com.fasterxml.jackson.databind.node

Class ContainerNode<T extends ContainerNode<T>>

java.lang.Object

com.fasterxml.jackson.databind.JsonSerializable.Base

com.fasterxml.jackson.databind.JsonNode

com.fasterxml.jackson.databind.node.BaseJsonNode

com.fasterxml.jackson.databind.node.ContainerNode<T>

All Implemented Interfaces:

TreeNode, JsonSerializable, JsonNodeCreator, Iterable<JsonNode>

Direct Known Subclasses:

ArrayNode, ObjectNode

public abstract class ContainerNode<T extends ContainerNode<T>>
extends BaseJsonNode
implements JsonNodeCreator

This intermediate base class is used for all container nodes, specifically, array and object nodes.

Nested Class Summary

Nested classes/interfaces inherited from interface com.fasterxml.jackson.databind.JsonSerializable

JsonSerializable.Base

Field Summary

Fields

Modifier and Type	Field and Description
protected JsonNodeFactory	_nodeFactory We will keep a reference to the Object (usually TreeMapper) that can construct instances of nodes to add to this container node.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ContainerNode(JsonNodeFactory nc)

Method Summary

Modifier and Type	Method and Description
ArrayNode	arrayNode() Factory method that constructs and returns an empty ArrayNode Construction is done using registered JsonNodeFactory.
ArrayNode	arrayNode(int capacity) Factory method that constructs and returns an ArrayNode with an initial capacity Construction is done using registered JsonNodeFactory
String	asText() 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.
abstract JsonToken	asToken() Method that can be used for efficient type detection when using stream abstraction for traversing nodes.
BinaryNode	binaryNode(byte[] data)
BinaryNode	binaryNode(byte[] data, int offset, int length)
BooleanNode	booleanNode(boolean v)
abstract JsonNode	get(int index) Method for accessing value of the specified element of an array node.
abstract JsonNode	get(String fieldName) Method for accessing value of the specified field of an object node.
NullNode	nullNode()
NumericNode	numberNode(BigDecimal v)
NumericNode	numberNode(BigInteger v)
NumericNode	numberNode(byte v)
ValueNode	numberNode(Byte v)
NumericNode	numberNode(double v)
ValueNode	numberNode(Double v)
NumericNode	numberNode(float v)
ValueNode	numberNode(Float v)
NumericNode	numberNode(int v)
ValueNode	numberNode(Integer v)
NumericNode	numberNode(long v)
ValueNode	numberNode(Long v)
NumericNode	numberNode(short v)
ValueNode	numberNode(Short v)
ObjectNode	objectNode() Factory method that constructs and returns an empty ObjectNode Construction is done using registered JsonNodeFactory.
ValueNode	pojoNode(Object pojo)
ValueNode	rawValueNode(RawValue value) Factory method to use for adding "raw values"; pre-encoded values that are included exactly as-is when node is serialized.
abstract T	removeAll() Method for removing all children container has (if any)
abstract int	size() 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.
TextNode	textNode(String text)

Methods inherited from class com.fasterxml.jackson.databind.node.BaseJsonNode

findPath, hashCode, numberType, serialize, serializeWithType, traverse, traverse

Methods inherited from class com.fasterxml.jackson.databind.JsonNode

_at, asBoolean, asBoolean, asDouble, asDouble, asInt, asInt, asLong, asLong, asText, at, at, bigIntegerValue, binaryValue, booleanValue, canConvertToInt, canConvertToLong, decimalValue, deepCopy, doubleValue, elements, equals, equals, fieldNames, fields, findParent, findParents, findParents, findValue, findValues, findValues, findValuesAsText, findValuesAsText, floatValue, getNodeType, has, has, hasNonNull, hasNonNull, intValue, isArray, isBigDecimal, isBigInteger, isBinary, isBoolean, isContainerNode, isDouble, isFloat, isFloatingPointNumber, isInt, isIntegralNumber, isLong, isMissingNode, isNull, isNumber, isObject, isPojo, isShort, isTextual, isValueNode, iterator, longValue, numberValue, path, path, shortValue, textValue, toString, with, withArray

Methods inherited from class com.fasterxml.jackson.databind.JsonSerializable.Base

isEmpty

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

_nodeFactory

protected final JsonNodeFactory _nodeFactory

We will keep a reference to the Object (usually TreeMapper) that can construct instances of nodes to add to this container node.

