code: @Override
      public Class<?> fromComponentNameToClass(final String componentName) { // *important
          if (LdiStringUtil.isEmpty(componentName)) {
              throw new EmptyRuntimeException("componentName");
          }
          final String suffix = fromComponentNameToSuffix(componentName);
          if (suffix == null) {
              return null;
          }
          final String middlePackageName = fromSuffixToPackageName(suffix);
          final String partOfClassName = fromComponentNameToPartOfClassName(componentName);
          final boolean subAppSuffix = isSubAppSuffix(suffix);
          final boolean webAppSufix = isWebAppSuffix(suffix);
          final boolean jobAppSufix = isJobAppSuffix(suffix);
          for (int i = 0; i < rootPackageNames.length; ++i) {
              final String rootPackageName = rootPackageNames[i];
              if (subAppSuffix) { // first search sub application package
                  Class<?> clazz = null;
                  if (webAppSufix) {
                      clazz = findWebClass(rootPackageName, partOfClassName);
                  } else if (jobAppSufix) {
                      clazz = findJobClass(rootPackageName, partOfClassName);
                  }
                  if (clazz != null) {
                      return clazz;
                  }
                  clazz = findClass(rootPackageName, middlePackageName, partOfClassName);
                  if (clazz != null) {
                      return clazz;
                  }
              } else {
                  Class<?> clazz = findClass(rootPackageName, middlePackageName, partOfClassName);
                  if (clazz != null) {
                      return clazz;
                  }
                  if (webAppSufix) {
                      clazz = findWebClass(rootPackageName, partOfClassName);
                  } else if (jobAppSufix) {
                      clazz = findJobClass(rootPackageName, partOfClassName);
                  } else { // e.g. base_login_harborLoginAssist (by "pickup" method)
                      clazz = findWebClass(rootPackageName, partOfClassName); // find as web at first
                      if (clazz == null) {
                          clazz = findJobClass(rootPackageName, partOfClassName); // and job as next
                      }
                  }
                  if (clazz != null) {
                      return clazz;
                  }
              }
          }
          return null;
      }
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