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LogFilterTaql.h
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//# LogFilterTaql.h: Filter LogMessages using a TaQL expression
//# Copyright (C) 1996,2000,2003
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
#ifndef TABLES_LOGFILTERTAQL_H
#define TABLES_LOGFILTERTAQL_H
//# Includes
#include <casacore/casa/aips.h>
#include <casacore/casa/Logging/LogFilterInterface.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
//# Forward Declarations
class LogFilterExpr;
// <summary>
// Filter LogMessages using a TaQL expression.
// </summary>
// <use visibility=export>
// <reviewed reviewer="wbrouw" date="1996/08/21" tests="" demos="dLogging.cc" tests="tLogging.cc">
// </reviewed>
// <prerequisite>
// <li> <linkto class="LogMessage">LogMessage</linkto>
// </prerequisite>
//
// <etymology>
// Log[Message] Filter.
// </etymology>
//
// <synopsis>
// The <src>LogFilter</src> class is used by the various log sink classes,
// typically accessed through <linkto class="LogSink">LogSink</linkto>, to
// decide whether a particular <linkto class="LogMessage">LogMessage</linkto>
// should be accepted or rejected.
//
// Simple filtering is based on the messages priority.
// In particular, you typically will choose to only pass messages greater
// than or equal to <src>NORMAL</src> in priority, but you might choose
// <src>DEBUGGING</src> to see all messages, or <src>SEVERE</src> to only see
// messages that report serious problems.
// </synopsis>
//
// <example>
// Suppose we wanted to change the global sink so that it prints all messages,
// including debugging messages:
// <srcblock>
// LogFilter all(LogMessage::DEBUGGING);
// LogSink::globalSink().filter(all);
// </srcblock>
// </example>
//
// <motivation>
// </motivation>
//
//# <todo asof="1996/07/23">
//# </todo>
class LogFilterTaql : public LogFilterInterface
{
public:
// Construct a filter from a TaQL expression. Only messages matching
// the expression pass the filter.
// The field names that can be used in the expression are:
// TIME, PRIORITY, MESSAGE, LOCATION, OBJECT_ID.
// All fields are strings, expect for TIME which is a double (MJD in sec.).
explicit LogFilterTaql (const String& expr);
// Copy <src>other</src> to <src>this</src>.
// <group>
LogFilterTaql (const LogFilterTaql& other);
LogFilterTaql& operator= (const LogFilterTaql& other);
// </group>
virtual ~LogFilterTaql();
// Clone the object.
virtual LogFilterTaql* clone() const;
// Return True if <src>message</src> passes this filter.
virtual Bool pass (const LogMessage& message) const;
private:
LogFilterExpr* expr_p;
};
} //# NAMESPACE CASACORE - END
#endif
casacore::LogFilterExpr
Definition LogFilterExpr.h:53
casacore::LogFilterInterface::LogFilterInterface
LogFilterInterface()
Construct a filter with the LOWEST priority that you want passed.
Definition LogFilterInterface.h:89
casacore::LogFilterTaql::LogFilterTaql
LogFilterTaql(const String &expr)
Construct a filter from a TaQL expression.
casacore::LogFilterTaql::operator=
LogFilterTaql & operator=(const LogFilterTaql &other)
casacore::LogFilterTaql::clone
virtual LogFilterTaql * clone() const
Clone the object.
casacore::LogFilterTaql::expr_p
LogFilterExpr * expr_p
Definition LogFilterTaql.h:109
casacore::LogFilterTaql::LogFilterTaql
LogFilterTaql(const LogFilterTaql &other)
Copy other to this.
casacore::LogFilterTaql::~LogFilterTaql
virtual ~LogFilterTaql()
casacore::LogFilterTaql::pass
virtual Bool pass(const LogMessage &message) const
Return True if message passes this filter.
casacore::LogMessage
Definition LogMessage.h:98
casacore::String
String: the storage and methods of handling collections of characters.
Definition String.h:223
casacore
this file contains all the compiler specific defines
Definition mainpage.dox:28
casacore::Bool
bool Bool
Define the standard types used by Casacore.
Definition aipstype.h:40