public static String discoverJdkRequirement()

in maven-plugin-report-plugin/src/main/java/org/apache/maven/plugin/plugin/report/RequirementsHistory.java [116:157]

35 lines of code
11 McCabe index (conditional complexity)


    public static String discoverJdkRequirement(MavenProject project, PluginDescriptor pluginDescriptor) {
        String jdk = null;
        if (pluginDescriptor instanceof ExtendedPluginDescriptor) {
            ExtendedPluginDescriptor extPluginDescriptor = (ExtendedPluginDescriptor) pluginDescriptor;
            jdk = extPluginDescriptor.getRequiredJavaVersion();
        }
        if (jdk != null) {
            return jdk;
        }
        Plugin compiler = getCompilerPlugin(project.getBuild());
        if (compiler == null) {
            compiler = getCompilerPlugin(project.getPluginManagement());
        }

        jdk = getPluginParameter(compiler, "release");
        if (jdk == null) {
            jdk = project.getProperties().getProperty("maven.compiler.release");
        }

        if (jdk == null) {
            jdk = getPluginParameter(compiler, "target");
        }

        if (jdk == null) {
            // default value
            jdk = project.getProperties().getProperty("maven.compiler.target");
        }

        if (jdk == null) {
            String version = (compiler == null) ? null : compiler.getVersion();

            if (version != null) {
                return "Default target for maven-compiler-plugin version " + version;
            }
        } else {
            if (Arrays.asList("1.5", "1.6", "1.7", "1.8").contains(jdk)) {
                jdk = jdk.substring(2);
            }
        }

        return jdk;
    }