All Implemented Interfaces:
TreeNode, JsonSerializable, JsonNodeCreator, Serializable, Iterable<JsonNode>

public class ObjectNode extends ContainerNode<ObjectNode> implements Serializable
Node that maps to JSON Object structures in JSON content.

Note: class was final temporarily for Jackson 2.2.

See Also:
  • Field Details

  • Constructor Details

  • Method Details

    • _at

      protected JsonNode _at(JsonPointer ptr)
      Description copied from class: JsonNode
      Helper method used by other methods for traversing the next step of given path expression, and returning matching value node if any: if no match, null is returned.
      Specified by:
      _at in class JsonNode
      Parameters:
      ptr - Path expression to use
      Returns:
      Either matching JsonNode for the first step of path or null if no match (including case that this node is not a container)
    • deepCopy

      public ObjectNode deepCopy()
      Description copied from class: JsonNode
      Method that can be called to get a node that is guaranteed not to allow changing of this node through mutators on this node or any of its children. This means it can either make a copy of this node (and all mutable children and grand children nodes), or node itself if it is immutable.

      Note: return type is guaranteed to have same type as the node method is called on; which is why method is declared with local generic type.

      Specified by:
      deepCopy in class JsonNode
      Returns:
      Node that is either a copy of this node (and all non-leaf children); or, for immutable leaf nodes, node itself.
    • with

      @Deprecated public ObjectNode with(String exprOrProperty)
      Deprecated.
      Description copied from class: JsonNode
      Method that works in one of possible ways, depending on whether exprOrProperty is a valid JsonPointer expression or not (valid expression is either empty String "" or starts with leading slash / character). If it is, works as a short-cut to:
        withObject(JsonPointer.compile(exprOrProperty));
      
      If it is NOT a valid JsonPointer expression, value is taken as a literal Object property name and traversed like a single-segment JsonPointer.

      NOTE: before Jackson 2.14 behavior was always that of non-expression usage; that is, exprOrProperty was always considered as a simple property name.

      Overrides:
      with in class JsonNode
    • withArray

      public ArrayNode withArray(String exprOrProperty)
      Description copied from class: JsonNode
      Method that works in one of possible ways, depending on whether exprOrProperty is a valid JsonPointer expression or not (valid expression is either empty String "" or starts with leading slash / character). If it is, works as a short-cut to:
        withObject(JsonPointer.compile(exprOrProperty));
      
      If it is NOT a valid JsonPointer expression, value is taken as a literal Object property name and traversed like a single-segment JsonPointer.

      NOTE: before Jackson 2.14 behavior was always that of non-expression usage; that is, exprOrProperty was always considered as a simple property name.

      Overrides:
      withArray in class JsonNode
      Parameters:
      exprOrProperty - Either JsonPointer expression for full access (if valid pointer expression), or the name of property for the ArrayNode.
      Returns:
      ArrayNode found or created
    • _withObject

      protected ObjectNode _withObject(JsonPointer origPtr, JsonPointer currentPtr, JsonNode.OverwriteMode overwriteMode, boolean preferIndex)
      Specified by:
      _withObject in class ContainerNode<ObjectNode>
    • _withArray

      protected ArrayNode _withArray(JsonPointer origPtr, JsonPointer currentPtr, JsonNode.OverwriteMode overwriteMode, boolean preferIndex)
      Overrides:
      _withArray in class BaseJsonNode
    • _withObjectAddTailProperty

      protected ObjectNode _withObjectAddTailProperty(JsonPointer tail, boolean preferIndex)
    • _withArrayAddTailProperty

      protected ArrayNode _withArrayAddTailProperty(JsonPointer tail, boolean preferIndex)
    • isEmpty

      public boolean isEmpty(SerializerProvider serializers)
      Description copied from class: JsonSerializable.Base
      Method that may be called on instance to determine if it is considered "empty" for purposes of serialization filtering or not.
      Overrides:
      isEmpty in class JsonSerializable.Base
    • getNodeType

      public JsonNodeType getNodeType()
      Description copied from class: JsonNode
      Return the type of this node
      Specified by:
      getNodeType in class JsonNode
      Returns:
      the node type as a JsonNodeType enum value
    • isObject

