DataManager.py @ 4a9786d8

Last change on this file since 4a9786d8 was f4a1433, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
Merge branch 'master' into ESS_GUI
Property mode set to `100644`
File size: 15.6 KB

Line
1	################################################################################
2	#This software was developed by the University of Tennessee as part of the
3	#Distributed Data Analysis of Neutron Scattering Experiments (DANSE)
4	#project funded by the US National Science Foundation.
5	#
6	#See the license text in license.txt
7	#
8	#copyright 2010, University of Tennessee
9	################################################################################
10	"""
11	This module manages all data loaded into the application. Data_manager makes
12	available all data loaded for the current perspective.
13
14	All modules "creating Data" posts their data to data_manager .
15	Data_manager make these new data available for all other perspectives.
16	"""
17	#
18	# REDUNDANT CLASS!!!
19	# ALL THE FUNCTIONALITY IS BEING MOVED TO GuiManager.py
20	#
21	import os
22	import copy
23	import logging
24	import json
25	import time
26	from StringIO import StringIO
27	import numpy as np
28
29	from sas.qtgui.Plotting.PlotterData import Data1D
30	from sas.qtgui.Plotting.PlotterData import Data2D
31	from sas.qtgui.Plotting.Plottables import Plottable
32	from sas.qtgui.Plotting.Plottables import PlottableTheory1D
33	from sas.qtgui.Plotting.Plottables import PlottableFit1D
34	from sas.qtgui.Plotting.Plottables import Text
35	from sas.qtgui.Plotting.Plottables import Chisq
36	from sas.qtgui.Plotting.Plottables import View
37
38	from sas.qtgui.Utilities import GuiUtils
39	from sas.qtgui.MainWindow.DataState import DataState
40	import sas.sascalc.dataloader.data_info as DataInfo
41
42	# used for import/export
43	from sas.sascalc.dataloader.data_info import Sample, Source, Vector
44
45	class DataManager(object):
46	"""
47	Manage a list of data
48	"""
49	def __init__(self):
50	"""
51	Store opened path and data object created at the loading time
52	:param auto_plot: if True the datamanager sends data to plotting
53	plugin.
54	:param auto_set_data: if True the datamanager sends to the current
55	perspective
56	"""
57	self.stored_data = {}
58	self.message = ""
59	self.data_name_dict = {}
60	self.count = 0
61	self.list_of_id = []
62	self.time_stamp = time.time()
63
64	def __str__(self):
65	_str = ""
66	_str += "No of states is %s \n" % str(len(self.stored_data))
67	n_count = 0
68	for value in self.stored_data.values():
69	n_count += 1
70	_str += "State No %s \n" % str(n_count)
71	_str += str(value) + "\n"
72	return _str
73
74	def create_gui_data(self, data, path=None):
75	"""
76	Receive data from loader and create a data to use for guiframe
77	"""
78
79	if issubclass(Data2D, data.__class__):
80	new_plot = Data2D(image=None, err_image=None)
81	else:
82	new_plot = Data1D(x=[], y=[], dx=None, dy=None)
83
84	new_plot.copy_from_datainfo(data)
85	data.clone_without_data(clone=new_plot)
86	#creating a name for data
87	title = ""
88	file_name = os.path.basename(path) if path is not None else os.path.basename(data.filename)
89	if file_name:
90	name = file_name
91	elif data.run:
92	name = data.run[0]
93	else:
94	name = "data"
95	name = self.rename(name)
96	#find title
97	if data.title.strip():
98	title = data.title
99	if title.strip() == "":
100	title = file_name
101
102	stripped_filename = new_plot.filename.strip()
103	if not stripped_filename:
104	new_plot.filename = file_name
105	if stripped_filename != os.path.basename(stripped_filename):
106	new_plot.filename = file_name
107
108	new_plot.name = name
109	new_plot.title = title
110	## allow to highlight data when plotted
111	new_plot.interactive = True
112	## when 2 data have the same id override the 1 st plotted
113	self.time_stamp += 1
114	new_plot.id = str(name) + str(self.time_stamp)
115	##group_id specify on which panel to plot this data
116	new_plot.group_id = str(name) + str(self.time_stamp)
117	new_plot.is_data = True
118	new_plot.path = path
119	new_plot.list_group_id = []
120	##post data to plot
121	# plot data
122	return new_plot
123
124	def rename(self, name):
