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Posted to users@maven.apache.org by "christofer.dutz@c-ware.de" <ch...@c-ware.de> on 2013/02/27 12:30:53 UTC
Is there any generic Maven code generator?
I just posted this to Stackoverflow, but after posting I realized, that I should have come here first :-(
I am currently working on a project, that makes intense usage of code generation for various purposes. One generator generates SQL scripts from jpa entities. Another generates DTOs from pojos, another generates the JPA2.0 meta model, jet another generates some xml and schema files based on Java classes ... each generator works completely different needs to be configured differently.
My question now is ... is there any generic maven code generator plugin out there with the following attributes:
*
Creates a pojo model of a Java class (Names, Properties, Annotation, Methods ...)
*
Uses templates for defining the output that uses the pojo model to generate any output.
*
Allows me to specify multiple templates for one class
*
Allows me to generate code and resources
*
Allows me to generate a base class to target/generated-sources and a dummy implementation to src/main/java which simply extends the base class (If the dummy class in src/main/java exists, nothing happens, if it doesn't it generates such a dummy class. This code is checked in to the SCM and allows extending the generated classes manually)
I am using the Flexmojos GraniteDS plugin for generating my ActionScript model code, but it's pretty specialized for that particular purpose.
I think such a generic generator would make things a lot easier ... is there something like that available out there, or do I have to start implementing it myself?
Chris
Re: AW: Is there any generic Maven code generator?
Posted by Patrick Turcotte <pa...@revolutionlinux.com>.
Take a look at appfuse ( http://appfuse.org/display/APF/Home), there may be some inspiration in how do things.
Patrick
On 13-02-28 04:57 AM, christofer.dutz@c-ware.de wrote:
> Ahem ... this wasn't quite the path I was indenting to go with my question.
>
> What I am looking for is a generator-plugin that uses a template engine (such as Velocity) to generate code, and uses as input an pojo-object model representing the details of a Java class that it should generate code for.
>
> Now I would like to have (or create, if I have to) a plugin, that allows me to specify which classes I am addressing using some include/exclude config.
>
> I could configure different include/exclude groups, each one in one execution and for each I could provide a set of:
> - resourceTemplates
> - testResourceTemplates
> - sourceStubTemplates
> - sourceTemplates
> - testSourceStubTemplates
> - testSourceTemplates
> - ...
> So for each matched class, I could generage:
> - resources into the target/generated-resources directory using the resourceTemplates (could be more than one)
> - testResources into the target/generates-test-resources directory using the testResourceTemplates, ...
> - source code into target/generated-sources ...
> - test source code into target/generated-test-sources ...
>
> One speciality I liked with GraniteDS was the ability to have auto-generated stub-classes generated in src/main/java ... if a class allready existed, no code would be generated, but if a class didn't exist, it would be generated. This was great for creating classes that extend other generated classes and to allow customization. Something simple as this:
>
> public class MyClass extends MyClassBase {
> }
>
> And MyClassBase is generated to target/generated-sources.
>
> With such a plugin I could be able to generate my JPA MetaModel classes, my DTOs, SQL scripts, ... and wouldn't have to configure thousands of different generators. People could develop best-practice templates for general purpose tasks.
>
> Hope this clarified, what I was looking for.
>
> If nothing similar exists, I would like to start developing something like this, because I think it would make my life a lot easier.
>
> Chris
>
> ________________________________________
> Von: Stadelmann Josef [josef.stadelmann@axa-winterthur.ch]
> Gesendet: Donnerstag, 28. Februar 2013 09:52
> An: Maven Users List
> Betreff: AW: Is there any generic Maven code generator?
