Re: Java annotations on functions, in conjunction with gen-class?
Ryan Cole writes:
> Hi all, beginner here,
>
> I'm trying to write a Minecraft plugin in Clojure, and use AOT so that the
> Minecraft server can load it right up. I've got this much going, and all as
> well. The server expect some of my functions in a class that I'm extending
> to use an appropriate annotation on the function.
>
> How do I add these annotations? I've Googled around and see that it looks
> like support for this was added back in 2010, so I'm sure it's possible.
> Maybe I've seen the solution but didn't realize that it was a solution.
> Clojure still looks pretty alien to me, so crazy things like this are rough
> to search for and realize when the answer is in front of me.
Annotations are added as metadata to functions in a deftype definition.
Something like this (untested):
(deftype MyType []
SomeInterface
(^{EventHandler {}} onPlayerLogin [event] ...))
For some examples of using annotations:
https://github.com/pallet/clojure-maven/blob/develop/mojo/src/main/clojure/clojure/maven/mojo/defmojo.clj#L45
https://github.com/pallet/zi/blob/develop/src/main/clojure/zi/test.clj#L109
I'm afraid it's not very friendly code if you're new to clojure.
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Re: Java annotations on functions, in conjunction with gen-class?
Yea, I've seen that. It does the plugins a little differently. I did not
see any examples of function annotations in his Clojure code, though.
Ryan
On Friday, January 25, 2013 5:08:49 PM UTC-6, AtKaaZ wrote:
>
> Hi. Check this out: https://github.com/CmdrDats/clj-minecraft
>
>
> On Fri, Jan 25, 2013 at 11:14 PM, Ryan Cole
> > wrote:
>
>> Hi all, beginner here,
>>
>> I'm trying to write a Minecraft plugin in Clojure, and use AOT so that
>> the Minecraft server can load it right up. I've got this much going, and
>> all as well. The server expect some of my functions in a class that I'm
>> extending to use an appropriate annotation on the function.
>>
>> How do I add these annotations? I've Googled around and see that it looks
>> like support for this was added back in 2010, so I'm sure it's possible.
>> Maybe I've seen the solution but didn't realize that it was a solution.
>> Clojure still looks pretty alien to me, so crazy things like this are rough
>> to search for and realize when the answer is in front of me.
>>
>> For example, the Java document for the Minecraft server says that my
>> function should conform to the following definition:
>>
>> ```
>>
>> @EventHandlerpublic void onPlayerLogin(PlayerLoginEvent event) {
>> // Your code here...}
>>
>> ```
>>
>>
>> I've got the following Clojure code that the server will actually load and
>> it will call the `onEnable` and `onDisable` function here, but the one that
>> requires the annotation does not get called.
>>
>>
>> ```
>>
>> (ns com.github.ryancole.bukkit.hello-world
>> (:import [org.bukkit Bukkit])
>> (:gen-class :extends org.bukkit.plugin.java.JavaPlugin
>> :name com.github.ryancole.bukkit.hello-world.Hello
>> :prefix hello-))
>>
>> (defn hello-onEnable [this]
>> (.info (.getLogger this) "hello world has been enabled"))
>>
>> (defn hello-onDisable [this]
>> (.info (.getLogger this) "hello world has been disabled"))
>>
>> (defn hello-onPlayerLogin [this evnt]
>> (.info (.getLogger this) "player logged in"))
>>
>> ```
>>
>>
>> Any ideas?
>>
>> --
>> --
>> You received this message because you are subscribed to the Google
>> Groups "Clojure" group.
>> To post to this group, send email to clo...@googlegroups.com
>> Note that posts from new members are moderated - please be patient with
>> your first post.
>> To unsubscribe from this group, send email to
>> clojure+u...@googlegroups.com
>> For more options, visit this group at
>> http://groups.google.com/group/clojure?hl=en
>>
>>
>>
>
>
>
> --
> I may be wrong or incomplete.
