Package org.apache.iotdb.confignode.writelog.io

Class SingleFileLogReader

java.lang.Object

org.apache.iotdb.confignode.writelog.io.SingleFileLogReader

All Implemented Interfaces:

ILogReader

public class SingleFileLogReader
extends Object
implements ILogReader

Field Summary

Fields

Modifier and Type	Field	Description
static final int	LEAST_LOG_SIZE

Constructor Summary

Constructors

Constructor	Description
SingleFileLogReader(File logFile)

Method Summary

Modifier and Type	Method	Description
void	close()	release resources occupied by this object, like file streams.
boolean	hasNext()	return whether there exists next log to be read.
boolean	isFileCorrupted()
ConfigPhysicalPlan	next()	return the next log read from media like a WAL file and covert it to a PhysicalPlan.
void	open(File logFile)

Methods inherited from class java.lang.Object

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

Field Details

LEAST_LOG_SIZE

public static final int LEAST_LOG_SIZE

See Also:

• Constant Field Values

Constructor Details

SingleFileLogReader

public SingleFileLogReader(File logFile)
                    throws FileNotFoundException

Throws:

FileNotFoundException

Method Details

hasNext

public boolean hasNext()

Description copied from interface: ILogReader

return whether there exists next log to be read.

Specified by:

hasNext in interface ILogReader

Returns:

whether there exists next log to be read.

next

public ConfigPhysicalPlan next()

Description copied from interface: ILogReader

return the next log read from media like a WAL file and covert it to a PhysicalPlan.

Specified by:

next in interface ILogReader

Returns:

the next log as a PhysicalPlan

close

public void close()

Description copied from interface: ILogReader

release resources occupied by this object, like file streams.

Specified by:

close in interface ILogReader

open

public void open(File logFile)
          throws FileNotFoundException

Throws:

FileNotFoundException

isFileCorrupted

public boolean isFileCorrupted()