com.aliyun.odps.table.arrow.readers

Class ArrowBatchReusedReader

java.lang.Object

com.aliyun.odps.table.arrow.readers.ArrowBatchReusedReader

All Implemented Interfaces:

ArrowReader, Closeable, AutoCloseable

public class ArrowBatchReusedReader
extends Object
implements ArrowReader

Constructor Summary

Constructors

Constructor and Description
ArrowBatchReusedReader(InputStream is, org.apache.arrow.memory.BufferAllocator allocator)
ArrowBatchReusedReader(InputStream is, org.apache.arrow.memory.BufferAllocator allocator, org.apache.arrow.vector.compression.CompressionCodec.Factory compressionFactory)

Method Summary

Modifier and Type	Method and Description
long	bytesRead() Return the current read bytes.
void	close()
org.apache.arrow.vector.VectorSchemaRoot	getCurrentValue() Return the current arrow batch.
boolean	nextBatch() Proceed to next arrow batch, returns false if there is no more batches.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ArrowBatchReusedReader

public ArrowBatchReusedReader(InputStream is,
                              org.apache.arrow.memory.BufferAllocator allocator)

ArrowBatchReusedReader

public ArrowBatchReusedReader(InputStream is,
                              org.apache.arrow.memory.BufferAllocator allocator,
                              org.apache.arrow.vector.compression.CompressionCodec.Factory compressionFactory)

Method Detail

getCurrentValue

public org.apache.arrow.vector.VectorSchemaRoot getCurrentValue()

Description copied from interface: ArrowReader

Return the current arrow batch. This method should return same value until `nextBatch` is called.

Specified by:

getCurrentValue in interface ArrowReader

nextBatch

public boolean nextBatch()
                  throws IOException

Description copied from interface: ArrowReader

Proceed to next arrow batch, returns false if there is no more batches.

Specified by:

nextBatch in interface ArrowReader

Throws:

IOException - if failure happens during network IO.

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

bytesRead

public long bytesRead()

Description copied from interface: ArrowReader

Return the current read bytes.

Specified by:

bytesRead in interface ArrowReader