125	"""
126	rename data
127	"""
128	## name of the data allow to differentiate data when plotted
129	name = GuiUtils.parseName(name=name, expression="_")
130
131	max_char = name.find("[")
132	if max_char < 0:
133	max_char = len(name)
134	name = name[0:max_char]
135
136	if name not in self.data_name_dict:
137	self.data_name_dict[name] = 0
138	else:
139	self.data_name_dict[name] += 1
140	name = name + " [" + str(self.data_name_dict[name]) + "]"
141	return name
142
143
144	def add_data(self, data_list):
145	"""
146	receive a list of
147	"""
148	for id, data in data_list.iteritems():
149	if id in self.stored_data:
150	msg = "Data manager already stores %s" % str(data.name)
151	msg += ""
152	logging.info(msg)
153	data_state = self.stored_data[id]
154	data_state.data = data
155	else:
156	data_state = DataState(data)
157	data_state.id = id
158	data_state.path = data.path
159	self.stored_data[id] = data_state
160
161	def update_data(self, prev_data, new_data):
162	"""
163	"""
164	if prev_data.id not in self.stored_data.keys():
165	return None, {}
166	data_state = self.stored_data[prev_data.id]
167	self.stored_data[new_data.id] = data_state.clone()
168	self.stored_data[new_data.id].data = new_data
169	if prev_data.id in self.stored_data.keys():
170	del self.stored_data[prev_data.id]
171	return prev_data.id, {new_data.id: self.stored_data[new_data.id]}
172
173	def update_theory(self, theory, data_id=None, state=None):
174	"""
175	"""
176	uid = data_id
177	if data_id is None and theory is not None:
178	uid = theory.id
179	if uid in self.stored_data.keys():
180	data_state = self.stored_data[uid]
181	else:
182	data_state = DataState()
183	data_state.uid = uid
184	data_state.set_theory(theory_data=theory, theory_state=state)
185	self.stored_data[uid] = data_state
186	return {uid: self.stored_data[uid]}
187
188
189	def get_message(self):
190	"""
191	return message
192	"""
193	return self.message
194
195	def get_by_id(self, id_list=None):
196	"""
197	"""
198	_selected_data = {}
199	_selected_theory_list = {}
200	if id_list is None:
201	return
202	for d_id in self.stored_data:
203	for search_id in id_list:
204	data_state = self.stored_data[d_id]
205	data = data_state.data
206	theory_list = data_state.get_theory()
207	if search_id == d_id:
208	_selected_data[search_id] = data
209	if search_id in theory_list.keys():
210	_selected_theory_list[search_id] = theory_list[search_id]
211
212	return _selected_data, _selected_theory_list
213
214
215	def freeze(self, theory_id):
216	"""
217	"""
218	return self.freeze_theory(self.stored_data.keys(), theory_id)
219
220	def freeze_theory(self, data_id, theory_id):
221	"""
222	"""
223	selected_theory = {}
224	for d_id in data_id:
225	if d_id in self.stored_data:
226	data_state = self.stored_data[d_id]
227	theory_list = data_state.get_theory()
228	for t_id in theory_id:
229	if t_id in theory_list.keys():
230	theory_data, theory_state = theory_list[t_id]
231	new_theory = copy.deepcopy(theory_data)
232	new_theory.id = time.time()
233	new_theory.is_data = True
234	new_theory.name += '_@' + \
235	str(new_theory.id)[7:-1].replace('.', '')
236	new_theory.title = new_theory.name
237	new_theory.label = new_theory.name
238	selected_theory[new_theory.id] = DataState(new_theory)
239	self.stored_data[new_theory.id] = \
240	selected_theory[new_theory.id]
241
242	return selected_theory
243
244
245	def delete_data(self, data_id, theory_id=None, delete_all=False):
246	"""
247	"""
248	for d_id in data_id:
249	if d_id in self.stored_data.keys():
250	data_state = self.stored_data[d_id]
251	if data_state.data.name in self.data_name_dict:
252	del self.data_name_dict[data_state.data.name]
253	del self.stored_data[d_id]
254
255	self.delete_theory(data_id, theory_id)
256	if delete_all:
257	self.stored_data = {}
258	self.data_name_dict = {}
259
260	def delete_theory(self, data_id, theory_id):
261	"""
262	"""
263	for d_id in data_id:
264	if d_id in self.stored_data:
265	data_state = self.stored_data[d_id]
266	theory_list = data_state.get_theory()
267	if theory_id in theory_list.keys():
268	del theory_list[theory_id]
269	#del pure theory
270	self.delete_by_id(theory_id)
271
272	def delete_by_id(self, id_list=None):