>
> A code generator needs input. Hence some "generic formal language" is used to specify the input to the genric code generator? UML? Visualization of a generic language could mean - speak UML, UML is a reality today. UML modells can says much more then 1000 words? Hence I opt for better integration of modelling tools with maven. Also roundtrip engineering is a must. Enterprise Architect (EA) is able to generate code from UML and other diagrams for many target compiler and it helps you to have code, modell and documentation in sync. And EA can be feed with code and generates your diagramms. A task which only ends when the modells become to complex. Maven is much about geting and nailing dependent components together. If maven finds the dependecies, a tool like EA could use input to draw i.e. the component diagram, maybe a maven plugin can pave the way for EA. Other whise, in my mind, there are far too many tools around and I get to often the feeling that each time a problem developes, folk starts to seek a tool to avoid some brain work. So if one knows in which aspects maven poms could be used toward EA to get ceratin artiacs visualized for better understanding, that would be almost a very good step into proper direction. Josef
>
>
> -----Ursprüngliche Nachricht-----
> Von: christofer.dutz@c-ware.de [mailto:christofer.dutz@c-ware.de]
> Gesendet: Mittwoch, 27. Februar 2013 12:31
> An: users@maven.apache.org
> Betreff: Is there any generic Maven code generator?
>
> I just posted this to Stackoverflow, but after posting I realized, that I should have come here first :-(
>
>
> I am currently working on a project, that makes intense usage of code generation for various purposes. One generator generates SQL scripts from jpa entities. Another generates DTOs from pojos, another generates the JPA2.0 meta model, jet another generates some xml and schema files based on Java classes ... each generator works completely different needs to be configured differently.
>
> My question now is ... is there any generic maven code generator plugin out there with the following attributes:
>
> *
> Creates a pojo model of a Java class (Names, Properties, Annotation, Methods ...)
> *
> Uses templates for defining the output that uses the pojo model to generate any output.
> *
> Allows me to specify multiple templates for one class
> *
> Allows me to generate code and resources
> *
> Allows me to generate a base class to target/generated-sources and a dummy implementation to src/main/java which simply extends the base class (If the dummy class in src/main/java exists, nothing happens, if it doesn't it generates such a dummy class. This code is checked in to the SCM and allows extending the generated classes manually)
>
> I am using the Flexmojos GraniteDS plugin for generating my ActionScript model code, but it's pretty specialized for that particular purpose.
>
> I think such a generic generator would make things a lot easier ... is there something like that available out there, or do I have to start implementing it myself?
>
> Chris
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
--
Patrick Turcotte
Directeur technologique
------------------------------------------------
patrick.turcotte@revolutionlinux.com
(819) 780-8955, poste 1129
Sans frais 1-800-996-8955, poste 1129
AW: Is there any generic Maven code generator?
Posted by "christofer.dutz@c-ware.de" <ch...@c-ware.de>.
Well I guess, I will eventually whip up such a plugin myself, cause I really need to cleanup quite a code-generation mess.
Eventually based upon the GraniteDS libs, as does the Flexmojos plugin.
Chris
-----Ursprüngliche Nachricht-----
Von: bmathus@gmail.com [mailto:bmathus@gmail.com] Im Auftrag von Baptiste MATHUS
Gesendet: Freitag, 1. März 2013 08:02
An: Maven Users List
Betreff: Re: Is there any generic Maven code generator?
The following is not going to really help you, but I just wanted to point out that a plugin was recently initiated at mojo (still in the sandbox) dedicated to templating (called templating-maven-plugin).
It's currently only supporting Maven sources filtering, but the plan is to support different templating engines like velocity or mustache for example.
Cheers
Le 28 févr. 2013 12:17, "Anders Hammar" <an...@hammar.net> a écrit :
> I haven't seen any generator plugin that does what you're looking for.
>
> Wearing a Maven hat, I don't think that having these stub classes
> generated to src/main/java belongs to the build lifecycle. It's a
> separate process that should be executed outside of a Maven build. SO
> you would then have a separate goal for that is not bound to a phase by default.
>
> /Anders
>
>
> On Thu, Feb 28, 2013 at 10:57 AM, christofer.dutz@c-ware.de <
> christofer.dutz@c-ware.de> wrote:
>
> > Ahem ... this wasn't quite the path I was indenting to go with my
> question.
> >
> > What I am looking for is a generator-plugin that uses a template
> > engine (such as Velocity) to generate code, and uses as input an
> > pojo-object
> model
> > representing the details of a Java class that it should generate
> > code
> for.
> >
> > Now I would like to have (or create, if I have to) a plugin, that
> > allows me to specify which classes I am addressing using some
> > include/exclude config.
> >
> > I could configure different include/exclude groups, each one in one
> > execution and for each I could provide a set of:
> > - resourceTemplates
> > - testResourceTemplates
> > - sourceStubTemplates
> > - sourceTemplates
> > - testSourceStubTemplates
> > - testSourceTemplates
> > - ...
