domhk: Taking JSON input with D365 service and deserialize into contract class

[Blog bot]

Источник: https://domhk.blogspot.com/2021/12/t...rvice-and.html
==============

Recently I wanted to create a custom serivce in D365 taking in a JSON input. I did my usual google search but ended up needing additional trial and error to complete the use case. Here I'll share the solution I have..

Firstly, create a contract class which represent the a Json object
///
/// The Student Information object contains the Student ID and Name
///
[DataContractAttribute]
class StudentInfoContract
{
str studentId;
str studentName;

[DataMemberAttribute("Student Id")]
public str parmStudentId(str _studentId = studentId)
{
studentId = _studentId;

return studentId;
}

[DataMemberAttribute("Student Name")]
public str parmStudentName(str _studentName = studentName)
{
studentName = _studentName;

return studentName;
}

}

Then, in the service contract class, define a List of Str which will take in the Json
///
/// Contains a list of students
///
[DataContractAttribute]
class StudentsContract
{
List studentList = new List(Types::String);

[
DataMemberAttribute("Student list"),
DataCollectionAttribute(Types::Class, classStr(StudentInfoContract))
]
public List parmStudentList(List _studentList = studentList)
{
if (!prmIsDefault(_studentList))
{
studentList = _studentList;
}

return studentList;
}

}

At run time, when calling code provides a list of Json objects, it'll be come a list of JObjects in X++. We'll loop through the list and use FormDeserializer to deserialize each JObject into a contract instance
List studentList = StudentsContract.parmStudentList();

ListEnumerator enumerator = studentList.getEnumerator();

while (enumerator.moveNext())
{
Newtonsoft.Json.Linq.JObject jObj = enumerator.current();

studentInfoContract = FormJsonSerializer::deserializeObject(classNum(StudentInfoContract),jObj.ToString());

str studentId, studentName;

studentId = studentInfoContract.parmStudentId();
studentName = studentInfoContract.parmStudentName();

Info(strFmt("Studnet # %1: %2", studentId, studentName));
}

In the end it's quite simple, and also no need to create C# class representing the data contract as well.

This posting is provided "AS IS" with no warranties, and confers no rights.

Источник: https://domhk.blogspot.com/2021/12/t...rvice-and.html