org.neo4j.logging

Class NullLog

java.lang.Object

org.neo4j.logging.NullLog

All Implemented Interfaces:

Log

public final class NullLog
extends Object
implements Log

A Log implementation that discards all messages

Method Summary

Modifier and Type	Method and Description
void	bulk(Consumer<Log> consumer) Used to temporarily log several messages in bulk.
void	debug(String message) Shorthand for debugLogger().log( message )
void	debug(String format, Object... arguments) Shorthand for debugLogger().log( format, arguments )
void	debug(String message, Throwable throwable) Shorthand for debugLogger().log( message, throwable )
Logger	debugLogger()
void	error(String message) Shorthand for errorLogger().log( message )
void	error(String format, Object... arguments) Shorthand for errorLogger().log( format, arguments )
void	error(String message, Throwable throwable) Shorthand for errorLogger().log( message, throwable )
Logger	errorLogger()
static NullLog	getInstance()
void	info(String message) Shorthand for infoLogger().log( message )
void	info(String format, Object... arguments) Shorthand for infoLogger().log( format, arguments )
void	info(String message, Throwable throwable) Shorthand for infoLogger().log( message, throwable )
Logger	infoLogger()
boolean	isDebugEnabled()
void	warn(String message) Shorthand for warnLogger().log( message )
void	warn(String format, Object... arguments) Shorthand for warnLogger().log( format, arguments )
void	warn(String message, Throwable throwable) Shorthand for warnLogger().log( message, throwable )
Logger	warnLogger()

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static NullLog getInstance()

Returns:

A singleton NullLog instance

isDebugEnabled

public boolean isDebugEnabled()

Specified by:

isDebugEnabled in interface Log

Returns:

true if the current log level enables debug logging

debugLogger

@Nonnull
public Logger debugLogger()

Specified by:

debugLogger in interface Log

Returns:

a Logger instance for writing debug messages

debug

public void debug(@Nonnull
                  String message)

Description copied from interface: Log

Shorthand for debugLogger().log( message )

Specified by:

debug in interface Log

Parameters:

message - The message to be written

debug

public void debug(@Nonnull
                  String message,
                  @Nonnull
                  Throwable throwable)

Description copied from interface: Log

Shorthand for debugLogger().log( message, throwable )

Specified by:

debug in interface Log

Parameters:

message - The message to be written

throwable - An exception that will also be written

debug

public void debug(@Nonnull
                  String format,
                  @Nonnull
                  Object... arguments)

Description copied from interface: Log

Shorthand for debugLogger().log( format, arguments )

Specified by:

debug in interface Log

Parameters:

format - A string format for writing a message

arguments - Arguments to substitute into the message according to the format

infoLogger

@Nonnull
public Logger infoLogger()

Specified by:

infoLogger in interface Log

Returns:

a Logger instance for writing info messages

info

public void info(@Nonnull
                 String message)

Description copied from interface: Log

Shorthand for infoLogger().log( message )

Specified by:

info in interface Log

Parameters:

message - The message to be written

info

public void info(@Nonnull
                 String message,
                 @Nonnull
                 Throwable throwable)

Description copied from interface: Log

Shorthand for infoLogger().log( message, throwable )

Specified by:

info in interface Log

Parameters:

message - The message to be written

throwable - An exception that will also be written

info

public void info(@Nonnull
                 String format,
                 @Nonnull
                 Object... arguments)

Description copied from interface: Log

Shorthand for infoLogger().log( format, arguments )

Specified by:

info in interface Log

Parameters:

format - A string format for writing a message

arguments - Arguments to substitute into the message according to the format

warnLogger

@Nonnull
public Logger warnLogger()

Specified by:

warnLogger in interface Log

Returns:

a Logger instance for writing warn messages

warn

public void warn(@Nonnull
                 String message)

Description copied from interface: Log

Shorthand for warnLogger().log( message )

Specified by:

warn in interface Log

Parameters:

message - The message to be written

warn

public void warn(@Nonnull
                 String message,
                 @Nonnull
                 Throwable throwable)

Description copied from interface: Log

Shorthand for warnLogger().log( message, throwable )

Specified by:

warn in interface Log

Parameters:

message - The message to be written

throwable - An exception that will also be written

warn

public void warn(@Nonnull
                 String format,
                 @Nonnull
                 Object... arguments)

Description copied from interface: Log

Shorthand for warnLogger().log( format, arguments )

Specified by:

warn in interface Log

Parameters:

format - A string format for writing a message

arguments - Arguments to substitute into the message according to the format

errorLogger

@Nonnull
public Logger errorLogger()

Specified by:

errorLogger in interface Log

Returns:

a Logger instance for writing error messages

error

public void error(@Nonnull
                  String message)

Description copied from interface: Log

Shorthand for errorLogger().log( message )

Specified by:

error in interface Log

Parameters:

message - The message to be written

error

public void error(@Nonnull
                  String message,
                  @Nonnull
                  Throwable throwable)

Description copied from interface: Log

Shorthand for errorLogger().log( message, throwable )

Specified by:

error in interface Log

Parameters:

message - The message to be written

throwable - An exception that will also be written

error

public void error(@Nonnull
                  String format,
                  @Nonnull
                  Object... arguments)

Description copied from interface: Log

Shorthand for errorLogger().log( format, arguments )

Specified by:

error in interface Log

Parameters:

format - A string format for writing a message

arguments - Arguments to substitute into the message according to the format

bulk

public void bulk(@Nonnull
                 Consumer<Log> consumer)

Description copied from interface: Log

Used to temporarily log several messages in bulk. The implementation may choose to disable flushing, and may also block other operations until the bulk update is completed.

Specified by:

bulk in interface Log

Parameters:

consumer - A consumer for the bulk Log