> > So for each matched class, I could generage:
> > - resources into the target/generated-resources directory using the
> > resourceTemplates (could be more than one)
> > - testResources into the target/generates-test-resources directory
> > using the testResourceTemplates, ...
> > - source code into target/generated-sources ...
> > - test source code into target/generated-test-sources ...
> >
> > One speciality I liked with GraniteDS was the ability to have
> > auto-generated stub-classes generated in src/main/java ... if a
> > class allready existed, no code would be generated, but if a class
> > didn't
> exist,
> > it would be generated. This was great for creating classes that
> > extend other generated classes and to allow customization. Something
> > simple as
> > this:
> >
> > public class MyClass extends MyClassBase { }
> >
> > And MyClassBase is generated to target/generated-sources.
> >
> > With such a plugin I could be able to generate my JPA MetaModel
> > classes, my DTOs, SQL scripts, ... and wouldn't have to configure
> > thousands of different generators. People could develop
> > best-practice templates for general purpose tasks.
> >
> > Hope this clarified, what I was looking for.
> >
> > If nothing similar exists, I would like to start developing
> > something
> like
> > this, because I think it would make my life a lot easier.
> >
> > Chris
> >
> > ________________________________________
> > Von: Stadelmann Josef [josef.stadelmann@axa-winterthur.ch]
> > Gesendet: Donnerstag, 28. Februar 2013 09:52
> > An: Maven Users List
> > Betreff: AW: Is there any generic Maven code generator?
> >
> > A code generator needs input. Hence some "generic formal language"
> > is
> used
> > to specify the input to the genric code generator? UML?
> > Visualization of
> a
> > generic language could mean - speak UML, UML is a reality today. UML
> > modells can says much more then 1000 words? Hence I opt for better
> > integration of modelling tools with maven. Also roundtrip
> > engineering is
> a
> > must. Enterprise Architect (EA) is able to generate code from UML
> > and
> other
> > diagrams for many target compiler and it helps you to have code,
> > modell
> and
> > documentation in sync. And EA can be feed with code and generates
> > your diagramms. A task which only ends when the modells become to complex.
> Maven
> > is much about geting and nailing dependent components together. If
> > maven finds the dependecies, a tool like EA could use input to draw
> > i.e. the component diagram, maybe a maven plugin can pave the way
> > for EA. Other whise, in my mind, there are far too many tools around
> > and I get to often the feeling that each time a problem developes,
> > folk starts to seek a
> tool
> > to avoid some brain work. So if one knows in which aspects maven
> > poms
> could
> > be used toward EA to get ceratin artiacs visualized for better
> > understanding, that would be almost a very good step into proper
> direction.
> > Josef
> >
> >
> > -----Ursprüngliche Nachricht-----
> > Von: christofer.dutz@c-ware.de [mailto:christofer.dutz@c-ware.de]
> > Gesendet: Mittwoch, 27. Februar 2013 12:31
> > An: users@maven.apache.org
> > Betreff: Is there any generic Maven code generator?
> >
> > I just posted this to Stackoverflow, but after posting I realized,
> > that I should have come here first :-(
> >
> >
> > I am currently working on a project, that makes intense usage of
> > code generation for various purposes. One generator generates SQL
> > scripts from jpa entities. Another generates DTOs from pojos,
> > another generates the
> > JPA2.0 meta model, jet another generates some xml and schema files
> > based
> on
> > Java classes ... each generator works completely different needs to
> > be configured differently.
> >
> > My question now is ... is there any generic maven code generator
> > plugin out there with the following attributes:
> >
> > *
> > Creates a pojo model of a Java class (Names, Properties, Annotation,
> > Methods ...)
> > *
> > Uses templates for defining the output that uses the pojo model to
> > generate any output.
> > *
> > Allows me to specify multiple templates for one class
> > *
> > Allows me to generate code and resources
> > *
> > Allows me to generate a base class to target/generated-sources and a
> dummy
> > implementation to src/main/java which simply extends the base class
> > (If
> the
> > dummy class in src/main/java exists, nothing happens, if it doesn't
> > it generates such a dummy class. This code is checked in to the SCM
> > and
> allows
> > extending the generated classes manually)
> >
> > I am using the Flexmojos GraniteDS plugin for generating my
> > ActionScript model code, but it's pretty specialized for that particular purpose.
