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Olivier Cailloux edited comment on ODFTOOLKIT-464 at 8/31/17 10:11 AM:
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An official explanation about SLF4J bindings is
[here|https://www.slf4j.org/codes.html#multiple_bindings]: “Embedded components
such as libraries or frameworks should not declare a dependency on any SLF4J
binding but only depend on slf4j-api. When a library declares a compile-time
dependency on a SLF4J binding, it imposes that binding on the end-user, thus
negating SLF4J's purpose. When you come across an embedded component declaring
a compile-time dependency on any SLF4J binding, please take the time to contact
the authors of said component/library and kindly ask them to mend their ways.”
was (Author: oliviercailloux):
An official explanation about SLF4J bindings is
[here|https://www.slf4j.org/codes.html#StaticLoggerBinder] and
[here|https://www.slf4j.org/codes.html#multiple_bindings].
> Pom does not follow best practices: missing optional keyword
> ------------------------------------------------------------
>
> Key: ODFTOOLKIT-464
> URL: https://issues.apache.org/jira/browse/ODFTOOLKIT-464
> Project: ODF Toolkit
> Issue Type: Bug
> Components: simple api
> Reporter: Olivier Cailloux
> Priority: Minor
>
> When depending on Apache ODFToolkit simple-odf in my application
> (org.apache.odftoolkit:simple-odf:0.8.2-incubating), I observe that
> com.sun:tools is transitively imposed on my project as a dependency (coming
> from taglets, see its
> [POM|https://repo1.maven.org/maven2/org/apache/odftoolkit/taglets/0.8.11-incubating/taglets-0.8.11-incubating.pom]).
> Similarly, org.slf4j:slf4j-log4j12 is passed to my project as a dependency.
> I suspect these dependencies are actually not required for projects depending
> on simple-odf.
> It is possible and simple to ease the life of users of simple-odf by adding
> <optional> in the relevant pom files. This would respect Maven best
> practices. (See for example
> [SO|https://stackoverflow.com/questions/32231814/how-can-i-remove-logback-from-a-librarys-dependency-while-keeping-slf4j].)
> Workaround: add exclusion rules for these artifacts (see this example
> [POM|https://github.com/oliviercailloux/Test-ODFToolkit-ODS/blob/master/pom.xml]).
> (I tried to discuss it
> [here|https://lists.apache.org/thread.html/6fa4257e67ede90bac58f5518e1be41e7561a451149cbc9eecdbbf1e@%3Codf-users.incubator.apache.org%3E]
> but received no answer.)
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