TJSONEventReader¶

Event-based JSON reader that fires events for JSON elements

Declaration¶

Source position: jsonreader.pp line 90

type

  TJSONEventReader = class(TBaseJSONReader)
  public
    procedure Execute;
    property OnNullValue: TNotifyEvent; {rw}
    property OnBooleanValue: TOnJSONBoolean; {rw}
    property OnNumberValue: TOnJSONString; {rw}
    property OnFloatValue: TOnJSONFloat; {rw}
    property OnIntegerValue: TOnJSONInteger; {rw}
    property OnInt64Value: TOnJSONInt64; {rw}
    property OnQWordValue: TOnJSONQWord; {rw}
    property OnStringValue: TOnJSONString; {rw}
    property OnKeyName: TOnJSONKey; {rw}
    property OnStartObject: TNotifyEvent; {rw}
    property OnEndObject: TNotifyEvent; {rw}
    property OnStartArray: TNotifyEvent; {rw}
    property OnEndArray: TNotifyEvent; {rw}
  end;

Inheritance¶

Description¶

TJSONEventReader provides event-based JSON reading functionality. It inherits from TBaseJSONReader and fires specific events when different JSON elements are encountered during parsing. This allows applications to process JSON data using an event-driven approach similar to SAX parsing for XML. Each JSON element type has a corresponding event property that can be assigned to handle the parsed data.

Methods¶

Member	Visibility	Description
Execute	public	Starts the JSON parsing process and fires events

See all Methods

Events¶

Member	Visibility	Description
OnBooleanValue	public	Event fired when a JSON boolean value is encountered
OnEndArray	public	Event fired when a JSON array ends
OnEndObject	public	Event fired when a JSON object ends
OnFloatValue	public	Event fired when a JSON floating-point value is encountered
OnInt64Value	public	Event fired when a JSON 64-bit integer value is encountered
OnIntegerValue	public	Event fired when a JSON integer value is encountered
OnKeyName	public	Event fired when a JSON object key name is encountered
OnNullValue	public	Event fired when a JSON null value is encountered
OnNumberValue	public	Event fired when a JSON number value is encountered
OnQWordValue	public	Event fired when a JSON quadword value is encountered
OnStartArray	public	Event fired when a JSON array begins
OnStartObject	public	Event fired when a JSON object begins
OnStringValue	public	Event fired when a JSON string value is encountered

See all Events

Errors¶

Inherits error handling from TBaseJSONReader. Raises EJSONParser for parsing errors.

Name	Description
TBaseJSONReader	Abstract base class for JSON readers
TJSONConsumerReader	JSON reader that uses an IJSONConsumer for processing