[Overview][Constants][Types][Classes][Procedures and functions][Index] Reference for unit 'fpjson' (#fcl)

TJSONData

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Base (abstract) object for all JSON based data types

Declaration

Source position: fpjson.pp line 99

type TJSONData = class(TObject)

public

  class function JSONType; virtual;

  

The native JSON data type represented by this object

  property CompressedJSON: Boolean; [rw]

  

Compress JSON - skip whitespace

  constructor Create; virtual;

  

Create a new instance of TJSONData.

  procedure Clear; virtual; abstract;

  

Clear the raw value of this data object

  procedure DumpJSON();

  

Fast, memory efficient dump of JSON in stream

  function GetEnumerator; virtual;

  

Return an enumerator for the data

  function FindPath();

  

Find data by name

  function GetPath();

  

Get data by name

  function Clone; virtual; abstract;

  

Duplicate the value of the JSON data

  function FormatJSON();

  

Return a formatted JSON representation of the data.

  property Count: Integer; [r]

  

Number of sub-items for this data element

  property Items []: TJSONData; [rw]

  

Indexed access to sub-items

  property Value: TJSONVariant; [rw]

  

The value of this data object as a variant.

  property AsString: TJSONStringType; [rw]

  

Access the raw JSON value as a string

  property AsFloat: TJSONFloat; [rw]

  

Access the raw JSON value as a float

  property AsInteger: Integer; [rw]

  

Access the raw JSON value as an 32-bit integer

  property AsBoolean: Boolean; [rw]

  

Access the raw JSON value as a boolean

  property IsNull: Boolean; [r]

  

Is the data a null value ?

  property AsJSON: TJSONStringType; [r]

  

Return a JSON representation of the value

end;

Inheritance

TJSONData

  

Base (abstract) object for all JSON based data types

|

TObject

Description

TJSONData is an abstract class which introduces all properties and methods needed to work with JSON-based data. It should never be instantiated. Based on the type of data that must be represented one of the following descendents must be instantiated instead.

Numbers
must be represented using one of TJSONIntegerNumber, TJSONFloatNumber or TJSONInt64Number, depending on the type of the number.
Strings
can be represented with TJSONString.
Boolean
can be represented with TJSONBoolean.
null
is supported using TJSONNull
Array
data can be represented using TJSONArray
Object
data can be supported using TJSONObject

See also

TJSONIntegerNumber

  

Class to represent 32-bit integer JSON data.

TJSONString

  

Class to represent string JSON data.

TJSONBoolean

  

Class to represent boolean JSON data.

TJSONNull

  

Class to represent boolean JSON data.

TJSONArray

  

Class of TJSONArray

TJSONObject

  

Class of TJSONObject


Documentation generated on: Jun 22 2020