      public final boolean isObject()
      Description copied from interface: TreeNode
      Method that returns true if this node is an Object node, false otherwise. Note that if true is returned, TreeNode.isContainerNode() must also return true.
      Specified by:
      isObject in interface TreeNode
      Overrides:
      isObject in class JsonNode
      Returns:
      True for Object nodes, false for everything else
    • asToken

      public 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 TreeNode
      Specified by:
      asToken in class ContainerNode<ObjectNode>
      Returns:
      JsonToken that is most closely associated with the node type
    • size

      public int size()
      Description copied from interface: TreeNode
      Method that returns number of child nodes this node contains: for Array nodes, number of child elements, for Object nodes, number of fields, and for all other nodes 0.
      Specified by:
      size in interface TreeNode
      Specified by:
      size in class ContainerNode<ObjectNode>
      Returns:
      For non-container nodes returns 0; for arrays number of contained elements, and for objects number of fields.
    • isEmpty

      public boolean isEmpty()
      Description copied from class: JsonNode
      Convenience method that is functionally same as:
          size() == 0
      
      for all node types.
      Overrides:
      isEmpty in class JsonNode
    • elements

      public Iterator<JsonNode> elements()
      Description copied from class: JsonNode
      Method for accessing all value nodes of this Node, iff this node is a JSON Array or Object node. In case of Object node, field names (keys) are not included, only values. For other types of nodes, returns empty iterator.
      Overrides:
      elements in class JsonNode
    • get

      public JsonNode get(int index)
      Description copied from class: JsonNode
      Method for accessing value of the specified element of an array node. For other nodes, null is always returned.

      For array nodes, index specifies exact location within array and allows for efficient iteration over child elements (underlying storage is guaranteed to be efficiently indexable, i.e. has random-access to elements). If index is less than 0, or equal-or-greater than node.size(), null is returned; no exception is thrown for any index.

      NOTE: if the element value has been explicitly set as null (which is different from removal!), a NullNode will be returned, not null.

      Specified by:
      get in interface TreeNode
      Specified by:
      get in class ContainerNode<ObjectNode>
      Parameters:
      index - Index of the Array node element to access
      Returns:
      Node that represent value of the specified element, if this node is an array and has specified element. Null otherwise.
    • get

      public JsonNode get(String propertyName)
      Description copied from class: JsonNode
      Method for accessing value of the specified field of an object node. If this node is not an object (or it does not have a value for specified field name), or if there is no field with such name, null is returned.

      NOTE: if the property value has been explicitly set as null (which is different from removal!), a NullNode will be returned, not null.

      Specified by:
      get in interface TreeNode
      Specified by:
      get in class ContainerNode<ObjectNode>
      Parameters:
      propertyName - Name of the field (of Object node) to access
      Returns:
      Node that represent value of the specified field, if this node is an object and has value for the specified field. Null otherwise.
    • fieldNames

      public Iterator<String> fieldNames()
      Description copied from interface: TreeNode
      Method for accessing names of all fields for this node, iff this node is an Object node. Number of field names accessible will be TreeNode.size().
      Specified by:
      fieldNames in interface TreeNode
      Overrides:
      fieldNames in class JsonNode
      Returns:
      An iterator for traversing names of all fields this Object node has (if Object node); empty Iterator otherwise (never null).
    • path

      public JsonNode path(int index)
      Description copied from class: JsonNode
      This method is similar to JsonNode.get(int), except that instead of returning null if no such element exists (due to index being out of range, or this node not being an array), a "missing node" (node that returns true for JsonNode.isMissingNode()) will be returned. This allows for convenient and safe chained access via path calls.
      Specified by:
      path in interface TreeNode
      Specified by:
      path in class JsonNode
      Parameters:
      index - Index of the Array node element to access
      Returns:
      Node that represent value of the specified element, if this node is an array and has specified element; otherwise "missing node" is returned.
    • path

      public JsonNode path(String propertyName)
      Description copied from class: JsonNode
      This method is similar to JsonNode.get(String), except that instead of returning null if no such value exists (due to this node not being an object, or object not having value for the specified field), a "missing node" (node that returns true for JsonNode.isMissingNode()) will be returned. This allows for convenient and safe chained access via path calls.
      Specified by:
      path in interface TreeNode
      Specified by:
      path in class JsonNode
      Parameters:
      propertyName - Name of the field (of Object node) to access
      Returns:
      Node that represent value of the specified field, if this node is an object and has value for the specified field; otherwise "missing node" is returned.
    • required

