protected List getChangedSets()

in src/main/java/org/apache/maven/plugin/changelog/ChangeLogReport.java [517:586]
56 lines of code
12 McCabe index (conditional complexity)

    protected List<ChangeLogSet> getChangedSets()
        throws MavenReportException
    {
        List<ChangeLogSet> changelogList = null;

        if ( !outputXML.isAbsolute() )
        {
            outputXML = new File( project.getBasedir(), outputXML.getPath() );
        }

        if ( outputXML.exists() )
        {
            // CHECKSTYLE_OFF: MagicNumber
            if ( outputXMLExpiration > 0
                && outputXMLExpiration * 60000 > System.currentTimeMillis() - outputXML.lastModified() )
                // CHECKSTYLE_ON: MagicNumber
            {
                try
                {
                    //ReaderFactory.newReader( outputXML, getOutputEncoding() );
                    //FileInputStream fIn = new FileInputStream( outputXML );

                    getLog().info( "Using existing changelog.xml..." );

                    changelogList =
                        ChangeLog.loadChangedSets( ReaderFactory.newReader( outputXML, getOutputEncoding() ) );
                }
                catch ( FileNotFoundException e )
                {
                    //do nothing, just regenerate
                }
                catch ( Exception e )
                {
                    throw new MavenReportException( "An error occurred while parsing " + outputXML.getAbsolutePath(),
                                                    e );
                }
            }
        }

        if ( changelogList == null )
        {
            if ( offline )
            {
                throw new MavenReportException( "This report requires online mode." );
            }

            getLog().info( "Generating changed sets xml to: " + outputXML.getAbsolutePath() );

            changelogList = generateChangeSetsFromSCM();

            try
            {
                writeChangelogXml( changelogList );
            }
            catch ( FileNotFoundException e )
            {
                throw new MavenReportException( "Can't create " + outputXML.getAbsolutePath(), e );
            }
            catch ( UnsupportedEncodingException e )
            {
                throw new MavenReportException( "Can't create " + outputXML.getAbsolutePath(), e );
            }
            catch ( IOException e )
            {
                throw new MavenReportException( "Can't create " + outputXML.getAbsolutePath(), e );
            }
        }

        return changelogList;
    }