Package io.trino.orc.stream

Class AbstractDiskOrcDataReader

java.lang.Object

io.trino.orc.stream.AbstractDiskOrcDataReader

All Implemented Interfaces:

OrcDataReader

public abstract class AbstractDiskOrcDataReader
extends Object
implements OrcDataReader

Constructor Summary

Constructors

Constructor	Description
AbstractDiskOrcDataReader(OrcDataSourceId orcDataSourceId, int dataSize, int bufferSize)

Method Summary

Modifier and Type	Method	Description
int	getMaxBufferSize()	Maximum size of the buffer returned from OrcDataReader.seekBuffer(int).
OrcDataSourceId	getOrcDataSourceId()
long	getRetainedSize()	Gets the memory size of this instance.
int	getSize()	Total size of the data that can be accessed with OrcDataReader.seekBuffer(int).
abstract void	read(long position, byte[] buffer, int bufferOffset, int length)
io.airlift.slice.Slice	seekBuffer(int newPosition)	Returns a buffer of the data starting at the specified position.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractDiskOrcDataReader

public AbstractDiskOrcDataReader(OrcDataSourceId orcDataSourceId,
                                 int dataSize,
                                 int bufferSize)

Method Detail

getOrcDataSourceId

public final OrcDataSourceId getOrcDataSourceId()

Specified by:

getOrcDataSourceId in interface OrcDataReader

getRetainedSize

public long getRetainedSize()

Description copied from interface: OrcDataReader

Gets the memory size of this instance.

Specified by:

getRetainedSize in interface OrcDataReader

getSize

public final int getSize()

Description copied from interface: OrcDataReader

Total size of the data that can be accessed with OrcDataReader.seekBuffer(int).

Specified by:

getSize in interface OrcDataReader

getMaxBufferSize

public final int getMaxBufferSize()

Description copied from interface: OrcDataReader

Maximum size of the buffer returned from OrcDataReader.seekBuffer(int).

Specified by:

getMaxBufferSize in interface OrcDataReader

seekBuffer

public final io.airlift.slice.Slice seekBuffer(int newPosition)
                                        throws IOException

Description copied from interface: OrcDataReader

Returns a buffer of the data starting at the specified position. This will return a buffer of OrcDataReader.getMaxBufferSize(), unless near the end of the data.

Specified by:

seekBuffer in interface OrcDataReader

Throws:

IOException

read

public abstract void read(long position,
                          byte[] buffer,
                          int bufferOffset,
                          int length)
                   throws IOException

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object