Hello Rob,
you could try to use different configurations for that purpose. The
patches are downloaded in one configuration, and your enhancements are
downloaded in another configuration. Retrieve each configuration to a
separate directory and build the classpath by scanning the directories
in the correct order.
Your ivy.xml would look something like this:
<configurations>
<configuration name="patches" description="contains vendor patches"/>
<configuration name="enhancements" description="contains own
enhancements"/>
[...]
</configurations>
<dependencies>
<dependency org="vendor1" name="patches" conf="patches->@" />
<dependency org="myco" name="myenhancements" conf="enhancements->@" />
<dependency org="vendor1" name="core-app"
conf="*,!patches,!enhancements->@" />
<dependencies>
The easiest setupt would be to retrieve each configuration into a
separate directory. Then you can build your classpath by simply using
all files in the folders:
<path id="myClasspath">
<fileset dir="lib/patches" includes="*"/>
<fileset dir="lib/enhancements" include="*"/>
<fileset dir="lib/default" include="*"/>
</path>
As an alternative, you could use the ivy:cachpath task. It allows you to
build a path of all artifacts in a configuration.
Thomas
rob08 wrote:
Geoff Clitheroe-2 wrote:
Hi Rob,
I'm not sure that the shadowing is easy to deal with in pure Ivy
(unless the vendor is providing Ivy files with nice configs or you
write your own). You could look at latest strategies and conflict
resolution
http://ant.apache.org/ivy/history/2.1.0-rc1/settings/latest-strategies.html
http://ant.apache.org/ivy/history/2.1.0-rc1/settings/conflict-managers.html
But if there are no configs available for you to work from then it may
be simplest to deal with how you set up the classpath in ant with
different pathelements?
Cheers,
Geoff
Thanks Geoff,
I reviewed those links, but I don't think that's quite what I'm after...
Here as sample fragment of my ivy.xml:
<dependencies>
<dependency org="vendor1" name="patches"
rev="latest.integration"
conf="*->@"/>
<dependency org="myco" name="myenhancements"
rev="latest.integration"
conf="*->@"/>
<dependency org="vendor1" name="core-app"
rev="latest.integration"
conf="*->@"/>
</dependencies>
I find that for the classpath generated by the above, the order of jars is
random. I have 3 configurations and the CLASSPATH generated by Ivy for each
configuration is different.
I was hoping the CLASSPATH jars could be in the same order as the
dependencies, or perhaps a dependency attribute existed that allowed me to
specify some sort of classpath sort order or priority.
I realise that having an application depend on classpath order is a *bad
thing*, but surely it's not unheard of in the real world, is it? Anyway, in
this case it's out of my hands - vendor app.
Thanks,
