org.eclipse.ditto.json.JsonPointer.getRoot()方法的使用及代码示例

x33g5p2x  于2022-01-21 转载在 其他  
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本文整理了Java中org.eclipse.ditto.json.JsonPointer.getRoot()方法的一些代码示例，展示了JsonPointer.getRoot()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。JsonPointer.getRoot()方法的具体详情如下：
包路径：org.eclipse.ditto.json.JsonPointer
类名称：JsonPointer
方法名：getRoot

JsonPointer.getRoot介绍

[英]Returns the root JSON key of this pointer. If the level count of this pointer is one the root is the same as the leaf.
[中]返回此指针的根JSON键。如果此指针的级别计数为1，则根与叶相同。

代码示例

代码示例来源：origin: org.eclipse.ditto/ditto-protocol-adapter

@Override
public Optional<JsonKey> getRoot() {
  return jsonPointer.getRoot();
}

代码示例来源：origin: eclipse/ditto

@Override
public Optional<JsonKey> getRoot() {
  return jsonPointer.getRoot();
}

代码示例来源：origin: org.eclipse.ditto/ditto-protocol-adapter

@Override
public Optional<MessageDirection> getDirection() {
  return jsonPointer.getRoot()
      .flatMap(ImmutableMessagePath::jsonKeyToDirection)
      .map(Optional::of)
      .orElseGet(() -> jsonPointer.getRoot()
          .filter(FEATURES::equals)
          .flatMap(features -> jsonPointer.get(2))
          .flatMap(ImmutableMessagePath::jsonKeyToDirection));
}

代码示例来源：origin: eclipse/ditto

@Override
public Optional<MessageDirection> getDirection() {
  return jsonPointer.getRoot()
      .flatMap(ImmutableMessagePath::jsonKeyToDirection)
      .map(Optional::of)
      .orElseGet(() -> jsonPointer.getRoot()
          .filter(FEATURES::equals)
          .flatMap(features -> jsonPointer.get(2))
          .flatMap(ImmutableMessagePath::jsonKeyToDirection));
}

代码示例来源：origin: org.eclipse.ditto/ditto-protocol-adapter

@Override
public Optional<String> getFeatureId() {
  return jsonPointer.getRoot()
      .filter(FEATURES::equals)
      .map(features -> jsonPointer.nextLevel())
      .flatMap(JsonPointer::getRoot)
      .map(JsonKey::toString);
}

代码示例来源：origin: eclipse/ditto

@Override
public Optional<String> getFeatureId() {
  return jsonPointer.getRoot()
      .filter(FEATURES::equals)
      .map(features -> jsonPointer.nextLevel())
      .flatMap(JsonPointer::getRoot)
      .map(JsonKey::toString);
}

代码示例来源：origin: eclipse/ditto

/**
 * Check if inlined policy should be retrieved together with the thing.
 *
 * @param command the thing query command.
 * @return whether it is necessary to retrieve the thing's policy.
 */
private static boolean shouldRetrievePolicyWithThing(final ThingCommand command) {
  final RetrieveThing retrieveThing = (RetrieveThing) command;
  final boolean isNotV1 = JsonSchemaVersion.V_1 != command.getImplementedSchemaVersion();
  return isNotV1 && retrieveThing.getSelectedFields().filter(selector ->
      selector.getPointers().stream().anyMatch(jsonPointer ->
          jsonPointer.getRoot()
              .filter(jsonKey -> Policy.INLINED_FIELD_NAME.equals(jsonKey.toString()))
              .isPresent()))
      .isPresent();
}

代码示例来源：origin: org.eclipse.ditto/ditto-json

@Override
public Optional<JsonField> getField(final CharSequence key) {
  requireNonNull(key, "The key or pointer of the field to be retrieved must not be null!");
  final JsonPointer pointer = JsonFactory.newPointer(key);
  Optional<JsonField> result = pointer.getRoot()
      .map(JsonKey::toString)
      .map(fields::get);
  if (1 < pointer.getLevelCount()) {
    result = result.map(JsonField::getValue)
        .filter(JsonValue::isObject)
        .map(JsonValue::asObject)
        .flatMap(jsonObject -> jsonObject.getField(pointer.nextLevel())); // Recursion
  }
  return result;
}