> >
> > I think such a generic generator would make things a lot easier ...
> > is there something like that available out there, or do I have to
> > start implementing it myself?
> >
> > Chris
> >
> > --------------------------------------------------------------------
> > - To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > For additional commands, e-mail: users-help@maven.apache.org
> > --------------------------------------------------------------------
> > - To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > For additional commands, e-mail: users-help@maven.apache.org
> >
> >
>
Re: Is there any generic Maven code generator?
Posted by Baptiste MATHUS <ml...@batmat.net>.
The following is not going to really help you, but I just wanted to point
out that a plugin was recently initiated at mojo (still in the sandbox)
dedicated to templating (called templating-maven-plugin).
It's currently only supporting Maven sources filtering, but the plan is to
support different templating engines like velocity or mustache for example.
Cheers
Le 28 févr. 2013 12:17, "Anders Hammar" <an...@hammar.net> a écrit :
> I haven't seen any generator plugin that does what you're looking for.
>
> Wearing a Maven hat, I don't think that having these stub classes generated
> to src/main/java belongs to the build lifecycle. It's a separate process
> that should be executed outside of a Maven build. SO you would then have a
> separate goal for that is not bound to a phase by default.
>
> /Anders
>
>
> On Thu, Feb 28, 2013 at 10:57 AM, christofer.dutz@c-ware.de <
> christofer.dutz@c-ware.de> wrote:
>
> > Ahem ... this wasn't quite the path I was indenting to go with my
> question.
> >
> > What I am looking for is a generator-plugin that uses a template engine
> > (such as Velocity) to generate code, and uses as input an pojo-object
> model
> > representing the details of a Java class that it should generate code
> for.
> >
> > Now I would like to have (or create, if I have to) a plugin, that allows
> > me to specify which classes I am addressing using some include/exclude
> > config.
> >
> > I could configure different include/exclude groups, each one in one
> > execution and for each I could provide a set of:
> > - resourceTemplates
> > - testResourceTemplates
> > - sourceStubTemplates
> > - sourceTemplates
> > - testSourceStubTemplates
> > - testSourceTemplates
> > - ...
> > So for each matched class, I could generage:
> > - resources into the target/generated-resources directory using the
> > resourceTemplates (could be more than one)
> > - testResources into the target/generates-test-resources directory using
> > the testResourceTemplates, ...
> > - source code into target/generated-sources ...
> > - test source code into target/generated-test-sources ...
> >
> > One speciality I liked with GraniteDS was the ability to have
> > auto-generated stub-classes generated in src/main/java ... if a class
> > allready existed, no code would be generated, but if a class didn't
> exist,
> > it would be generated. This was great for creating classes that extend
> > other generated classes and to allow customization. Something simple as
> > this:
> >
> > public class MyClass extends MyClassBase {
> > }
> >
> > And MyClassBase is generated to target/generated-sources.
> >
> > With such a plugin I could be able to generate my JPA MetaModel classes,
> > my DTOs, SQL scripts, ... and wouldn't have to configure thousands of
> > different generators. People could develop best-practice templates for
> > general purpose tasks.
> >
> > Hope this clarified, what I was looking for.
> >
> > If nothing similar exists, I would like to start developing something
> like
> > this, because I think it would make my life a lot easier.
> >
> > Chris
> >
> > ________________________________________
> > Von: Stadelmann Josef [josef.stadelmann@axa-winterthur.ch]
> > Gesendet: Donnerstag, 28. Februar 2013 09:52
> > An: Maven Users List
> > Betreff: AW: Is there any generic Maven code generator?
> >
> > A code generator needs input. Hence some "generic formal language" is
> used
> > to specify the input to the genric code generator? UML? Visualization of
> a
> > generic language could mean - speak UML, UML is a reality today. UML
> > modells can says much more then 1000 words? Hence I opt for better
> > integration of modelling tools with maven. Also roundtrip engineering is
> a
> > must. Enterprise Architect (EA) is able to generate code from UML and
> other
> > diagrams for many target compiler and it helps you to have code, modell
> and
> > documentation in sync. And EA can be feed with code and generates your
> > diagramms. A task which only ends when the modells become to complex.
