Filter.hh

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/*
 * Filter.hh
 *
 * Copyright 2001, LifeLine Networks BV (www.lifeline.nl). All rights reserved.
 * Copyright 2001, Bastiaan Bakker. All rights reserved.
 *
 * See the COPYING file for the terms of usage and distribution.
 */
 
#ifndef _LOG4SHIB_FILTER_HH
#define _LOG4SHIB_FILTER_HH
 
#include <log4shib/Portability.hh>
#include <log4shib/LoggingEvent.hh>
 
namespace log4shib {

 
    class LOG4SHIB_EXPORT Filter {
        public:
        
        typedef enum { DENY = -1,
                       NEUTRAL = 0,
                       ACCEPT = 1
        } Decision;

        Filter();

        virtual ~Filter();

        virtual void setChainedFilter(Filter* filter);

        virtual Filter* getChainedFilter();

        virtual Filter* getEndOfChain();

        virtual void appendChainedFilter(Filter* filter);

        virtual Decision decide(const LoggingEvent& event);
 
        protected:
        virtual Decision _decide(const LoggingEvent& event) = 0;
 
        private:
        Filter* _chainedFilter;
 
    }; 
 
}
 
#endif // _LOG4SHIB_FILTER_HH