代码示例来源：origin: eclipse/ditto

@Override
public Optional<JsonField> getField(final CharSequence key) {
  requireNonNull(key, "The key or pointer of the field to be retrieved must not be null!");
  final JsonPointer pointer = JsonPointer.of(key);
  Optional<JsonField> result = pointer.getRoot()
      .map(JsonKey::toString)
      .map(fieldMap::getOrNull);
  if (1 < pointer.getLevelCount()) {
    result = result.map(JsonField::getValue)
        .filter(JsonValue::isObject)
        .map(JsonValue::asObject)
        .flatMap(jsonObject -> jsonObject.getField(pointer.nextLevel())); // Recursion
  }
  return result;
}

代码示例来源：origin: eclipse/ditto

@Override
public boolean contains(final CharSequence key) {
  requireNonNull(key, "The key or pointer to check the existence of a value for must not be null!");
  final boolean result;
  final JsonPointer pointer = JsonPointer.of(key);
  if (1 >= pointer.getLevelCount()) {
    result = pointer.getRoot().map(this::containsKey).orElse(false);
  } else {
    result = pointer.getRoot()
        .flatMap(this::getValueForKey)
        .map(jsonValue -> !jsonValue.isObject() ||
            jsonValue.asObject().contains(pointer.nextLevel())) // Recursion
        .orElse(false);
  }
  return result;
}

代码示例来源：origin: org.eclipse.ditto/ditto-json

@Override
public boolean contains(final CharSequence key) {
  requireNonNull(key, "The key or pointer to check the existence of a value for must not be null!");
  final boolean result;
  final JsonPointer pointer = JsonFactory.newPointer(key);
  if (1 >= pointer.getLevelCount()) {
    result = pointer.getRoot().map(this::containsKey).orElse(false);
  } else {
    result = pointer.getRoot()
        .flatMap(this::getValueForKey)
        .map(jsonValue -> !jsonValue.isObject() ||
            jsonValue.asObject().contains(pointer.nextLevel())) // Recursion
        .orElse(false);
  }
  return result;
}

代码示例来源：origin: org.eclipse.ditto/ditto-json

private Optional<JsonValue> getValueForPointer(final JsonPointer pointer) {
  final Optional<JsonValue> result;
  final JsonKey rootKey = pointer.getRoot().orElse(ROOT_KEY);
  final int levelCount = pointer.getLevelCount();
  if (0 == levelCount) {
    result = Optional.of(this);
  } else if (1 == levelCount) {
    // same as getting a value for a key
    result = getValueForKey(rootKey);
  } else {
    result = getValueForKey(rootKey)
        .filter(JsonValue::isObject)
        .map(JsonValue::asObject)
        .flatMap(jsonObject -> jsonObject.getValue(pointer.nextLevel()));
  }
  return result;
}

代码示例来源：origin: eclipse/ditto

private Optional<JsonValue> getValueForPointer(final JsonPointer pointer) {
  final Optional<JsonValue> result;
  final JsonKey rootKey = pointer.getRoot().orElse(ROOT_KEY);
  final int levelCount = pointer.getLevelCount();
  if (0 == levelCount) {
    result = Optional.of(this);
  } else if (1 == levelCount) {
    // same as getting a value for a key
    result = getValueForKey(rootKey);
  } else {
    result = getValueForKey(rootKey)
        .filter(JsonValue::isObject)
        .map(JsonValue::asObject)
        .flatMap(jsonObject -> jsonObject.getValue(pointer.nextLevel()));
  }
  return result;
}

代码示例来源：origin: org.eclipse.ditto/ditto-json

private static JsonObject setFieldInHierarchy(final JsonObject target, final JsonPointer pointer,
    final JsonField jsonField) {
  if (1 >= pointer.getLevelCount()) {
    return target.set(jsonField);
  }
  final JsonKey rootKey = pointer.getRoot().orElse(ROOT_KEY);
  final JsonObject newTarget = target.getValue(rootKey)
      .filter(JsonValue::isObject)
      .filter(jsonValue -> !jsonValue.isNull())
      .map(JsonValue::asObject)
      .orElseGet(ImmutableJsonObject::empty);
  // let the recursion begin ]:-)
  return target.setValue(rootKey, setFieldInHierarchy(newTarget, pointer.nextLevel(), jsonField));
}

代码示例来源：origin: eclipse/ditto

private static JsonObject setFieldInHierarchy(final JsonObject target, final JsonPointer pointer,
    final JsonField jsonField) {
  if (1 >= pointer.getLevelCount()) {
    return target.set(jsonField);
  }
  final JsonKey rootKey = pointer.getRoot().orElse(ROOT_KEY);
  final JsonObject newTarget = target.getValue(rootKey)
      .filter(JsonValue::isObject)
      .filter(jsonValue -> !jsonValue.isNull())
      .map(JsonValue::asObject)
      .orElseGet(ImmutableJsonObject::empty);
  // let the recursion begin ]:-)
  return target.setValue(rootKey, setFieldInHierarchy(newTarget, pointer.nextLevel(), jsonField));
}

