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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _LOG4CXX_FILTER_LOCATIONINFOFILTER_H
#define _LOG4CXX_FILTER_LOCATIONINFOFILTER_H
#include <log4cxx/spi/filter.h>
namespace log4cxx
{
namespace rule
{
class ExpressionRule;
class Rule;
typedef helpers::ObjectPtrT < Rule > RulePtr;
typedef helpers::ObjectPtrT < ExpressionRule > ExpressionRulePtr;
}
namespace filter
{
/**
* Location information is usually specified at the appender level - all events associated
* with an appender either create and parse stack traces or they do not. This is
* an expensive operation and in some cases not needed for all events associated with
* an appender.
*
* This filter creates event-level location information only if the provided expression evaluates to true.
*
* For information on expression syntax, see org.apache.log4j.rule.ExpressionRule
*
*
*/
class LOG4CXX_EXPORT LocationInfoFilter:public log4cxx::spi::Filter
{
bool convertInFixToPostFix;
LogString expression;
log4cxx::rule::RulePtr expressionRule;
//HACK: Category is the last of the internal layers - pass this in as the class name
//in order for parsing to work correctly
LogString className;
public:
DECLARE_LOG4CXX_OBJECT(LocationInfoFilter)
BEGIN_LOG4CXX_CAST_MAP()
LOG4CXX_CAST_ENTRY(log4cxx::spi::Filter)
END_LOG4CXX_CAST_MAP()
LocationInfoFilter();
void activateOptions(log4cxx::helpers::Pool &);
void setExpression(const LogString & expression);
LogString getExpression() const;
void setConvertInFixToPostFix(bool convertInFixToPostFix);
bool getConvertInFixToPostFix() const;
/**
* If this event does not already contain location information,
* evaluate the event against the expression.
*
* If the expression evaluates to true, generate a LocationInfo instance
* by creating an exception and set this LocationInfo on the event.
*
* Returns {@link log4cxx::spi::Filter#NEUTRAL}
*/
FilterDecision decide(const spi::LoggingEventPtr & event) const;
};
}
}
#endif
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