def revision_get_documents(revision_id=None,
include_history=True,
unique_only=True,
session=None,
**filters):
"""Return the documents that match filters for the specified `revision_id`.
:param revision_id: The ID corresponding to the ``Revision`` object. If the
ID is ``None``, then retrieve the latest revision, if one exists.
:param include_history: Return all documents for revision history prior
and up to current revision, if ``True``. Default is ``True``.
:param unique_only: Return only unique documents if ``True. Default is
``True``.
:param filters: Dictionary attributes (including nested) used to filter
out revision documents.
:param session: Database session object.
:param filters: Key-value pairs used for filtering out revision documents.
:returns: All revision documents for ``revision_id`` that match the
``filters``, including document revision history if applicable.
:raises: RevisionNotFound if the revision was not found.
"""
session = session or get_session()
revision_documents = []
try:
if revision_id:
revision = session.query(models.Revision)\
.filter_by(id=revision_id)\
.one()
else:
# If no revision_id is specified, grab the latest one.
revision = session.query(models.Revision)\
.order_by(models.Revision.created_at.desc())\
.first()
revision_documents = (revision.to_dict()['documents']
if revision else [])
if include_history and revision:
older_revisions = session.query(models.Revision)\
.filter(models.Revision.created_at < revision.created_at)\
.order_by(models.Revision.created_at)\
.all()
# Include documents from older revisions in response body.
for older_revision in older_revisions:
revision_documents.extend(
older_revision.to_dict()['documents'])
except sa_orm.exc.NoResultFound:
raise errors.RevisionNotFound(revision=revision_id)
revision_documents = _update_revision_history(revision_documents)
filtered_documents = _filter_revision_documents(revision_documents,
unique_only, **filters)
return filtered_documents
def revision_get(revision_id=None, session=None):
"""Return the specified `revision_id`.
:param revision_id: The ID corresponding to the ``Revision`` object.
:param session: Database session object.
:returns: Dictionary representation of retrieved revision.
:raises RevisionNotFound: if the revision was not found.
"""
session = session or get_session()
try:
revision = session.query(models.Revision)\
.filter_by(id=revision_id)\
.one()\
.to_dict()
except sa_orm.exc.NoResultFound:
raise errors.RevisionNotFound(revision_id=revision_id)
revision['documents'] = _update_revision_history(revision['documents'])
return revision
def revision_get_latest(session=None):
"""Return the latest revision.
:param session: Database session object.
:returns: Dictionary representation of latest revision.
:raises RevisionNotFound: if the latest revision was not found.
"""
session = session or get_session()
latest_revision = session.query(models.Revision)\
.order_by(models.Revision.created_at.desc())\
.first()
if not latest_revision:
raise errors.RevisionNotFound(revision='latest')
latest_revision = latest_revision.to_dict()
latest_revision['documents'] = _update_revision_history(
latest_revision['documents'])
return latest_revision
