Added a precondition to skip execution by existence or absence of a file
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Key: MEXEC-78
URL: http://jira.codehaus.org/browse/MEXEC-78
Project: Maven 2.x Exec Plugin
Issue Type: Improvement
Components: exec
Affects Versions: 1.1.1
Environment: exec-maven-plugin version 1.1.1
Reporter: Maik Richey
Attachments: AddingPrecondition.diff
In our scenario one execution of the exec plugin can be called multiple times
for generating a specific file. As an enhancement to our build process I added
a precondition to skip execution by existence or absence of that file (see
configuration below). So if the file specified is missing and should exist _or_
is existing and should be missing execution will be skipped. Valid
preconditions are missing and exists (similar to activation of profiles).
{code:xml}
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
<configuration>
<executable>...</executable>
<precondition>
<file>
<exists>file1</exists>
AND/OR
<missing>file2</missing>
</file>
</precondition>
<arguments>
...
</arguments>
</configuration>
</plugin>
{code}
Give it a try and take it into the next release version if you like.
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