> Please express any corrections / additions,
> they are encouraged and appreciated.
> At least one entity is bound to be transformed if you do ;)
>
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Re: Java annotations on functions, in conjunction with gen-class?
Hi. Check this out: https://github.com/CmdrDats/clj-minecraft
On Fri, Jan 25, 2013 at 11:14 PM, Ryan Cole wrote:
> Hi all, beginner here,
>
> I'm trying to write a Minecraft plugin in Clojure, and use AOT so that the
> Minecraft server can load it right up. I've got this much going, and all as
> well. The server expect some of my functions in a class that I'm extending
> to use an appropriate annotation on the function.
>
> How do I add these annotations? I've Googled around and see that it looks
> like support for this was added back in 2010, so I'm sure it's possible.
> Maybe I've seen the solution but didn't realize that it was a solution.
> Clojure still looks pretty alien to me, so crazy things like this are rough
> to search for and realize when the answer is in front of me.
>
> For example, the Java document for the Minecraft server says that my
> function should conform to the following definition:
>
> ```
>
> @EventHandlerpublic void onPlayerLogin(PlayerLoginEvent event) {
> // Your code here...}
>
> ```
>
>
> I've got the following Clojure code that the server will actually load and it
> will call the `onEnable` and `onDisable` function here, but the one that
> requires the annotation does not get called.
>
>
> ```
>
> (ns com.github.ryancole.bukkit.hello-world
> (:import [org.bukkit Bukkit])
> (:gen-class :extends org.bukkit.plugin.java.JavaPlugin
> :name com.github.ryancole.bukkit.hello-world.Hello
> :prefix hello-))
>
> (defn hello-onEnable [this]
> (.info (.getLogger this) "hello world has been enabled"))
>
> (defn hello-onDisable [this]
> (.info (.getLogger this) "hello world has been disabled"))
>
> (defn hello-onPlayerLogin [this evnt]
> (.info (.getLogger this) "player logged in"))
>
> ```
>
>
> Any ideas?
>
> --
> --
> You received this message because you are subscribed to the Google
> Groups "Clojure" group.
> To post to this group, send email to clojure@googlegroups.com
> Note that posts from new members are moderated - please be patient with
> your first post.
> To unsubscribe from this group, send email to
> clojure+unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/clojure?hl=en
>
>
>
--
I may be wrong or incomplete.
Please express any corrections / additions,
they are encouraged and appreciated.
At least one entity is bound to be transformed if you do ;)
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Java annotations on functions, in conjunction with gen-class?
Hi all, beginner here,
I'm trying to write a Minecraft plugin in Clojure, and use AOT so that the
Minecraft server can load it right up. I've got this much going, and all as
well. The server expect some of my functions in a class that I'm extending
to use an appropriate annotation on the function.
How do I add these annotations? I've Googled around and see that it looks
like support for this was added back in 2010, so I'm sure it's possible.
Maybe I've seen the solution but didn't realize that it was a solution.
Clojure still looks pretty alien to me, so crazy things like this are rough
to search for and realize when the answer is in front of me.
For example, the Java document for the Minecraft server says that my
function should conform to the following definition:
```
@EventHandlerpublic void onPlayerLogin(PlayerLoginEvent event) {
// Your code here...}
```
I've got the following Clojure code that the server will actually load and it
will call the `onEnable` and `onDisable` function here, but the one that
requires the annotation does not get called.
```
(ns com.github.ryancole.bukkit.hello-world
(:import [org.bukkit Bukkit])
(:gen-class :extends org.bukkit.plugin.java.JavaPlugin
:name com.github.ryancole.bukkit.hello-world.Hello
:prefix hello-))
(defn hello-onEnable [this]
(.info (.getLogger this) "hello world has been enabled"))
(defn hello-onDisable [this]
(.info (.getLogger this) "hello world has been disabled"))
(defn hello-onPlayerLogin [this evnt]
(.info (.getLogger this) "player logged in"))
```
Any ideas?
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