> Maven
> > is much about geting and nailing dependent components together. If maven
> > finds the dependecies, a tool like EA could use input to draw i.e. the
> > component diagram, maybe a maven plugin can pave the way for EA. Other
> > whise, in my mind, there are far too many tools around and I get to often
> > the feeling that each time a problem developes, folk starts to seek a
> tool
> > to avoid some brain work. So if one knows in which aspects maven poms
> could
> > be used toward EA to get ceratin artiacs visualized for better
> > understanding, that would be almost a very good step into proper
> direction.
> > Josef
> >
> >
> > -----Ursprüngliche Nachricht-----
> > Von: christofer.dutz@c-ware.de [mailto:christofer.dutz@c-ware.de]
> > Gesendet: Mittwoch, 27. Februar 2013 12:31
> > An: users@maven.apache.org
> > Betreff: Is there any generic Maven code generator?
> >
> > I just posted this to Stackoverflow, but after posting I realized, that I
> > should have come here first :-(
> >
> >
> > I am currently working on a project, that makes intense usage of code
> > generation for various purposes. One generator generates SQL scripts from
> > jpa entities. Another generates DTOs from pojos, another generates the
> > JPA2.0 meta model, jet another generates some xml and schema files based
> on
> > Java classes ... each generator works completely different needs to be
> > configured differently.
> >
> > My question now is ... is there any generic maven code generator plugin
> > out there with the following attributes:
> >
> > *
> > Creates a pojo model of a Java class (Names, Properties, Annotation,
> > Methods ...)
> > *
> > Uses templates for defining the output that uses the pojo model to
> > generate any output.
> > *
> > Allows me to specify multiple templates for one class
> > *
> > Allows me to generate code and resources
> > *
> > Allows me to generate a base class to target/generated-sources and a
> dummy
> > implementation to src/main/java which simply extends the base class (If
> the
> > dummy class in src/main/java exists, nothing happens, if it doesn't it
> > generates such a dummy class. This code is checked in to the SCM and
> allows
> > extending the generated classes manually)
> >
> > I am using the Flexmojos GraniteDS plugin for generating my ActionScript
> > model code, but it's pretty specialized for that particular purpose.
> >
> > I think such a generic generator would make things a lot easier ... is
> > there something like that available out there, or do I have to start
> > implementing it myself?
> >
> > Chris
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > For additional commands, e-mail: users-help@maven.apache.org
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > For additional commands, e-mail: users-help@maven.apache.org
> >
> >
>
Re: Is there any generic Maven code generator?
Posted by Anders Hammar <an...@hammar.net>.
I haven't seen any generator plugin that does what you're looking for.
Wearing a Maven hat, I don't think that having these stub classes generated
to src/main/java belongs to the build lifecycle. It's a separate process
that should be executed outside of a Maven build. SO you would then have a
separate goal for that is not bound to a phase by default.
/Anders
On Thu, Feb 28, 2013 at 10:57 AM, christofer.dutz@c-ware.de <
christofer.dutz@c-ware.de> wrote:
> Ahem ... this wasn't quite the path I was indenting to go with my question.
>
> What I am looking for is a generator-plugin that uses a template engine
> (such as Velocity) to generate code, and uses as input an pojo-object model
> representing the details of a Java class that it should generate code for.
>
> Now I would like to have (or create, if I have to) a plugin, that allows
> me to specify which classes I am addressing using some include/exclude
> config.
>
> I could configure different include/exclude groups, each one in one
> execution and for each I could provide a set of:
> - resourceTemplates
> - testResourceTemplates
> - sourceStubTemplates
> - sourceTemplates
> - testSourceStubTemplates
> - testSourceTemplates
> - ...
> So for each matched class, I could generage:
> - resources into the target/generated-resources directory using the
> resourceTemplates (could be more than one)
> - testResources into the target/generates-test-resources directory using
> the testResourceTemplates, ...
> - source code into target/generated-sources ...
> - test source code into target/generated-test-sources ...
