Object Serialization In Delphi

JSON object serializer for Delphi. Here is the second edition of the JSON Serializer library from the Delphi JSON serialization using Rtti article. The updated library is completely Open Source and distributed under the terms of the. Object Serialization In Delphi' title='Object Serialization In Delphi' />GNU Lesser General Public License version 3, GNU General Public License. Now, you can serialize and deserialize arrays and unions of objects of different types, deserialize inherited objects, serialize empty strings and many more. The article includes both the source code of the Json Serializer classes Tcl. Json. Serializer and unit test code that demonstrates how to serialize and deserizlise differrent data types, inlcuding Delphi strings, integers, objects and arrays. Join our Mailing List and stay tuned SUBSCRIBETcl. Json. Serializer utilizes the RTTI library and custom Delphi attributes for linking user defined Delphi objects and properties with the corresponding JSON data parts. Diccionario De Armando Hoyos Pdf Gratis. The updated JSON serializer correctly invokes constructors of serialized objects by requesting RTTI information for object constructors and calling it with the Invoke method. For defining a data type, you need to attach the Tcl. Json. Property. Attribute attribute to the property you want to serialize. DelphiTcl. Test. Object classprivate. FString. Value string FInteger. Object Serialization In Delphi' title='Object Serialization In Delphi' />Value Integer FInt. Array TArraylt Integer publicTcl. Json. Stringstring. Valueproperty String. Value string read FString. Value write FString. Value    Tcl. Json. Ce petit programme permet simplement de transfrer un fichier entre deux machines. Ct client le programme lit un fichier par paquets par. Propertyinteger. Valueproperty Integer. Value Integer read FInteger. Value write FInteger. Value    Tcl. Json. Object Serialization In Delphi' title='Object Serialization In Delphi' />Propertyint. Arrayproperty Int. Array TArraylt Integer read FInt. Array write FInt. Array end 1. Create an instance of data type. Delphiobj Tcl. Test. Object. Create obj. String. Value test obj. Integer. Value 1. Set. Lengthint. Arr, 2 obj. Int. Array int. Arr int. Arr0 1. Arr1 2. Serialize the object to the JSON string. Delphijson Tcl. Json. Serializer. Object. To. Jsonobj Normally, empty and default parameters arent uncluded to JSON strings. But sometimes, software at recipient side requires an empty parameter to be inlcuded. E. g., Dropbox API requires an empty URL parameter to be present in the List. Folder requests when listing the root folder. The new Tcl. Json. Required. Attribute custom attribute allows you to mark the required property when declaring the object type DelphiTcl. Test. Object classprivate. FRequired. String. Value string publicTcl. Json. RequiredTcl. Json. Stringrequired string valueproperty Required. JSON JavaScript Object Notation is a lightweight datainterchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. String. Value string read FRequired. String. Value write FRequired. String. Value end Call to the Tcl. Json. Serializer. Json. To. Object class method and specify both the serializeble data type and the JSON encoded source string. Delphiobj Tcl. Json. Serializer. Json. To. ObjectTcl. Test. Object, json. Etalon as Tcl. Test. Object To deserialize the object instances of inherited types, you need to supply the type of the object being serialized. Usually, a special string property is declared in the basic class. Descendants fill this property with unique type identifier. The JSON serializer provides a special custom attribute for associating the type identifiers with real Delphi types Tcl. Json. Type. Name. Map. Attribute. DelphiTcl. Json. Type. Name. Maptag, child, cl. Json. Serializer. Tests. Tcl. Test. Child. ObjectTcl. Json. Type. Name. Maptag, child. Json. Serializer. Tests. Tcl. Test. Child. ObjectTcl. Test. Base. Object class. Tcl. Json. Stringtagproperty Tag string read FTag write FTag end Tcl. Test. Child. Object class. Tcl. Test. Child. Object class. Tcl. Test. Child. Object. Create begininherited Create Tag child end constructor Tcl. Test. Child. 2Object. Create begininherited Create Tag child. The JSON serializer uses Delphi RTTI for creating serializable objects. It is necessary to specify the unit name together with the object type within the Tcl. Json. Type. Name. Map parameters. Also, Delphi compiler always removes unreferenced types from resulting executable code. So if your data objects are not instantiated in your code, you need to reference its types or use the STRONGLINKTYPES ON compiler directive. A possible solution to this problem can be seen in the How can I make sure RTTI is available for a class without instantiating it article. The declared Tcl. Test. Base. Object type can be used in object properties, arrays and also can be serialized and deserialized as a root object DelphiTcl. Test. Object classprivate. FReference. Object Tcl. Test. Base. Object FObject. Array TArraylt Tcl. Test. Base. Object     procedure Set. Reference. Objectconst Value Tcl. Test. Base. Object procedure Set. Object. Arrayconst Value TArraylt Tcl. Test. Base. Object publicconstructor Create destructor Destroy override    Tcl. Json. Propertyreferenceproperty Reference. Object Tcl. Test. Base. Object read FReference. Middleware Iptv on this page. Object write Set. Reference. Object    Tcl. Json. Propertyarrayproperty Object. Array TArraylt Tcl. Test. Base. Object read FObject. Array write Set. Object. Array end You need to bother about deleting instances of array elements and object references in your code Delphiprocedure Tcl. Test. Object. Set. Reference. Objectconst Value Tcl. Test. Base. Object begin. FReference. Object. Free FReference. Object Value end procedure Tcl. Test. Object. Set. Object. Arrayconst Value TArraylt Tcl. Test. Base. Object var obj TObject beginif FObject. Array lt nil thenfor obj in FObject. Array do obj. Free FObject. Array  Value end constructor Tcl. Test. Object. Create begininherited Create FReference. Object nil FObject. Array   nil end destructor Tcl. Test. Object. Destroy begin. Set. Reference. Objectnil Set. Object. Arraynil inherited end Json Serializer can be used in RAD Studio XE3 and later. If you modify the sources and remove all references to the RAD Studio namespaces in the uses sections, you can use the library in RAD Studio 2. XE and XE2 as well. Download Json Serializer. The library is distributed under the terms of the GNU Lesser General Public License version 3, GNU General Public License. Sergey Shirokov. Clever Components teamwww.