Parsing pom.xml

[Andres Almiray]

Hello everyone,

I have the need of building a model based on the data defined in a pom.xml
file.
What would be the best way to read, parse, and obtain such model using
standard Maven APIs?

Best,
Andres

-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

[Enrico Olivelli]

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a pom.xml
file.
What would be the best way to read, parse, and obtain such model using
standard Maven APIs?

Could you given some more context?

I guess you are not writing a plugin.

Using the internal API may be useful depending on your case.

Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

[Andres Almiray]

Of course.

This is definitely not a plugin project. My goal is to have an in-memory
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns and
recommend some others.

Best,
Andres

-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model using
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary,

and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

[Robert Scholte]

The ModelBuilder[1] is what you are looking for, and yes it does a LOT :)

Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.

Robert

[1] https://maven.apache.org/ref/3.6.0/maven-model-builder/

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an in-memory
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns and
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model using
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-***@maven.apache.org
For additional commands, e-mail: dev-***@maven.apache.org

[Andres Almiray]

Thank you Robert!

It looks like org.apache.maven.model.Model.DefaultModelBuilder provides the
behavior I need given this method found in its contract

ModelBuildingResult build( ModelBuildingRequest request )
throws ModelBuildingException;

ModelBuildingResult gives me access to the raw model (as read form the
pom.xml file) and the effective model. This is exactly what I need :-)

Is there a special way to initialize an instance of such type?
Theoretically I'd like to call something like

ModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setPomFile(...);
ModelBuilder builder = ... // instantiate builder (??)
ModelBuldingResult result = builder.build(request);

Thanks for your help.

Best,
Andres

-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
The ModelBuilder[1] is what you are looking for, and yes it does a LOT :)
Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.
Robert
[1] https://maven.apache.org/ref/3.6.0/maven-model-builder/

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an in-memory
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns and
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model using
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------

[Oliver Drotbohm]

If it's about pure XML parsing and tweaking the information and building the model is not required, XmlBeam [0] is a lightweight alternative to map the entire file to a Java object. We use that in the Spring Data release automation. Declare an interface containing accessors backed by XPath expressions, use the API to create instances and read and write data from and to the XML file.

Here [1] is the interface we use to access the parts of the POM relevant to our use case.

Cheers,
Ollie

[0] https://xmlbeam.org/
[1] https://github.com/spring-projects/spring-data-dev-tools/blob/82252be5d7c11a137a68c7fe985b53e04d91cb18/release-tools/src/main/java/org/springframework/data/release/build/Pom.java

Post by Andres Almiray
Thank you Robert!
It looks like org.apache.maven.model.Model.DefaultModelBuilder provides the
behavior I need given this method found in its contract
ModelBuildingResult build( ModelBuildingRequest request )
throws ModelBuildingException;
ModelBuildingResult gives me access to the raw model (as read form the
pom.xml file) and the effective model. This is exactly what I need :-)
Is there a special way to initialize an instance of such type?
Theoretically I'd like to call something like
ModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setPomFile(...);
ModelBuilder builder = ... // instantiate builder (??)
ModelBuldingResult result = builder.build(request);
Thanks for your help.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
https://urldefense.proofpoint.com/v2/url?u=http-3A__andresalmiray.com&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=pWrsdUJpQnH-DJXIDk-VNgy7wfo1-h6nGxVaeazNdJI&e=
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_aalmiray&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=UGKJpSnO9O4VH5cvMfn7ZTk5m9sFXqHsplwnlS1nbpk&e=
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
The ModelBuilder[1] is what you are looking for, and yes it does a LOT :)
Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.
Robert
[1] https://urldefense.proofpoint.com/v2/url?u=https-3A__maven.apache.org_ref_3.6.0_maven-2Dmodel-2Dbuilder_&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=nOkaCJH3dSvCiihbxfBQKXKE-I2GunCrdaIK9gjbVJs&e=

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an in-memory
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns and
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
https://urldefense.proofpoint.com/v2/url?u=http-3A__andresalmiray.com&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=pWrsdUJpQnH-DJXIDk-VNgy7wfo1-h6nGxVaeazNdJI&e=
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_aalmiray&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=UGKJpSnO9O4VH5cvMfn7ZTk5m9sFXqHsplwnlS1nbpk&e=
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model using
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
https://urldefense.proofpoint.com/v2/url?u=http-3A__andresalmiray.com&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=pWrsdUJpQnH-DJXIDk-VNgy7wfo1-h6nGxVaeazNdJI&e=
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_aalmiray&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=UGKJpSnO9O4VH5cvMfn7ZTk5m9sFXqHsplwnlS1nbpk&e=
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-***@maven.apache.org
For additional commands, e-mail: dev-***@maven.apache.org

[Andres Almiray]

HI Oliver,

Nice! However that approach may require mapping all possible elements,
including plugins and more. The ModelBuilder should take care of that,
isn't it?

