redis_triplestore

Implements a triplestore using Redis to store relations, in Python.

Requires Redis 2.0+, newest version of redis-py and redis_wrap.

redis-py can be downloaded from here: * http://github.com/andymccurdy/redis-py

Note that you can use the requirements.txt file to install dependencies with pip.

Examples

Atribution:

FOAF = Namespace('http://xmlns.com/foaf/0.1/')

frodo = Resource('http://example.com/comte/frodo', **{
    FOAF.name: 'Frodo',
    FOAF.familyName: 'Baggins',
})
assert frodo[FOAF.name] == 'Frodo'

Persistence:

frodo = Resource('http://example.com/comte/frodo')
assert frodo[FOAF.name] == 'Frodo'

gandalf = Resource('http://example.com/wizards/gandalf', **{
    FOAF.name: 'Gandalf',
    FOAF.familyName: 'the White',
})
saruman = Resource('http://example.com/wizards/saruman', **{
    FOAF.name: 'Saruman',
    FOAF.familyName: 'of Many Colors',
})

Relations:

frodo.add_relation(FOAF.knows, gandalf)
assert frodo.relations(FOAF.knows) == [gandalf]
gandalf.add_relation(FOAF.knows, saruman)
assert gandalf.relations(FOAF.knows) == [saruman]
assert gandalf.reversed_relations(FOAF.knows) == [frodo]
frodo.add_relation(FOAF.knows, saruman)
assert frodo.relations(FOAF.knows) == [gandalf, saruman]

Clean up:

frodo.delete_relation(FOAF.knows, saruman)
assert frodo.relations(FOAF.knows) == [gandalf]
frodo.delete_relation(FOAF.knows, gandalf)
gandalf.delete_relation(FOAF.knows, saruman)
assert gandalf.relations(FOAF.knows) == []
assert gandalf.reversed_relations(FOAF.knows) == []
frodo.remove()
gandalf.remove()
saruman.remove()
assert frodo[FOAF.name] == None

Copyright: 2010 by David Larlet License: BSD.