COMP: Split into headers and sources

Modules/Core/ComponentInterface/CmakeLists.txt

 PROJECT(componenthandshake)
-cmake_minimum_required(VERSION 2.6)
-cmake_policy(VERSION 2.6)
-
-ADD_EXECUTABLE(componenthandshake componenthandshake.cxx)
+cmake_minimum_required(VERSION 2.8)
+cmake_policy(VERSION 2.8)
+file(GLOB componenthandshake_SRC
+    "*.h"
+    "*.cxx"
+	"*.hxx"
+)
+ADD_EXECUTABLE(componenthandshake ${componenthandshake_SRC})
\ No newline at end of file

Modules/Core/ComponentInterface/ComponentBase.h

+#ifndef ComponentBase_h
+#define ComponentBase_h
+
+namespace elx
+{
+  class ComponentBase {
+  public:
+    virtual ~ComponentBase(){};
+  };
+} // end namespace elx
+#endif // #define ComponentBase_h
\ No newline at end of file

Modules/Core/ComponentInterface/Example3rdPartyCode.cxx

+#include "Example3rdPartyCode.h"
+namespace Example3rdParty
+{
+GDOptimizer3rdParty::GDOptimizer3rdParty()
+{
+  this->theMetric = nullptr;
+}
+GDOptimizer3rdParty::~GDOptimizer3rdParty()
+{
+}
+int GDOptimizer3rdParty::SetMetric(Metric3rdPartyBase* metric)
+{
+  this->theMetric = metric;
+  return 0;
+}
+int GDOptimizer3rdParty::Optimize()
+{
+  if (this->theMetric != nullptr)
+  {
+    std::cout << "GDOptimizer3rdParty->Optimize():" << std::endl;
+    std::cout << "  theMetric->GetValue():" << theMetric->GetValue() << std::endl;
+    std::cout << "  theMetric->GetDerivative():" << theMetric->GetDerivative() << std::endl;
+  }
+  return 0;
+}
+} // end namespace Example3rdParty
\ No newline at end of file

Modules/Core/ComponentInterface/Example3rdPartyCode.h

+#ifndef Example3rdPartyCode_h
+#define Example3rdPartyCode_h
+
+#include <iostream>
+namespace Example3rdParty
+{
+
+  // test case: there are two (slightly) incompatible codebases (i.e. 3rd party and 4th party!), each with an optimizer object and a metric object. 
+  // goal: make elastix components of all objects and define a handshake that checks if connections can be made.
+
+  /*************** below: example implementations of 3rd and 4th party code base (assume we cannot change that) *********************/
+
+  class Metric3rdPartyBase{
+  public:
+    virtual int GetValue() = 0;
+    virtual int GetDerivative() = 0;
+  };
+
+  class Optimizer3rdPartyBase{
+  public:
+    virtual int SetMetric(Metric3rdPartyBase*) = 0;
+    virtual int Optimize() = 0;
+  protected:
+    Metric3rdPartyBase* theMetric;
+  };
+
+  class SSDMetric3rdParty : public Metric3rdPartyBase {
+  public:
+    virtual int GetValue() { return 1; };
+    virtual int GetDerivative() { return 2; };
+  };
+
+  class GDOptimizer3rdParty : public Optimizer3rdPartyBase {
+  public:
+    GDOptimizer3rdParty();
+    ~GDOptimizer3rdParty();
+    virtual int SetMetric(Metric3rdPartyBase*);
+    virtual int Optimize();
+  };
+} // end namespave Example3rdParty
+#endif // #define Example3rdPartyCode_h
\ No newline at end of file

Modules/Core/ComponentInterface/Example4thPartyCode.cxx

+#include "Example4thPartyCode.h"
+namespace Example4thParty
+{
+GDOptimizer4thParty::GDOptimizer4thParty()
+{
+  this->theMetric = nullptr;
+}
+GDOptimizer4thParty::~GDOptimizer4thParty()
+{
+}
+int GDOptimizer4thParty::SetMetric(Metric4thPartyBase* metric)
+{
+  this->theMetric = metric;
+  return 0;
+}
+int GDOptimizer4thParty::DoOptimization()
+{
+  if (this->theMetric != nullptr)
+  {
+    std::cout << "GDOptimizer4thParty->DoOptimization():" << std::endl;
+    std::cout << "  theMetric->GetCost():" << theMetric->GetCost() << std::endl;
+  }
+  return 0;
+}
+} // end namespace Example4thParty
\ No newline at end of file

