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Posted to users@maven.apache.org by stug23 <pa...@gmail.com> on 2008/10/17 20:13:19 UTC
Multiple executions of goals under generate-sources: How to avoid?
I am working on a code generator plugin that ends up being executed multiple
times when in fact I only want it to execute once in the generate-sources
phase.
According to this posting
<http://www.mail-archive.com/users@maven.apache.org/msg78484.html> this is
an expected behavior.
How do I avoid multiple executions of my code generator which needs to run
in the generate-sources phase?
TIA
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Re: Multiple executions of goals under generate-sources: How to
avoid?
Posted by stug23 <pa...@gmail.com>.
The approach that I used could be applied for any mojo.
Below is an outline of the basic code I used in the mojo execute() method.
I simply create a new property (generation.finished) that I can check for on
subsequent executions of the mojo:
------------------------------
Object generationFinished =
this.mavenProject.getProperties().get("generation.finished");
boolean generationIsFinished = (generationFinished == null) ? false: true;
if (generationIsFinished) {
getLog().info("skipping code generation ... source code is up to date");
} else {
getLog().info("Starting code generation ...");
...
..
.
// mark the code generation as complete:
this.mavenProject.getProperties().put("generation.finished", "true");
}
------------------------------
ZsJoska wrote:
>
> Do you have a sample for doing that? It's your solution generic?
> I have a web services client application where I generate the artifact
> sources during the generate-sources phase. In order to import the latest
> version of the wsdl I try to kick-up a jetty server with the war produced
> by another module.
> The second execution of the jetty stops the build with error Address
> already in use.
>
> Thanks,
> Jozsef
>
>
> stug23 wrote:
>>
>> Lacking any other solution I went ahead and incorporated an internal
>> Maven property that gets set at the end of the first code generation in
>> the lifecycle. That way subsequent checks of the property provide an
>> indication to skip code generation.
>>
>> This seems kind of kludgy but it works ....
>>
>>
>>
>
>
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Re: Multiple executions of goals under generate-sources: How to
avoid?
Posted by stug23 <pa...@gmail.com>.
Lacking any other solution I went ahead and incorporated an internal Maven
property that gets set at the end of the first code generation in the
lifecycle. That way subsequent checks of the property provide an indication
to skip code generation.
This seems kind of kludgy but it works ....
stug23 wrote:
>
> As a clarification, the execution that I am trying to avoid is the second
> execution of a code generator mojo that is bound to generate-sources
> phase.
>
> The second execution results from uses the maven-sources-plugin which
> states:
>
> "Invokes the execution of the lifecycle phase generate-sources prior to
> executing itself."
>
> The information above is from the following reference:
>
> <http://maven.apache.org/plugins/maven-source-plugin/jar-mojo.html>
>
> So my question is: "Is there a way to still produce a sources jar using
> the maven-source-plugin without invoking execution of the generate-sources
> phase?"
>
> It doesn't make sense to me that this invocation cannot be switched off
> since the code generation has already taken place and it's not very
> efficient to perform code generation all over again in a subsequent
> lifecycle phase. Perhaps there are cases where this is needed, but mine is
> not one of them, so I am hoping that someone can help me to disable this
> feature of the maven-source-plugin.
>
> TIA
>
>
>
>
> stug23 wrote:
>>
>> I am working on a code generator plugin that ends up being executed
>> multiple times when in fact I only want it to execute once in the
>> generate-sources phase.
>>
>> According to this posting
>> <http://www.mail-archive.com/users@maven.apache.org/msg78484.html> this
>> is an expected behavior.
>>
>> How do I avoid multiple executions of my code generator which needs to
>> run in the generate-sources phase?
>>
>> TIA
>>
>>
>
>
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Re: Multiple executions of goals under generate-sources: How to avoid?
Posted by ji...@gmail.com.
On Sat, Oct 18, 2008 at 11:00 AM, stug23 <pa...@gmail.com> wrote:
>
> So my question is: "Is there a way to still produce a sources jar using the
> maven-source-plugin without invoking execution of the generate-sources
> phase?"
>
I am extremely interested in the answer to this question as well.
Please Maven experts, help! :-)
-jieryn
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Re: Multiple executions of goals under generate-sources: How to
avoid?
Posted by stug23 <pa...@gmail.com>.
As a clarification, the execution that I am trying to avoid is the second
execution of a code generator mojo that is bound to generate-sources phase.
The second execution results from uses the maven-sources-plugin which
states:
"Invokes the execution of the lifecycle phase generate-sources prior to
executing itself."
The information above is from the following reference:
<http://maven.apache.org/plugins/maven-source-plugin/jar-mojo.html>
So my question is: "Is there a way to still produce a sources jar using the
maven-source-plugin without invoking execution of the generate-sources
phase?"
It doesn't make sense to me that this invocation cannot be switched off
since the code generation has already taken place and it's not very
efficient to perform code generation all over again in a subsequent
lifecycle phase. Perhaps there are cases where this is needed, but mine is
not one of them, so I am hoping that someone can help me to disable this
feature of the maven-source-plugin.
TIA
stug23 wrote:
>
> I am working on a code generator plugin that ends up being executed
> multiple times when in fact I only want it to execute once in the
> generate-sources phase.
>
> According to this posting
> <http://www.mail-archive.com/users@maven.apache.org/msg78484.html> this is
> an expected behavior.
>
> How do I avoid multiple executions of my code generator which needs to run
> in the generate-sources phase?
>
> TIA
>
>
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