      public JsonNode required(String propertyName)
      Description copied from class: JsonNode
      Method is functionally equivalent to path(fieldName).required() and can be used to check that this node is an ObjectNode (that is, represents JSON Object value) and has value for specified property with key fieldName (but note that value may be explicit JSON null value). If this node is Object Node and has value for specified property, matching value is returned; otherwise IllegalArgumentException is thrown.
      Overrides:
      required in class BaseJsonNode
      Parameters:
      propertyName - Name of property to access
      Returns:
      Value of the specified property of this Object node
    • fields

      public Iterator<Map.Entry<String,JsonNode>> fields()
      Method to use for accessing all properties (with both names and values) of this JSON Object.
      Overrides:
      fields in class JsonNode
      Returns:
      Iterator that can be used to traverse all key/value pairs for object nodes; empty iterator (no contents) for other types
    • equals

      public boolean equals(Comparator<JsonNode> comparator, JsonNode o)
      Description copied from class: JsonNode
      Entry method for invoking customizable comparison, using passed-in Comparator object. Nodes will handle traversal of structured types (arrays, objects), but defer to comparator for scalar value comparisons. If a "natural" Comparator is passed -- one that simply calls equals() on one of arguments, passing the other -- implementation is the same as directly calling equals() on node.

      Default implementation simply delegates to passed in comparator, with this as the first argument, and other as the second argument.

      Overrides:
      equals in class JsonNode
      Parameters:
      comparator - Object called to compare two scalar JsonNode instances, and return either 0 (are equals) or non-zero (not equal)
    • findValue

      public JsonNode findValue(String propertyName)
      Description copied from class: JsonNode
      Method for finding a JSON Object field with specified name in this node or its child nodes, and returning value it has. If no matching field is found in this node or its descendants, returns null.
      Specified by:
      findValue in class JsonNode
      Parameters:
      propertyName - Name of field to look for
      Returns:
      Value of first matching node found, if any; null if none
    • findValues

      public List<JsonNode> findValues(String propertyName, List<JsonNode> foundSoFar)
      Specified by:
      findValues in class JsonNode
    • findValuesAsText

      public List<String> findValuesAsText(String propertyName, List<String> foundSoFar)
      Specified by:
      findValuesAsText in class JsonNode
    • findParent

      public ObjectNode findParent(String propertyName)
      Description copied from class: JsonNode
      Method for finding a JSON Object that contains specified field, within this node or its descendants. If no matching field is found in this node or its descendants, returns null.
      Specified by:
      findParent in class JsonNode
      Parameters:
      propertyName - Name of field to look for
      Returns:
      Value of first matching node found, if any; null if none
    • findParents

      public List<JsonNode> findParents(String propertyName, List<JsonNode> foundSoFar)
      Specified by:
      findParents in class JsonNode
    • serialize

      public void serialize(JsonGenerator g, SerializerProvider provider) throws IOException
      Method that can be called to serialize this node and all of its descendants using specified JSON generator.
      Specified by:
      serialize in interface JsonSerializable
      Specified by:
      serialize in class BaseJsonNode
      Throws:
      IOException
    • serializeWithType

      public void serializeWithType(JsonGenerator g, SerializerProvider provider, TypeSerializer typeSer) throws IOException
      Description copied from class: BaseJsonNode
      Type information is needed, even if JsonNode instances are "plain" JSON, since they may be mixed with other types.
      Specified by:
      serializeWithType in interface JsonSerializable
      Specified by:
      serializeWithType in class BaseJsonNode
      Throws:
      IOException
    • serializeFilteredContents

      protected void serializeFilteredContents(JsonGenerator g, SerializerProvider provider, boolean trimEmptyArray, boolean skipNulls) throws IOException
      Throws:
      IOException
      Since:
      2.14
    • set

      public <T extends JsonNode> T set(String propertyName, JsonNode value)
      Method that will set specified property, replacing old value, if any. Note that this is identical to replace(String, JsonNode), except for return value.

      NOTE: added to replace those uses of put(String, JsonNode) where chaining with 'this' is desired.

      NOTE: co-variant return type since 2.10

      Parameters:
      propertyName - Name of property to set
      value - Value to set property to; if null, will be converted to a NullNode first (to remove a property, call remove(java.lang.String) instead)
      Returns:
      This node after adding/replacing property value (to allow chaining)
      Since:
      2.1
    • setAll

      public <T extends JsonNode> T setAll(Map<String,? extends JsonNode> properties)
      Method for adding given properties to this object node, overriding any existing values for those properties.