Modules/Core/ComponentInterface/Example4thPartyCode.h

+#ifndef Example4thPartyCode_h
+#define Example4thPartyCode_h
+
+#include <iostream>
+
+namespace Example4thParty
+{
+	
+// test case: there are two (slightly) incompatible codebases (i.e. 3rd party and 4th party!), each with an optimizer object and a metric object. 
+// goal: make elastix components of all objects and define a handshake that checks if connections can be made.
+
+/*************** below: example implementations of 3rd and 4th party code base (assume we cannot change that) *********************/
+
+class Metric4thPartyBase{
+public:
+  virtual int GetCost() = 0; // with different naming convention than 3rd party
+};
+
+class Optimizer4thPartyBase{
+public:
+  virtual int SetMetric(Metric4thPartyBase*) = 0;
+  virtual int DoOptimization() = 0; // with different naming convention than 3rd party
+protected:
+  Metric4thPartyBase* theMetric;
+};
+
+class SSDMetric4thParty : public Metric4thPartyBase {
+public:
+  virtual int GetCost() { return 3; };
+};
+
+class GDOptimizer4thParty : public Optimizer4thPartyBase {
+public:
+  GDOptimizer4thParty();
+  ~GDOptimizer4thParty();
+  virtual int SetMetric(Metric4thPartyBase*);
+  virtual int DoOptimization();
+};
+} // end namespave Example4thParty
+#endif // #define Example4thPartyCode_h
\ No newline at end of file

Modules/Core/ComponentInterface/GDOptimizer3rdPartyComponent.cxx

+#include "GDOptimizer3rdPartyComponent.h"
+
+namespace elx
+{
+GDOptimizer3rdPartyComponent::GDOptimizer3rdPartyComponent()
+{
+  this->theImplementation = new Example3rdParty::GDOptimizer3rdParty();
+  this->MetricObject = new Metric3rdPartyWrapper();
+}
+GDOptimizer3rdPartyComponent::~GDOptimizer3rdPartyComponent()
+{
+  delete this->theImplementation;
+  delete this->MetricObject;
+}
+
+int GDOptimizer3rdPartyComponent::Set(MetricValueInterface* component)
+{
+  this->MetricObject->SetMetricValueComponent(component);
+  return 0;
+}
+int GDOptimizer3rdPartyComponent::Set(MetricDerivativeInterface* component)
+{
+  this->MetricObject->SetMetricDerivativeComponent(component);
+  return 0;
+}
+int GDOptimizer3rdPartyComponent::Update()
+{
+  this->theImplementation->SetMetric(this->MetricObject);
+  return this->theImplementation->Optimize(); // 3rd party specific call
+}
+} //end namespace elx
\ No newline at end of file

Modules/Core/ComponentInterface/GDOptimizer3rdPartyComponent.h

+#ifndef GDOptimizer3rdPartyComponent_h
+#define GDOptimizer3rdPartyComponent_h
+
+#include "ComponentBase.h"
+#include "Interfaces.hxx"
+#include "Example3rdPartyCode.h"
+#include "Metric3rdPartyWrapper.h"
+
+namespace elx
+{
+  class GDOptimizer3rdPartyComponent : public ComponentBase, public InterfaceAcceptor<MetricValueInterface>, public InterfaceAcceptor<MetricDerivativeInterface>, public OptimizerUpdateInterface
+  {
+  public:
+    GDOptimizer3rdPartyComponent();
+    ~GDOptimizer3rdPartyComponent();
+    Example3rdParty::GDOptimizer3rdParty* theImplementation;
+    Metric3rdPartyWrapper* MetricObject;
+    int Set(MetricValueInterface*);
+    int Set(MetricDerivativeInterface*);
+    int Update();
+  };
+} //end namespace elx
+#endif // #define GDOptimizer3rdPartyComponent_h
\ No newline at end of file

