com.facebook.presto.parquet.reader

Class ParquetColumnChunk

java.lang.Object

com.facebook.presto.parquet.reader.ParquetColumnChunk

All Implemented Interfaces:

Closeable, AutoCloseable

public class ParquetColumnChunk
extends Object
implements Closeable

Constructor Summary

Constructors

Constructor and Description
ParquetColumnChunk(ColumnChunkDescriptor descriptor, com.facebook.presto.parquet.reader.ParquetColumnChunk.ColumnChunkBufferedInputStream stream, Optional<org.apache.parquet.internal.column.columnindex.OffsetIndex> offsetIndex, LocalMemoryContext memoryContext)

Method Summary

Modifier and Type	Method and Description
PageReader	buildPageReader(Optional<org.apache.parquet.crypto.InternalFileDecryptor> fileDecryptor, int rowGroupOrdinal, int columnOrdinal)
void	close()
ColumnChunkDescriptor	getDescriptor()
long	getRetainedSizeInBytes()
protected org.apache.parquet.format.PageHeader	readPageHeader(org.apache.parquet.format.BlockCipher.Decryptor headerBlockDecryptor, byte[] pageHeaderAAD)

Methods inherited from class java.lang.Object

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

Constructor Detail

ParquetColumnChunk

public ParquetColumnChunk(ColumnChunkDescriptor descriptor,
                          com.facebook.presto.parquet.reader.ParquetColumnChunk.ColumnChunkBufferedInputStream stream,
                          Optional<org.apache.parquet.internal.column.columnindex.OffsetIndex> offsetIndex,
                          LocalMemoryContext memoryContext)

Method Detail

getDescriptor

public ColumnChunkDescriptor getDescriptor()

readPageHeader

protected org.apache.parquet.format.PageHeader readPageHeader(org.apache.parquet.format.BlockCipher.Decryptor headerBlockDecryptor,
                                                              byte[] pageHeaderAAD)
                                                       throws IOException

Throws:

IOException

buildPageReader

public PageReader buildPageReader(Optional<org.apache.parquet.crypto.InternalFileDecryptor> fileDecryptor,
                                  int rowGroupOrdinal,
                                  int columnOrdinal)
                           throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

getRetainedSizeInBytes

public long getRetainedSizeInBytes()