com.fasterxml.jackson.databind.node

Class NullNode

    • Field Detail

      • instance

        public static final NullNode instance
    • Constructor Detail

      • NullNode

        protected NullNode()

        NOTE: visibility raised to `protected` in 2.9.3 to allow custom subtypes.

    • Method Detail

      • readResolve

        protected Object readResolve()
      • getInstance

        public static NullNode getInstance()
      • asToken

        public com.fasterxml.jackson.core.JsonToken asToken()
        Description copied from class: BaseJsonNode
        Method that can be used for efficient type detection when using stream abstraction for traversing nodes. Will return the first JsonToken that equivalent stream event would produce (for most nodes there is just one token but for structured/container types multiple)
        Specified by:
        asToken in interface com.fasterxml.jackson.core.TreeNode
        Specified by:
        asToken in class ValueNode
      • asText

        public String asText(String defaultValue)
        Description copied from class: JsonNode
        Method similar to JsonNode.asText(), except that it will return defaultValue in cases where null value would be returned; either for missing nodes (trying to access missing property, or element at invalid item for array) or explicit nulls.
        Overrides:
        asText in class JsonNode
      • asText

        public String asText()
        Description copied from class: JsonNode
        Method that will return a valid String representation of the container value, if the node is a value node (method JsonNode.isValueNode() returns true), otherwise empty String.
        Specified by:
        asText in class JsonNode
      • equals

        public boolean equals(Object o)
        Description copied from class: JsonNode
        Equality for node objects is defined as full (deep) value equality. This means that it is possible to compare complete JSON trees for equality by comparing equality of root nodes.

        Note: marked as abstract to ensure all implementation classes define it properly and not rely on definition from Object.

        Specified by:
        equals in class JsonNode

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