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// File: CDF_Session.cxx
// Created: Fri Aug 8 11:04:07 1997
// Author: Jean-Louis Frenkel
// <rmi@frilox.paris1.matra-dtv.fr>
#include <CDF_Session.ixx>
#include <TCollection_ExtendedString.hxx>
#include <CDF_MetaDataDriverFactory.hxx>
#include <Plugin.hxx>
#include <Standard_GUID.hxx>
#include <PCDM.hxx>
#include <PCDM_Reader.hxx>
#include <Standard_ErrorHandler.hxx>
#include <Standard_Failure.hxx>
static Handle(CDF_Session) CS;
//=======================================================================
//function :
//purpose :
//=======================================================================
CDF_Session::CDF_Session () : myHasCurrentApplication(Standard_False)
{
Standard_MultiplyDefined_Raise_if(!CS.IsNull()," a session already exists");
myDirectory = new CDF_Directory();
CS = this;
}
//=======================================================================
//function : Exists
//purpose :
//=======================================================================
Standard_Boolean CDF_Session::Exists() {
return !CS.IsNull();
}
//=======================================================================
//function : Directory
//purpose :
//=======================================================================
Handle(CDF_Directory) CDF_Session::Directory() const {
return CS->myDirectory;
}
//=======================================================================
//function : CurrentSession
//purpose :
//=======================================================================
Handle(CDF_Session) CDF_Session::CurrentSession() {
Standard_NoSuchObject_Raise_if(CS.IsNull(), "no session has been created");
return CS;
}
//=======================================================================
//function : HasCurrentApplication
//purpose :
//=======================================================================
Standard_Boolean CDF_Session::HasCurrentApplication() const {
return myHasCurrentApplication;
}
//=======================================================================
//function : CurrentApplication
//purpose :
//=======================================================================
Handle(CDF_Application) CDF_Session::CurrentApplication() const {
Standard_NoSuchObject_Raise_if(!myHasCurrentApplication,"there is no current application in the session");
return myCurrentApplication;
}
//=======================================================================
//function : SetCurrentApplication
//purpose :
//=======================================================================
void CDF_Session::SetCurrentApplication(const Handle(CDF_Application)& anApplication) {
myCurrentApplication = anApplication;
myHasCurrentApplication = Standard_True;
}
//=======================================================================
//function : UnsetCurrentApplication
//purpose :
//=======================================================================
void CDF_Session::UnsetCurrentApplication() {
myHasCurrentApplication = Standard_False;
myCurrentApplication.Nullify();
}
//=======================================================================
//function : MetaDataDriver
//purpose :
//=======================================================================
Handle(CDF_MetaDataDriver) CDF_Session::MetaDataDriver() const {
Standard_NoSuchObject_Raise_if(myMetaDataDriver.IsNull(),"no metadatadriver has been provided; this session is not able to store or retrieve files.");
return myMetaDataDriver;
}
//=======================================================================
//function : LoadDriver
//purpose :
//=======================================================================
void CDF_Session::LoadDriver() {
myMetaDataDriver=Handle(CDF_MetaDataDriverFactory)::DownCast(Plugin::Load(Standard_GUID("a148e300-5740-11d1-a904-080036aaa103")))->Build();
}
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