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File indexing completed on 2024-04-06 12:12:01
0001 #ifndef FWCore_Framework_ESHandleExceptionFactory_h 0002 #define FWCore_Framework_ESHandleExceptionFactory_h 0003 // -*- C++ -*- 0004 // 0005 // Package: FWCore/Framework 0006 // Class : ESHandleExceptionFactory 0007 // 0008 /**\class edm::ESHandleExceptionFactory 0009 0010 Description: Creates exceptions for an edm::ESHandle 0011 0012 Usage: 0013 When an event setup data product is requested which is not available, 0014 the edm::ESHandle<> will hold an edm::ESHandleExceptionFactory which is 0015 used to manufacture the exception which will be thrown if the ESHandle 0016 is dereferenced. 0017 Using a factory over having the exception already in the ESHandle 0018 is faster for the case where code calls Handle::isValid before 0019 dereferencing. 0020 0021 */ 0022 // 0023 // Original Author: W. David Dagenhart 0024 // Created: 1 May 2014 0025 // 0026 0027 #include <exception> 0028 0029 namespace edm { 0030 0031 class ESHandleExceptionFactory { 0032 public: 0033 ESHandleExceptionFactory(); 0034 virtual ~ESHandleExceptionFactory(); 0035 0036 virtual std::exception_ptr make() const = 0; 0037 }; 0038 } // namespace edm 0039 #endif
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