com.alibaba.fastjson2

Class JSONPath.PreviousPath

java.lang.Object

com.alibaba.fastjson2.JSONPath

com.alibaba.fastjson2.JSONPath.PreviousPath

Enclosing class:

JSONPath

static final class JSONPath.PreviousPath
extends JSONPath

Represents a previous path reference

Nested Class Summary

Nested classes/interfaces inherited from class com.alibaba.fastjson2.JSONPath

JSONPath.Context, JSONPath.Feature, JSONPath.PreviousPath, JSONPath.RootPath, JSONPath.Sequence

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static JSONPath.PreviousPath	INSTANCE

Fields inherited from class com.alibaba.fastjson2.JSONPath

features, PARSE_CONTEXT, path, readerContext, writerContext

Constructor Summary

Constructors

Constructor and Description
PreviousPath(java.lang.String path)

Method Summary

Modifier and Type	Method and Description
boolean	contains(java.lang.Object rootObject) Checks if the path exists in the object
java.lang.Object	eval(java.lang.Object rootObject) Evaluates the path on the object
java.lang.Object	extract(JSONReader jsonReader) Extracts a value using the provided JSONReader
java.lang.String	extractScalar(JSONReader jsonReader) Extracts a scalar value using the provided JSONReader
JSONPath	getParent() Gets the parent JSONPath of this path
boolean	isPrevious() Checks if this path represents a previous reference
boolean	isRef() Checks if this path is a reference
boolean	remove(java.lang.Object rootObject) Removes a value from the object
void	set(java.lang.Object rootObject, java.lang.Object value) Sets a value in the object
void	set(java.lang.Object rootObject, java.lang.Object value, JSONReader.Feature... readerFeatures) Sets a value in the object with specified reader features
void	setCallback(java.lang.Object rootObject, java.util.function.BiFunction callback) Sets a callback function for the object
void	setInt(java.lang.Object rootObject, int value) Sets an integer value in the object
void	setLong(java.lang.Object rootObject, long value) Sets a long value in the object

Methods inherited from class com.alibaba.fastjson2.JSONPath

arrayAdd, compile, compile, contains, createContext, endsWithFilter, eval, eval, extract, extract, extract, extract, extract, extract, extractInt32, extractInt32Value, extractInt64, extractInt64Value, extractScalar, getReaderContext, getWriterContext, of, of, of, of, of, of, of, of, parseOperator, paths, paths, remove, remove, set, set, setCallback, setCallback, setCallback, setReaderContext, setWriterContext, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

INSTANCE

static final JSONPath.PreviousPath INSTANCE

Constructor Detail

PreviousPath

PreviousPath(java.lang.String path)

Method Detail

isRef

public boolean isRef()

Description copied from class: JSONPath

Checks if this path is a reference

Specified by:

isRef in class JSONPath

Returns:

true if this path is a reference, false otherwise

isPrevious

public boolean isPrevious()

Description copied from class: JSONPath

Checks if this path represents a previous reference

Overrides:

isPrevious in class JSONPath

Returns:

true if this path is a previous reference, false otherwise

contains

public boolean contains(java.lang.Object rootObject)

Description copied from class: JSONPath

Checks if the path exists in the object

Specified by:

contains in class JSONPath

Parameters:

rootObject - the object to check

Returns:

true if the path exists, false otherwise

eval

public java.lang.Object eval(java.lang.Object rootObject)

Description copied from class: JSONPath

Evaluates the path on the object

Specified by:

eval in class JSONPath

Parameters:

rootObject - the object to evaluate

Returns:

the evaluation result

extract

public java.lang.Object extract(JSONReader jsonReader)

Description copied from class: JSONPath

Extracts a value using the provided JSONReader

Specified by:

extract in class JSONPath

Parameters:

jsonReader - the JSONReader to use

Returns:

the extracted value

extractScalar

public java.lang.String extractScalar(JSONReader jsonReader)

Description copied from class: JSONPath

Extracts a scalar value using the provided JSONReader

Specified by:

extractScalar in class JSONPath

Parameters:

jsonReader - the JSONReader to use

Returns:

the extracted scalar value

set

public void set(java.lang.Object rootObject,
                java.lang.Object value)

Description copied from class: JSONPath

Sets a value in the object

Specified by:

set in class JSONPath

Parameters:

rootObject - the object to modify

value - the value to set

set

public void set(java.lang.Object rootObject,
                java.lang.Object value,
                JSONReader.Feature... readerFeatures)

Description copied from class: JSONPath

Sets a value in the object with specified reader features

Specified by:

set in class JSONPath

Parameters:

rootObject - the object to modify

value - the value to set

readerFeatures - the reader features to apply

setCallback

public void setCallback(java.lang.Object rootObject,
                        java.util.function.BiFunction callback)

Description copied from class: JSONPath

Sets a callback function for the object

Specified by:

setCallback in class JSONPath

Parameters:

rootObject - the object to modify

callback - the callback function to set

getParent

public JSONPath getParent()

Description copied from class: JSONPath

Gets the parent JSONPath of this path

Specified by:

getParent in class JSONPath

Returns:

the parent JSONPath, or null if this is the root path

setInt

public void setInt(java.lang.Object rootObject,
                   int value)

Description copied from class: JSONPath

Sets an integer value in the object

Specified by:

setInt in class JSONPath

Parameters:

rootObject - the object to modify

value - the integer value to set

setLong

public void setLong(java.lang.Object rootObject,
                    long value)

Description copied from class: JSONPath

Sets a long value in the object

Specified by:

setLong in class JSONPath

Parameters:

rootObject - the object to modify

value - the long value to set

remove

public boolean remove(java.lang.Object rootObject)

Description copied from class: JSONPath

Removes a value from the object

Specified by:

remove in class JSONPath

Parameters:

rootObject - the object to modify

Returns:

true if removal was successful, false otherwise