On 05/10/14 22:28, Lester Caine wrote:
All achievable if the API monitors the constraints on relations and checks that what JOSM submits is complete.
That would represent a radical change in design philosophy. At the moment, the code behind the API ("I" standards interface) implements very few business rules. All it really knows about relations is that all the members must be currently live objects. It implements the business rules by refusing changes outright.
The big advantage of that approach is that it allows decentralised addition of new features. Anyone can add a new tag, tag value, or relation type and create clients and, possibly, renderers that use them, without needing a central authority to write code to support them.
Currently, it is the editors that implement business rules. Whilst you could have common libraries, JOSM would need a Java one, but other clients would need ones for other languages or platforms.
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