kiokudb::typemap::entry::compiled(3pm) [debian man page]

KiokuDB::TypeMap::Entry::Compiled(3pm)			User Contributed Perl Documentation		    KiokuDB::TypeMap::Entry::Compiled(3pm)

NAME

       KiokuDB::TypeMap::Entry::Compiled - Object for storing collapse/expand methods

SYNOPSIS

       TODO

DESCRIPTION

       Objects of this class should be returned by "compile" in KiokuDB::TypeMap::Entry.  You probably shouldn't be using this directly; you may
       just want to consume KiokuDB::TypeMap::Entry::Std or something.

ATTRIBUTES

       expand_method
	   Contains a subroutine reference (or a string, denoting a method name).  It is called as method on the KiokuDB::Linker.  Takes a
	   KiokuDB::Entry as an argument, and should return the expanded object.

       collapse_method
	   Contains a subroutine reference (or a string, denoting a method name).  It is called as method on the KiokuDB::Collapser.  Takes the
	   object to be collapsed as an argument, and should return a KiokuDB::Reference.

       id_method
	   Contains a subroutine reference (or a string, denoting a method name).  It is called as method on the KiokuDB::Collapser.  Takes the
	   object to be collapsed as an argument, and should return an ID for it .

       refresh_method
	   Contains a subroutine reference (or a string, denoting a method name).  It is called as method on the KiokuDB::Linker.  Takes the
	   object to be refreshed and its corresponding KiokuDB::Entry as arguments.

       class
	   The class for which the methods are being compiled.

       entry
	   The KiokuDB::TypeMap::Entry that created this object.

perl v5.12.4							    2010-10-18				    KiokuDB::TypeMap::Entry::Compiled(3pm)

KiokuDB::Linker(3pm)					User Contributed Perl Documentation				      KiokuDB::Linker(3pm)

NAME

       KiokuDB::Linker - Relinks live objects from storage entries

SYNOPSIS

	   # mostly internal

DESCRIPTION

       The linker reconnects entry data, recreating the connected object graph in memory.

       The linkage process starts with an ID (or several IDs) to be loaded passed to the "get_or_load_objects" method.

       This ID will first be searched for in the live object set (KiokuDB::LiveObjects). If the object is already live, then it will be returned
       as is.

       If the object is not live, then the corresponding entry is fetched from the backend, and expanded into an actual instance.

       Expansion consults the KiokuDB::TypeMap using KiokuDB::TypeMap::Resolver, to find the correct typemap entry (see "COLLAPSING STRATEGIES" in
       KiokuDB::Collapser and KiokuDB::TypeMap), and that is used for the actual expansion.

       Most of the grunt work is delegated by the entries back to the linker using the "inflate_data" method, which handles circular structures,
       retrying of tied structures, etc.

       Inflated objects are registered with KiokuDB::LiveObjects, and get inserted into the current live object scope
       (KiokuDB::LiveObjects::Scope). The scope's job is to maintain a reference count of at least 1 for any loaded object, until it is destroyed
       itself. This ensures that weak references are not destroyed prematurely, but allows their use in order to avoid memory leaks.

perl v5.12.4							    2010-10-11						      KiokuDB::Linker(3pm)