Package io.trino.hive.formats.line.sequence

Class SequenceFileReader

java.lang.Object

io.trino.hive.formats.line.sequence.SequenceFileReader

All Implemented Interfaces:

LineReader, Closeable, AutoCloseable

public final class SequenceFileReader
extends Object
implements LineReader

Sequence file reader hard coded the behavior of Hive Sequence file with a Text value class.

Constructor Summary

Constructors

Constructor	Description
SequenceFileReader(TrinoInputFile inputFile, long offset, long length)

Method Summary

Modifier and Type	Method	Description
void	close()
long	getBytesRead()
String	getFileLocation()
String	getKeyClassName()
Map<String,String>	getMetadata()
long	getReadTimeNanos()
long	getRetainedSize()
long	getRowsRead()
io.airlift.slice.Slice	getSync()
String	getValueClassName()
boolean	isClosed()
boolean	readLine(LineBuffer lineBuffer)	Read a line into the buffer.

Methods inherited from class java.lang.Object

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

Constructor Details

SequenceFileReader

public SequenceFileReader(TrinoInputFile inputFile,
 long offset,
 long length)
                   throws IOException

Throws:

IOException

Method Details

getFileLocation

public String getFileLocation()

getKeyClassName

public String getKeyClassName()

getValueClassName

public String getValueClassName()

getMetadata

public Map<String,String> getMetadata()

getBytesRead

public long getBytesRead()

Specified by:

getBytesRead in interface LineReader

getRowsRead

public long getRowsRead()

getReadTimeNanos

public long getReadTimeNanos()

Specified by:

getReadTimeNanos in interface LineReader

getSync

public io.airlift.slice.Slice getSync()

getRetainedSize

public long getRetainedSize()

Specified by:

getRetainedSize in interface LineReader

isClosed

public boolean isClosed()

Specified by:

isClosed in interface LineReader

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

readLine

public boolean readLine(LineBuffer lineBuffer)
                 throws IOException

Description copied from interface: LineReader

Read a line into the buffer. If there are no more lines in the steam, this reader is closed.

Specified by:

readLine in interface LineReader

Returns:

true if a line was read; otherwise, there no more lines and false is returned

Throws:

IOException