Having some trouble with my vector in c# (Unity)

[Jobe Lloyd]

I have been trying to serialize and deserialize some test data, but I cant seem to get it to work.  I don't get any errors, but my result is a zero length vector and I am not quite sure what I am doing wrong.  I have been looking through the forums here and the example/tutorial code, but I cant quite seem to figure out my error.  Here is the code simplified:

////Flatbuffer layout

table Foo{

     foo_id:int;

     is_purchasable:bool;

     fooName:string;

}

table Bar{

     data1:int;

     data2:double;

     data3:int;

     data4:long;

}

table StaticData{

     FooVec:[Foo];

     BarVec:[Bar];

}

///C# Code

void FlatBufferSave(List<FooAsAClass> Foos)

    {

        FlatBufferBuilder fbb = new FlatBufferBuilder(1);

        Offset<Foo>[] foosOffset = new Offset<Foo>[Foos.Count];

        for (int i = 0; i < Foos.Count; i++)

        {

            Debug.Log("Adding car: " + i);

            FooAsAClass data = Foos[i];

            //Strings

            StringOffset FooNameOffset = fbb.CreateString(data.DriveType);

            Foo.StartFoo(fbb);

            Foo.AddFooId(fbb, data.FooID);

            Foo.AddIsPurchasable(fbb, data.IsPurchasable);

            Foo.AddFooName(fbb, FooNameOffset);

            var FooOffset = Foo.EndFoo(fbb);

            foosOffset[i] = FooOffset;

        }

        // Pass the foosOffsetarray into the `CreateFooVector()` method to create a FlatBuffer vector.

        VectorOffset foosVectorOffset = StaticData.CreateFooVector(fbb, foosOffset);

        StaticData.StartStaticData(fbb);

        StaticData.AddFooVec(fbb, foosVectorOffset);

        var endStaticData = StaticData.EndStaticData(fbb);

        fbb.Finish(endStaticData.Value);

        var buf = fbb.DataBuffer;

        // Save the data into "SAVE_FILENAME.whatever" file, name doesn't matter obviously

        using (var ms = new MemoryStream(fbb.DataBuffer.Data, fbb.DataBuffer.Position, fbb.Offset))

        {

            File.WriteAllBytes(Application.persistentDataPath + "/" + "SAVE_FILENAME.whatever", ms.ToArray());

        }

    }

void FlatBufferLoad()

    {

        ByteBuffer bb = new ByteBuffer(File.ReadAllBytes("SAVE_FILENAME.whatever"));

        StaticData data = StaticData.GetRootAsStaticData(bb);

        //this is triggered every time

        if(data.FooVecLength == 0)

        {

            Debug.LogWarning("ZERO LENGTH DATA");

        }

    }

[Jobe Lloyd]

And I found my error moments after posting...

Here is the correct code, it was just a file load problem.  I had an old file from earlier on in my development that was getting loaded, so the bug (bad file path) was not throwing an error since there was a zero length file to be loaded.

Hopefully this code will help anyone in the future looking to serialize vectors in C#

        //HERE WAS THE ISSUE, BAD FILE PATH

        ByteBuffer bb = new ByteBuffer(File.ReadAllBytes(Application.persistentDataPath + "/SAVE_FILENAME.whatever"));