>
> One speciality I liked with GraniteDS was the ability to have
> auto-generated stub-classes generated in src/main/java ... if a class
> allready existed, no code would be generated, but if a class didn't exist,
> it would be generated. This was great for creating classes that extend
> other generated classes and to allow customization. Something simple as
> this:
>
> public class MyClass extends MyClassBase {
> }
>
> And MyClassBase is generated to target/generated-sources.
>
> With such a plugin I could be able to generate my JPA MetaModel classes,
> my DTOs, SQL scripts, ... and wouldn't have to configure thousands of
> different generators. People could develop best-practice templates for
> general purpose tasks.
>
> Hope this clarified, what I was looking for.
>
> If nothing similar exists, I would like to start developing something like
> this, because I think it would make my life a lot easier.
>
> Chris
>
> ________________________________________
> Von: Stadelmann Josef [josef.stadelmann@axa-winterthur.ch]
> Gesendet: Donnerstag, 28. Februar 2013 09:52
> An: Maven Users List
> Betreff: AW: Is there any generic Maven code generator?
>
> A code generator needs input. Hence some "generic formal language" is used
> to specify the input to the genric code generator? UML? Visualization of a
> generic language could mean - speak UML, UML is a reality today. UML
> modells can says much more then 1000 words? Hence I opt for better
> integration of modelling tools with maven. Also roundtrip engineering is a
> must. Enterprise Architect (EA) is able to generate code from UML and other
> diagrams for many target compiler and it helps you to have code, modell and
> documentation in sync. And EA can be feed with code and generates your
> diagramms. A task which only ends when the modells become to complex. Maven
> is much about geting and nailing dependent components together. If maven
> finds the dependecies, a tool like EA could use input to draw i.e. the
> component diagram, maybe a maven plugin can pave the way for EA. Other
> whise, in my mind, there are far too many tools around and I get to often
> the feeling that each time a problem developes, folk starts to seek a tool
> to avoid some brain work. So if one knows in which aspects maven poms could
> be used toward EA to get ceratin artiacs visualized for better
> understanding, that would be almost a very good step into proper direction.
> Josef
>
>
> -----Ursprüngliche Nachricht-----
> Von: christofer.dutz@c-ware.de [mailto:christofer.dutz@c-ware.de]
> Gesendet: Mittwoch, 27. Februar 2013 12:31
> An: users@maven.apache.org
> Betreff: Is there any generic Maven code generator?
>
> I just posted this to Stackoverflow, but after posting I realized, that I
> should have come here first :-(
>
>
> I am currently working on a project, that makes intense usage of code
> generation for various purposes. One generator generates SQL scripts from
> jpa entities. Another generates DTOs from pojos, another generates the
> JPA2.0 meta model, jet another generates some xml and schema files based on
> Java classes ... each generator works completely different needs to be
> configured differently.
>
> My question now is ... is there any generic maven code generator plugin
> out there with the following attributes:
>
> *
> Creates a pojo model of a Java class (Names, Properties, Annotation,
> Methods ...)
> *
> Uses templates for defining the output that uses the pojo model to
> generate any output.
> *
> Allows me to specify multiple templates for one class
> *
> Allows me to generate code and resources
> *
> Allows me to generate a base class to target/generated-sources and a dummy
> implementation to src/main/java which simply extends the base class (If the
> dummy class in src/main/java exists, nothing happens, if it doesn't it
> generates such a dummy class. This code is checked in to the SCM and allows
> extending the generated classes manually)
>
> I am using the Flexmojos GraniteDS plugin for generating my ActionScript
> model code, but it's pretty specialized for that particular purpose.
>
> I think such a generic generator would make things a lot easier ... is
> there something like that available out there, or do I have to start
> implementing it myself?
>
> Chris
>
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> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
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AW: Is there any generic Maven code generator?
Posted by "christofer.dutz@c-ware.de" <ch...@c-ware.de>.
Ahem ... this wasn't quite the path I was indenting to go with my question.
What I am looking for is a generator-plugin that uses a template engine (such as Velocity) to generate code, and uses as input an pojo-object model representing the details of a Java class that it should generate code for.
Now I would like to have (or create, if I have to) a plugin, that allows me to specify which classes I am addressing using some include/exclude config.
I could configure different include/exclude groups, each one in one execution and for each I could provide a set of:
- resourceTemplates
- testResourceTemplates
- sourceStubTemplates
- sourceTemplates
- testSourceStubTemplates
- testSourceTemplates
- ...
