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Key-value lookup, one-to-one mapping
Key-value lookup, one-to-one mapping
Hello,
how do I lookup a value based on a key selected in different field? I have:
- list provider in value holder where only one value can be selected
- another value holder where value should be dynamically selected based on selection in first list - there is one to one mapping.
I do not want to use association provider because I have many key/value pairs and does not make sense to create one provider for every pair. I also cannot use database provider. Any other options?
Tomas
2 Replies
For the second value holder you can make it a provider of Generic type. You'd then write your own custom provider class using the provider API. In the class you'd have a parameter which would represent the first provider. Then on the new provider you'd tell it to pass value holder 1 into this generic provider class as a parameter.
From your generic class you can use the parameter to determin which values to return.
Thank you Grant. I understand your answer conceptually, but it seems I lack some skills to do it. Will update once I learn how to write custom provider.
Regards,
Tomas
