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CdbBdbEnvProxy< T, P > Class Template Reference

Straightforward implementation for the proxy class. More...

#include <CdbBdbEnvProxy.hh>

Inheritance diagram for CdbBdbEnvProxy< T, P >:

List of all members.

Public Member Functions
	CdbBdbEnvProxy (const char *theDetectorName, const char *theConditionName, BdbCondDefStrategy *theStrategy=0)
	The normal and default constructor.
virtual	~CdbBdbEnvProxy ()
	The destructor.
Protected Member Functions
virtual T *	redefinedFaultHandler (const std::vector< CdbBdbProxyElement > &listOfElements)
	The redefined fault handler.

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Detailed Description

template<class T, class P>
class CdbBdbEnvProxy< T, P >

Straightforward implementation for the proxy class.

Class CdbBdbEnvProxy

This is a straightforward 1-to-1 proxy implementation assuming that there is a simple conversion from a persistent class to a transient one.

The proxy class is parametrized by mean of two template parameters:

T - is a transient class representing a proxy product P - a persistent class representing a data source

In order to do the "persistent-to-transient" conversion the persistent class 'P' is expected to expose the following minimal interface:

class P : public ... BdbObject { public: T* transient( ) const; };

Comments:

• the type 'T' must match the first template parameter of the proxy.

• the type 'P' must be either direct or indirect subclass of the 'BdbObject' class

• if there is a hierarchy of persistent classes deriving from the common base class and if this base class defines the above mentioned "transient" method as the virtual one then the base class type can be used as the 'P' instead of any of its subclasses.

• make sure that you have loaded the v-tables for thoses persistent classes whose objects are loaded through this proxy.

Any incompatibility will be catched during template instantiation time.

Definition at line 48 of file CdbBdbEnvProxy.hh.

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Constructor & Destructor Documentation

template<class T, class P> CdbBdbEnvProxy< T, P >::CdbBdbEnvProxy (  const char *    theDetectorName, const char *    theConditionName, BdbCondDefStrategy *    theStrategy = 0 )

The normal and default constructor. The only optional argument of the constructor takes the strategy object for locating GenEnv parameters. If 0 pointer is passed then a default strategy will be enforced. Note, that the ownreship of the strategy object is also passed to the constructor. Definition at line 22 of file CdbBdbEnvProxy.cc. References CdbBdbProxyCache::subscribeCondition().

template<class T, class P> CdbBdbEnvProxy< T, P >::~CdbBdbEnvProxy (    )  [virtual]

The destructor. Definition at line 41 of file CdbBdbEnvProxy.cc.

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Member Function Documentation

template<class T, class P> T * CdbBdbEnvProxy< T, P >::redefinedFaultHandler (  const std::vector< CdbBdbProxyElement > &    listOfElements )  [protected, virtual]

The redefined fault handler. Implements the method of a base class. See also: CdbBdbProxyBase::redefinedFaultHandler Implements CdbBdbProxyBase< T >. Definition at line 46 of file CdbBdbEnvProxy.cc. References BdbRef(), and CdbTimeUtils::time2string().

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

• CdbBdbEnvProxy.hh
• CdbBdbEnvProxy.cc

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