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Retrieve Installed packages using partnerWSDL

 
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I am creating an application for Salesforce Integration. I am trying to retrieve the installed packages from a particular account as I am able to do by using APEX class but now I want to retrieve the installed packages using PARTNERWSDL. Can any pleae help me in this regards. Thanks in advance.

MetaDataWSDL.ListMetadataQuery query = new ListMetadataQuery(); 
query.type = "InstalledPackage"; 
double asOfVersion = 29.0; 
MetadataService mBinding = new MetadataService(); 
mBinding.SessionHeaderValue.sessionId = binding.SessionHeaderValue.sessionId;  
FileProperties[] lmr = mBinding.listMetadata(new ListMetadataQuery[] { query }, asOfVersion);

Here i am getting the value as null. and I have specified the version as 29.0. May i know how can i know my version number when i am using OAuth authencation.


Attribution to: Himanshu Jain

Possible Suggestion/Solution #1

The Salesforce Metadata API is the only API that will do this for you. You can use the listMetadata operation to accomplish this, here is a previous question with answer detailing this, How to get a list of the managed packages (including version numbers) installed in an org?. If your interested in doing this from Apex, you can find a library that exposes the listMetadata method to Apex here.

Note: This applies only to managed packages installed in the org

Regarding update Java Code in Question

It looks like your not initialising mBinding.SessionHeaderValue? If you take a look at how this variable is defined it is likely you need to construct an object to assign to it, then assign the session Id. Something like this...

MetadataService mBinding = new MetadataService(); 
mBinding.SessionHeaderValue = new MetadataService.SessionHeader(); // < Something like this?
mBinding.SessionHeaderValue.sessionId = binding.SessionHeaderValue.sessionId;  

Attribution to: Andrew Fawcett
This content is remixed from stackoverflow or stackexchange. Please visit https://salesforce.stackexchange.com/questions/30953

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