subject: Re: Getting incomplete object path
>>> 
>>>
>>>
>>>They are rather not equal. If they are
equal, why do we need both enumerateInstances and EnumerateInstanceNames,
when only one is sufficient. 
>>>As being mentioned in the mail chain
by Kirk and Hwang.  
>>>
>>>class Person { 
>>>  [key]String name; 
>>>  Uint32 age; 
>>>} 
>>>
>>>InstanceName:- 
>>>  nameSpace:/Person.name=Pranav
==> This will give enough info to locate the instance in the repository.
But this itselt is different from Instance 
>>>Person 
>>>{ 
>>>name=Pranav; 
>>>age=x; 
>>>}; 
>>>where x is some unsinged int; 
>>>
>>>Warm Regards 
>>>D>L> Meetei  
>>>IBM India System and Technology Lab 
>>>EGL -D,Bangalore, India 
>>>
>>>
>>>
>>>From:      
 Pranav S <[email protected]> 
>>>To:      
 Kirk Augustin <[email protected]>,  
>>>Cc:      
 Venkateswara R Puvvada/India/IBM@IBMIN,
"[email protected]" <[email protected]> 
>>>Date:      
 04/17/2012 10:46 PM 
>>>Subject:    
   Re: Getting
incomplete object path 
>>>>>>________________________________
>>> 
>>>
>>>
>>>Small correction, I should have used CIMInstance,
>>>
>>>Array<CIMInstance> enumerateInstances()  == {
>>>                               
>>>        Array<CIMObjectPath>
instaNames = enumerateInstanceNames(); 
>>>                                     
Array<CIMInstance> compInstanace[i];
>>>                                     
for(i=0; i<instaNames.size(), i++) 
>>>                                         
compInstanace[i] = getInstance(instanceNames[i]));
>>>                                     
} 
>>>
>>> 
>>>On 17 April 2012 22:40, Pranav S <[email protected]>
wrote: 
>>>Hey Kirk,
>>>Pegasus::enumerateInstances should be equal to Pegasus::enumerateInstanceNames
and running Pegasus::getInstance over each individual Pegasus::CIMObjectPath
returned from enumerateInstanceNames. 
>>>
>>>Array<CIMObjectPath> enumerateInstances()  == {
>>>                                     
Array<CIMObjectPath> instaNames = enumerateInstanceNames(); 
>>>                                     
Array<CIMObjectPath> compInstanace[i];
>>>                                     
for(i=0; i<instaNames.size(), i++) 
>>>                                         
compInstanace[i] = getInstance(instanceNames[i]));
>>>                                     
}
>>>Let me know if I am still wrong here..
>>> 
>>>On 17 April 2012 22:23, Kirk Augustin <[email protected]>
wrote: 
>>>It is not clear to me what the concern is? 
>>>
>>>GetInstance() and enumerateInstances() return
complete instances of objects in the search criteria, unless filtered by
a passed in property list. 
>>>But enumerateInstanceNames() does not return
complete instances.  It only returns namespace and key property values
sufficient so that getInstance() could be used to get the rest. 
>>>
>>>Pegasus::enumerateInstances should not be
equal to Pegasus::enumerateInstanceNames. 
>>>It should return the same number of instances,
but not the same amount of information about each instance. 
>>>
>>>While Pegasus::getInstance and Pegasus::enumerateInstances
could return different number of instances, but should have the same amount
of information about each instance. 
>>>
>>>  
>>>Kirk Augustin
>>>11821 NW McNamee Rd
>>>Portland, OR 97231
>>> 
>>>HM: 503-289-4356 
>>>>>>________________________________
>>>From: Pranav S <[email protected]>
>>>To: Venkateswara R Puvvada <[email protected]> 
>>>Cc: [email protected]
>>>Sent: Tuesday, April 17, 2012 9:10 AM
>>>Subject: Re: Getting incomplete object path 
>>>
>>>Hey Venkat,
>>>
>>>I did not get what is wrong here, even DMTF says the same and Pegasus is
one of the implementation. Pegasus::enumerateInstances should be equal
to Pegasus::enumerateInstanceNames, running Pegasus::getInstance over each
individual Pegasus::CIMObjectPath retyrned from enumerateInstanceNames.
I am not getInstance will return an array.
>>>
>>> 
>>>On 17 April 2012 19:50, Pranav S <[email protected]>
wrote: 
>>>That's cool Venkat, Thank You for pointing me to the cause
for this behaviour. 
>>>
>>>
>>> 
>>>On 17 April 2012 17:29, Venkateswara R Puvvada <[email protected]>
wrote: 
>>>Per the DMTF specification, the GetInstance operation
returns an <instance>
>>>whereas EnumerateInstances returns <namedInstance>*.  So, the
return value
>>>from GetInstance is not expected to include the instance name. Please refer
>>>to the Specification for CIM Operations over HTTP:
>>>
>>>http://www.dmtf.org/sites/default/files/standards/documents/DSP200.html
>>>
>>>
>>>Regards,
>>>Venkat
>>>
>>>
>>>
>>>
>>>From:   Pranav S <[email protected]>
>>>To:     [email protected],
>>>Date:   04/14/2012 11:34 AM 
>>>Subject:        Getting incomplete
object path
>>>
>>>
>>> 
>>>Hello,
>>>
>>>I am enumerating a class instance names(Pegasus::CIMObjectPaths') using
>>>Pegasus::enumerateInstanceNames and after that doing Pegasus::getInstance
>>>on the obtained object paths. I get entire instance details, but the object
>>>path inside the obtained Pegasus::CIMInstance, is incomplete, it shows
only
>>>the creation class name, rest of the details are not embedded in the
>>>Pegasus::CIMObjectPath. I see the instance properties but only object path
>>>is incomplete.
>>>Can some one spread some light on the issue?
>>>
>>>I am using OpenPegasus 2.11.1 for client and my Cim server and provider
is
>>>from EMC.
>>>
>>>Is this EMC cim server/provider issue?
>>>
>>>--
>>>Thanks,
>>>Pranav
>>>
>>> 
>>>
>>>
>>> 
>>>-- 
>>>Thanks,
>>>Pranav
>>> 
>>>
>>>
>>>
>>>-- 
>>>Thanks,
>>>Pranav
>>> 
>>>
>>> 
>>>
>>>
>>> 
>>>-- 
>>>Thanks,
>>>Pranav
>>> 
>>>
>>>
>>>
>>>-- 
>>>Thanks,
>>>Pranav
>>> 
>>>
>>>
>>>
>
>
>-- 
>Thanks,
>Pranav
>
>
>
>
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