So for each matched class, I could generage:
- resources into the target/generated-resources directory using the resourceTemplates (could be more than one)
- testResources into the target/generates-test-resources directory using the testResourceTemplates, ...
- source code into target/generated-sources ...
- test source code into target/generated-test-sources ...
One speciality I liked with GraniteDS was the ability to have auto-generated stub-classes generated in src/main/java ... if a class allready existed, no code would be generated, but if a class didn't exist, it would be generated. This was great for creating classes that extend other generated classes and to allow customization. Something simple as this:
public class MyClass extends MyClassBase {
}
And MyClassBase is generated to target/generated-sources.
With such a plugin I could be able to generate my JPA MetaModel classes, my DTOs, SQL scripts, ... and wouldn't have to configure thousands of different generators. People could develop best-practice templates for general purpose tasks.
Hope this clarified, what I was looking for.
If nothing similar exists, I would like to start developing something like this, because I think it would make my life a lot easier.
Chris
________________________________________
Von: Stadelmann Josef [josef.stadelmann@axa-winterthur.ch]
Gesendet: Donnerstag, 28. Februar 2013 09:52
An: Maven Users List
Betreff: AW: Is there any generic Maven code generator?
A code generator needs input. Hence some "generic formal language" is used to specify the input to the genric code generator? UML? Visualization of a generic language could mean - speak UML, UML is a reality today. UML modells can says much more then 1000 words? Hence I opt for better integration of modelling tools with maven. Also roundtrip engineering is a must. Enterprise Architect (EA) is able to generate code from UML and other diagrams for many target compiler and it helps you to have code, modell and documentation in sync. And EA can be feed with code and generates your diagramms. A task which only ends when the modells become to complex. Maven is much about geting and nailing dependent components together. If maven finds the dependecies, a tool like EA could use input to draw i.e. the component diagram, maybe a maven plugin can pave the way for EA. Other whise, in my mind, there are far too many tools around and I get to often the feeling that each time a problem developes, folk starts to seek a tool to avoid some brain work. So if one knows in which aspects maven poms could be used toward EA to get ceratin artiacs visualized for better understanding, that would be almost a very good step into proper direction. Josef
-----Ursprüngliche Nachricht-----
Von: christofer.dutz@c-ware.de [mailto:christofer.dutz@c-ware.de]
Gesendet: Mittwoch, 27. Februar 2013 12:31
An: users@maven.apache.org
Betreff: Is there any generic Maven code generator?
I just posted this to Stackoverflow, but after posting I realized, that I should have come here first :-(
I am currently working on a project, that makes intense usage of code generation for various purposes. One generator generates SQL scripts from jpa entities. Another generates DTOs from pojos, another generates the JPA2.0 meta model, jet another generates some xml and schema files based on Java classes ... each generator works completely different needs to be configured differently.
My question now is ... is there any generic maven code generator plugin out there with the following attributes:
*
Creates a pojo model of a Java class (Names, Properties, Annotation, Methods ...)
*
Uses templates for defining the output that uses the pojo model to generate any output.
*
Allows me to specify multiple templates for one class
*
Allows me to generate code and resources
*
Allows me to generate a base class to target/generated-sources and a dummy implementation to src/main/java which simply extends the base class (If the dummy class in src/main/java exists, nothing happens, if it doesn't it generates such a dummy class. This code is checked in to the SCM and allows extending the generated classes manually)
I am using the Flexmojos GraniteDS plugin for generating my ActionScript model code, but it's pretty specialized for that particular purpose.
I think such a generic generator would make things a lot easier ... is there something like that available out there, or do I have to start implementing it myself?
Chris
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AW: Is there any generic Maven code generator?
Posted by Stadelmann Josef <jo...@axa-winterthur.ch>.
