com.facebook.presto.rcfile

Class RcFileReader

java.lang.Object

com.facebook.presto.rcfile.RcFileReader

All Implemented Interfaces:

Closeable, AutoCloseable

public class RcFileReader
extends Object
implements Closeable

Constructor Summary

Constructors

Constructor and Description
RcFileReader(RcFileDataSource dataSource, RcFileEncoding encoding, Map<Integer,com.facebook.presto.common.type.Type> readColumns, RcFileCodecFactory codecFactory, long offset, long length, io.airlift.units.DataSize bufferSize)

Method Summary

Modifier and Type	Method and Description
int	advance()
void	close()
long	getBytesRead()
int	getColumnCount()
RcFileDataSourceId	getId()
long	getLength()
Map<String,String>	getMetadata()
long	getReadTimeNanos()
long	getRowsRead()
io.airlift.slice.Slice	getSync()
byte	getVersion()
com.facebook.presto.common.block.Block	readBlock(int columnIndex)

Methods inherited from class java.lang.Object

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

Constructor Detail

RcFileReader

public RcFileReader(RcFileDataSource dataSource,
                    RcFileEncoding encoding,
                    Map<Integer,com.facebook.presto.common.type.Type> readColumns,
                    RcFileCodecFactory codecFactory,
                    long offset,
                    long length,
                    io.airlift.units.DataSize bufferSize)
             throws IOException

Throws:

IOException

Method Detail

getVersion

public byte getVersion()

getMetadata

public Map<String,String> getMetadata()

getColumnCount

public int getColumnCount()

getLength

public long getLength()

getBytesRead

public long getBytesRead()

getRowsRead

public long getRowsRead()

getReadTimeNanos

public long getReadTimeNanos()

getSync

public io.airlift.slice.Slice getSync()

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

advance

public int advance()
            throws IOException

Throws:

IOException

readBlock

public com.facebook.presto.common.block.Block readBlock(int columnIndex)
                                                 throws IOException

Throws:

IOException

getId

public RcFileDataSourceId getId()