Method Detail

• getValidator

  Validator<? super V> getValidator()

  Returns:

  the Validator used to validate the property.

• getExpression

  Supplier<? extends V> getExpression()

  Returns:

  the optional Supplier that calculates the value dynamically. May be null for a regular property. If it is not null the property will automatically be read-only. You should not provide an explicit validator if you provide an expression.

• get

  Object get​(String key)

  Parameters:

  key - the key of the requested metadata.

  Returns:

  the value of the metadata for the given key. Will be null if no metadata exists for the given key.

  See Also:

  get(String, Class)

• get

  default <T> T get​(String key,
                    Class<T> type)

  Type Parameters:

  T - type of the metadata.

  Parameters:

  key - the key of the requested metadata.

  type - Class reflecting the type of the requested metadata value.

  Returns:

  the value of the metadata for the given key. Will be null if no metadata exists for the given key.

• get

  default <T> T get​(Class<T> type)

  ATTENTION: This is a convenient method for get(String, Class) where Class.getName() is used as key. Be aware that this can only work for final classes, Annotations or if the producer of this PropertyMetadata provides the metadata under the type you are expecting as API. Also it is discouraged to use this method for generic types such as String or Long as values of such type can be anything and should have a semantic key.

  Type Parameters:

  T - type of the metadata.

  Parameters:

  type - Class reflecting the type of the requested metadata value.

  Returns:

  the value of the metadata for the given key. Will be null if no metadata exists for the given key.

  See Also:

  get(String, Class)

• getKeys

  Iterable<String> getKeys()

  Returns:

  the Iterable of all metadata keys.

• getKeyCount

  int getKeyCount()

  Returns:

  the size of the key/ value pairs in this map.

• hasKeys

  default boolean hasKeys()

  Returns:

  true if this metadata has at least one key/value pair, false otherwise (if empty and key count is 0).

• asMap

  Map<String,​Object> asMap()

  Returns:

  a new or immutable Map with this metadata key/value pairs.

• getValueType

  Type getValueType()

  Returns:

  the optional Type of the property value. May be null.

  See Also:

  ReadableTypedValue.getValueClass()

• getMarshalling

  default Marshalling<V> getMarshalling()

  Returns:

  the optional custom Marshalling. If null the default marshalling of the Property is used. Overriding also allows to extend or replace the property value with more complex data from this metadata - e.g. to reuse a Bean to represent a query to find instances of that Bean.

• isTransient

  default boolean isTransient()

  Returns:

  true if transient (e.g. computed and therefore not to be marshalled), false otherwise.

  See Also:

  ReadableProperty.isTransient()

• withValidator

  PropertyMetadata<V> withValidator​(Validator<? super V> validator)

  Parameters:

  validator - the new Validator.

  Returns:

  a new instance of PropertyMetadata with the given Validator used for getValidator().