Cheers,
Andres

-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Oliver Drotbohm
If it's about pure XML parsing and tweaking the information and building
the model is not required, XmlBeam [0] is a lightweight alternative to map
the entire file to a Java object. We use that in the Spring Data release
automation. Declare an interface containing accessors backed by XPath
expressions, use the API to create instances and read and write data from
and to the XML file.
Here [1] is the interface we use to access the parts of the POM relevant to our use case.
Cheers,
Ollie
[0] https://xmlbeam.org/
[1]
https://github.com/spring-projects/spring-data-dev-tools/blob/82252be5d7c11a137a68c7fe985b53e04d91cb18/release-tools/src/main/java/org/springframework/data/release/build/Pom.java

Post by Andres Almiray
Thank you Robert!
It looks like org.apache.maven.model.Model.DefaultModelBuilder provides

the

Post by Andres Almiray
behavior I need given this method found in its contract
ModelBuildingResult build( ModelBuildingRequest request )
throws ModelBuildingException;
ModelBuildingResult gives me access to the raw model (as read form the
pom.xml file) and the effective model. This is exactly what I need :-)
Is there a special way to initialize an instance of such type?
Theoretically I'd like to call something like
ModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setPomFile(...);
ModelBuilder builder = ... // instantiate builder (??)
ModelBuldingResult result = builder.build(request);
Thanks for your help.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat

https://urldefense.proofpoint.com/v2/url?u=http-3A__andresalmiray.com&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=pWrsdUJpQnH-DJXIDk-VNgy7wfo1-h6nGxVaeazNdJI&e=
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_aalmiray&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=UGKJpSnO9O4VH5cvMfn7ZTk5m9sFXqHsplwnlS1nbpk&e=

Post by Andres Almiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary,

and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
The ModelBuilder[1] is what you are looking for, and yes it does a LOT

:)

Post by Andres Almiray

Post by Robert Scholte
Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.
Robert
[1]

https://urldefense.proofpoint.com/v2/url?u=https-3A__maven.apache.org_ref_3.6.0_maven-2Dmodel-2Dbuilder_&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=nOkaCJH3dSvCiihbxfBQKXKE-I2GunCrdaIK9gjbVJs&e=

Post by Andres Almiray

Post by Robert Scholte

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an

in-memory

Post by Andres Almiray

Post by Robert Scholte

Post by Andres Almiray
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns and
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat

https://urldefense.proofpoint.com/v2/url?u=http-3A__andresalmiray.com&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=pWrsdUJpQnH-DJXIDk-VNgy7wfo1-h6nGxVaeazNdJI&e=
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_aalmiray&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=UGKJpSnO9O4VH5cvMfn7ZTk5m9sFXqHsplwnlS1nbpk&e=

Post by Andres Almiray

Post by Robert Scholte

Post by Andres Almiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model

using

Post by Andres Almiray

Post by Robert Scholte

Post by Andres Almiray

Post by Andres Almiray

Post by Andres Almiray
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat

https://urldefense.proofpoint.com/v2/url?u=http-3A__andresalmiray.com&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=pWrsdUJpQnH-DJXIDk-VNgy7wfo1-h6nGxVaeazNdJI&e=
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_aalmiray&d=DwIBaQ&c=lnl9vOaLMzsy2niBC8-h_K-7QJuNJEsFrzdndhuJ3Sw&r=7iLfhC17FN-CWhuzo2HX1g0LRD1P0huXh9Zkd3m6MZ0&m=IxYdo3ScIXOSlnfw8tbvEDuE1wDPwLfKRtL_lYOz0zs&s=UGKJpSnO9O4VH5cvMfn7ZTk5m9sFXqHsplwnlS1nbpk&e=

Post by Andres Almiray

Post by Robert Scholte

Post by Andres Almiray

Post by Andres Almiray

Post by Andres Almiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------

---------------------------------------------------------------------

[Andres Almiray]

Looks like I found the answer to instantiating the ModelBuilder

new DefaultModelBuilderFactory().newInstance()

From the javadoc:

* A factory to create model builder instances when no dependency injection
is available. <em>Note:</em> This class is
* only meant as a utility for developers that want to employ the model
builder outside of the Maven build system, Maven
* plugins should always acquire model builder instances via dependency
injection. Developers might want to subclass
* this factory to provide custom implementations for some of the
components used by the model builder.