      NOTE: co-variant return type since 2.10

      Parameters:
      properties - Properties to add
      Returns:
      This node after adding/replacing property values (to allow chaining)
      Since:
      2.1
    • setAll

      public <T extends JsonNode> T setAll(ObjectNode other)
      Method for adding all properties of the given Object, overriding any existing values for those properties.

      NOTE: co-variant return type since 2.10

      Parameters:
      other - Object of which properties to add to this object
      Returns:
      This node after addition (to allow chaining)
      Since:
      2.1
    • replace

      public JsonNode replace(String propertyName, JsonNode value)
      Method for replacing value of specific property with passed value, and returning value (or null if none).
      Parameters:
      propertyName - Property of which value to replace
      value - Value to set property to, replacing old value if any
      Returns:
      Old value of the property; null if there was no such property with value
      Since:
      2.1
    • without

      public <T extends JsonNode> T without(String propertyName)
      Method for removing property from this ObjectNode, and returning instance after removal.

      NOTE: co-variant return type since 2.10

      Returns:
      This node after removing property (if any)
      Since:
      2.1
    • without

      public <T extends JsonNode> T without(Collection<String> propertyNames)
      Method for removing specified field properties out of this ObjectNode.

      NOTE: co-variant return type since 2.10

      Parameters:
      propertyNames - Names of properties to remove
      Returns:
      This node after removing entries
      Since:
      2.1
    • put

      @Deprecated public JsonNode put(String propertyName, JsonNode value)
      Deprecated.
      Method that will set specified property, replacing old value, if any.
      Parameters:
      propertyName - Name of property to set
      value - Value to set to property; if null, will be converted to a NullNode first (to remove a property, call remove(java.lang.String) instead).
      Returns:
      Old value of the property, if any; null if there was no old value.
    • putIfAbsent

      public JsonNode putIfAbsent(String propertyName, JsonNode value)
      Method that will set value of specified property if (and only if) it had no set value previously. Note that explicitly set null is a value. Functionally equivalent to: if (get(propertyName) == null) { set(propertyName, value); return null; } else { return get(propertyName); }
      Parameters:
      propertyName - Name of property to set
      value - Value to set to property (if and only if it had no value previously); if null, will be converted to a NullNode first.
      Returns:
      Old value of the property, if any (in which case value was not changed); null if there was no old value (in which case value is now set)
      Since:
      2.13
    • remove

      public JsonNode remove(String propertyName)
      Method for removing a property from this ObjectNode. Will return previous value of the property, if such property existed; null if not.
      Returns:
      Value of specified property, if it existed; null if not
    • remove

      public ObjectNode remove(Collection<String> propertyNames)
      Method for removing specified field properties out of this ObjectNode.
      Parameters:
      propertyNames - Names of fields to remove
      Returns:
      This node after removing entries
    • removeAll

      public ObjectNode removeAll()
      Method for removing all properties, such that this ObjectNode will contain no properties after call.
      Specified by:
      removeAll in class ContainerNode<ObjectNode>
      Returns:
      This node after removing all entries
    • putAll

      @Deprecated public JsonNode putAll(Map<String,? extends JsonNode> properties)
      Deprecated.
      Since 2.4 use setAll(Map),
      Method for adding given properties to this object node, overriding any existing values for those properties.
      Parameters:
      properties - Properties to add
      Returns:
      This node after adding/replacing property values (to allow chaining)
    • putAll

      @Deprecated public JsonNode putAll(ObjectNode other)
      Deprecated.
      Since 2.4 use setAll(ObjectNode),
      Method for adding all properties of the given Object, overriding any existing values for those properties.
      Parameters:
      other - Object of which properties to add to this object
      Returns:
      This node (to allow chaining)
    • retain

      public ObjectNode retain(Collection<String> propertyNames)
      Method for removing all properties out of this ObjectNode except for ones specified in argument.
      Parameters:
      propertyNames - Fields to retain in this ObjectNode
      Returns:
      This node (to allow call chaining)
    • retain

      public ObjectNode retain(String... propertyNames)
      Method for removing all properties out of this ObjectNode except for ones specified in argument.
      Parameters:
      propertyNames - Fields to retain in this ObjectNode
      Returns:
      This node (to allow call chaining)
    • putArray

      public ArrayNode putArray(String propertyName)
      Method that will construct an ArrayNode and add it as a property of this ObjectNode, replacing old value, if any.

