com.vmware.vise.data.query

Interface PropertyProviderAdapter

public interface PropertyProviderAdapter

Interface defining a property provider to the Data Service.

A PropertyProviderAdapter is responsible for providing properties for its advertised types and their properties. It is not a source of objects, the objects need to be fed in and the adapter returns properties on those objects.

PropertyProviderAdapters must be registered with the DataServiceExtensionRegistry in order to be called. However, when using Spring/OSGI, the adapter's registration is done automatically at the time the bundle is loaded if the adapter is registered as an osgi-service under the PropertyProviderAdapter interface, like this:

Method Summary

Methods

Modifier and Type	Method and Description
ResultSet	getProperties(PropertyRequestSpec propertyRequest) Get the data from the adapter given a set of objects and the propertySpecs corresponding to those objects.

Method Detail

getProperties

ResultSet getProperties(PropertyRequestSpec propertyRequest)

Get the data from the adapter given a set of objects and the propertySpecs corresponding to those objects.

Parameters:

propertyRequest - PropertyRequestSpec which contains the objects and the properties of those objects that are being requested from the adapter. It contains also the results (if any) which have been retrieved from DataProviderAdapters on previous step.

Each provider should register an unique set of type-property tuple.

Note: if more than one adapter had registered with the same tuple the system will randomly pick an adapter and return results from it.

Returns:

: The ResultSet containing the matched properties.