January 2018
Intermediate to advanced
336 pages
7h 56m
English
Content preview from Microservices with Clojure
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Creating a persistence adapter
Persistence protocol ServiceDB consists of upsert, entity, and delete functions, similar to the Provider service, that are defined in the persistence.clj source file, as shown here:
(ns helping-hands.service.persistence "Persistence Port and Adapter for Service" (:require [datomic.api :as d]));; --------------------------------------------------;; Service Persistence Port for Adapters to Plug-in;; --------------------------------------------------(defprotocol ServiceDB "Abstraction for service database" (upsert [this id type provider area cost rating status] "Adds/Updates a service entity") (entity [this id flds] "Gets the specified service with all or requested fields") (delete [this id] "Deletes the specified ...
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