You use the invokeMethod interface to call a method in a class supported by a provider. To retrieve the signature of a method, an application must first get the definition of the class to which the method belongs. The invokeMethod method returns a CIMValue. The return value is null when the method that you invoke does not define a return value.
The invokeMethod interface takes four arguments, as described in the following table.
Table 4–4 invokeMethod Parameters
Parameter |
Data Type |
Description |
---|---|---|
name |
CIMObjectPath |
The name of the instance on which the method must be invoked |
methodName |
String |
The name of the method to call |
inParams |
Vector |
Input parameters to pass to the method |
outParams |
Vector |
Output parameters to get from the method |
This example gets the instances of the CIM_Service class, which represent services that manage device or software features. The example uses the invokeMethod method to stop each service.
{ ... /* Pass the CIM Object Path of the CIM_Service class to the CIM Object Manager. We want to invoke a method defined in this class. */ CIMObjectPath op = new CIMObjectPath("CIM_Service"); /* The CIM Object Manager returns an enumeration of instance object paths, the names of instances of the CIM_Service class. */ Enumeration e = cc.enumerateInstanceNames (op, true); /* Iterate through the enumeration of instance object paths */ while(e.hasMoreElements()) { // Get the instance CIMObjectPath op = (CIMObjectPath) e.nextElement(); //Invoke the Stop Service method to stop the CIM services. cc.invokeMethod("StopService", null, null); } }