Package io.trino.parquet

Class AbstractParquetDataSource

java.lang.Object

io.trino.parquet.AbstractParquetDataSource

All Implemented Interfaces:

ParquetDataSource, Closeable, AutoCloseable

public abstract class AbstractParquetDataSource
extends Object
implements ParquetDataSource

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractParquetDataSource(ParquetDataSourceId id, long estimatedSize, ParquetReaderOptions options)

Method Summary

Modifier and Type	Method	Description
final long	getEstimatedSize()
ParquetDataSourceId	getId()
final long	getReadBytes()
final long	getReadTimeNanos()
<K> com.google.common.collect.ListMultimap<K,ChunkReader>	planChunksRead(com.google.common.collect.ListMultimap<K,DiskRange> diskRanges, AggregatedMemoryContext memoryContext)
final <K> Map<K,ChunkedInputStream>	planRead(com.google.common.collect.ListMultimap<K,DiskRange> diskRanges, AggregatedMemoryContext memoryContext)
final io.airlift.slice.Slice	readFully(long position, int length)
protected abstract void	readInternal(long position, byte[] buffer, int bufferOffset, int bufferLength)
io.airlift.slice.Slice	readTail(int length)
protected io.airlift.slice.Slice	readTailInternal(int length)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.trino.parquet.ParquetDataSource

close

Constructor Details

AbstractParquetDataSource

protected AbstractParquetDataSource(ParquetDataSourceId id,
 long estimatedSize,
 ParquetReaderOptions options)

Method Details

readTailInternal

protected io.airlift.slice.Slice readTailInternal(int length)
                                           throws IOException

Throws:

IOException

readInternal

protected abstract void readInternal(long position,
 byte[] buffer,
 int bufferOffset,
 int bufferLength)
                              throws IOException

Throws:

IOException

getId

public ParquetDataSourceId getId()

Specified by:

getId in interface ParquetDataSource

getReadBytes

public final long getReadBytes()

Specified by:

getReadBytes in interface ParquetDataSource

getReadTimeNanos

public final long getReadTimeNanos()

Specified by:

getReadTimeNanos in interface ParquetDataSource

getEstimatedSize

public final long getEstimatedSize()

Specified by:

getEstimatedSize in interface ParquetDataSource

readTail

public io.airlift.slice.Slice readTail(int length)
                                throws IOException

Specified by:

readTail in interface ParquetDataSource

Throws:

IOException

readFully

public final io.airlift.slice.Slice readFully(long position,
 int length)
                                       throws IOException

Specified by:

readFully in interface ParquetDataSource

Throws:

IOException

planRead

public final <K> Map<K,ChunkedInputStream> planRead(com.google.common.collect.ListMultimap<K,DiskRange> diskRanges,
 AggregatedMemoryContext memoryContext)

Specified by:

planRead in interface ParquetDataSource

planChunksRead

public <K>
com.google.common.collect.ListMultimap<K,ChunkReader> planChunksRead(com.google.common.collect.ListMultimap<K,DiskRange> diskRanges,
 AggregatedMemoryContext memoryContext)