Proxy

A Proxy object is the representant of an Ubik object (istance) for one Interface.

One Proxy object can handle both, import and export of the same Ubik instance via one interface.

A Proxy object MUST HAVE a MetaProxy defined as its MetaClass!

The Proxy object has a "normal" Property for every MetaProperty defined on its MetaProxy.

The Proxy object has a Proxy Property for every ProxyMetaProperty defined on its MetaProxy (via the Relation "SYSREL_METAPROXY_PROPERTY").

Every Proxy properties supports access to multiple data of the same data field:

• Current value in Ubik
• Timestamp of the current value
• Exported value
• Timestamp of the export
• Import value
• Timestamp of the import

Current Value

• Current value stored on the object in the system
• Timestamp the value was set. If it is the initial value, the timestamp is equal to the CTS of the object

The current value is stored on the origin UBIK object.

Exported Value

• Value that was exported (and comited) via an export interface run
• Timestamp the value was exported. This is the timestamp when the export of the object was triggered

The exported value is stored on the proxy object.

Imported Value

• Value that was imported via an import interface run
• Timestamp the value was imported. This is the timestamp when the import of the object was triggered

The imported value is stored on the proxy object.

Every proxy objects supports two interface states:

• Export state
• Import state

Export states

Import states