Add a Leiningen template (#47)

lein-template/.gitignore

@@ -0,0 +1,12 @@
+/target
+/classes
+/checkouts
+pom.xml
+pom.xml.asc
+*.jar
+*.class
+/.lein-*
+/.nrepl-port
+/.prepl-port
+.hgignore
+.hg/

lein-template/project.clj

@@ -0,0 +1,6 @@
+(defproject com.github.clojure-finance/lein-template.datajure "1.1.0"
+  :description "Leiningen template for a Datajure application."
+  :url "https://github.com/clojure-finance/datajure/tree/main/lein-template"
+  :license {:name "The MIT License"
+            :url "http://opensource.org/licenses/MIT"}
+  :eval-in-leiningen true)

lein-template/resources/leiningen/new/datajure/README.md

@@ -0,0 +1 @@
+# {{name}}

lein-template/resources/leiningen/new/datajure/core.clj

@@ -0,0 +1,14 @@
+(ns {{namespace}}.core
+  (:require
+   [datajure.dsl :as dtj]))
+
+(defn -main
+  []
+  (dtj/set-backend "tech.ml.dataset")
+  (def data {:age [31 25 18 18 25]
+             :name ["a" "b" "c" "c" "d"]
+             :salary [200 500 200 370 3500]})
+  (-> data
+      (dtj/dataset)
+      (dtj/query [[:salary #(< 300 %)] [:age #(> 20 %)]] [])
+      (dtj/print)))

lein-template/resources/leiningen/new/datajure/gitignore

@@ -0,0 +1,14 @@
+pom.xml
+pom.xml.asc
+*.jar
+*.class
+/lib/
+/classes/
+/target/
+/checkouts/
+.lein-deps-sum
+.lein-repl-history
+.lein-plugins/
+.lein-failures
+.nrepl-port
+.cpcache/

lein-template/resources/leiningen/new/datajure/project.clj

@@ -0,0 +1,19 @@
+(defproject {{raw-name}} "0.1.0-SNAPSHOT"
+  :description "FIXME: write description"
+  :url "http://example.com/FIXME"
+  :license {:name "EPL-2.0 OR GPL-2.0-or-later WITH Classpath-exception-2.0"
+            :url "https://www.eclipse.org/legal/epl-2.0/"}
+  :jvm-opts ["--add-opens=java.base/java.nio=ALL-UNNAMED"
+             "--add-opens=java.base/java.net=ALL-UNNAMED"
+             "--add-opens=java.base/java.lang=ALL-UNNAMED"
+             "--add-opens=java.base/java.util=ALL-UNNAMED"
+             "--add-opens=java.base/java.util.concurrent=ALL-UNNAMED"
+             "--add-opens=java.base/sun.nio.ch=ALL-UNNAMED"]
+  :dependencies [[com.github.clojure-finance/datajure "1.1.0"]
+                 [org.apache.logging.log4j/log4j-core "2.21.0"]
+                 [org.clojure/clojure "1.11.1"]]
+  :jar-name "{{raw-name}}.jar"
+  :uberjar-name "{{raw-name}}-standalone.jar"
+  :profiles {:uberjar {:aot :all}}
+  :main ^:skip-aot {{namespace}}.core
+  :target-path "target/%s")

lein-template/src/leiningen/new/datajure.clj

@@ -0,0 +1,20 @@
+(ns leiningen.new.datajure
+  (:require [leiningen.new.templates :as tmpl]
+            [leiningen.core.main :as main]))
+
+(def render (tmpl/renderer "datajure"))
+
+(defn datajure
+  "A Datajure project template."
+  [name]
+  (let [main-ns (tmpl/sanitize-ns name)
+        data    {:raw-name    name
+                 :name        (tmpl/project-name name)
+                 :namespace   main-ns
+                 :nested-dirs (tmpl/name-to-path main-ns)}]
+    (main/info "Generating fresh 'lein new' com.github.clojure-finance/datajure project.")
+    (tmpl/->files data
+                  [".gitignore" (render "gitignore" data)]
+                  ["README.md" (render "README.md" data)]
+                  ["project.clj" (render "project.clj" data)]
+                  ["src/{{nested-dirs}}/core.clj" (render "core.clj" data)])))