public static ContextURL parse()

in lib/client-core/src/main/java/org/apache/olingo/client/core/serialization/ContextURLParser.java [32:117]
74 lines of code
21 McCabe index (conditional complexity)

  public static ContextURL parse(final URI contextURL) {
    if (contextURL == null) {
      return null;
    }

    final ContextURL.Builder contextUrl = ContextURL.with();

    String contextURLasString = contextURL.toASCIIString();

    boolean isEntity = false;
    if (contextURLasString.endsWith("/$entity") || contextURLasString.endsWith("/@Element")) {
      isEntity = true;
      contextUrl.suffix(Suffix.ENTITY);
      contextURLasString = contextURLasString.replace("/$entity", StringUtils.EMPTY).
          replace("/@Element", StringUtils.EMPTY);
    } else if (contextURLasString.endsWith("/$ref")) {
      contextUrl.suffix(Suffix.REFERENCE);
      contextURLasString = contextURLasString.replace("/$ref", StringUtils.EMPTY);
    } else if (contextURLasString.endsWith("/$delta")) {
      contextUrl.suffix(Suffix.DELTA);
      contextURLasString = contextURLasString.replace("/$delta", StringUtils.EMPTY);
    } else if (contextURLasString.endsWith("/$deletedEntity")) {
      contextUrl.suffix(Suffix.DELTA_DELETED_ENTITY);
      contextURLasString = contextURLasString.replace("/$deletedEntity", StringUtils.EMPTY);
    } else if (contextURLasString.endsWith("/$link")) {
      contextUrl.suffix(Suffix.DELTA_LINK);
      contextURLasString = contextURLasString.replace("/$link", StringUtils.EMPTY);
    } else if (contextURLasString.endsWith("/$deletedLink")) {
      contextUrl.suffix(Suffix.DELTA_DELETED_LINK);
      contextURLasString = contextURLasString.replace("/$deletedLink", StringUtils.EMPTY);
    }

    contextUrl.serviceRoot(URI.create(StringUtils.substringBefore(contextURLasString, Constants.METADATA)));

    final String rest = StringUtils.substringAfter(contextURLasString, Constants.METADATA + "#");

    String firstToken;
    String entitySetOrSingletonOrType;
    if (rest.startsWith("Collection(")) {
      firstToken = rest.substring(0, rest.indexOf(')') + 1);
      entitySetOrSingletonOrType = firstToken;
    } else {
      final int openParIdx = rest.indexOf('(');
      if (openParIdx == -1) {
        firstToken = StringUtils.substringBeforeLast(rest, "/");

        entitySetOrSingletonOrType = firstToken;
      } else {
        firstToken = isEntity ? rest : StringUtils.substringBeforeLast(rest, ")") + ")";

        final List<String> parts = new ArrayList<>();
        for (String split : firstToken.split("\\)/")) {
          parts.add(split.replaceAll("\\(.*", ""));
        }
        entitySetOrSingletonOrType = StringUtils.join(parts, '/');
        final int commaIdx = firstToken.indexOf(',');
        if (commaIdx != -1) {
          contextUrl.selectList(firstToken.substring(openParIdx + 1, firstToken.length() - 1));
        }
      }
    }
    contextUrl.entitySetOrSingletonOrType(entitySetOrSingletonOrType);

    final int slashIdx = entitySetOrSingletonOrType.lastIndexOf('/');
    if (slashIdx != -1 && entitySetOrSingletonOrType.substring(slashIdx + 1).indexOf('.') != -1) {
      contextUrl.entitySetOrSingletonOrType(entitySetOrSingletonOrType.substring(0, slashIdx));
      contextUrl.derivedEntity(entitySetOrSingletonOrType.substring(slashIdx + 1));
    }

    if (!firstToken.equals(rest)) {
      final String[] pathElems = StringUtils.substringAfter(rest, "/").split("/");
      if (pathElems.length > 0 && pathElems[0].length() > 0) {
        if (pathElems[0].indexOf('.') == -1) {
          contextUrl.navOrPropertyPath(pathElems[0]);
        } else {
          contextUrl.derivedEntity(pathElems[0]);
        }

        if (pathElems.length > 1) {
          contextUrl.navOrPropertyPath(pathElems[1]);
        }
      }
    }

    return contextUrl.build();
  }