Modules/Core/ComponentInterface/GDOptimizer4thPartyComponent.cxx

+#include "GDOptimizer4thPartyComponent.h"
+
+namespace elx
+{
+
+GDOptimizer4thPartyComponent::GDOptimizer4thPartyComponent()
+{
+  this->theImplementation = new Example4thParty::GDOptimizer4thParty();
+  this->MetricObject = new Metric4thPartyWrapper();
+}
+
+GDOptimizer4thPartyComponent::~GDOptimizer4thPartyComponent()
+{
+  delete this->theImplementation;
+  delete this->MetricObject;
+}
+
+int GDOptimizer4thPartyComponent::Set(MetricValueInterface* component)
+{
+  this->MetricObject->SetMetricValueComponent(component);
+  return 0;
+}
+
+int GDOptimizer4thPartyComponent::Update()
+{
+  this->theImplementation->SetMetric(this->MetricObject);
+  return this->theImplementation->DoOptimization(); // 4th party specific call
+}
+} //end namespace elx
\ No newline at end of file

Modules/Core/ComponentInterface/GDOptimizer4thPartyComponent.h

+#ifndef GDOptimizer4thPartyComponent_h
+#define GDOptimizer4thPartyComponent_h
+
+#include "ComponentBase.h"
+#include "Interfaces.hxx"
+#include "Example4thPartyCode.h"
+#include "Metric4thPartyWrapper.h"
+
+namespace elx
+{
+  // wrapping into components: 
+  class GDOptimizer4thPartyComponent : public ComponentBase, public InterfaceAcceptor<MetricValueInterface>, public OptimizerUpdateInterface
+  {
+  public:
+    GDOptimizer4thPartyComponent();
+    ~GDOptimizer4thPartyComponent();
+    Example4thParty::GDOptimizer4thParty* theImplementation;
+    Metric4thPartyWrapper* MetricObject;
+    int Set(MetricValueInterface*);
+    int Update();
+  };
+
+} //end namespace elx
+#endif // #define GDOptimizer4thPartyComponent_h
\ No newline at end of file

Modules/Core/ComponentInterface/Interfaces.hxx

+#ifndef Interfaces_hxx
+#define Interfaces_hxx
+
+#include "ComponentBase.h"
+
+namespace elx
+{
+// Define the providing interfaces abstractly
+class MetricDerivativeInterface {
+  public:
+    virtual int GetDerivative() = 0;
+};
+
+class MetricValueInterface {
+  public:
+    virtual int GetValue() = 0;
+};
+
+class OptimizerUpdateInterface {
+public:
+  virtual int Update() = 0;
+};
+
+// Define the accepting interfaces as templated by the providing interface
+
+template<class InterfaceT>
+class InterfaceAcceptor {
+public:
+  virtual int Set(InterfaceT*) = 0;
+  int Connect(ComponentBase*); 
+private:
+  bool isSet;
+};
+
+template<class InterfaceT>
+int InterfaceAcceptor<InterfaceT>::Connect(ComponentBase* providerComponent){
+
+    InterfaceT* providerInterface = dynamic_cast<InterfaceT*> (providerComponent);
+    if (!providerInterface)
+    {
+      std::cout << "providerComponent does not have required interface" << std::endl;
+      return 0;
+    }
+    // connect value interfaces
+    this->Set(providerInterface); // due to the input argument being uniquely defined in the multiple inheritance tree, all versions of Set() are accessible
+    return 1;
+  }
+
+} // end namespace elx
+#endif // #define Interfaces_hxx
\ No newline at end of file

Modules/Core/ComponentInterface/Metric3rdPartyWrapper.cxx

+#include "Metric3rdPartyWrapper.h"
+
+namespace elx
+{
+void Metric3rdPartyWrapper::SetMetricValueComponent(MetricValueInterface* metricValueComponent)
+{
+  this->metricval = metricValueComponent;
+}
+
+int Metric3rdPartyWrapper::GetValue()
+{
+  return this->metricval->GetValue();
+}
+
+void Metric3rdPartyWrapper::SetMetricDerivativeComponent(MetricDerivativeInterface* metricDerivativeComponent)
+{
+  this->metricderiv = metricDerivativeComponent;
+}
+
+int Metric3rdPartyWrapper::GetDerivative()
+{
+  return this->metricderiv->GetDerivative();
+}
+} // end namespace elx
\ No newline at end of file

