X++ FormJsonSerializer

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Posted on by Ferhat.S

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Hey,

I have a problem with serializing json string into object.

I have a example class like

[DataContractAttribute]
public class MyObject
{
    boolean myBool=true;
    str     description;


    /// 
    ///
    /// 
    public void new()
    {
    }

    [
        DataMemberAttribute('myBool'),
        AifCollectionTypeAttribute('myBool', Types::Integer),
        AifCollectionTypeAttribute('return', Types::Integer)
    ]
    public boolean parmMyBool(boolean _myBool = myBool)
    {
        
        myBool = _myBool;
        
        return myBool;
    }

    [
        DataMemberAttribute('description'),
        AifCollectionTypeAttribute('description', Types::String),
        AifCollectionTypeAttribute('return', Types::String)
    ]
        public str parmDescription(str _description = description)
    {
        description = _description;
        return description;
    }

}

When i try to serialize

string like

"strjson": "{\"myBool\":false,\"description\":\"desc1234\"}"

the boolean value is not setting. Other hand when i change strjson into "strjson": "{\"myBool\":\"false\",\"description\":\"desc1234\"}" working totaly fine,

I digged into code and found : FormJsonserializer class and method named "deserializeObjectInternal()" at 744

else if (jsonReader.TokenType == Newtonsoft.Json.JsonToken::Boolean ||
    jsonReader.TokenType == Newtonsoft.Json.JsonToken::Date ||
    jsonReader.TokenType == Newtonsoft.Json.JsonToken::Float ||
    jsonReader.TokenType == Newtonsoft.Json.JsonToken::Integer ||
    jsonReader.TokenType == Newtonsoft.Json.JsonToken::String)
{
    // This is the case for basic type values
    if(jsonReader.Value && deserializedObject && currentJsonProperty)
    {
    }
}

jsonReader.Value comes = false but logic operator should be control it has a value or not. How can i fix that issue anyone can help me about it ?

Version : Dyanmics 365 FO

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Martin Dráb 239,998 Most Valuable Professional on at

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When you saying that your version of AX is "current", do you mean Dynamics AX 2012 R3? Or do you actually mean D365FO instead of Dynamics AX?

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Ferhat.S 240 on at

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Hey Martin,

Sorry for missunderstanding.

Dynamics 365 FO

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Martin Dráb 239,998 Most Valuable Professional on at

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Moved to Dynamics 365 Finance forum. Excessive indentation removed from the second code snippet.

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Mariano Gracia on at

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You don't have to specify AifCollectionTypeAttribute for base types like boolean, string, integer, real and so on... remove the entries with AifCollectionTypeAttribute and it should work

[DataContractAttribute] public class MyObject { boolean myBool; str description; ///
/// ///
public void new() { myBool = true; } [ DataMemberAttribute('myBool') ] public boolean parmMyBool(boolean _myBool = myBool) { myBool = _myBool; return myBool; } [ DataMemberAttribute('description') ] public str parmDescription(str _description = description) { description = _description; return description; } }

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Ferhat.S 240 on at

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Hey Mariano,

Thank you for your comment.

But its not working. Still "jsonReader.Value" it has a value and its false(boolean).

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Martin Dráb 239,998 Most Valuable Professional on at

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Can't you simply keep 'false' as the default values of myBool? Then if false is received or myBool isn't included in JSON at all, the contract will contain false, as expected.

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Ferhat.S 240 on at

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Hey Martin,

I might be change the design but its a lot afford. But other hand i tried other things like

[DataContractAttribute] public class MyObject { boolean myBool; str description; int myNumber; ///
/// ///
public void new() { myBool = true; myNumber = 1; } [ DataMemberAttribute('myBool') ] public boolean parmMyBool(boolean _myBool = myBool) { myBool = _myBool; return myBool; } [ DataMemberAttribute('description') ] public str parmDescription(str _description = description) { description = _description; return description; } [ DataMemberAttribute('myNumber') ] public int parmMyNumber(int _myNumber = myNumber) { myNumber = _myNumber; return myNumber; } }

also we cant set myNumber value to "0" due to same issue.

I found a a bit weired way to make it work but its not feels safe.

[ExtensionOf(classStr(FormJsonSerializer))] final class MyFormJsonSerializer_Extension { public static Object deserializeObject(ClassId _objectTypeId, str _serializedValue) { Object deserializedObject; _serializedValue = strReplace(_serializedValue,":false",':"false"'); _serializedValue = strReplace(_serializedValue,":false,",':"false",'); deserializedObject = next deserializeObject(_objectTypeId,_serializedValue); return deserializedObject; } }

Is that make a sense copying full Form JsonSerializer class into custom class and change code ?

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