log4cxx::filter::AndFilter Class Reference

A filter that 'and's the results of any number of contained filters together. More...

#include <andfilter.h>

Inheritance diagram for log4cxx::filter::AndFilter:

Public Member Functions
	AndFilter ()
	~AndFilter ()
void	addFilter (const spi::FilterPtr &filter)
void	setAcceptOnMatch (bool acceptOnMatch)
FilterDecision	decide (const spi::LoggingEventPtr &event) const override
Public Member Functions inherited from log4cxx::spi::Filter
	Filter ()
	Filter (std::unique_ptr< FilterPrivate > priv)
virtual	~Filter ()
log4cxx::spi::FilterPtr	getNext () const
void	setNext (const log4cxx::spi::FilterPtr &newNext)
void	activateOptions (helpers::Pool &p) override
	Activate the options that were previously set with calls to option setters.
void	setOption (const LogString &option, const LogString &value) override
	Set option to value.
Public Member Functions inherited from log4cxx::spi::OptionHandler
virtual	~OptionHandler ()
Public Member Functions inherited from log4cxx::helpers::Object
virtual	~Object ()
virtual const helpers::Class &	getClass () const =0
virtual bool	instanceof (const Class &clazz) const =0
virtual const void *	cast (const Class &clazz) const =0

Additional Inherited Members
Public Types inherited from log4cxx::spi::Filter
enum	FilterDecision { DENY = -1 , NEUTRAL = 0 , ACCEPT = 1 }

Detailed Description

A filter that 'and's the results of any number of contained filters together.

For the filter to process events, all contained filters must return Filter::ACCEPT.

If the contained filters do not return Filter::ACCEPT, Filter::NEUTRAL is returned.

If acceptOnMatch is set to true, Filter::ACCEPT is returned. If acceptOnMatch is set to false, Filter::DENY is returned.

Here is an example config that will accept only events that contain BOTH a DEBUG level AND 'test' in the message:

 <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
  <filter class="org.apache.log4j.filter.AndFilter">
   <filter class="org.apache.log4j.filter.LevelMatchFilter">
        <param name="levelToMatch" value="DEBUG" />
        <param name="acceptOnMatch" value="true" />
   </filter>
   <filter class="org.apache.log4j.filter.StringMatchFilter">
        <param name="stringToMatch" value="test" />
        <param name="acceptOnMatch" value="true" />
   </filter>
   <param name="acceptOnMatch" value="false"/>
  </filter>
  <filter class="org.apache.log4j.filter.DenyAllFilter"/>
 <layout class="org.apache.log4j.SimpleLayout"/>
 </appender>
 

To accept all events EXCEPT those events that contain a DEBUG level and 'test' in the message: change the AndFilter's acceptOnMatch param to false and remove the DenyAllFilter

NOTE: If you are defining a filter that is only relying on logging event content (no external or filter-managed state), you could opt instead to use an ExpressionFilter with one of the following expressions:

LEVEL == DEBUG && MSG ~= 'test' or ! ( LEVEL == DEBUG && MSG ~= 'test' )

Constructor & Destructor Documentation

AndFilter()

log4cxx::filter::AndFilter::AndFilter

(

)

~AndFilter()

log4cxx::filter::AndFilter::~AndFilter

(

)

Member Function Documentation

addFilter()

void log4cxx::filter::AndFilter::addFilter

(

const spi::FilterPtr &

filter

)

decide()

FilterDecision log4cxx::filter::AndFilter::decide ( const spi::LoggingEventPtr & event ) const

overridevirtual

If the decision is DENY, then the event will be dropped. If the decision is NEUTRAL, then the next filter, if any, will be invoked. If the decision is ACCEPT then the event will be logged without consulting with other filters in the chain.

Parameters

event

The LoggingEvent to decide upon.

Returns

The decision of the filter.

Implements log4cxx::spi::Filter.

setAcceptOnMatch()

void log4cxx::filter::AndFilter::setAcceptOnMatch

(

bool

acceptOnMatch

)

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The documentation for this class was generated from the following file:

• andfilter.h