JsonPointer (The Adobe AEM Quickstart and Web Application.)

java.lang.Object
- com.fasterxml.jackson.core.JsonPointer

```
public class JsonPointer
extends java.lang.Object
```
Implementation of JSON Pointer specification. Pointer instances can be used to locate logical JSON nodes for things like tree traversal (see TreeNode.at(com.fasterxml.jackson.core.JsonPointer)). It may be used in future for filtering of streaming JSON content as well (not implemented yet for 2.3).
Instances are fully immutable and can be cached, shared between threads.

Since:

2.3

Property Summary

All Methods Instance Methods Concrete Methods
Type Property and Description

boolean mayMatch

All Methods Instance Methods Concrete Methods
Type	Property and Description
`boolean`	`mayMatch`

Field Summary

Fields
Modifier and Type Field and Description

static char SEPARATOR
Character used to separate segments.

Fields
Modifier and Type	Field and Description
`static char`	`SEPARATOR` Character used to separate segments.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`JsonPointer`	`append(JsonPointer tail)` Mutant factory method that will return `tail` if `this` instance is "empty" pointer, OR `this` instance if `tail` is "empty" pointer, OR Newly constructed `JsonPointer` instance that starts with all segments of `this`, followed by all segments of `tail`.
`static JsonPointer`	`compile(java.lang.String input)` Factory method that parses given input and construct matching pointer instance, if it represents a valid JSON Pointer: if not, a `IllegalArgumentException` is thrown.
`static JsonPointer`	`empty()` Accessor for an "empty" expression, that is, one you can get by calling `compile(java.lang.String)` with "" (empty String).
`boolean`	`equals(java.lang.Object o)`
`static JsonPointer`	`forPath(JsonStreamContext context, boolean includeRoot)` Factory method that will construct a pointer instance that describes path to location given `JsonStreamContext` points to.
`int`	`getMatchingIndex()`
`java.lang.String`	`getMatchingProperty()`
`int`	`hashCode()`
`JsonPointer`	`head()` Accessor for getting a pointer instance that is identical to this instance except that the last segment has been dropped.
`JsonPointer`	`last()` Returns the leaf of current JSON Pointer expression.
`JsonPointer`	`matchElement(int index)`
`boolean`	`matches()`
`boolean`	`matchesElement(int index)` Method that may be called to see if the pointer would match array element (of a JSON Array) with given index.
`boolean`	`matchesProperty(java.lang.String name)` Method that may be called to see if the pointer would match property (of a JSON Object) with given name.
`JsonPointer`	`matchProperty(java.lang.String name)`
`boolean`	`mayMatchElement()`
`boolean`	`mayMatchProperty()`
`JsonPointer`	`tail()` Accessor for getting a "sub-pointer", instance where current segment has been removed and pointer includes rest of segments.
`java.lang.String`	`toString()`
`static JsonPointer`	`valueOf(java.lang.String input)` Alias for `compile(java.lang.String)`; added to make instances automatically deserializable by Jackson databind.

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

- Property Detail
  - mayMatch
```
public boolean mayMatchProperty
```
- Field Detail
  - SEPARATOR
```
public static final char SEPARATOR
```
    Character used to separate segments.
    
    Since:
    
    2.9
    
    See Also:
    
    Constant Field Values
- Method Detail
  - compile
```
public static JsonPointer compile(java.lang.String input)
                           throws java.lang.IllegalArgumentException
```
    Factory method that parses given input and construct matching pointer instance, if it represents a valid JSON Pointer: if not, a IllegalArgumentException is thrown.
    
    Throws:
    
    java.lang.IllegalArgumentException - Thrown if the input does not present a valid JSON Pointer expression: currently the only such expression is one that does NOT start with a slash ('/').
  - valueOf
```
public static JsonPointer valueOf(java.lang.String input)
```
    Alias for compile(java.lang.String); added to make instances automatically deserializable by Jackson databind.
  - empty
```
public static JsonPointer empty()
```
    Accessor for an "empty" expression, that is, one you can get by calling compile(java.lang.String) with "" (empty String).
    NOTE: this is different from expression for "/" which would instead match Object node property with empty String ("") as name.
    
    Since:
    
    2.10
  - forPath
```
public static JsonPointer forPath(JsonStreamContext context,
                                  boolean includeRoot)
```
    Factory method that will construct a pointer instance that describes path to location given JsonStreamContext points to.
    
    Parameters:
    
    context - Context to build pointer expression fot
    
    includeRoot - Whether to include number offset for virtual "root context" or not.
    
    Since:
    
    2.9
  - matches
```
public boolean matches()
```
  - getMatchingProperty
```
public java.lang.String getMatchingProperty()
```
  - getMatchingIndex
```
public int getMatchingIndex()
```
  - mayMatchProperty
```
public boolean mayMatchProperty()
```
  - mayMatchElement
```
public boolean mayMatchElement()
```
    Returns:
    
    True if the root selector matches element index (that is, could match an element of JSON Array node)
  - last
```
public JsonPointer last()
```
    Returns the leaf of current JSON Pointer expression. Leaf is the last non-null segment of current JSON Pointer.
    
    Since:
    
    2.5
  - append
```
public JsonPointer append(JsonPointer tail)
```
    Mutant factory method that will return
    - `tail` if `this` instance is "empty" pointer, OR
    - `this` instance if `tail` is "empty" pointer, OR
    - Newly constructed JsonPointer instance that starts with all segments of `this`, followed by all segments of `tail`.
    Parameters:
    
    tail - JsonPointer instance to append to this one, to create a new pointer instance
    
    Returns:
    
    Either `this` instance, `tail`, or a newly created combination, as per description above.
  - matchesProperty
```
public boolean matchesProperty(java.lang.String name)
```
    Method that may be called to see if the pointer would match property (of a JSON Object) with given name.
    
    Since:
    
    2.5
  - matchProperty
```
public JsonPointer matchProperty(java.lang.String name)
```
  - matchesElement
```
public boolean matchesElement(int index)
```
    Method that may be called to see if the pointer would match array element (of a JSON Array) with given index.
    
    Since:
    
    2.5
  - matchElement
```
public JsonPointer matchElement(int index)
```
    Since:
    
    2.6
  - tail
```
public JsonPointer tail()
```
    Accessor for getting a "sub-pointer", instance where current segment has been removed and pointer includes rest of segments. For matching state, will return null.
  - head
```
public JsonPointer head()
```
    Accessor for getting a pointer instance that is identical to this instance except that the last segment has been dropped. For example, for JSON Point "/root/branch/leaf", this method would return pointer "/root/branch" (compared to tail() that would return "/branch/leaf"). For leaf
    
    Since:
    
    2.5
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object o)
```
    Overrides:
    
    equals in class java.lang.Object

Class JsonPointer

Property Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Property Detail

mayMatch

Field Detail

SEPARATOR

Method Detail

compile

valueOf

empty

forPath

matches

getMatchingProperty

getMatchingIndex

mayMatchProperty

mayMatchElement

last

append

matchesProperty

matchProperty

matchesElement

matchElement

tail

head

toString

hashCode

equals