Class DeepModifiableValueMapDecorator

  • All Implemented Interfaces:
    Map<String,​Object>, ModifiableValueMap, ValueMap

    public class DeepModifiableValueMapDecorator
    extends ModifiableValueMapDecorator
    A value map wrapper which implements deep reading/writing of properties based on the resource tree and a set of exposed sub-nodes. Note that only properties of exposed sub-nodes can be updated.
    • Constructor Detail

      • DeepModifiableValueMapDecorator

        public DeepModifiableValueMapDecorator​(Resource resource,
                                               Map<String,​Object> base,
                                               String[] subnodes)
      • DeepModifiableValueMapDecorator

        public DeepModifiableValueMapDecorator​(Resource resource,
                                               Map<String,​Object> base)
    • Method Detail

      • get

        public <T> T get​(String name,
                         Class<T> type)
        Get a named property and convert it into the given type. This method does not support conversion into a primitive type or an array of a primitive type. It should return null in this case.
        Specified by:
        get in interface ValueMap
        Overrides:
        get in class ValueMapDecorator
        Type Parameters:
        T - The class of the type
        Parameters:
        name - The name of the property
        type - The class of the type
        Returns:
        Return named value converted to type T or null if non existing or can't be converted.
      • get

        public <T> T get​(String name,
                         T defaultValue)
        Get a named property and convert it into the given type. This method does not support conversion into a primitive type or an array of a primitive type. It should return the default value in this case.

        Implementation hint: In the past it was allowed to call this with a 2nd parameter being null. Therefore all implementations should internally call Map.get(Object) when the 2nd parameter has value null.
        Specified by:
        get in interface ValueMap
        Overrides:
        get in class ValueMapDecorator
        Type Parameters:
        T - The expected type
        Parameters:
        name - The name of the property
        defaultValue - The default value to use if the named property does not exist or cannot be converted to the requested type. The default value is also used to define the type to convert the value to. Must not be null. If you want to return null by default rather rely on ValueMap.get(String, Class).
        Returns:
        Return named value converted to type T or the default value if non existing or can't be converted.