xtd::diagnostics::trace_filter Class Reference

#include <trace_filter.h>

Definition

Provides the base class for trace filter implementations.

class core_export_ trace_filter abstract_

Inheritance

xtd::abstract_object → xtd::diagnostics::trace_filter

Namespace

xtd::diagnostics

Library

xtd.core

Remarks

Trace filters can be used by trace listeners to provide an extra layer of filtering beyond that provided by trace switches. The trace filter for a trace listener can be found in the listener's filter property. Trace switches determine if a trace is to be sent to the trace listeners. Trace filters allow the individual trace listeners to determine whether or not the trace is to be written to the associated output medium. For example, as determined by each trace filter, a trace may be written to the console by a console_trace_listener, but not to the event log by a event_log_trace_listener.

Filters that inherit from the trace_filter class can be used by trace listeners that inherit from the trace_listener class to perform filtering of events being traced. trace_filter contains a single method, should_trace, which takes event data and returns a flag indicating whether the event should be traced.

Methods
virtual bool	should_trace (const xtd::diagnostics::trace_event_cache &cache, const xtd::ustring &source, xtd::diagnostics::trace_event_type event_type, int32_t id, const xtd::ustring &message, std::any data1, const std::vector< std::any > &data_array)=0
	When overridden in a derived class, determines whether the trace listener should trace the event. More...

Protected constructors
	trace_filter ()=default
	Initializes a new instance of the trace_filter class. More...

Protectted methods
bool	should_trace (const xtd::diagnostics::trace_event_cache &cache, const xtd::ustring &source, xtd::diagnostics::trace_event_type event_type, int32_t id, const xtd::ustring &message)
	determines whether the trace listener should trace the event. More...
bool	should_trace (const xtd::diagnostics::trace_event_cache &cache, const xtd::ustring &source, xtd::diagnostics::trace_event_type event_type, int32_t id, const xtd::ustring &message, std::any data1)
	determines whether the trace listener should trace the event. More...

Constructor & Destructor Documentation

trace_filter()

xtd::diagnostics::trace_filter::trace_filter ( )

protecteddefault

Initializes a new instance of the trace_filter class.

Member Function Documentation

should_trace() [1/3]

virtual bool xtd::diagnostics::trace_filter::should_trace ( const xtd::diagnostics::trace_event_cache &  cache, const xtd::ustring &  source, xtd::diagnostics::trace_event_type  event_type, int32_t  id, const xtd::ustring &  message, std::any  data1, const std::vector< std::any > &  data_array  )

pure virtual

When overridden in a derived class, determines whether the trace listener should trace the event.

Parameters

cache	The trace_event_cache that contains information for the trace event.
source	The name of the source.
event_type	One of the trace_event_type values specifying the type of event that has caused the trace
id	A trace identifier number.
message	Message to write.
data1	A trace data object.
data_array	A trace data object.

Implemented in xtd::diagnostics::event_type_filter, and xtd::diagnostics::source_filter.

should_trace() [2/3]

bool xtd::diagnostics::trace_filter::should_trace ( const xtd::diagnostics::trace_event_cache &  cache, const xtd::ustring &  source, xtd::diagnostics::trace_event_type  event_type, int32_t  id, const xtd::ustring &  message  )

protected

determines whether the trace listener should trace the event.

Parameters

cache	The trace_event_cache that contains information for the trace event.
source	The name of the source.
event_type	One of the trace_event_type values specifying the type of event that has caused the trace
id	A trace identifier number.
message	Message to write.

should_trace() [3/3]

bool xtd::diagnostics::trace_filter::should_trace ( const xtd::diagnostics::trace_event_cache &  cache, const xtd::ustring &  source, xtd::diagnostics::trace_event_type  event_type, int32_t  id, const xtd::ustring &  message, std::any  data1  )

protected

determines whether the trace listener should trace the event.

Parameters

cache	The trace_event_cache that contains information for the trace event.
source	The name of the source.
event_type	One of the trace_event_type values specifying the type of event that has caused the trace
id	A trace identifier number.
message	Message to write.
data1	A trace data object.

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

• xtd.core/include/xtd/diagnostics/trace_filter.h