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import pymongo, copy, bson |
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from datetime import timedelta |
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from niprov.dependencies import Dependencies |
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class MongoRepository(object): |
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def __init__(self, dependencies=Dependencies()): |
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self.config = dependencies.getConfiguration() |
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self.factory = dependencies.getFileFactory() |
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self.pictures = dependencies.getPictureCache() |
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client = pymongo.MongoClient(self.config.database_url) |
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self.db = client.get_default_database() |
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def byLocation(self, locationString): |
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"""Get the provenance for a file at the given location. |
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In the case of a dicom series, this returns the provenance for the |
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series. |
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Args: |
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locationString (str): Location of the image file. |
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Returns: |
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dict: Provenance for one image file. |
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""" |
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record = self.db.provenance.find_one({'location':locationString}) |
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return self.inflate(record) |
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def byLocations(self, listOfLocations): |
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records = self.db.provenance.find({'location':{'$in':listOfLocations}}) |
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return [self.inflate(record) for record in records] |
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def getSeries(self, image): |
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"""Get the object that carries provenance for the series that the image |
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passed is in. |
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Args: |
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image (:class:`.DicomFile`): File that is part of a series. |
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Returns: |
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:class:`.DicomFile`: Image object that caries provenance for |
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the series. |
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""" |
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seriesUid = image.getSeriesId() |
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if seriesUid is None: |
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return None |
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record = self.db.provenance.find_one({'seriesuid':seriesUid}) |
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return self.inflate(record) |
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def add(self, image): |
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"""Add the provenance for one file to storage. |
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Args: |
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image (:class:`.BaseFile`): Image file to store. |
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""" |
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self.db.provenance.insert_one(self.deflate(image)) |
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def update(self, image): |
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"""Save changed provenance for this file.. |
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Args: |
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image (:class:`.BaseFile`): Image file that has changed. |
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""" |
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self.db.provenance.update({'location':image.location.toString()}, |
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self.deflate(image)) |
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def updateApproval(self, locationString, approvalStatus): |
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self.db.provenance.update({'location':locationString}, |
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{'$set': {'approval': approvalStatus}}) |
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def all(self): |
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"""Retrieve all known provenance from storage. |
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Returns: |
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list: List of provenance for known files. |
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""" |
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records = self.db.provenance.find() |
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return [self.inflate(record) for record in records] |
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def latest(self): |
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records = self.db.provenance.find().sort('added', -1).limit(20) |
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return [self.inflate(record) for record in records] |
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def statistics(self): |
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grps = self.db.provenance.aggregate( |
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[{'$group': |
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{ |
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'_id': None, |
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'totalsize': { '$sum': '$size' }, |
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'count': { '$sum': 1 } |
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} |
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}]) |
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groups = list(grps) |
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if len(list(groups)) == 0: |
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return {'count':0} |
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return list(groups)[0] |
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def byId(self, uid): |
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record = self.db.provenance.find_one({'id':uid}) |
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return self.inflate(record) |
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def byParents(self, listOfParentLocations): |
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records = self.db.provenance.find({'parents':{ |
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'$in':listOfParentLocations}}) |
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return [self.inflate(record) for record in records] |
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def inquire(self, query): |
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field = query.getFields()[0] |
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if field.all: |
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records = self.db.provenance.distinct(field.name) |
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return records |
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else: |
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records = self.db.provenance.find({field.name:field.value}) |
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return [self.inflate(record) for record in records] |
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def search(self, text): |
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searchfields = ['location','user','subject','project','protocol', |
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'transformation','technique','modality'] |
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indexspec = [(field, pymongo.TEXT) for field in searchfields] |
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self.db.provenance.create_index(indexspec, name='textsearch') |
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records = self.db.provenance.find({'$text':{'$search': text}}) |
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return [self.inflate(record) for record in records] |
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def deflate(self, img): |
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record = copy.deepcopy(img.provenance) |
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if 'duration' in record: |
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record['duration'] = record['duration'].total_seconds() |
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snapshotData = self.pictures.getBytes(for_=img) |
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if snapshotData: |
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record['_snapshot-data'] = bson.Binary(snapshotData) |
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return record |
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def inflate(self, record): |
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if record is None: |
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return None |
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if 'duration' in record: |
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record['duration'] = timedelta(seconds=record['duration']) |
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img = self.factory.fromProvenance(record) |
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if '_snapshot-data' in record: |
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self.pictures.keep(record['_snapshot-data'], for_=img) |
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return img |
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ilogue /
niprov
