System.JSON.TJSONPathParser.Create
Delphi
constructor Create(const APath: string);
C++
__fastcall TJSONPathParser(const System::UnicodeString APath);
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
constructor | public | System.JSON.pas System.JSON.hpp |
System.JSON | TJSONPathParser |
Description
Creates an instance of TJSONPathParser to iterate through the elements of the specified JSON path.
Supported JSON Path Syntax
TJSONPathParser implements a subset of the JSON path specification defined by Stefan Göessner. Specifically, supported elements are:
- Child operators for objects:
- Use
.
to access object properties that do not contain a dot in their name. For example, useroot.child
to access thechild
property of theroot
object. - Use
[]
to access object properties that do contain a quoting character in their name. For example, useroot['child.name']
orroot["child.name"]
to access thechild.name
property of theroot
object.
- Use
- Subscript operator (
[]
) for arrays. For example, useroot[0]
to access the first item of theroot
array.
These operators do not support special expressions, they only support actual values (object properties or array indexes).