protected List getChangedSets()

in src/main/java/org/apache/maven/plugins/changelog/ChangeLogReport.java [481:523]
33 lines of code
10 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 * 60000L > System.currentTimeMillis() - outputXML.lastModified())
            // CHECKSTYLE_ON: MagicNumber
            {
                try {
                    getLog().info("Using existing changelog.xml...");
                    changelogList = ChangeLog.loadChangedSets(
                            new InputStreamReader(Files.newInputStream(outputXML.toPath()), 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 (IOException e) {
                throw new MavenReportException("Can't create " + outputXML.getAbsolutePath(), e);
            }
        }

        return changelogList;
    }