Great, I think this will work :-)

Best,
Andres

-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray
Thank you Robert!
It looks like org.apache.maven.model.Model.DefaultModelBuilder provides
the behavior I need given this method found in its contract
ModelBuildingResult build( ModelBuildingRequest request )
throws ModelBuildingException;
ModelBuildingResult gives me access to the raw model (as read form the
pom.xml file) and the effective model. This is exactly what I need :-)
Is there a special way to initialize an instance of such type?
Theoretically I'd like to call something like
ModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setPomFile(...);
ModelBuilder builder = ... // instantiate builder (??)
ModelBuldingResult result = builder.build(request);
Thanks for your help.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary,
and those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
The ModelBuilder[1] is what you are looking for, and yes it does a LOT :)
Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.
Robert
[1] https://maven.apache.org/ref/3.6.0/maven-model-builder/

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an in-memory
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns and
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,

Post by Andres Almiray
and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model

using

Post by Andres Almiray

Post by Andres Almiray

Post by Andres Almiray
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------

[Robert Scholte]

Ah, you might be lucky with this solution :)

Post by Andres Almiray
Looks like I found the answer to instantiating the ModelBuilder
new DefaultModelBuilderFactory().newInstance()
* A factory to create model builder instances when no dependency injection
is available. <em>Note:</em> This class is
* only meant as a utility for developers that want to employ the model
builder outside of the Maven build system, Maven
* plugins should always acquire model builder instances via dependency
injection. Developers might want to subclass
* this factory to provide custom implementations for some of the
components used by the model builder.
Great, I think this will work :-)
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray
Thank you Robert!
It looks like org.apache.maven.model.Model.DefaultModelBuilder provides
the behavior I need given this method found in its contract
ModelBuildingResult build( ModelBuildingRequest request )
throws ModelBuildingException;
ModelBuildingResult gives me access to the raw model (as read form the
pom.xml file) and the effective model. This is exactly what I need :-)
Is there a special way to initialize an instance of such type?
Theoretically I'd like to call something like
ModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setPomFile(...);
ModelBuilder builder = ... // instantiate builder (??)
ModelBuldingResult result = builder.build(request);
Thanks for your help.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary,
and those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
The ModelBuilder[1] is what you are looking for, and yes it does a LOT :)
Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.
Robert
[1] https://maven.apache.org/ref/3.6.0/maven-model-builder/

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an

in-memory

Post by Andres Almiray
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns

and

Post by Andres Almiray
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,

Post by Andres Almiray
and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model

using

Post by Andres Almiray

Post by Andres Almiray

Post by Andres Almiray
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-***@maven.apache.org
For additional commands, e-mail: dev-***@maven.apache.org

[Andres Almiray]

So far so good, I can parse POM files and read data. This works fine as
long as I don't have to access a parent POM.

@Robert: I suspect your first suggestion may be needed in order to resolve
parent POM files as artifacts, isn't that right?

Best,
Andres

-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
Ah, you might be lucky with this solution :)

Post by Andres Almiray
Looks like I found the answer to instantiating the ModelBuilder
new DefaultModelBuilderFactory().newInstance()
* A factory to create model builder instances when no dependency injection
is available. <em>Note:</em> This class is
* only meant as a utility for developers that want to employ the model
builder outside of the Maven build system, Maven
* plugins should always acquire model builder instances via dependency
injection. Developers might want to subclass
* this factory to provide custom implementations for some of the
components used by the model builder.
Great, I think this will work :-)
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray
Thank you Robert!
It looks like org.apache.maven.model.Model.DefaultModelBuilder provides
the behavior I need given this method found in its contract
ModelBuildingResult build( ModelBuildingRequest request )
throws ModelBuildingException;
ModelBuildingResult gives me access to the raw model (as read form the
pom.xml file) and the effective model. This is exactly what I need :-)
Is there a special way to initialize an instance of such type?
Theoretically I'd like to call something like
ModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setPomFile(...);
ModelBuilder builder = ... // instantiate builder (??)
ModelBuldingResult result = builder.build(request);
Thanks for your help.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary,
and those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
The ModelBuilder[1] is what you are looking for, and yes it does a

