TJsonWriter

Class

type TJsonWriter = class

This class is used to push JSON data into a stream or file without creating an in-memory JSON object.

Methods

constructor Create(Stream: TStream; PrettyPrint: Boolean = True; UseTabChar: Boolean = False; TabSize: Integer = 2; Utf8: Boolean = true);

Creates a TJsonWriter instance that will be writing the JSON data into the Stream. Utf8 determines if the data will be in UTF-8 or wide chars.

constructor Create(const FileName: String; PrettyPrint: Boolean = True; UseTabChar: Boolean = False; TabSize: Integer = 2);

Creates a TJsonWriter instance that will be writing the JSON data into the specified file.

procedure Check;

Checks whether the JSON data was correctly created. Raises an exception if there are unpaired Begin/End Array/Objects or there is no data.

procedure BeginArray;

Starts a new array.

procedure BeginArray(const Name: WideString);

Starts a new array with the specified name.

procedure BeginObject;

Starts a new object.

procedure BeginObject(const Name: WideString);

Starts a new object with the specified name.

procedure EndArray;

Ends the array.

procedure EndObject;

Ends the object.

procedure WriteNull;

procedure WriteNull(const Name: WideString);

procedure Write(Value: Boolean);

procedure Write(const Name: WideString; Value: Boolean);

procedure Write(Value: Double);

procedure Write(const Name: WideString; Value: Double);

procedure Write(const Value: WideString);

procedure Write(const Name: WideString; const Value: WideString);

procedure Write(const Value: TDateTime; Offset: Integer);

procedure Write(const Name: WideString; const Value: TDateTime; Offset: Integer);

Writes the specified value with or without a name, as indicated.

Example |