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Document #121 in result set builders

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Sean Corfield 2020-07-08 23:06:44 -07:00
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doc/result-set-builders.md
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@ -34,6 +34,8 @@ An example builder that converts `snake_case` database table/column names to `ke
(result-set/as-modified-maps rs (assoc opts :qualifier-fn kebab :label-fn kebab)))) (result-set/as-modified-maps rs (assoc opts :qualifier-fn kebab :label-fn kebab))))
``` ```
If you have [camel-snake-kebab](https://clj-commons.org/camel-snake-kebab/) on your classpath, two additional builders will be available: `as-kebab-maps` and `as-unqualified-kebab-maps` which use the `->kebab-case` function from that library with `as-modified-maps` and `as-unqualified-modified-maps` respectively.
And finally there are two styles of adapters for the existing builders that let you override the default way that columns are read from result sets. And finally there are two styles of adapters for the existing builders that let you override the default way that columns are read from result sets.
The first style takes a `column-reader` function, which is called with the `ResultSet`, the `ResultSetMetaData`, and the column index, and is expected to read the raw column value from the result set and return it. The result is then passed through `read-column-by-index` (from `ReadableColumn`, which may be implemented directly via protocol extension or via metadata on the result of the `column-reader` function): The first style takes a `column-reader` function, which is called with the `ResultSet`, the `ResultSetMetaData`, and the column index, and is expected to read the raw column value from the result set and return it. The result is then passed through `read-column-by-index` (from `ReadableColumn`, which may be implemented directly via protocol extension or via metadata on the result of the `column-reader` function):