R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates - Object Identifiers Revisited." Theory and Practice of Object Systems, 1(2):101 114, 1995.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....address(es) where the object can be found. An object handle is designed specifically for looking up an object s present location. It contains a Service independent Global Unique Identifier (SGUID) which is similar to a Universal Unique Identifier in DCE [15] A SGUID is a true object identifier [16]: 1) each SGUID refers to exactly one object, 2) each object has exactly one SGUID, 3) a SGUID is never reused, and (4) an object will never get another SGUID than the one initially assigned to it. An object handle will generally obey the same properties, although an object might have several ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates - Object Identifiers Revisited." Theory and Practice of Object Systems, 1(2):101 114, 1995.

....only if they are all up and running. When it comes to management issues, it is mainly referential coupling that is important. In referentially coupled systems, agents explictly refer to each other. As a consequence, references need to be systemwide unique, but may also need to be true identifiers [37]. A true identifier is a reference that cannot be reused and is associated with exactly one agent. In addition, each agent can have at most one true identifier. Generating true identifiers is practically feasible. However, the real problem lies in the dereferencing process, that is, resolving a ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates--Object Identifiers Revisited." Theory and Practice of Object Systems, 1(2):101--114, 1995.

....only if they are all up and running. When it comes to management issues, it is mainly referential coupling that is important. In referentially coupled systems, agents explictly refer to each other. As a consequence, references need to be systemwide unique, but may also need to be true identifiers [37]. A true identifier is a reference that cannot be reused and is associated with exactly one agent. In addition, each agent can have at most one true identifier. Generating true identifiers is practically feasible. However, the real problem lies in the dereferencing process, that is, resolving a ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates--Object Identifiers Revisited." Theory and Practice of Object Systems, 1(2):101--114, 1995.

....clients perform a twostep lookup process. In the first step, the symbolic name of the software package object is resolved to a locationindependent object handle. The object handle of a softwarepackage object is its permanent identifier that does not change during the lifetime of the object [10]. This resolution step is carried out by the Globe Naming Service (GNS) 1] In the second step, the object handle of the package object is mapped to the contact address of its nearest replica. This contact address contains, among other items, the IP address of the object server running the ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates--Object Identifiers Revisited." Theory and Practice of Object Systems, 1(2):101--114, 1995.

....search tree, representing a partitioning of the underlying network [2] To designate objects, the Globe location service uses universally unique identifiers called object handles. An object handle is a pure name: it contains no information or hints on how and where to locate the designated object [3, 4]. An object s location, in turn, is described by means of a contact address, which contains information on where and how to contact an object. An object handle maps to possibly several contact addresses, for example, if the object is replicated. Each node in the tree of the Globe location service ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates--Object Identifiers Revisited." Theory and Practice of Object Systems, 1(2):101--114, 1995.

....that is sent to the object server. An incoming invocation request is then unmarshaled at the server, after which the method is invoked at the object, as shown in Figure 1. The object is identified by a globally unique object identifier, referred to as a CORE OID. A CORE OID is a true identifier [23]. In particular, it contains no location information. In addition, each of the services offered by the object by means of its interfaces are identified by a separate service ID. Given a service ID, it is possible to look up the object that provides the identified service. A service ID is somewhat ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates--Object Identifiers Revisited. " Theory and Practice of Object Systems, 1(2):101--114, 1995.

....or topological partitioning of the underlying network [2] To designate objects, the Globe location service uses universally unique identifiers called object handles. An object handle is a pure name: it contains no information or hints on how and where to locate the designated object [3, 4]. An object s location, in turn, is described by means of a contact address which contains information on how to contact an object. An object handle possibly maps to several contact addresses, for example, if the object is replicated. Each node of the Globe location service maintains information ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates--Object Identifiers Revisited. " Theory and Practice of Object Systems, 1(2):101--114, 1995.

....address(es) where the object can be found. An object handle is designed specifically for looking up an object s present location. It contains a Service independent Global Unique Identifier (SGUID) which is similar to a Universal Unique Identifier in DCE [18] A SGUID is a true object identifier [19]: 1. each SGUID refers to exactly one object 2. each object has exactly one SGUID 3. a SGUID is never reused 4. an object will never get another SGUID than the one initially assigned to it An object handle will generally obey the same properties, although an object might have several object ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates - Object Identifiers Revisited. " Theory and Practice of Object Systems, 1(2):101--114, 1995.

....address(es) where the object can be found. An object handle is designed specifically for looking up an object s present location. It contains a Service independent Global Unique Identifier (SGUID) which is similar to a Universal Unique Identifier in DCE [15] A SGUID is a true object identifier [16]: 1) each SGUID refers to exactly one object, 2) each object has exactly one SGUID, 3) a SGUID is never reused, and (4) an object will never get another SGUID than the one initially assigned to it. An object handle will generally obey the same properties, although an object might have several ....

R. Wieringa and W. de Jonge. "Object Identifiers, Keys, and Surrogates - Object Identifiers Revisited." Theory and Practice of Object Systems, 1(2):101--114, 1995.

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