[CHAIN-45] Proposed code to allow decoupling of key names in contexts from key names used in Command code

• Type: New Feature
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Base

Environment

Java environments

• Assignee: Unassigned
• Reporter: Pete Ford
• Created: 15/Sep/08 15:44
• Updated: 04/Jul/13 19:32

Description

Command code typically refers to context values using fixed keys. This makes it difficult to create commands that are truly re-usable; it's often necessary to include commands to move values between keys so that the values are where the various commands expect them.

The attached code allows command code to refer to keys using a "logical" name which is mapped at runtime to the actual keys to be used to access the context. The mapping between the logical and actual names is specified per command instance and is easily set up in a catalog XML file.

The package also supports nested hierarchical contexts and allows contexts within a hierarchy to be logically mapped in a similar way.