Custom type converter for Mojo configuration?

Question

I need to use custom type, e.g., LunarDate, in my Mojo object:

class MyMojo extends AbstractMojo {

    /** @parameter */
    LunarDate lunarDate;

         


        

Answer 1

I was able to solve this by defining a ConfigurationConverter (my target type is a AnyLicenseInfo):

@NoArgsConstructor @ToString
public class LicenseConverter extends AbstractBasicConverter {
    private static final Class TYPE = AnyLicenseInfo.class;

    @Override
    public boolean canConvert(Class type) { return type.equals(TYPE); }

    @Override
    public Object fromString(String string) throws ComponentConfigurationException {
        Object object = null;

        try {
            object =
                TYPE.cast(LicenseInfoFactory.parseSPDXLicenseString(string));
        } catch (Exception exception) {
            String message =
                "Unable to convert '" + string + "' to " + TYPE.getName();

            throw new ComponentConfigurationException(message, exception);
        }

        return object;
    }
}

Registering it with a custom ComponentConfigurator:

@Named("license-mojo-component-configurator")
@NoArgsConstructor @ToString @Slf4j
public class LicenseMojoComponentConfigurator extends BasicComponentConfigurator {
    @PostConstruct
    public void init() {
        converterLookup.registerConverter(new LicenseConverter());
    }

    @PreDestroy
    public void destroy() { }
}

And then specifying the configurator in the @Mogo annotation:

@Mojo(name = "generate-license-resources",
      configurator = "license-mojo-component-configurator",
      requiresDependencyResolution = TEST,
      defaultPhase = GENERATE_RESOURCES, requiresProject = true)
@NoArgsConstructor @ToString @Slf4j
public class GenerateLicenseResourcesMojo extends AbstractLicenseMojo {