Beispiel #1
0
  /**
   * checks if an action is usable
   *
   * @param p_action action object
   * @return boolean usable flag
   */
  private static boolean actionusable(final IAction p_action) {
    if ((p_action.name() == null)
        || (p_action.name().isEmpty())
        || (p_action.name().get(0).trim().isEmpty())) {
      LOGGER.warning(CCommon.languagestring(CCommon.class, "actionnameempty"));
      return false;
    }

    if (!Character.isLetter(p_action.name().get(0).charAt(0))) {
      LOGGER.warning(CCommon.languagestring(CCommon.class, "actionletter", p_action));
      return false;
    }

    if (!Character.isLowerCase(p_action.name().get(0).charAt(0))) {
      LOGGER.warning(CCommon.languagestring(CCommon.class, "actionlowercase", p_action));
      return false;
    }

    if (p_action.minimalArgumentNumber() < 0) {
      LOGGER.warning(CCommon.languagestring(CCommon.class, "actionargumentsnumber", p_action));
      return false;
    }

    return true;
  }
Beispiel #2
0
  /**
   * returns actions by a class
   *
   * @note class must be an inheritance of the IAgent interface
   * @param p_class class list
   * @return action stream
   */
  @SuppressWarnings("unchecked")
  public static Stream<IAction> actionsFromAgentClass(final Class<?>... p_class) {
    return p_class == null || p_class.length == 0
        ? Stream.of()
        : Arrays.stream(p_class)
            .parallel()
            .filter(IAgent.class::isAssignableFrom)
            .flatMap(i -> CCommon.methods(i, i))
            .map(
                i -> {
                  try {
                    return (IAction) new CMethodAction(i);
                  } catch (final IllegalAccessException l_exception) {
                    LOGGER.warning(
                        CCommon.languagestring(CCommon.class, "actioninstantiate", i, l_exception));
                    return null;
                  }
                })

            // action can be instantiate
            .filter(Objects::nonNull)

            // check usable action name
            .filter(CCommon::actionusable);
  }
Beispiel #3
0
    /**
     * creates a compression stream
     *
     * @param p_datastream data-counting stream
     * @return compression output stream
     * @throws IOException throws on any io error
     */
    public final OutputStream get(final DataOutputStream p_datastream) throws IOException {
      switch (this) {
        case BZIP:
          return new BZip2CompressorOutputStream(p_datastream);

        case GZIP:
          return new GzipCompressorOutputStream(p_datastream);

        case DEFLATE:
          return new DeflateCompressorOutputStream(p_datastream);

        case PACK200:
          return new Pack200CompressorOutputStream(p_datastream);

        case XZ:
          return new XZCompressorOutputStream(p_datastream);

        default:
          throw new CIllegalStateException(CCommon.languagestring(this, "unknown", this));
      }
    }
Beispiel #4
0
  /**
   * get all classes within an Java package as action
   *
   * @param p_package full-qualified package name or empty for default package
   * @return action stream
   */
  @SuppressWarnings("unchecked")
  public static Stream<IAction> actionsFromPackage(final String... p_package) {
    return ((p_package == null) || (p_package.length == 0)
            ? Stream.of(MessageFormat.format("{0}.{1}", PACKAGEROOT, "action.buildin"))
            : Arrays.stream(p_package))
        .flatMap(
            j -> {
              try {
                return ClassPath.from(Thread.currentThread().getContextClassLoader())
                    .getTopLevelClassesRecursive(j)
                    .parallelStream()
                    .map(ClassPath.ClassInfo::load)
                    .filter(i -> !Modifier.isAbstract(i.getModifiers()))
                    .filter(i -> !Modifier.isInterface(i.getModifiers()))
                    .filter(i -> Modifier.isPublic(i.getModifiers()))
                    .filter(IAction.class::isAssignableFrom)
                    .map(
                        i -> {
                          try {
                            return (IAction) i.newInstance();
                          } catch (final IllegalAccessException
                              | InstantiationException l_exception) {
                            LOGGER.warning(
                                CCommon.languagestring(
                                    CCommon.class, "actioninstantiate", i, l_exception));
                            return null;
                          }
                        })

                    // action can be instantiate
                    .filter(Objects::nonNull)

                    // check usable action name
                    .filter(CCommon::actionusable);
              } catch (final IOException l_exception) {
                throw new UncheckedIOException(l_exception);
              }
            });
  }