Clojure introduction of another Java class implemented by Clojure

That's a bit of a detour, that's what happened.

CORE.CLJ file to use a Java class, this Java Class (Movedailyaction) is generated by the Clojure code of the same project, Clojure Java class Please refer to the previous blog

Clojure Implementing Java Classes

Now it is necessary to place the class file of the Java class generated by Clojure in the specified directory, and then let Core.clj be able to refer to the class file. This is mainly by Leiningen engineering configuration

The first one needs to be set with Compile-path

: Compile-path "%s/classy-files"

The compilation results will appear in the following directory

LS target/uberjar+uberjar/classy-files/kafka2hdfs/core.class                        core$_main.class                  movedailyaction$_ Execute.class  movedailyaction$loading__4910__auto__.classcore$fn__48.class                 core$mk_topology.class            Movedailyaction$fn__26.classcore__init.class                  core$submit_topology_bang_.class  MoveDailyAction__ Init.classcore$loading__4910__auto__.class  movedailyaction.class             movedailyaction$_init.class

The second one needs to be set with Java-source-paths

: java-source-paths ["%s/classy-files"]

This allows you to use the first-step compiled class file.

Note: The Clojure class that is dependent on the AOT setting needs to be compiled first, so put it in front

: AOT [Kafka2hdfs. Movedailyaction Kafka2hdfs.core]

Now run the command to compile it:

Lein do clean, Uberjar

Complete.

Leiningen official documentation is not documented Compile-path, you can refer to GitHub's example

Https://github.com/technomancy/leiningen/blob/master/sample.project.clj

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Clojure introduction of another Java class implemented by Clojure