      NOTE: Unlike all put(...) methods, return value is NOT this ObjectNode, but the newly created ArrayNode instance.

      Returns:
      Newly constructed ArrayNode (NOT the old value, which could be of any type)
    • putObject

      public ObjectNode putObject(String propertyName)
      Method that will construct an ObjectNode and add it as a property of this ObjectNode, replacing old value, if any.

      NOTE: Unlike all put(...) methods, return value is NOT this ObjectNode, but the newly created ObjectNode instance.

      Returns:
      Newly constructed ObjectNode (NOT the old value, which could be of any type)
    • putPOJO

      public ObjectNode putPOJO(String propertyName, Object pojo)
      Method for adding an opaque Java value as the value of specified property. Value can be serialized like any other property, as long as Jackson can serialize it. Despite term "POJO" this allows use of about any Java type, including Maps, Collections, as well as Beans (POJOs), primitives/wrappers and even JsonNodes. Method is most commonly useful when composing content to serialize from heterogenous sources.

      NOTE: if using JsonNode.toString() (or JsonNode.toPrettyString() support for serialization may be more limited, compared to serializing node with specifically configured ObjectMapper.

      Parameters:
      propertyName - Name of property to set.
      pojo - Java value to set as the property value
      Returns:
      This ObjectNode (to allow chaining)
    • putRawValue

      public ObjectNode putRawValue(String propertyName, RawValue raw)
      Since:
      2.6
    • putNull

      public ObjectNode putNull(String propertyName)
      Method for setting value of a property to explicit null value.
      Parameters:
      propertyName - Name of property to set.
      Returns:
      This ObjectNode (to allow chaining)
    • put

      public ObjectNode put(String propertyName, short v)
      Method for setting value of a property to specified numeric value.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, Short v)
      Alternative method that we need to avoid bumping into NPE issues with auto-unboxing.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, int v)
      Method for setting value of a field to specified numeric value. The underlying JsonNode that will be added is constructed using JsonNodeFactory.numberNode(int), and may be "smaller" (like ShortNode) in cases where value fits within range of a smaller integral numeric value.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, Integer v)
      Alternative method that we need to avoid bumping into NPE issues with auto-unboxing.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, long v)
      Method for setting value of a field to specified numeric value. The underlying JsonNode that will be added is constructed using JsonNodeFactory.numberNode(long), and may be "smaller" (like IntNode) in cases where value fits within range of a smaller integral numeric value.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, Long v)
      Method for setting value of a field to specified numeric value. The underlying JsonNode that will be added is constructed using JsonNodeFactory.numberNode(Long), and may be "smaller" (like IntNode) in cases where value fits within range of a smaller integral numeric value.

      Note that this is alternative to put(String, long) needed to avoid bumping into NPE issues with auto-unboxing.

      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, float v)
      Method for setting value of a field to specified numeric value.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, Float v)
      Alternative method that we need to avoid bumping into NPE issues with auto-unboxing.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, double v)
      Method for setting value of a field to specified numeric value.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, Double v)
      Alternative method that we need to avoid bumping into NPE issues with auto-unboxing.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, BigDecimal v)
      Method for setting value of a field to specified numeric value.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, BigInteger v)
      Method for setting value of a field to specified numeric value.
      Returns:
      This node (to allow chaining)
      Since:
      2.9
    • put

      public ObjectNode put(String fieldName, String v)
      Method for setting value of a field to specified String value.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, boolean v)
      Method for setting value of a field to specified String value.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, Boolean v)
      Alternative method that we need to avoid bumping into NPE issues with auto-unboxing.
      Returns:
      This node (to allow chaining)
    • put

      public ObjectNode put(String fieldName, byte[] v)
      Method for setting value of a field to specified binary value
      Returns:
      This node (to allow chaining)
    • 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
    • _childrenEqual

      protected boolean _childrenEqual(ObjectNode other)
      Since:
      2.3
    • hashCode

      public int hashCode()
      Specified by:
      hashCode in class BaseJsonNode
    • _put

      protected ObjectNode _put(String fieldName, JsonNode value)