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* annotations.py: The Annotations class now work. Querying along any

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axis is supported, but only two dimensional Annotations can be created.
This commit is contained in:
Einar Ryeng
2006-04-16 23:30:01 +00:00
parent 23fb12f53a
commit 4bdeef05f6
2 changed files with 59 additions and 14 deletions
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60
system/annotations.py
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@@ -1,33 +1,65 @@
import logger
from sets import Set as set
set.update = set.union_update
class AnnotationsException(Exception):
pass
class Annotations:
def __init__(self, *dimensions):
""" Initializes a new Annotation with the given dimension labels.
dimensions is a list of dimension labels.
"""
if len(dimensions) == 2:
logger.log('error', 'Annotations only supports two dimensions.')
if len(dimensions) != 2:
msg = 'Annotations only supports two dimensions.'
raise AnnotationsException(msg)
self.dimensions = {}
for d in dimensions:
self.dimensions[d] = {}
def add_annotations(self, dim, id, ann_dim, annotations):
if not self.dimensions[dim]:
logger.log('warning', 'Annotations object does not contain dimension %s' % dim)
return None
""" Adds new annotations.
dim: the dimension in which the new data should be added.
id: the identifier that should be annotated.
ann_dim: the dimension of the annotations to id.
annotations: the new annotations to id.
Returns the total set of annotations to id.
"""
if not self.has_dimension(dim):
msg = 'Annotations object does not contain dimension %s' % dim
raise AnnotationsException(msg)
if not self.has_dimension(ann_dim):
msg = 'Annotations object does not contain dimension %s' % ann_dim
raise AnnotationsException(msg)
for a in annotations:
self.annotations[ann_dim][a].add(id)
self.annotations[dim][id] = annotations
if not self.dimensions[ann_dim].has_key(a):
self.dimensions[ann_dim][a] = set()
self.dimensions[ann_dim][a].add(id)
if not self.dimensions[dim].has_key(id):
self.dimensions[dim][id] = set()
self.dimensions[dim][id].update(annotations)
return self.dimensions[dim][id]
def get_annotations(self, dim, id):
if not self.dimensions[dim]:
logger.log('warning', 'Annotations object does not contain dimension %s' % dim)
return None
def get_annotations(self, dim, id, ann_dim):
"""Returns all annotations to id.
dim: the dimension where id can be found.
id: the id to retrieve annotations for.
"""
if not self.has_dimension(dim):
msg = 'Annotations object does not contain dimension %s' % dim
raise AnnotationsException(msg)
if self.dimensions[dim].has_key(id):
return self.dimensions[dim][id].values()
return None
return self.dimensions[dim][id]
return set()
def has_dimension(self, dim):
""" Retuns true if the Annotations object indexes dim.
"""
return self.dimensions.has_key(dim)