BaseJsonNode (jackson-databind 2.1.3)

java.lang.Object
- com.fasterxml.jackson.databind.JsonNode
- - com.fasterxml.jackson.databind.node.BaseJsonNode

All Implemented Interfaces:

TreeNode, JsonSerializable, Iterable<JsonNode>

Direct Known Subclasses:

ContainerNode, MissingNode, ValueNode
```
public abstract class BaseJsonNode
extends JsonNode
implements JsonSerializable
```
Abstract base class common to all standard JsonNode implementations. The main addition here is that we declare that sub-classes must implement JsonSerializable. This simplifies object mapping aspects a bit, as no external serializers are needed.

Field Summary
- Fields inherited from class com.fasterxml.jackson.databind.JsonNode
  NO_NODES, NO_STRINGS

Constructor Summary

Constructors
Modifier Constructor and Description

protected BaseJsonNode()

Constructors
Modifier	Constructor and Description
`protected`	`BaseJsonNode()`

Method Summary

Methods
Modifier and Type	Method and Description
`abstract JsonToken`	`asToken()` Method that can be used for efficient type detection when using stream abstraction for traversing nodes.
`ObjectNode`	`findParent(String fieldName)` Method for finding a JSON Object that contains specified field, within this node or its descendants.
`List<JsonNode>`	`findParents(String fieldName, List<JsonNode> foundSoFar)`
`JsonNode`	`findPath(String fieldName)` Method similar to `JsonNode.findValue(java.lang.String)`, but that will return a "missing node" instead of null if no field is found.
`JsonNode`	`findValue(String fieldName)` Method for finding a JSON Object field with specified name in this node or its child nodes, and returning value it has.
`List<JsonNode>`	`findValues(String fieldName, List<JsonNode> foundSoFar)`
`List<String>`	`findValuesAsText(String fieldName, List<String> foundSoFar)`
`JsonParser.NumberType`	`numberType()` Returns code that identifies type of underlying numeric value, if (and only if) node is a number node.
`abstract void`	`serialize(JsonGenerator jgen, SerializerProvider provider)` Method called to serialize node instances using given generator.
`abstract void`	`serializeWithType(JsonGenerator jgen, SerializerProvider provider, TypeSerializer typeSer)` Type information is needed, even if JsonNode instances are "plain" JSON, since they may be mixed with other types.
`JsonParser`	`traverse()` Method for constructing a `JsonParser` instance for iterating over contents of the tree that this node is root of.

Methods inherited from class com.fasterxml.jackson.databind.JsonNode
asBoolean, asBoolean, asDouble, asDouble, asInt, asInt, asLong, asLong, asText, bigIntegerValue, binaryValue, booleanValue, canConvertToInt, canConvertToLong, decimalValue, deepCopy, doubleValue, elements, equals, fieldNames, fields, findParents, findValues, findValuesAsText, get, get, has, has, hasNonNull, hasNonNull, intValue, isArray, isBigDecimal, isBigInteger, isBinary, isBoolean, isContainerNode, isDouble, isFloatingPointNumber, isInt, isIntegralNumber, isLong, isMissingNode, isNull, isNumber, isObject, isPojo, isTextual, isValueNode, iterator, longValue, numberValue, path, path, size, textValue, toString, with, withArray

Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - BaseJsonNode
```
protected BaseJsonNode()
```
- Method Detail
  - findValue
```
public JsonNode findValue(String fieldName)
```
    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:
    fieldName - Name of field to look for
    
    Returns:
    Value of first matching node found, if any; null if none
  - findPath
```
public final JsonNode findPath(String fieldName)
```
    Description copied from class: JsonNode
    
    Method similar to JsonNode.findValue(java.lang.String), but that will return a "missing node" instead of null if no field is found. Missing node is a specific kind of node for which JsonNode.isMissingNode() returns true; and all value access methods return empty or missing value.
    
    Specified by:
    
    findPath in class JsonNode
    
    Parameters:
    fieldName - Name of field to look for
    
    Returns:
    Value of first matching node found; or if not found, a "missing node" (non-null instance that has no value)
  - findParent
```
public ObjectNode findParent(String fieldName)
```
    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:
    fieldName - Name of field to look for
    
    Returns:
    Value of first matching node found, if any; null if none
  - findValues
```
public List<JsonNode> findValues(String fieldName,
                        List<JsonNode> foundSoFar)
```
    Specified by:
    
    findValues in class JsonNode
  - findValuesAsText
```
public List<String> findValuesAsText(String fieldName,
                            List<String> foundSoFar)
```
    Specified by:
    
    findValuesAsText in class JsonNode
  - findParents
```
public List<JsonNode> findParents(String fieldName,
                         List<JsonNode> foundSoFar)
```
    Specified by:
    
    findParents in class JsonNode
  - traverse
```
public JsonParser traverse()
```
    Description copied from class: JsonNode
    
    Method for constructing a JsonParser instance for iterating over contents of the tree that this node is root of. Functionally equivalent to first serializing tree using ObjectCodec and then re-parsing but more efficient.
    
    Specified by:
    
    traverse in interface TreeNode
    
    Specified by:
    
    traverse in class JsonNode
  - asToken
```
public abstract JsonToken asToken()
```
    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 JsonNode
  - numberType
```
public JsonParser.NumberType numberType()
```
    Returns code that identifies type of underlying numeric value, if (and only if) node is a number node.
    
    Specified by:
    
    numberType in interface TreeNode
    
    Specified by:
    
    numberType in class JsonNode
    
    Returns:
    Type of number contained, if any; or null if node does not contain numeric value.
  - serialize
```
public abstract void serialize(JsonGenerator jgen,
             SerializerProvider provider)
                        throws IOException,
                               JsonProcessingException
```
    Method called to serialize node instances using given generator.
    
    Specified by:
    
    serialize in interface JsonSerializable
    
    Throws:
    
    IOException
    
    JsonProcessingException
  - serializeWithType
```
public abstract void serializeWithType(JsonGenerator jgen,
                     SerializerProvider provider,
                     TypeSerializer typeSer)
                                throws IOException,
                                       JsonProcessingException
```
    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
    
    Throws:
    
    IOException
    
    JsonProcessingException

Class BaseJsonNode

Field Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

BaseJsonNode

Method Detail

findValue

findPath

findParent

findValues

findValuesAsText

findParents

traverse

asToken

numberType

serialize

serializeWithType