/usr/include/log4cplus/spi/factory.h is in liblog4cplus-dev 1.0.4-1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// File: factory.h
// Created: 2/2002
// Author: Tad E. Smith
//
//
// Copyright 2002-2010 Tad E. Smith
//
// 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.
/** @file */
#ifndef LOG4CPLUS_SPI_FACTORY_HEADER_
#define LOG4CPLUS_SPI_FACTORY_HEADER_
#include <log4cplus/config.hxx>
#include <log4cplus/appender.h>
#include <log4cplus/layout.h>
#include <log4cplus/tstring.h>
#include <log4cplus/helpers/property.h>
#include <log4cplus/helpers/threads.h>
#include <log4cplus/spi/filter.h>
#include <log4cplus/spi/objectregistry.h>
#include <map>
#include <memory>
#include <vector>
namespace log4cplus {
namespace spi {
/**
* This is the base class for all factories.
*/
class LOG4CPLUS_EXPORT BaseFactory {
public:
virtual ~BaseFactory() = 0;
/**
* Returns the typename of the objects this factory creates.
*/
virtual log4cplus::tstring getTypeName() = 0;
};
/**
* This abstract class defines the "Factory" interface to create "Appender"
* objects.
*/
class LOG4CPLUS_EXPORT AppenderFactory : public BaseFactory {
public:
typedef Appender ProductType;
typedef SharedAppenderPtr ProductPtr;
AppenderFactory();
virtual ~AppenderFactory() = 0;
/**
* Create an "Appender" object.
*/
virtual SharedAppenderPtr createObject(const log4cplus::helpers::Properties& props) = 0;
};
/**
* This abstract class defines the "Factory" interface to create "Layout"
* objects.
*/
class LOG4CPLUS_EXPORT LayoutFactory : public BaseFactory {
public:
typedef Layout ProductType;
typedef std::auto_ptr<Layout> ProductPtr;
LayoutFactory();
virtual ~LayoutFactory() = 0;
/**
* Create a "Layout" object.
*/
virtual std::auto_ptr<Layout> createObject(const log4cplus::helpers::Properties& props) = 0;
};
/**
* This abstract class defines the "Factory" interface to create "Appender"
* objects.
*/
class LOG4CPLUS_EXPORT FilterFactory : public BaseFactory {
public:
typedef Filter ProductType;
typedef FilterPtr ProductPtr;
FilterFactory();
virtual ~FilterFactory() = 0;
/**
* Create a "Filter" object.
*/
virtual FilterPtr createObject(const log4cplus::helpers::Properties& props) = 0;
};
/**
* This template class is used as a "Factory Registry". Objects are
* "entered" into the registry with a "name" using the
* <code>put()</code> method. (The registry then owns the object.)
* These object can then be retrieved using the <code>get()</code>
* method.
*
* <b>Note:</b> This class is Thread-safe.
*/
template<class T>
class LOG4CPLUS_EXPORT FactoryRegistry : ObjectRegistryBase {
public:
typedef T product_type;
virtual ~FactoryRegistry() {
clear();
}
// public methods
/**
* Used to enter an object into the registry. (The registry now
* owns <code>object</code>.)
*/
bool put(std::auto_ptr<T> object) {
bool putValResult = putVal(object->getTypeName(), object.get());
object.release();
return putValResult;
}
/**
* Used to retrieve an object from the registry. (The registry
* owns the returned pointer.)
*/
T* get(const log4cplus::tstring& name) const {
return static_cast<T*>(getVal(name));
}
protected:
virtual void deleteObject(void *object) const {
delete static_cast<T*>(object);
}
};
typedef FactoryRegistry<AppenderFactory> AppenderFactoryRegistry;
typedef FactoryRegistry<LayoutFactory> LayoutFactoryRegistry;
typedef FactoryRegistry<FilterFactory> FilterFactoryRegistry;
/**
* Returns the "singleton" <code>AppenderFactoryRegistry</code>.
*/
LOG4CPLUS_EXPORT AppenderFactoryRegistry& getAppenderFactoryRegistry();
/**
* Returns the "singleton" <code>LayoutFactoryRegistry</code>.
*/
LOG4CPLUS_EXPORT LayoutFactoryRegistry& getLayoutFactoryRegistry();
/**
* Returns the "singleton" <code>FilterFactoryRegistry</code>.
*/
LOG4CPLUS_EXPORT FilterFactoryRegistry& getFilterFactoryRegistry();
}
}
#endif // LOG4CPLUS_SPI_FACTORY_HEADER_
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