Make mojos not fail if source directories do not exist
------------------------------------------------------
Key: MJAVACC-64
URL: http://jira.codehaus.org/browse/MJAVACC-64
Project: Maven 2.x JavaCC Plugin
Issue Type: Bug
Components: jjtree, jtb
Affects Versions: 2.3
Reporter: Benjamin Bentmann
Currently, some of the mojos fail the build if their source directories do not
exist:
{noformat}
[INFO] [javacc:jjtree]
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] basedir M:\maven\z\javacc\src\main\jjtree does not exist
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.IllegalStateException: basedir M:\maven\z\javacc\src\main\jjtree does
not exist
at
org.codehaus.plexus.util.DirectoryScanner.scan(DirectoryScanner.java:550)
at
org.codehaus.plexus.compiler.util.scan.AbstractSourceInclusionScanner.scanForSources(AbstractSourceInclusionScanner.java:78)
at
org.codehaus.plexus.compiler.util.scan.StaleSourceScanner.getIncludedSources(StaleSourceScanner.java:84)
at
org.codehaus.mojo.javacc.JJTreeMojo.computeStaleGrammars(JJTreeMojo.java:372)
at org.codehaus.mojo.javacc.JJTreeMojo.execute(JJTreeMojo.java:223)
{noformat}
This is inacceptable for a reactor build where the mojos are configured in the
parent project and inherited by all sub modules but some modules do not use
JavaCC/JJTree sources.
There need also be some new integration tests to check this.
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