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Subject: AW: How do I create a customized build?
Date: Fri, 20 Mar 2015 08:31:05 +0100
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I would provide several jars:
- application-core.jar: contains the application and the interfaces
- application-activemq.jar: contains the interface implementations for
ActiveMQ
- application-hornetq.jar ...


The approach you'll try to achieve (as I understand that) is having a =
"full
jar" for each impl
- application-activemq.jar: all for ActiveMQ
- application-hornetq.jar: all f=FCr HornetQ...


Both strategies would work with pattern.
Something like
  <jar destfile=3D"application-core.jar" >=20
    <fileset ... excludes=3D"**/transportX/,**/transportY/...... />
  <jar destfile=3D"application-${transport-strategy}.jar >=20
    <fileset ... includes=3D"**/${transport-strategy}/" />
or
  <jar destfile=3D"application-${transport-strategy}.jar >=20
    <fileset ... excludes=3D"**/transportX/,**/transportY/...... />
    <fileset ... includes=3D"**/${transport-strategy}/" />


Some more ideas for improvements:
- define a <macrodef> for creating the transport-jars
- if you want to build only for the 'current' transport system, use
<available> for setting the ${transport-strategy}


Jan



> -----Urspr=FCngliche Nachricht-----
> Von: Gagnon, Joseph - 0558 - MITLL [mailto:Joseph.Gagnon@ll.mit.edu]
> Gesendet: Donnerstag, 19. M=E4rz 2015 19:45
> An: user@ant.apache.org
> Betreff: How do I create a customized build?
>=20
> First let me preface this question by stating that I'm very much an =
Ant
> newbie.
>=20
> I have a Java application that was designed to provide the ability to
> "plug
>  in" a message transport mechanism (e.g. ActiveMQ) for a given client
> installation.  The code defines interfaces for the transport and then
> there
> are a number of implementations that conform to the interfaces,
> providing
> concrete implementations of the transports we support.  The idea is
> that a
> given client will indicate the transport they want/need to use and we
> will
> provide them with a build that includes only the classes for the =
chosen
> implementation. No other transport implementations should be included.
> The
> reasons for this are to keep code size down and for 3rd party =
licensing
> issues.
>=20
> How do you set up an Ant build file to customize the jar file produced
> so that
> it only includes a subset of the transport implementations?  Obviously
> I need
> to somehow get the transport selection into the build file so that it
> has the
> info it needs.  From what I've read, you have to use properties to get
> input
> arguments into the script.  Beyond that, I am at a loss as to what to
> do next.
>=20
> I'll provide a brief package hierarchy to illustrate what is located
> where.
> If it makes sense to restructure this in some way, please let me know.
>=20
> <base package>.impl
> 	config
> 		TransportConfig.java	<- Used to unmarshal a file used to
> configure the
> transport
> 	transport
> 		impl				<- Where the supported
transport
> implementations live
> 			dds.rti
> 			jms.activemq
> 			udp
> 			<transportX>
> 		<other packages and classes>
> 	<other packages and classes>
> <base package>.service
> 	TransportFactoryLoader.java	<- Uses a ServiceLoader to load a
> transport
> factory
> 						   (currently set up in
build file)
> <base package>.transport		<- Contains the interfaces the
> transports must
> implement
> 	<transport interfaces>
>=20
> So, as an example, client A will be using ActiveMQ. We want to run the
> build
> so that only the <base package>.impl.transport.impl.jms.activemq
> classes are
> included, but nothing from the rti.dds, udp, etc. packages are
> included. I've
> tried to find information in this area, but have found nothing helps.
>=20
> I am open to any suggestions and ideas about how to go about this.
>=20
> Thanks,
> Joe Gagnon
>=20
> Engineer II
> Group 58 - Cyber Systems & Technology
> MIT Lincoln Laboratory
> Lexington, MA



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