.springBeans definition throws NullPointer if BaseDir does not exist

This is related to the fix submitted for MECLIPSE-359
We have an application with 40 eclipse projects in it. About half of them have spring beans and 1/2 don't. The top level pom describes how the eclipse plugin should function and includes the Spring configuration component for the myeclipse target. A null pointer is thrown when running eclipse:myeclipse when the base dir doesn't exist, in our case in one of the projects that doesn't have any spring components. Our pom.xml fragment looks like

<spring>
<version>2.0</version>
<file-pattern>*.xml</file-pattern>
<basedir>src/main/resources/conf</basedir>
</spring>

The exception stack trace looks like

java.lang.NullPointerException
at org.apache.maven.plugin.eclipse.writers.myeclipse.MyEclipseSpringBeansWriter.getConfigurationFilesList(MyEclipseSpringBeansWriter.java:142)
at org.apache.maven.plugin.eclipse.writers.myeclipse.MyEclipseSpringBeansWriter.write(MyEclipseSpringBeansWriter.java:93)

The following code block with the problem throws NullPointer when directory.listFiles() returns a null into subdirs. Wrap the for() loop in a nullcheck

try
{
File directory = new File( basedir );

File[] subdirs = directory.listFiles( new FileFilter()
{
public boolean accept( File pathname )

{ return pathname.isDirectory(); }

} );

for ( int i = 0; i < subdirs.length; i++ )

{ configFiles.addAll( getConfigurationFilesList( subdirs[i].getPath(), pattern ) ); }

configFiles.addAll( FileUtils.getFileNames( directory, pattern, null, true ) );
}

Testing:

Take one of the test cases and remove the directory that is pointed to by the basedir attribute.