代码示例来源：origin: org.eclipse.ditto/ditto-json

private ImmutableJsonObjectBuilder remove(final JsonPointer pointer) {
  pointer.getRoot()
      .map(JsonKey::toString)
      .map(fields::get)
      .ifPresent(jsonField -> {
        final JsonValue rootValue = jsonField.getValue();
        final JsonPointer nextPointerLevel = pointer.nextLevel();
        if (rootValue.isObject() && !nextPointerLevel.isEmpty()) {
          JsonObject rootObject = rootValue.asObject();
          rootObject = rootObject.remove(nextPointerLevel);
          set(JsonFactory.newField(jsonField.getKey(), rootObject,
              jsonField.getDefinition().orElse(null)));
        } else {
          fields.remove(jsonField.getKeyName());
        }
      });
  return this;
}

代码示例来源：origin: eclipse/ditto

private ImmutableJsonObjectBuilder remove(final JsonPointer pointer) {
  pointer.getRoot()
      .map(JsonKey::toString)
      .map(fields::get)
      .ifPresent(jsonField -> {
        final JsonValue rootValue = jsonField.getValue();
        final JsonPointer nextPointerLevel = pointer.nextLevel();
        if (rootValue.isObject() && !nextPointerLevel.isEmpty()) {
          JsonObject rootObject = rootValue.asObject();
          rootObject = rootObject.remove(nextPointerLevel);
          set(JsonFactory.newField(jsonField.getKey(), rootObject,
              jsonField.getDefinition().orElse(null)));
        } else {
          fields.remove(jsonField.getKeyName());
        }
      });
  return this;
}

代码示例来源：origin: eclipse/ditto

/**
 * Verifies that the actual JSON pointer has the specified root.
 *
 * @param expectedRoot the expected root of the actual JSON pointer.
 * @return this assert to allow method chaining.
 */
public JsonPointerAssert hasRoot(final JsonKey expectedRoot) {
  isNotNull();
  final Optional<JsonKey> actualRoot = actual.getRoot();
  Assertions.assertThat(actualRoot)
      .overridingErrorMessage("Expected <%s> to have root <%s> but it had <%s>", actual, expectedRoot,
          actualRoot.orElse(null))
      .contains(expectedRoot);
  return myself;
}

代码示例来源：origin: org.eclipse.ditto/ditto-json

private static JsonObjectBuilder setFieldInHierarchy(final ImmutableJsonObjectBuilder target,
    final JsonPointer pointer, final JsonField field) {
  if (1 >= pointer.getLevelCount()) {
    return target.set(field);
  }
  final JsonKey rootKey = pointer.getRoot().orElse(ROOT_KEY);
  final ImmutableJsonObjectBuilder newTarget = newInstance();
  final JsonField rootJsonField = target.fields.get(rootKey.toString());
  if (null != rootJsonField) {
    final JsonValue rootValue = rootJsonField.getValue();
    if (rootValue.isObject() && !rootValue.isNull()) {
      newTarget.setAll(rootValue.asObject());
    }
  }
  // let the recursion begin >:-(
  final JsonObject jsonObject = setFieldInHierarchy(newTarget, pointer.nextLevel(), field).build();
  return target.set(rootKey, jsonObject);
}

代码示例来源：origin: eclipse/ditto

private static JsonObjectBuilder setFieldInHierarchy(final ImmutableJsonObjectBuilder target,
    final JsonPointer pointer, final JsonField field) {
  if (1 >= pointer.getLevelCount()) {
    return target.set(field);
  }
  final JsonKey rootKey = pointer.getRoot().orElse(ROOT_KEY);
  final ImmutableJsonObjectBuilder newTarget = newInstance();
  final JsonField rootJsonField = target.fields.get(rootKey.toString());
  if (null != rootJsonField) {
    final JsonValue rootValue = rootJsonField.getValue();
    if (rootValue.isObject() && !rootValue.isNull()) {
      newTarget.setAll(rootValue.asObject());
    }
  }
  // let the recursion begin >:-(
  final JsonObject jsonObject = setFieldInHierarchy(newTarget, pointer.nextLevel(), field).build();
  return target.set(rootKey, jsonObject);
}

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