com.fr.third.apache.log4j

类 TTCCLayout

java.lang.Object

com.fr.third.apache.log4j.Layout

com.fr.third.apache.log4j.helpers.DateLayout

com.fr.third.apache.log4j.TTCCLayout

所有已实现的接口:

OptionHandler

public class TTCCLayout
extends DateLayout

TTCC layout format consists of time, thread, category and nested diagnostic context information, hence the name.

Each of the four fields can be individually enabled or disabled. The time format depends on the DateFormat used.

Here is an example TTCCLayout output with the RelativeTimeDateFormat.

176 [main] INFO  com.fr.third.apache.log4j.examples.Sort - Populating an array of 2 elements in reverse order.
225 [main] INFO  com.fr.third.apache.log4j.examples.SortAlgo - Entered the sort method.
262 [main] DEBUG com.fr.third.apache.log4j.examples.SortAlgo.OUTER i=1 - Outer loop.
276 [main] DEBUG com.fr.third.apache.log4j.examples.SortAlgo.SWAP i=1 j=0 - Swapping intArray[0] = 1 and intArray[1] = 0
290 [main] DEBUG com.fr.third.apache.log4j.examples.SortAlgo.OUTER i=0 - Outer loop.
304 [main] INFO  com.fr.third.apache.log4j.examples.SortAlgo.DUMP - Dump of interger array:
317 [main] INFO  com.fr.third.apache.log4j.examples.SortAlgo.DUMP - Element [0] = 0
331 [main] INFO  com.fr.third.apache.log4j.examples.SortAlgo.DUMP - Element [1] = 1
343 [main] INFO  com.fr.third.apache.log4j.examples.Sort - The next log statement should be an error message.
346 [main] ERROR com.fr.third.apache.log4j.examples.SortAlgo.DUMP - Tried to dump an uninitialized array.
        at com.fr.third.apache.log4j.examples.SortAlgo.dump(SortAlgo.java:58)
        at com.fr.third.apache.log4j.examples.Sort.main(Sort.java:64)
467 [main] INFO  com.fr.third.apache.log4j.examples.Sort - Exiting main method.

The first field is the number of milliseconds elapsed since the start of the program. The second field is the thread outputting the log statement. The third field is the level, the fourth field is the category to which the statement belongs.

The fifth field (just before the '-') is the nested diagnostic context. Note the nested diagnostic context may be empty as in the first two statements. The text after the '-' is the message of the statement.

WARNING Do not use the same TTCCLayout instance from within different appenders. The TTCCLayout is not thread safe when used in his way. However, it is perfectly safe to use a TTCCLayout instance from just one appender.

PatternLayout offers a much more flexible alternative.

作者:

Ceki Gülcü, Heinz Richter

字段概要

字段

限定符和类型	字段和说明
protected java.lang.StringBuffer	buf

从类继承的字段 com.fr.third.apache.log4j.helpers.DateLayout

date, DATE_FORMAT_OPTION, dateFormat, NULL_DATE_FORMAT, pos, RELATIVE_TIME_DATE_FORMAT, TIMEZONE_OPTION

从类继承的字段 com.fr.third.apache.log4j.Layout

LINE_SEP, LINE_SEP_LEN

构造器概要

构造器

构造器和说明
TTCCLayout() Instantiate a TTCCLayout object with RelativeTimeDateFormat as the date formatter in the local time zone.
TTCCLayout(java.lang.String dateFormatType) Instantiate a TTCCLayout object using the local time zone.

方法概要

方法

限定符和类型	方法和说明
java.lang.String	format(LoggingEvent event) In addition to the level of the statement and message, the returned byte array includes time, thread, category and NDC information.
boolean	getCategoryPrefixing() Returns value of the CategoryPrefixing option.
boolean	getContextPrinting() Returns value of the ContextPrinting option.
boolean	getThreadPrinting() Returns value of the ThreadPrinting option.
boolean	ignoresThrowable() The TTCCLayout does not handle the throwable contained within LoggingEvents.
void	setCategoryPrefixing(boolean categoryPrefixing) The CategoryPrefixing option specifies whether Category name is part of log output or not.
void	setContextPrinting(boolean contextPrinting) The ContextPrinting option specifies log output will include the nested context information belonging to the current thread.
void	setThreadPrinting(boolean threadPrinting) The ThreadPrinting option specifies whether the name of the current thread is part of log output or not.

从类继承的方法 com.fr.third.apache.log4j.helpers.DateLayout

activateOptions, dateFormat, getDateFormat, getOptionStrings, getTimeZone, setDateFormat, setDateFormat, setDateFormat, setOption, setTimeZone

从类继承的方法 com.fr.third.apache.log4j.Layout

getContentType, getFooter, getHeader

从类继承的方法 java.lang.Object

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

字段详细资料

buf

protected final java.lang.StringBuffer buf

构造器详细资料

TTCCLayout

public TTCCLayout()

Instantiate a TTCCLayout object with RelativeTimeDateFormat as the date formatter in the local time zone.

从以下版本开始:

0.7.5

TTCCLayout

public TTCCLayout(java.lang.String dateFormatType)

Instantiate a TTCCLayout object using the local time zone. The DateFormat used will depend on the dateFormatType.

This constructor just calls the DateLayout.setDateFormat(java.lang.String) method.

方法详细资料

setThreadPrinting

public void setThreadPrinting(boolean threadPrinting)

The ThreadPrinting option specifies whether the name of the current thread is part of log output or not. This is true by default.

getThreadPrinting

public boolean getThreadPrinting()

Returns value of the ThreadPrinting option.

setCategoryPrefixing

public void setCategoryPrefixing(boolean categoryPrefixing)

The CategoryPrefixing option specifies whether Category name is part of log output or not. This is true by default.

getCategoryPrefixing

public boolean getCategoryPrefixing()

Returns value of the CategoryPrefixing option.

setContextPrinting

public void setContextPrinting(boolean contextPrinting)

The ContextPrinting option specifies log output will include the nested context information belonging to the current thread. This is true by default.

getContextPrinting

public boolean getContextPrinting()

Returns value of the ContextPrinting option.

format

public java.lang.String format(LoggingEvent event)

In addition to the level of the statement and message, the returned byte array includes time, thread, category and NDC information.

Time, thread, category and diagnostic context are printed depending on options.

指定者:

format 在类中 Layout

参数:

event - The event to format

ignoresThrowable

public boolean ignoresThrowable()

The TTCCLayout does not handle the throwable contained within LoggingEvents. Thus, it returns true.

指定者:

ignoresThrowable 在类中 Layout

从以下版本开始:

version 0.8.4