CIM Object Manager

The Common Information Model (CIM) Object Manager manages CIM objects and routes object data. CIM Object Manager is a standard executable Java class file that is started automatically as part of the post-installation process. CIM objects are represented internally as Java classes. When an application uses the client API to request or update information about a managed object, the CIM Object Manager contacts either the appropriate provider for that object or the CIM Repository, the persistent storage mechanism.

Classes, properties, and methods handled by a provider have a Provider qualifier that identifies the provider to contact for the class. When the CIM Object Manager receives a request for a class that has a Provider qualifier, it routes the request to the specified provider. If no provider is specified, it routes the request to the persistent data storage, using the Java Naming and Directory Interface (JNDI).

The CIM Object Manager can be installed and run on one or more Solaris hosts. When a WBEM-enabled client connects to a CIM Object Manager, it gets a reference to the CIM Object Manager. The client can then perform WBEM operations using this reference.

Semantic and Syntactic Checking

CIM Object Manager performs syntactical and semantic checking. Syntactical checking refers to the ability to detect an error, such as a misplaced semicolon or a forgotten brace, in a line of code. Semantic checking refers to the ability to detect an error in the rules or logic of the program. The CIM Object Manager follows rules provided by the Common Information Model, and detects deviations from CIM rules in a WBEM application.

For example, CIM rules designate that only a key property can override another key property. Class A, which is assigned a key, cannot be overwritten by Class B because Class B is not assigned a key. In this case, CIM Object Manager returns a semantic error.

Class A        
\\Define Class A 
{     
[Key]     int a;   
}    
Class B:A     
 \\Class B extends A  
{  
[overrides ("a", key (false)]   int b;   
}