Yes, I am extending it from AppenderSkeleton. Following is the header file
that I am defining.
Please let me know if you see any issues with this.
Thanks,
Ashfaq
#include <log4cxx/appenderskeleton.h>
#include <log4cxx/helpers/class.h>
#include <tibems/tibems.h>
using namespace log4cxx;
using namespace log4cxx::helpers;
class EMSAppender;
typedef helpers::ObjectPtrT<EMSAppender> EMSAppenderPtr;
class LOG4CXX_EXPORT EMSAppender : public AppenderSkeleton
{
public:
DECLARE_LOG4CXX_OBJECT(EMSAppender)
BEGIN_LOG4CXX_CAST_MAP()
LOG4CXX_CAST_ENTRY(EMSAppender)
LOG4CXX_CAST_ENTRY_CHAIN(AppenderSkeleton)
END_LOG4CXX_CAST_MAP()
EMSAppender();
EMSAppender(const LogString& serverUrl, const
LogString& queueName,
const LogString& userName, const LogString& password);
~EMSAppender();
void append(const spi::LoggingEventPtr& event);
void append(const spi::LoggingEventPtr& event,
log4cxx::helpers::Pool&
p);
protected:
virtual bool checkEntryConditions() const;
public:
void close() { };
protected:
void setOption(const LogString& option,
const LogString& value);
tibemsConnection connection;
tibemsSession session;
tibemsMsgProducer msgProducer;
tibemsDestination destination;
LogString serverUrl;
LogString queueName;
LogString userName;
LogString password;
public:
void
activateOptions(log4cxx::helpers::Pool& /* pool */);
protected:
virtual void subAppend(const spi::LoggingEventPtr& event,
log4cxx::helpers::Pool& p);
public:
virtual bool requiresLayout() const {
return true; }
void setServerUrl(LogString serverUrl)
{ serverUrl = serverUrl; };
void setQueueName(LogString qn) {
queueName = qn; };
void setUserName (LogString un) {
userName = un; };
void setPassword (LogString pwd) {
password = pwd; };
LogString getServerUrl() { return
serverUrl; }
LogString getQueueName() { return
queueName; }
LogString getUserName() { return
userName; }
LogString getPassword() { return
password; }
/**
Clear internal references to the writer and
other variables.
Subclasses can override this method for an
alternate closing
behavior. */
protected:
virtual void reset();
};
carnold-3 wrote:
>
>
> On Dec 2, 2007, at 11:33 PM, Ashfaque wrote:
>
>>
>> Hi,
>>
>> I am trying to add a custom appender using version 0.10.0 of
>> log4cxx. But I
>> am receiving the following linker errors. Can anyone help me out in
>> resolving these errors?
>>
>> Error 25 error LNK2019: unresolved external symbol
>> "__declspec(dllimport)
>> public: virtual bool __thiscall EMSAppender::instanceof(class
>> log4cxx::helpers::Class const &)const "
>> ([EMAIL PROTECTED]@@[EMAIL PROTECTED]@log4cxx@@@Z)
>> referenced in function "[thunk]:public: virtual bool __thiscall
>> EMSAppender::instanceof`vtordisp{4294967292,0}' (class
>> log4cxx::helpers::Class const &)const "
>> ([EMAIL PROTECTED]@@
>> [EMAIL PROTECTED]@[EMAIL PROTECTED]@log4cxx@@@Z)
>> emsappender.obj
>>
>> Error 26 error LNK2019: unresolved external symbol
>> "__declspec(dllimport)
>> public: void __thiscall EMSAppender::`vbase destructor'(void)"
>> (__imp_??_DEMSAppender@@QAEXXZ) referenced in function "public:
>> virtual void
>> * __thiscall EMSAppender::`scalar deleting destructor'(unsigned int)"
>> (??_GEMSAppender@@[EMAIL PROTECTED]) emsappender.obj
>>
>>
>> Thanks,
>> Ashfaq
>>
>
>
> Could you provide more details on how you are defining EMSAppender.
> The header file (or at least a sanitized edition) would be helpful.
>
> The implementation of instanceof() is typically provided by the
> END_LOG4CXX_CAST_MAP macro or inherited from a base class, such as
> AppenderSkeleton. Did you derive from AppenderSkeleton (either
> directly or through another class such as WriterAppender)? If not,
> I'd recommend inheriting from AppenderSkeleton.
>
> You could also try starting with an existing custom appender (like src/
> cpp/vectorappender.h and src/cpp/vectorappender.cpp) and see if you
> can link it correctly and then modify it to match your EMSAppender.
>
>
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