LOT

Post by Andres Almiray

Post by Andres Almiray

Post by Robert Scholte
:)
Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.
Robert
[1] https://maven.apache.org/ref/3.6.0/maven-model-builder/

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an

in-memory

Post by Andres Almiray
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns

and

Post by Andres Almiray
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,

Post by Andres Almiray
and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model

using

Post by Andres Almiray

Post by Andres Almiray

Post by Andres Almiray
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------

---------------------------------------------------------------------

[Robert Scholte]

Post by Andres Almiray
So far so good, I can parse POM files and read data. This works fine as
long as I don't have to access a parent POM.
@Robert: I suspect your first suggestion may be needed in order to resolve
parent POM files as artifacts, isn't that right?

I don't know. I can always assume there's a CDI container, so that code
looks quite simple.
I never have to use the DefaultModelBuilderFactory, I actually wasn't
aware of this class.
I'm not sure everything works for standalone, but docs suggest it should.
If not, we'll need to have a closer look at it.

Robert

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
Ah, you might be lucky with this solution :)

Post by Andres Almiray
Looks like I found the answer to instantiating the ModelBuilder
new DefaultModelBuilderFactory().newInstance()
* A factory to create model builder instances when no dependency injection
is available. <em>Note:</em> This class is
* only meant as a utility for developers that want to employ the

model

Post by Andres Almiray
builder outside of the Maven build system, Maven
* plugins should always acquire model builder instances via

dependency

Post by Andres Almiray
injection. Developers might want to subclass
* this factory to provide custom implementations for some of the
components used by the model builder.
Great, I think this will work :-)
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,

Post by Andres Almiray
and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray
Thank you Robert!
It looks like org.apache.maven.model.Model.DefaultModelBuilder

provides

Post by Andres Almiray

Post by Andres Almiray
the behavior I need given this method found in its contract
ModelBuildingResult build( ModelBuildingRequest request )
throws ModelBuildingException;
ModelBuildingResult gives me access to the raw model (as read form

the

Post by Andres Almiray

Post by Andres Almiray
pom.xml file) and the effective model. This is exactly what I need

:-)

Post by Andres Almiray

Post by Andres Almiray
Is there a special way to initialize an instance of such type?
Theoretically I'd like to call something like
ModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setPomFile(...);
ModelBuilder builder = ... // instantiate builder (??)
ModelBuldingResult result = builder.build(request);
Thanks for your help.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,

Post by Andres Almiray

Post by Andres Almiray
and those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
The ModelBuilder[1] is what you are looking for, and yes it does a

LOT

Post by Andres Almiray

Post by Andres Almiray

Post by Robert Scholte
:)
Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.
Robert
[1] https://maven.apache.org/ref/3.6.0/maven-model-builder/
On Sat, 08 Dec 2018 18:20:51 +0100, Andres Almiray

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an

in-memory

Post by Andres Almiray
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns

and

Post by Andres Almiray
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,

Post by Andres Almiray
and
those who don't.
To understand recursion, we must first understand recursion.
On Sat, Dec 8, 2018 at 6:17 PM Enrico Olivelli

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined

in a

Post by Andres Almiray

Post by Andres Almiray

Post by Robert Scholte

Post by Andres Almiray

Post by Andres Almiray
pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such

model

Post by Andres Almiray

Post by Andres Almiray

Post by Robert Scholte
using

Post by Andres Almiray

Post by Andres Almiray

Post by Andres Almiray
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------
---------------------------------------------------------------------

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-***@maven.apache.org
For additional commands, e-mail: dev-***@maven.apache.org

[Laird Nelson]

This is all near and dear to my heart.

First, some terminology clearing up: the Maven internals rely on a JSR-330
implementation (javax.inject.*), not CDI (javax.enterprise.inject.*). CDI
is a JSR-330 implementation, but so is Guice, HK2, etc. I believe that the
internals of Maven rely on Guice, but as Robert says, if you're not
rebuilding the innards of Maven then using the facilities of JSR-330 make
the code really simple.

