| RDF-Core documentation | Contained in the RDF-Core distribution. |
RDF::Core::Storage - An abstract ancestor of storage implementations
Storage is the place where statements reside. It can add, remove, count and get statements and ask about their existence.
Options depend on implementation of descendant. (Such as RDF::Core::Storage::Memory, RDF::Core::Storage::DB_File, RDF::Core::Storage::Postgres.)
Add RDF::Core::Statement instance to the storage, unless it already exists there.
Remove statement from the storage, if it's there.
Check if statement exists, that matches given mask. Parameters can be undefined, every value matches undefined parameter.
Count matching statements.
Retrieve matching statements. Returns RDF::Core::Enumerator object. (One of it's descendants.)
This package is subject to the MPL (or the GPL alternatively).
Ginger Alliance, rdf@gingerall.cz
RDF::Core::Storage::Memory, RDF::Core::Storage::DB_File, RDF::Core::Storage::Postgres
| RDF-Core documentation | Contained in the RDF-Core distribution. |
# # The contents of this file are subject to the Mozilla Public # License Version 1.1 (the "License"); you may not use this file # except in compliance with the License. You may obtain a copy of # the License at http://www.mozilla.org/MPL/ # # Software distributed under the License is distributed on an "AS # IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or # implied. See the License for the specific language governing # rights and limitations under the License. # # The Original Code is the RDF::Core module # # The Initial Developer of the Original Code is Ginger Alliance Ltd. # Portions created by Ginger Alliance are # Copyright (C) 2001 Ginger Alliance Ltd. # All Rights Reserved. # # Contributor(s): # # Alternatively, the contents of this file may be used under the # terms of the GNU General Public License Version 2 or later (the # "GPL"), in which case the provisions of the GPL are applicable # instead of those above. If you wish to allow use of your # version of this file only under the terms of the GPL and not to # allow others to use your version of this file under the MPL, # indicate your decision by deleting the provisions above and # replace them with the notice and other provisions required by # the GPL. If you do not delete the provisions above, a recipient # may use your version of this file under either the MPL or the # GPL. # package RDF::Core::Storage; use strict; require Exporter; use Carp; sub new { carp "Pure virtual function call."; } sub addStmt { carp "Pure virtual function call."; } sub removeStmt { carp "Pure virtual function call."; } sub existsStmt { carp "Pure virtual function call."; } sub getStmts { carp "Pure virtual function call."; } sub countStmts { carp "Pure virtual function call."; } 1; __END__