Constructor Detail

ContainerNode

protected ContainerNode(JsonNodeFactory nc)

Method Detail

asToken

public abstract 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 BaseJsonNode

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

size

public abstract 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

Overrides:

size in class JsonNode

Returns:

For non-container nodes returns 0; for arrays number of contained elements, and for objects number of fields.

get

public abstract 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 JsonNode

Returns:

Node that represent value of the specified element, if this node is an array and has specified element. Null otherwise.

get

public abstract JsonNode get(String fieldName)

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

Overrides:

get in class JsonNode

Returns:

Node that represent value of the specified field, if this node is an object and has value for the specified field. Null otherwise.

arrayNode

public final ArrayNode arrayNode()

Factory method that constructs and returns an empty ArrayNode Construction is done using registered JsonNodeFactory.

Specified by:

arrayNode in interface JsonNodeCreator

arrayNode

public final ArrayNode arrayNode(int capacity)

Factory method that constructs and returns an ArrayNode with an initial capacity Construction is done using registered JsonNodeFactory

Specified by:

arrayNode in interface JsonNodeCreator

Parameters:

capacity - the initial capacity of the ArrayNode

objectNode

public final ObjectNode objectNode()

Factory method that constructs and returns an empty ObjectNode Construction is done using registered JsonNodeFactory.

Specified by:

objectNode in interface JsonNodeCreator

nullNode

public final NullNode nullNode()

Specified by:

nullNode in interface JsonNodeCreator

booleanNode

public final BooleanNode booleanNode(boolean v)

Specified by:

booleanNode in interface JsonNodeCreator

numberNode

public final NumericNode numberNode(byte v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final NumericNode numberNode(short v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final NumericNode numberNode(int v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final NumericNode numberNode(long v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final NumericNode numberNode(BigInteger v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final NumericNode numberNode(float v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final NumericNode numberNode(double v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final NumericNode numberNode(BigDecimal v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final ValueNode numberNode(Byte v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final ValueNode numberNode(Short v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final ValueNode numberNode(Integer v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final ValueNode numberNode(Long v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final ValueNode numberNode(Float v)

Specified by:

numberNode in interface JsonNodeCreator

numberNode

public final ValueNode numberNode(Double v)

Specified by:

numberNode in interface JsonNodeCreator

textNode

public final TextNode textNode(String text)

Specified by:

textNode in interface JsonNodeCreator

binaryNode

public final BinaryNode binaryNode(byte[] data)

Specified by:

binaryNode in interface JsonNodeCreator

binaryNode

public final BinaryNode binaryNode(byte[] data,
                                   int offset,
                                   int length)

Specified by:

binaryNode in interface JsonNodeCreator

pojoNode

public final ValueNode pojoNode(Object pojo)

Specified by:

pojoNode in interface JsonNodeCreator

rawValueNode

public final ValueNode rawValueNode(RawValue value)

Description copied from interface: JsonNodeCreator

Factory method to use for adding "raw values"; pre-encoded values that are included exactly as-is when node is serialized. This may be used, for example, to include fully serialized JSON sub-trees. Note that the concept may not work with all backends, and since no translation of any kinds is done it will not work when converting between data formats.

Specified by:

rawValueNode in interface JsonNodeCreator

removeAll

public abstract T removeAll()

Method for removing all children container has (if any)

Returns:

Container node itself (to allow method call chaining)