Modules/Core/ComponentInterface/Metric3rdPartyWrapper.h

+#ifndef Metric3rdPartyWrapper_h
+#define Metric3rdPartyWrapper_h
+
+#include "Example3rdPartyCode.h"
+#include "Interfaces.hxx"
+namespace elx
+{
+// An Optimizer3rdParty expects that Metric3rdParty will be set as input. All accepted interfaces by the Optimizer3rdPartyCompoment will be delegated to the Metric3rdPartyWrapper object.
+  class Metric3rdPartyWrapper : public Example3rdParty::Metric3rdPartyBase  {
+public:
+  void SetMetricValueComponent(MetricValueInterface*);
+  void SetMetricDerivativeComponent(MetricDerivativeInterface*);
+  virtual int GetValue();
+  virtual int GetDerivative();
+private:
+  MetricValueInterface* metricval;
+  MetricDerivativeInterface* metricderiv;
+};
+} // end namespace elx
+#endif // #define Metric3rdPartyWrapper_h
\ No newline at end of file

Modules/Core/ComponentInterface/Metric4thPartyWrapper.cxx

+#include "Metric4thPartyWrapper.h"
+
+namespace elx
+{
+void Metric4thPartyWrapper::SetMetricValueComponent(MetricValueInterface* metricValueComponent)
+{
+  this->metricval = metricValueComponent;
+}
+
+int Metric4thPartyWrapper::GetCost()
+{
+  return this->metricval->GetValue();
+}
+
+} // end namespace elx
\ No newline at end of file

Modules/Core/ComponentInterface/Metric4thPartyWrapper.h

+#ifndef Metric4thPartyWrapper_h
+#define Metric4thPartyWrapper_h
+
+#include "Example4thPartyCode.h"
+#include "Interfaces.hxx"
+namespace elx
+{
+// An Optimizer4thParty expects that Metric4thParty will be set as input. All accepted interfaces by the Optimizer4thPartyCompoment will be delegated to the Metric4thPartyWrapper object.
+  class Metric4thPartyWrapper : public Example4thParty::Metric4thPartyBase  {
+public:
+  void SetMetricValueComponent(MetricValueInterface*);
+  virtual int GetCost();
+private:
+  MetricValueInterface* metricval;
+};
+} // end namespace elx
+#endif // #define Metric3rdPartyWrapper_h
\ No newline at end of file

Modules/Core/ComponentInterface/SSDMetric3rdPartyComponent.cxx

+#include "SSDMetric3rdPartyComponent.h"
+namespace elx
+{
+SSDMetric3rdPartyComponent::SSDMetric3rdPartyComponent()
+{
+  this->theImplementation = new Example3rdParty::SSDMetric3rdParty();
+}
+SSDMetric3rdPartyComponent::~SSDMetric3rdPartyComponent()
+{
+  delete this->theImplementation; 
+}
+
+int SSDMetric3rdPartyComponent::GetDerivative()
+{
+  return this->theImplementation->GetDerivative();
+};
+
+int SSDMetric3rdPartyComponent::GetValue()
+{
+  return this->theImplementation->GetValue();
+};
+} //end namespace elx
\ No newline at end of file

Modules/Core/ComponentInterface/SSDMetric3rdPartyComponent.h

+#ifndef SSDMetric3rdPartyComponent_h
+#define SSDMetric3rdPartyComponent_h
+
+#include "ComponentBase.h"
+#include "Interfaces.hxx"
+#include "Example3rdPartyCode.h"
+
+namespace elx
+{
+  // SSDMetric3rdPartyComponent provides a value and a derivative
+  class SSDMetric3rdPartyComponent : public ComponentBase, public MetricDerivativeInterface, public MetricValueInterface {
+  public:
+    SSDMetric3rdPartyComponent();
+    ~SSDMetric3rdPartyComponent();
+    Example3rdParty::SSDMetric3rdParty* theImplementation;
+    int GetValue();
+    int GetDerivative();
+  };
+} //end namespace elx
+#endif // #define SSDMetric3rdPartyComponent_h
\ No newline at end of file

Modules/Core/ComponentInterface/SSDMetric4thPartyComponent.cxx

+#include "SSDMetric4thPartyComponent.h"
+namespace elx
+{
+
+SSDMetric4thPartyComponent::SSDMetric4thPartyComponent()
+{
+  this->theImplementation = new Example4thParty::SSDMetric4thParty();
+}
+SSDMetric4thPartyComponent::~SSDMetric4thPartyComponent()
+{
+  delete this->theImplementation;
+}
+
+int SSDMetric4thPartyComponent::GetValue()
+{
+  return this->theImplementation->GetCost(); // translate method name
+};
+} //end namespace elx
\ No newline at end of file

