```
public interface JsonPointer
```
Implementation of RFC6901 Json Pointers.

Author:

Francesco Guardiani @slinkydeveloper

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`JsonPointer`	`append(int index)`	Append the `index` as reference token to JsonPointer
`JsonPointer`	`append(JsonPointer pointer)`	Append all tokens of `pointer` to this pointer Note: The base URI of this pointer will remain untouched
`JsonPointer`	`append(String token)`	Append an unescaped `token` to this pointer Note: If you provide escaped path the behaviour is undefined
`JsonPointer`	`append(List<String> tokens)`	Append an unescaped list of `tokens` to JsonPointer Note: If you provide escaped paths the behaviour is undefined
`JsonPointer`	`copy()`	Copy a JsonPointer
`static JsonPointer`	`create()`	Build an empty JsonPointer
`static JsonPointer`	`from(String pointer)`	Build a JsonPointer from a json pointer string
`static JsonPointer`	`fromURI(URI uri)`	Build a JsonPointer from a URI.
`URI`	`getURIWithoutFragment()`	Return the underlying URI without the fragment
`boolean`	`isLocalPointer()`	Return `true` if the pointer is local (URI with only fragment)
`boolean`	`isParent(JsonPointer child)`	Return `true` if this pointer is a parent pointer of `child`.
`boolean`	`isRootPointer()`	Return `true` if the pointer is a root pointer
`JsonPointer`	`parent()`	Remove last reference token of this pointer
`default Object`	`query(Object objectToQuery, JsonPointerIterator iterator)`	Query `objectToQuery` using the provided `JsonPointerIterator`.
`default Object`	`queryJson(Object jsonElement)`	Query `jsonElement`.
`default Object`	`queryJsonOrDefault(Object jsonElement, Object defaultValue)`	Query `jsonElement`.
`Object`	`queryOrDefault(Object objectToQuery, JsonPointerIterator iterator, Object defaultValue)`	Query `objectToQuery` using the provided `JsonPointerIterator`.
`String`	`toString()`	Build a string representation of the JSON Pointer
`URI`	`toURI()`	Build a URI representation of the JSON Pointer
`List<Object>`	`tracedQuery(Object objectToQuery, JsonPointerIterator iterator)`	Query `objectToQuery` tracing each element walked during the query, including the first and the result (if any). The first element of the list is objectToQuery and the last is the result, or the element before the first null was encountered
`Object`	`write(Object objectToWrite, JsonPointerIterator iterator, Object newElement, boolean createOnMissing)`	Write `newElement` in `objectToWrite` using this pointer.
`default Object`	`writeJson(Object jsonElement, Object newElement)`	Write `newElement` in `jsonElement` using this pointer.
`default Object`	`writeJson(Object jsonElement, Object newElement, boolean createOnMissing)`	Write `newElement` in `jsonElement` using this pointer.

- Method Detail
  - isRootPointer
```
boolean isRootPointer()
```
    Return true if the pointer is a root pointer
  - isLocalPointer
```
boolean isLocalPointer()
```
    Return true if the pointer is local (URI with only fragment)
  - isParent
```
boolean isParent(JsonPointer child)
```
    Return true if this pointer is a parent pointer of child.
    For instance "/properties" pointer is parent pointer of "/properties/parent"
    
    Parameters:
    
    child -
  - toString
```
String toString()
```
    Build a string representation of the JSON Pointer
    
    Overrides:
    
    toString in class Object
  - toURI
```
URI toURI()
```
    Build a URI representation of the JSON Pointer
  - getURIWithoutFragment
```
URI getURIWithoutFragment()
```
    Return the underlying URI without the fragment
  - append
```
JsonPointer append(String token)
```
    Append an unescaped token to this pointer
    Note: If you provide escaped path the behaviour is undefined
    
    Parameters:
    
    token - the unescaped reference token
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - append
```
JsonPointer append(int index)
```
    Append the index as reference token to JsonPointer
    
    Parameters:
    
    index -
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - append
```
JsonPointer append(List<String> tokens)
```
    Append an unescaped list of tokens to JsonPointer
    Note: If you provide escaped paths the behaviour is undefined
    
    Parameters:
    
    tokens - unescaped reference tokens
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - append
```
JsonPointer append(JsonPointer pointer)
```
    Append all tokens of pointer to this pointer
    Note: The base URI of this pointer will remain untouched
    
    Parameters:
    
    pointer - other pointer
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - parent
```
JsonPointer parent()
```
    Remove last reference token of this pointer
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - query
```
default Object query(Object objectToQuery,
                     JsonPointerIterator iterator)
```
    Query objectToQuery using the provided JsonPointerIterator.
    If you need to query Vert.x json data structures, use queryJson(Object)
    Note: if this pointer is a root pointer, this function returns the provided object
    
