Show dependents on the jar page

dev-resources/test-0.0.2/test.pom

@@ -12,4 +12,12 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>fake</groupId>
+      <artifactId>fake</artifactId>
+      <version>0.0.2</version>
+    </dependency>
+  </dependencies>
 </project>

resources/queries/queryfile.sql

@@ -295,6 +295,17 @@ WHERE (
   version = :version
 );
 
+--name: find-dependents
+SELECT *
+FROM deps
+WHERE (
+  dep_group_name = :groupname
+  AND
+  dep_jar_name = :jarname
+  AND
+  dep_version = :version
+);
+
 --name: all-projects
 SELECT DISTINCT group_name, jar_name
 FROM jars

src/clojars/db.clj

@@ -278,6 +278,13 @@
                           :version   version}
                          {:connection db}))
 
+(defn find-dependents
+  [db groupname jarname version]
+  (sql/find-dependents {:groupname groupname
+                        :jarname   jarname
+                        :version   version}
+                       {:connection db}))
+
 (defn all-projects [db offset-num limit-num]
   (sql/all-projects {:num limit-num
                      :offset offset-num}

src/clojars/web/jar.clj

@@ -210,15 +210,23 @@
         [:li (dependency-link db dep)])])))
 
 (defn dependencies [db {:keys [group_name jar_name version]}]
-  (dependency-section db "Dependencies" "dependencies"
-                      (remove #(not= (:scope %) "compile")
-                              (map
-                               #(set/rename-keys % {:dep_group_name :group_name
-                                                    :dep_jar_name   :jar_name
-                                                    :dep_version    :version
-                                                    :dep_scope      :scope})
-                               (db/find-dependencies db
-                                                     group_name jar_name version)))))
+  (dependency-section
+   db "Dependencies" "dependencies"
+   (into []
+         (comp
+          (filter #(= (:dep_scope %) "compile"))
+          (map
+           #(set/rename-keys % {:dep_group_name :group_name
+                                :dep_jar_name   :jar_name
+                                :dep_version    :version})))
+         (db/find-dependencies db group_name jar_name version))))
+
+(defn dependents [db {:keys [group_name jar_name version]}]
+  (dependency-section
+   db "Dependents (on Clojars)" "dependents"
+   (filter
+    #(= (:dep_scope %) "compile")
+    (db/find-dependents db group_name jar_name version))))
 
 (defn homepage [{:keys [homepage]}]
   (when homepage
@@ -295,6 +303,8 @@
        [:li (versions jar recent-versions count)]
        (when-let [dependencies (dependencies db jar)]
          [:li dependencies])
+       (when-let [dependents (dependents db jar)]
+         [:li dependents])
        (when-let [homepage (homepage jar)]
          [:li.homepage homepage])
        (when-let [licenses (licenses jar)]

test/clojars/integration/jars_test.clj

@@ -87,6 +87,14 @@
       (within [:ul#dependencies]
                (has (text? "org.clojure/clojure 1.3.0-beta1")))))
 
+(deftest canonical-jars-can-view-dependents
+  (inject-artifacts-into-repo! help/*db* "someuser" "fake.jar" "fake-0.0.2/fake.pom")
+  (inject-artifacts-into-repo! help/*db* "someuser" "test.jar" "test-0.0.2/test.pom")
+  (-> (session (help/app))
+      (visit "/fake")
+      (within [:ul#dependents]
+              (has (text? "org.clojars.dantheman/test 0.0.2")))))
+
 (deftest shadow-jars-have-a-message
   (inject-artifacts-into-repo! help/*db* "someuser" "fake.jar"
     (help/rewrite-pom (io/file (io/resource "fake-0.0.1/fake.pom"))

test/clojars/test_helper.clj

@@ -210,5 +210,4 @@
   [params m]
   `(let [db# (:db (config/config))
          audit# (first (db/find-audit db# ~params))]
-     (prn (db/find-audit db# ~params))
      (is (~'match? ~m audit#))))