Modules/Core/ComponentInterface/SSDMetric4thPartyComponent.h

+#ifndef SSDMetric4thPartyComponent_h
+#define SSDMetric4thPartyComponent_h
+
+#include "ComponentBase.h"
+#include "Interfaces.hxx"
+#include "Example4thPartyCode.h"
+
+namespace elx
+{
+  // SSDMetric4thPartyComponent provides only a value and not a derivative
+  class SSDMetric4thPartyComponent : public ComponentBase, public MetricValueInterface {
+  public:
+    SSDMetric4thPartyComponent();
+    ~SSDMetric4thPartyComponent();
+    Example4thParty::SSDMetric4thParty* theImplementation;
+    int GetValue();
+  };
+} //end namespace elx
+#endif // #define SSDMetric4thPartyComponent_h
\ No newline at end of file

Modules/Core/ComponentInterface/componenthandshake.cxx

-// multiple inheritance
 #include <iostream>
 
-// test case: there are two (slightly) incompatible codebases (i.e. 3rd party and 4th party!), each with an optimizer object and a metric object. 
+// test case: Assume there are two (slightly) incompatible codebases (i.e. 3rd party and 4th! party), each with an optimizer object and a metric object. The example classes of 3rd and 4th party code bases cannot be changed, but the wrapping is in our control.
 // goal: make elastix components of all objects and define a handshake that checks if connections can be made.
 
-/*************** below: example implementations of 3rd and 4th party code base (assume we cannot change that) *********************/
-class Metric3rdPartyBase{
-public:
-  virtual int GetValue() = 0;
-  virtual int GetDerivative() = 0;
-};
+#include "SSDMetric3rdPartyComponent.h"
+#include "GDOptimizer3rdPartyComponent.h"
+#include "SSDMetric4thPartyComponent.h"
+#include "GDOptimizer4thPartyComponent.h"
 
-class Optimizer3rdPartyBase{
-public:
-  virtual int SetMetric(Metric3rdPartyBase*) = 0;
-  virtual int Optimize() = 0;
-protected:
-  Metric3rdPartyBase* theMetric;
-};
-
-class Metric4rdPartyBase{
-public:
-  virtual int GetCost() = 0; // with different naming convention than 3rd party
-};
-
-class Optimizer4rdPartyBase{
-public:
-  virtual int SetMetric(Metric4rdPartyBase*) = 0;
-  virtual int DoOptimization() = 0; // with different naming convention than 3rd party
-protected:
-  Metric4rdPartyBase* theMetric;
-};
-
-class SSDMetric3rdParty : public Metric3rdPartyBase {
-public:
-  virtual int GetValue() { return 1; };
-  virtual int GetDerivative() { return 2; };
-};
-
-class GDOptimizer3rdParty : public Optimizer3rdPartyBase {
-public:
-  GDOptimizer3rdParty();
-  ~GDOptimizer3rdParty();
-  virtual int SetMetric(Metric3rdPartyBase*);
-  virtual int Optimize();
-};
-
-
-GDOptimizer3rdParty::GDOptimizer3rdParty()
-{
-  this->theMetric = nullptr;
-}
-GDOptimizer3rdParty::~GDOptimizer3rdParty()
-{
-}
-int GDOptimizer3rdParty::SetMetric(Metric3rdPartyBase* metric)
-{
-  this->theMetric = metric;
-  return 0;
-}
-int GDOptimizer3rdParty::Optimize()
-{
-  if (this->theMetric != nullptr)
-  {
-    std::cout << "GDOptimizer3rdParty->Optimize():" << std::endl;
-    std::cout << "  theMetric->GetValue():" << theMetric->GetValue() << std::endl;
-    std::cout << "  theMetric->GetDerivative():" << theMetric->GetDerivative() << std::endl;
-  }
-  return 0;
-}
-
-
-class SSDMetric4rdParty : public Metric4rdPartyBase {
-public:
-  virtual int GetCost() { return 3; };
-};
-
-class GDOptimizer4rdParty : public Optimizer4rdPartyBase {
-public:
-  GDOptimizer4rdParty();
-  ~GDOptimizer4rdParty();
-  virtual int SetMetric(Metric4rdPartyBase*);
-  virtual int DoOptimization();
-};
-
-GDOptimizer4rdParty::GDOptimizer4rdParty()
-{
-  this->theMetric = nullptr;
-}
-GDOptimizer4rdParty::~GDOptimizer4rdParty()
-{
-}
-int GDOptimizer4rdParty::SetMetric(Metric4rdPartyBase* metric)
-{