G4OCCTAssemblyRegistry Class Reference

Singleton registry for named G4OCCTAssemblyVolume instances. More...

#include <G4OCCTAssemblyRegistry.hh>

Public Member Functions
void	Register (const std::string &name, G4OCCTAssemblyVolume *assembly)
G4OCCTAssemblyVolume *	Get (const std::string &name) const
G4OCCTAssemblyVolume *	Release (const std::string &name)
std::size_t	Size () const

Static Public Member Functions
static G4OCCTAssemblyRegistry &	Instance ()
	Return the singleton instance.

Detailed Description

Singleton registry for named G4OCCTAssemblyVolume instances.

Stores heap-allocated G4OCCTAssemblyVolume objects by name and takes ownership of them. This is primarily used by the DD4hep plugin to keep assemblies alive past the plugin build phase, where local variables would otherwise be destroyed too early.

Ownership

The registry owns all registered assemblies. They are deleted when Release() is called or when the registry is destroyed.

Usage

auto* assembly = G4OCCTAssemblyVolume::FromSTEP("detector.step", matMap);
G4OCCTAssemblyRegistry::Instance().Register("myDetector", assembly);
 
// Later:
G4OCCTAssemblyVolume* a = G4OCCTAssemblyRegistry::Instance().Get("myDetector");

Definition at line 38 of file G4OCCTAssemblyRegistry.hh.

Member Function Documentation

Get()

G4OCCTAssemblyVolume * G4OCCTAssemblyRegistry::Get

(

const std::string &

name

)

const

Retrieve an assembly by name.

Parameters

name	Assembly name as passed to Register().

Returns

Pointer to the assembly, or nullptr if not found.

Definition at line 35 of file G4OCCTAssemblyRegistry.cc.

Referenced by G4OCCTAssemblySDSetup::Apply().

Instance()

G4OCCTAssemblyRegistry & G4OCCTAssemblyRegistry::Instance ( )

static

Return the singleton instance.

Definition at line 13 of file G4OCCTAssemblyRegistry.cc.

Referenced by G4OCCTAssemblySDSetup::Apply(), and G4OCCT_ImportSTEPAssembly().

Register()

void G4OCCTAssemblyRegistry::Register	(	const std::string &	name,
		G4OCCTAssemblyVolume *	assembly
	)

Register a named assembly (takes ownership).

Parameters

name	Unique name for this assembly.
assembly	Non-null pointer to the assembly to register.

Exceptions

std::runtime_error

if name is already registered.

Definition at line 24 of file G4OCCTAssemblyRegistry.cc.

Referenced by G4OCCT_ImportSTEPAssembly().

Release()

G4OCCTAssemblyVolume * G4OCCTAssemblyRegistry::Release

(

const std::string &

name

)

Remove an assembly from the registry and return ownership to the caller.

Parameters

name	Assembly name to release.

Returns

The previously registered pointer, or nullptr if not found. The caller is responsible for deleting the returned object.

Definition at line 40 of file G4OCCTAssemblyRegistry.cc.

Size()

std::size_t G4OCCTAssemblyRegistry::Size

(

)

const

Return the number of registered assemblies.

Definition at line 50 of file G4OCCTAssemblyRegistry.cc.

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The documentation for this class was generated from the following files:

• include/G4OCCT/G4OCCTAssemblyRegistry.hh
• src/G4OCCTAssemblyRegistry.cc