A code generator needs input. Hence some "generic formal language" is used to specify the input to the genric code generator? UML? Visualization of a generic language could mean - speak UML, UML is a reality today. UML modells can says much more then 1000 words? Hence I opt for better integration of modelling tools with maven. Also roundtrip engineering is a must. Enterprise Architect (EA) is able to generate code from UML and other diagrams for many target compiler and it helps you to have code, modell and documentation in sync. And EA can be feed with code and generates your diagramms. A task which only ends when the modells become to complex. Maven is much about geting and nailing dependent components together. If maven finds the dependecies, a tool like EA could use input to draw i.e. the component diagram, maybe a maven plugin can pave the way for EA. Other whise, in my mind, there are far too many tools around and I get to often the feeling that each time a problem developes, folk starts to seek a tool to avoid some brain work. So if one knows in which aspects maven poms could be used toward EA to get ceratin artiacs visualized for better understanding, that would be almost a very good step into proper direction. Josef
-----Ursprüngliche Nachricht-----
Von: christofer.dutz@c-ware.de [mailto:christofer.dutz@c-ware.de]
Gesendet: Mittwoch, 27. Februar 2013 12:31
An: users@maven.apache.org
Betreff: Is there any generic Maven code generator?
I just posted this to Stackoverflow, but after posting I realized, that I should have come here first :-(
I am currently working on a project, that makes intense usage of code generation for various purposes. One generator generates SQL scripts from jpa entities. Another generates DTOs from pojos, another generates the JPA2.0 meta model, jet another generates some xml and schema files based on Java classes ... each generator works completely different needs to be configured differently.
My question now is ... is there any generic maven code generator plugin out there with the following attributes:
*
Creates a pojo model of a Java class (Names, Properties, Annotation, Methods ...)
*
Uses templates for defining the output that uses the pojo model to generate any output.
*
Allows me to specify multiple templates for one class
*
Allows me to generate code and resources
*
Allows me to generate a base class to target/generated-sources and a dummy implementation to src/main/java which simply extends the base class (If the dummy class in src/main/java exists, nothing happens, if it doesn't it generates such a dummy class. This code is checked in to the SCM and allows extending the generated classes manually)
I am using the Flexmojos GraniteDS plugin for generating my ActionScript model code, but it's pretty specialized for that particular purpose.
I think such a generic generator would make things a lot easier ... is there something like that available out there, or do I have to start implementing it myself?
Chris
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Re: Is there any generic Maven code generator?
Posted by Jeff MAURY <je...@jeffmaury.com>.
First, the way to plug extra functionnality into Maven is to write a Maven
plugin so I don't think you can find a Maven plugin to be generic enough to
perform any kind of task.
For you purpose, you can try a Java annotation processor which are
supported by the Maven compiler plugin or a combination of the Maven exec
plugin (to launch your own generator) and the Maven build helper plugin (to
let Maven know that new files have been generated)
Regards
Jeff
On Wed, Feb 27, 2013 at 12:30 PM, christofer.dutz@c-ware.de <
christofer.dutz@c-ware.de> wrote:
> I just posted this to Stackoverflow, but after posting I realized, that I
> should have come here first :-(
>
>
> I am currently working on a project, that makes intense usage of code
> generation for various purposes. One generator generates SQL scripts from
> jpa entities. Another generates DTOs from pojos, another generates the
> JPA2.0 meta model, jet another generates some xml and schema files based on
> Java classes ... each generator works completely different needs to be
> configured differently.
>
> My question now is ... is there any generic maven code generator plugin
> out there with the following attributes:
>
> *
> Creates a pojo model of a Java class (Names, Properties, Annotation,
> Methods ...)
> *
> Uses templates for defining the output that uses the pojo model to
> generate any output.
> *
> Allows me to specify multiple templates for one class
> *
> Allows me to generate code and resources
> *
> Allows me to generate a base class to target/generated-sources and a dummy
> implementation to src/main/java which simply extends the base class (If the
> dummy class in src/main/java exists, nothing happens, if it doesn't it
> generates such a dummy class. This code is checked in to the SCM and allows
> extending the generated classes manually)
>
> I am using the Flexmojos GraniteDS plugin for generating my ActionScript
> model code, but it's pretty specialized for that particular purpose.
>
> I think such a generic generator would make things a lot easier ... is
> there something like that available out there, or do I have to start
> implementing it myself?
>
> Chris
>
--
Jeff MAURY
"Legacy code" often differs from its suggested alternative by actually
working and scaling.
- Bjarne Stroustrup
http://www.jeffmaury.com
http://riadiscuss.jeffmaury.com
http://www.twitter.com/jeffmaury