Android Question How can I read some properties from a variable?

[Myr0n]

I am trying to guess how to read some properties from a variable.

My code is

    Dim db As JackcessDatabase
    db.Open(File.DirRootExternal & "/Northwind.mdb")
    Dim Table As JackcessTable
    Table.Initialize(db.GetTable("FieldTypes"))
    Table.Reset

The properties that I want to read are from the variable Table, like the screenshot, and I am interesting in one of those properties, that is highlighted on the screenshot.
Could you help me please.

Thank you so much.

 

[Erel]

I guess that the library doesn't expose this property.
You will need to use Reflection to get this value. It is not so simple in this case.

 

[Myr0n]

Ok, thank you Erel,
Before to post this message I tried with JavaObject but I did not have good results.
I tried with the actual wrapped library Jackcess but the problem that I found is that there is not include a method getColumns() that exists in java.

I tried with
Dim JO as JavaObject
Log(jo.RunMethod("getcolumns",Array As Object("")))

the previous said code gave the error:
java.lang.RuntimeException: Method: getcolumns not found in: anywheresoftware.b4a.objects.JackcessDatabase$JackcessTable

and the next one,
Log(jo.GetField("_columns"))

said:
java.lang.RuntimeException: Field: _columns not found in: anywheresoftware.b4a.objects.JackcessDatabase$JackcessTable

anyone has a similar code where I can do some test I figure out, please.

Thank you

 

[Erel]

Try to use Reflection library instead. JavaObject only allows you to access public fields and methods. These fields are probably private.

 

[Myr0n]

Thank you Erel, I start working on it.