Package org.apache.camel.component.wal

Class LogReader

java.lang.Object

org.apache.camel.component.wal.LogReader

All Implemented Interfaces:

AutoCloseable

public class LogReader
extends Object
implements AutoCloseable

A reader for write-ahead log files

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_CAPACITY

Constructor Summary

Constructors

Constructor	Description
LogReader(File logFile)	Constructor
LogReader(File logFile, int capacity)	Constructor

Method Summary

Modifier and Type	Method	Description
void	close()	Close the reader and release resources
Header	getHeader()	Gets the file header
org.apache.camel.component.wal.PersistedLogEntry	readEntry()	Read an entry from the file.

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_CAPACITY

public static final int DEFAULT_CAPACITY

See Also:

• Constant Field Values

Constructor Details

LogReader

public LogReader(File logFile)
          throws IOException

Constructor

Parameters:

logFile - the report file name

Throws:

IOException - in case of I/O errors

LogReader

public LogReader(File logFile,
 int capacity)
          throws IOException

Constructor

Parameters:

logFile - the report file name

Throws:

IOException - in case of I/O errors

Method Details

getHeader

public Header getHeader()

Gets the file header

Returns:

the file header

readEntry

public org.apache.camel.component.wal.PersistedLogEntry readEntry()
                                                           throws IOException

Read an entry from the file.

Returns:

A log entry from the file or null when reaching the end-of-file or if the file is empty

Throws:

IOException - if unable to read the entry

close

public void close()

Close the reader and release resources

Specified by:

close in interface AutoCloseable