How to use TfRecordDataset DatasetToTfRecord tf.io.tfRecordReader

Inizia dagli entry point TfRecordDataset, DatasetToTfRecord e tf.io.tfRecordReader mostrati nell’issue e confronta le relative API Java con l’utilizzo Python richiesto. Il lavoro sarà considerato completato quando sarà disponibile un esempio funzionante di tensorflow-java che legga dati TFRecord e spieghi come utilizzare queste API.

tensorflow-java 0.4
spark 3.1
java 11

Hi :
Now I use tensorflow-java to read tfrecord file ,but can not get the data, and our not have example for it ,the TfRecordDataset DatasetToTfRecord tf.io.tfRecordReader java class have not same api like python ,could we give some example for how to use them. thank

    import org.tensorflow.{Operand, Session,EagerSession}
    import org.tensorflow.op.Ops
    import org.tensorflow.op.data.TfRecordDataset
    import org.tensorflow.op.data.{DatasetToTfRecord, TfRecordDataset}
    val session = EagerSession.create
    val tf = Ops.create(session)
    val  scope = tf.scope()
//    val fileName  =tf.constant( "/Users/zhanghaining/Downloads/tfrecord-kk2-test/")
    val fileName = tf.constant("/Users/zhanghaining/Downloads/BigDL/spark/dl/src/test/resources/tf/mnist_train.tfrecord")
    val compress = tf.constant("")
    val bufferSize = tf.constant(0l)
    val recordDataSet = TfRecordDataset.create(scope,fileName,compress,bufferSize)

    val record = DatasetToTfRecord.create(scope, recordDataSet,fileName,compress)

    val reader =  tf.io.tfRecordReader()

    println(record.op().name() )
    println(record.op().`type`())
    println(recordDataSet.op().numOutputs() )
    println(recordDataSet.asOutput().dataType())