class TQAlgorithm: public TQNamedTaggable

 TQAlgorithm

 The TQAlgorithm class is a hook in order to precompute arbitrary
 event-based quantities and cache their values. The entire list of
 algorithms is executed on every event.

 every algorithm should implement the initialize, finalize and execute and cleanup methods.
 initialize will be called at the beginning of every sample and will take the sample as an argument
 finalize, execute and cleanup will not receive arguments and are called
 at the end of each sample (finalize), before each event (execute) and after each
 event (cleanup).
 All four functions should return true in case of success, false in case of failure
 failure of any algorithm will cause the event loop to halt,
 additional error handling may be done by raising exceptions.

 All input/output managing is entirely up to the user and may be
 done via filling the TStore, creating decorations to objects in
 the TEvent or any other available operation.

 Please note that for use of TQAlgorithms with the TQMultiChannelAnalysisSampleVisitor
 must be streamable, i.e., correctly work with the TObject::Clone() method. This implies
 that all transient members (typically marked with the '//!' suffix in the header file)
 must be set in the 'TQAlgorithm::initialize(TQSample* s)' method! This also applies to
 TQAlgorithms which are supposedly singletons (i.e. returning 'true' in TQAlgorithm::isSingleton())
 for which 'TQAlgorithm::initializeSingleton(const std::vector<TQSample*>& samples)' should
 take the place of 'initialize(TQSample* s)'.
 If an implementation of an algorithm is marked as a singleton but should still be useable
 with SCASV as well as MCASV (or similar classes) BOTH initialization methods must be
 overridden!