gitgraph 0.1.1

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Instalation

pip install gitgraph

Declaring Subjects

from gitgraph import GitGraph
from gitgraph import Subject

store = GitGraph('my-git-cms')

class Document(Subject):
    indexes = {'title'}
    predicates = (
        ('title', codec.Unicode),
        ('body', codec.Unicode),
        ('created_at', codec.DateTime),
        ('published_at', codec.DateTime),
    )

    incoming = {
        'authored_by': Author,
    }
    outgoing = {
        'contains': Tag,
    }

Create

uuid1 = 'deadbeefdeadbeefdeadbeefdeadbeef'

# providing your own uuid
docs1 = store.create(
    'Document',
    uuid=uuid1,
    title='Essay',
    body='body1',
)

# auto-generated uuid
docs2 = store.create(
    Document,
    title='Blog',
    body='body2',
)

store.commit()

uuid2 = docs2.uuid

Retrieve

One By UUID

# Using the class Document as subject type
docs1 = store.get_subject_by_uuid(Document, uuid1)

# Using the subject label
docs2 = store.get_subject_by_uuid('Document', uuid2)

Many By Indexed Predicate

from gitgraph.query import predicate
# functional
query = lambda title: 'Blog' in title

# DSL
query = predicate('title').contains('Blog')
blog_documents = set(store.match_subjects_by_index(Document, 'title', query))

# With Regex
query = predicate('title').matches('([Bb]log|[Ee]ssa[yi]s?)')
blogs_and_essays = set(store.match_subjects_by_index(Document, 'title', query))

Update

docs1.title = 'new title'

docs2.title = 'documento dois'
docs2.body = '<p>Hello</p>'

store.merge(docs1, docs2)

# recreate the doc1
docs1 = store.create(
    Document,
    uuid=uuid1,
    title='Essay',
    body='body1',
)

Delete

store.delete(docs1)
store.commit()