/*
 *
 *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
 *
 *  Licensed 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.
 */

/* $Rev$ $Date: 2005/12/22 16:54:15 $ */

#ifndef SDO_LOGGER_H
#define SDO_LOGGER_H



#include "commonj/sdo/export.h"
#include "commonj/sdo/LogWriter.h"
namespace commonj
{
    namespace sdo
    {
        
/**
 * Logger is used for debug style logging such as method trace.
 * The logger can log at different levels, and can log entry, exit
 * and events. The log entries can take arguments or be just 
 * strings.
 */
        class Logger {

        public:
/**
 * attach a log writer.
 */
            SDO_API static void setLogWriter(LogWriter* writer);
/**
 * switch logging to a level.
 */
            SDO_API static void setLogging(int level);

/**
 * log a message.
 */
            SDO_API static void log(int indent, int level, const char* msg);
/**
 * log a message with parameters.
 */
            SDO_API static void logArgs(int indent, int level, const char* msg, ...);

            static int loggingLevel;

        private:
            static LogWriter* logWriter;
            static LogWriter* getLogWriter();
            static int setLogging();
        };
        
    } // End namespace sdo
} // End namespace commonj
#endif // SDO_LOGGER_H