Json Data Objects

This Delphi unit contains a JSON parser that supports Delphi 2009-XE7 and the platforms Win32, Win64 and ARM Android (MacOS and iOS may work).

Clone with GIT

> git clone git@github.com:ahausladen/JsonDataObjects.git

or

> git clone https://github.com/ahausladen/JsonDataObjects.git

This will get you the Json Data Objects repository.

How to install

1. Clone the JsonDataObjects repository
2. Add the JsonDataObjects.pas unit to your project.

Features

• Fast dual JSON parser for parsing UTF8 and UTF16 without conversion
• Automatic creation of arrays and objects
• Easy access mode with implicit operators
• Compact and formatted output modes
• Win32, Win64 and ARM Android support (MacOS and iOS may work)

Usage

Simple example

var
Obj: TJsonObject;
begin
Obj := TJsonObject.Parse('{ "foo": "bar", "array": [ 10, 20 ] }') as TJsonObject;
try
ShowMessage(Obj['foo']);
ShowMessage(IntToStr(Obj['array'].Count));
ShowMessage(IntToStr(Obj['array'].Items[0]));
ShowMessage(IntToStr(Obj['array'].Items[1]));
finally
Obj.Free;
end;
end;

Filling and serializing JSON objects

var
Obj, ChildObj: TJsonObject;
begin
Obj := TJsonObject.Create;
try// easy access
Obj['foo'] := 'bar';
// normal (and faster) access
Obj.S['bar'] := 'foo';
// automatic array creation, Obj is the owner of 'array'
Obj.A['array'].Add(10);
Obj.A['array'].Add(20);
// automatic object creation, 'array' is the owner of ChildObj
ChildObj := Obj.A['array'].AddObject;
ChildObj['value'] := 12.3;
// automatic array creation, ChildObj is the owner of 'subarray'
ChildObj.A['subarray'].Add(100);
ChildObj.A['subarray'].Add(200);
ShowMessage(Obj.ToJSON({Compact:=}False));
finally
Obj.Free;
end;

{
"foo": "bar",
"bar": "foo",
"array": [
10,
20,
{
"value": 12.3,
"subarray": [
100,
200
]
}
]
}

Copying JSON objects with Assign

var
Obj, ClonedObj: TJsonObject;
begin
Obj := TJsonObject.ParseUtf8('{ "foo": [ "bar", {}, null, true, false, { "key": "value" } ] }') as TJsonObject;
try
ClonedObj := TJsonObject.Create;
try// Make a copy of Obj
ClonedObj.Assign(Obj);
ShowMessage(ClonedObj.ToJSON(False));
finally
ClonedObj.Free;
end;
finally
Obj.Free;
end;
end;

{
"foo": [
"bar",
{},
null,
true,
false,
{
"key": "value"
}
]
}