GH-37049: [MATLAB] Update feather Reader and Writer objects to wo…

…rk directly with `arrow.tabular.RecordBatch`s instead of MATLAB `table`s (#37052)

### Rationale for this change

After thinking about how to re-implement `featherread` and `featherwrite`, we realized it would be better if the `Reader` and `Writer` classes worked directly with `arrow.tabular.RecordBatch`s instead of MATLAB `table`s. 

### What changes are included in this PR?

1. Updated `read` method of `arrow.internal.io.feather.Reader` to return an `arrow.tabular.RecordBatch` rather than a MATLAB `table`.
2. Updated `write` method of `arrow.internal.io.feather.Writer` to accept an `arrow.tabular.RecordBatch` rather than a MATLAB `table`.

### Are these changes tested?

Yes.

1. Updated `feather/tRoundTrip.m` to reflect the changes to the `Reader` and `Writer` classes.

### Are there any user-facing changes?

1. No

These are internal APIs.
* Closes: #37049

Authored-by: Kevin Gurney <kgurney@mathworks.com>
Signed-off-by: Kevin Gurney <kgurney@mathworks.com>

matlab/src/matlab/+arrow/+internal/+io/+feather/Reader.m

@@ -36,11 +36,10 @@
  obj.Proxy = arrow.internal.proxy.create("arrow.io.feather.proxy.Reader", args);
  end
 
- function T = read(obj)
+ function recordBatch = read(obj)
  recordBatchProxyID = obj.Proxy.read();
  proxy = libmexclass.proxy.Proxy(Name="arrow.tabular.proxy.RecordBatch", ID=recordBatchProxyID);
  recordBatch = arrow.tabular.RecordBatch(proxy);
- T = recordBatch.toMATLAB();
  end
 
  function filename = get.Filename(obj)

matlab/src/matlab/+arrow/+internal/+io/+feather/Writer.m

@@ -35,9 +35,8 @@
  obj.Proxy = arrow.internal.proxy.create(proxyName, args);
  end
 
- function write(obj, T)
- rb = arrow.recordbatch(T);
- args = struct(RecordBatchProxyID=rb.Proxy.ID);
+ function write(obj, recordBatch)
+ args = struct(RecordBatchProxyID=recordBatch.Proxy.ID);
  obj.Proxy.write(args);
  end
 

matlab/src/matlab/featherwrite.m

@@ -28,6 +28,7 @@ function featherwrite(filename, t)
  t table
  end
 
+ recordBatch = arrow.recordbatch(t);
  writer = arrow.internal.io.feather.Writer(filename);
- writer.write(t);
+ writer.write(recordBatch);
 end

matlab/test/arrow/io/feather/tRoundTrip.m

@@ -31,27 +31,27 @@ function addFeatherFunctionsToMATLABPath(testCase)
  methods(Test)
  function Basic(testCase)
  import matlab.unittest.fixtures.TemporaryFolderFixture
-
+ import arrow.internal.io.feather.*
+
  fixture = testCase.applyFixture(TemporaryFolderFixture);
  filename = fullfile(fixture.Folder, "temp.feather");
 
  DoubleVar = [10; 20; 30; 40];
  SingleVar = single([10; 15; 20; 25]);
- tWrite = table(DoubleVar, SingleVar);
-
- featherwrite(tWrite, filename);
- tRead = featherread(filename);
- testCase.verifyEqual(tWrite, tRead);
+
+ tableWrite = table(DoubleVar, SingleVar);
+ recordBatchWrite = arrow.recordbatch(tableWrite);
+
+ writer = Writer(filename);
+ writer.write(recordBatchWrite);
+
+ reader = arrow.internal.io.feather.Reader(filename);
+ recordBatchRead = reader.read();
+
+ tableRead = table(recordBatchRead);
+
+ testCase.verifyEqual(tableWrite, tableRead);
  end
  end
-end
-
-function featherwrite(T, filename)
- writer = arrow.internal.io.feather.Writer(filename);
- writer.write(T);
-end
 
-function T = featherread(filename)
- reader = arrow.internal.io.feather.Reader(filename);
- T = reader.read();
 end