I did actually put parts of Maven in CDI (
https://microbean.github.io/microbean-maven-cdi/). You may find some of
the implementation classes in question that you need in there. Start here:
https://github.com/microbean/microbean-maven-cdi/blob/c5abd2e3c321020c419442c44ef726e48952d983/src/main/java/org/microbean/maven/cdi/MavenExtension.java#L317

Best,
Laird
--
https://about.me/lairdnelson

[Laird Nelson]

I forgot to mention: if you want to do this all "by hand", i.e. not rely on
JSR 330 containers, you want to look here (
https://maven.apache.org/resolver/apidocs/index.html?org/eclipse/aether/impl/DefaultServiceLocator.html)
and work backwards.

Best,
Laird
--
https://about.me/lairdnelson

Post by Laird Nelson
This is all near and dear to my heart.
First, some terminology clearing up: the Maven internals rely on a JSR-330
implementation (javax.inject.*), not CDI (javax.enterprise.inject.*). CDI
is a JSR-330 implementation, but so is Guice, HK2, etc. I believe that the
internals of Maven rely on Guice, but as Robert says, if you're not
rebuilding the innards of Maven then using the facilities of JSR-330 make
the code really simple.
I did actually put parts of Maven in CDI (
https://microbean.github.io/microbean-maven-cdi/). You may find some of
https://github.com/microbean/microbean-maven-cdi/blob/c5abd2e3c321020c419442c44ef726e48952d983/src/main/java/org/microbean/maven/cdi/MavenExtension.java#L317
Best,
Laird
--
https://about.me/lairdnelson

[Robert Scholte]

Hi Andres,

this is what you need to do:

@Inject
private ModelBuilder builder;

(or with @Requiment when using only plexus annotations)

This means you need your code to run in a CDI container. If you use
Sisu[1] you can mix Plexus and JSR330 annotations.

Maven & JSR-330[2] Should explain most details and get you started. It has
chapters for plugins and extensions, since these are the main areas where
to use it. Standalone should be possible. The Sisu page[1] is a good
start, and ensure to include org.eclipse.sisu.inject and
org.eclipse.sisu.plexus.
(I could point you to how Maven initializes the container, but it does
much, much more due to the need for isolated classloaders, etc.)

thanks
Robert

[1] https://www.eclipse.org/sisu/docs/tutorials/index.html
[2] https://maven.apache.org/maven-jsr330.html

Post by Andres Almiray
Thank you Robert!
It looks like org.apache.maven.model.Model.DefaultModelBuilder provides the
behavior I need given this method found in its contract
ModelBuildingResult build( ModelBuildingRequest request )
throws ModelBuildingException;
ModelBuildingResult gives me access to the raw model (as read form the
pom.xml file) and the effective model. This is exactly what I need :-)
Is there a special way to initialize an instance of such type?
Theoretically I'd like to call something like
ModelBuildingRequest request = new DefaultModelBuildingRequest();
request.setPomFile(...);
ModelBuilder builder = ... // instantiate builder (??)
ModelBuldingResult result = builder.build(request);
Thanks for your help.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and
those who don't.
To understand recursion, we must first understand recursion.

Post by Robert Scholte
The ModelBuilder[1] is what you are looking for, and yes it does a LOT :)
Be aware that it is using CDI, so to make use of it you'll need sisu/guice
too.
Robert
[1] https://maven.apache.org/ref/3.6.0/maven-model-builder/

Post by Andres Almiray
Of course.
This is definitely not a plugin project. My goal is to have an

in-memory

Post by Andres Almiray
representation of the POM as defined by a source pom.xml, to later
transform/enrich it and write it back.
As a side effect this tool can calculate statics on usage patterns and
recommend some others.
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,

Post by Andres Almiray
and
those who don't.
To understand recursion, we must first understand recursion.

Post by Andres Almiray

Post by Andres Almiray
Hello everyone,
I have the need of building a model based on the data defined in a

pom.xml

Post by Andres Almiray
file.
What would be the best way to read, parse, and obtain such model

using

Post by Andres Almiray

Post by Andres Almiray

Post by Andres Almiray
standard Maven APIs?

Could you given some more context?
I guess you are not writing a plugin.
Using the internal API may be useful depending on your case.
Enrico

Post by Andres Almiray
Best,
Andres
-------------------------------------------
Java Champion; Groovy Enthusiast
JCP EC Associate Seat
http://andresalmiray.com
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand

binary,
and

Post by Andres Almiray
those who don't.
To understand recursion, we must first understand recursion.

--
-- Enrico Olivelli

---------------------------------------------------------------------

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-***@maven.apache.org
For additional commands, e-mail: dev-***@maven.apache.org