    Parameters:
    
    objectToQuery - the object to query
    
    iterator - the json pointer iterator that provides the logic to access to the objectToQuery
    
    Returns:
    
    null if pointer points to not existing value, otherwise the requested value
  - queryOrDefault
```
Object queryOrDefault(Object objectToQuery,
                      JsonPointerIterator iterator,
                      Object defaultValue)
```
    Query objectToQuery using the provided JsonPointerIterator. If the query result is null, returns the default.
    If you need to query Vert.x json data structures, use queryJsonOrDefault(Object, Object)
    Note: if this pointer is a root pointer, this function returns the provided object
    
    Parameters:
    
    objectToQuery - the object to query
    
    iterator - the json pointer iterator that provides the logic to access to the objectToQuery
    
    defaultValue - default value if query result is null
    
    Returns:
    
    null if pointer points to not existing value, otherwise the requested value
  - queryJson
```
default Object queryJson(Object jsonElement)
```
    Query jsonElement.
    Note: if this pointer is a root pointer, this function returns the provided json element
    
    Parameters:
    
    jsonElement - the json element to query
    
    Returns:
    
    null if pointer points to not existing value, otherwise the requested value
  - queryJsonOrDefault
```
default Object queryJsonOrDefault(Object jsonElement,
                                  Object defaultValue)
```
    Query jsonElement. If the query result is null, returns the default.
    Note: if this pointer is a root pointer, this function returns the provided object
    
    Parameters:
    
    jsonElement - the json element to query
    
    defaultValue - default value if query result is null
    
    Returns:
    
    null if pointer points to not existing value, otherwise the requested value
  - tracedQuery
```
List<Object> tracedQuery(Object objectToQuery,
                         JsonPointerIterator iterator)
```
    Query objectToQuery tracing each element walked during the query, including the first and the result (if any).
    The first element of the list is objectToQuery and the last is the result, or the element before the first null was encountered
    
    Parameters:
    
    objectToQuery - the object to query
    
    iterator - the json pointer iterator that provides the logic to access to the objectToQuery
    
    Returns:
    
    the stream of walked elements
  - write
```
Object write(Object objectToWrite,
             JsonPointerIterator iterator,
             Object newElement,
             boolean createOnMissing)
```
    Write newElement in objectToWrite using this pointer. The path token "-" is handled as append to end of array
    If you need to write in Vert.x json data structures, use writeJson(Object, Object) (Object)}
    
    Parameters:
    
    objectToWrite - object to write
    
    iterator - the json pointer iterator that provides the logic to access to the objectToMutate
    
    newElement - object to insert
    
    createOnMissing - create objects when missing a object key or an array index
    
    Returns:
    
    a reference to objectToWrite if the write was completed, a reference to newElement if the pointer is a root pointer, null if the write failed
  - writeJson
```
default Object writeJson(Object jsonElement,
                         Object newElement)
```
    Write newElement in jsonElement using this pointer. The path token "-" is handled as append to end of array.
    
    Parameters:
    
    jsonElement - json element to query and write
    
    newElement - json to insert
    
    Returns:
    
    a reference to json if the write was completed, a reference to newElement if the pointer is a root pointer, null if the write failed
  - writeJson
```
default Object writeJson(Object jsonElement,
                         Object newElement,
                         boolean createOnMissing)
```
    Write newElement in jsonElement using this pointer. The path token "-" is handled as append to end of array.
    
    Parameters:
    
    jsonElement - json to query and write
    
    newElement - json to insert
    
    createOnMissing - create JsonObject when missing a object key or an array index
    
    Returns:
    
    a reference to json if the write was completed, a reference to newElement if the pointer is a root pointer, null if the write failed
  - copy
```
JsonPointer copy()
```
    Copy a JsonPointer
    
    Returns:
    
    a copy of this pointer
  - create
```
static JsonPointer create()
```
    Build an empty JsonPointer
    
    Returns:
    
    a new empty JsonPointer
  - from
```
static JsonPointer from(String pointer)
```
    Build a JsonPointer from a json pointer string
    
    Parameters:
    
    pointer - the string representing a pointer
    
    Returns:
    
    new instance of JsonPointer
    
    Throws:
    
    IllegalArgumentException - if the pointer provided is not valid
  - fromURI
```
static JsonPointer fromURI(URI uri)
```
    Build a JsonPointer from a URI.
    
    Parameters:
    
    uri - uri representing a json pointer
    
    Returns:
    
    new instance of JsonPointer
    
    Throws:
    
    IllegalArgumentException - if the pointer provided is not valid

Interface JsonPointer

Method Summary

Method Detail

isRootPointer

isLocalPointer

isParent

toString

toURI

getURIWithoutFragment

append

append

append

append

parent

query

queryOrDefault

queryJson

queryJsonOrDefault

tracedQuery

write

writeJson

writeJson

copy

create

from

fromURI