273	"""
274	save data and path
275	"""
276	for id in id_list:
277	if id in self.stored_data:
278	del self.stored_data[id]
279
280	def get_by_name(self, name_list=None):
281	"""
282	return a list of data given a list of data names
283	"""
284	_selected_data = {}
285	for selected_name in name_list:
286	for id, data_state in self.stored_data.iteritems():
287	if data_state.data.name == selected_name:
288	_selected_data[id] = data_state.data
289	return _selected_data
290
291	def delete_by_name(self, name_list=None):
292	"""
293	save data and path
294	"""
295	for selected_name in name_list:
296	for id, data_state in self.stored_data.iteritems():
297	if data_state.data.name == selected_name:
298	del self.stored_data[id]
299
300	def update_stored_data(self, name_list=None):
301	""" update stored data after deleting files in Data Explorer """
302	for selected_name in name_list:
303	# Take the copy of current, possibly shorter stored_data dict
304	stored_data = copy.deepcopy(self.stored_data)
305	for idx in stored_data.keys():
306	if str(selected_name) in str(idx):
307	del self.stored_data[idx]
308
309	def get_data_state(self, data_id):
310	"""
311	Send list of selected data
312	"""
313	_selected_data_state = {}
314	for id in data_id:
315	if id in self.stored_data.keys():
316	_selected_data_state[id] = self.stored_data[id]
317	return _selected_data_state
318
319	def get_all_data(self):
320	"""
321	return list of all available data
322	"""
323	return self.stored_data
324
325	def assign(self, other):
326	self.stored_data = other.stored_data
327	self.message = other.message
328	self.data_name_dict = other.data_name_dict
329	self.count = other.count
330	self.list_of_id = other.list_of_id
331	self.time_stamp = other.time_stamp
332
333	def save_to_writable(self, fp):
334	"""
335	save content of stored_data to fp (a .write()-supporting file-like object)
336	"""
337
338	def add_type(dict, type):
339	dict['__type__'] = type.__name__
340	return dict
341
342	def jdefault(o):
343	"""
344	objects that can't otherwise be serialized need to be converted
345	"""
346	# tuples and sets (TODO: default JSONEncoder converts tuples to lists, create custom Encoder that preserves tuples)
347	if isinstance(o, (tuple, set)):
348	content = { 'data': list(o) }
349	return add_type(content, type(o))
350
351	# "simple" types
352	if isinstance(o, (Sample, Source, Vector)):
353	return add_type(o.__dict__, type(o))
354	if isinstance(o, (Plottable, View)):
355	return add_type(o.__dict__, type(o))
356
357	# DataState
358	if isinstance(o, DataState):
359	# don't store parent
360	content = o.__dict__.copy()
361	content.pop('parent')
362	return add_type(content, type(o))
363
364	# ndarray
365	if isinstance(o, np.ndarray):
366	buffer = StringIO()
367	np.save(buffer, o)
368	buffer.seek(0)
369	content = { 'data': buffer.read().decode('latin-1') }
370	return add_type(content, type(o))
371
372	# not supported
373	logging.info("data cannot be serialized to json: %s" % type(o))
374	return None
375
376	json.dump(self.stored_data, fp, indent=2, sort_keys=True, default=jdefault)
377
378
379	def load_from_readable(self, fp):
380	"""
381	load content from tp to stored_data (a .read()-supporting file-like object)
382	"""
383
384	supported = [
385	tuple, set,
386	Sample, Source, Vector,
387	Plottable, Data1D, Data2D, PlottableTheory1D, PlottableFit1D, Text, Chisq, View,
388	DataState, np.ndarray]
389
390	lookup = dict((cls.__name__, cls) for cls in supported)
391
392	class TooComplexException(Exception):
393	pass
394
395	def simple_type(cls, data, level):
396	class Empty(object):
397	def __init__(self):
398	for key, value in data.iteritems():
399	setattr(self, key, generate(value, level))
400
401	# create target object
402	o = Empty()
403	o.__class__ = cls
404
405	return o
406
407	def construct(type, data, level):
408	try:
409	cls = lookup[type]
410	except KeyError:
411	logging.info('unknown type: %s' % type)
412	return None
413
414	# tuples and sets
415	if cls in (tuple, set):
416	# convert list to tuple/set
417	return cls(generate(data['data'], level))
418
419	# "simple" types
420	if cls in (Sample, Source, Vector):
421	return simple_type(cls, data, level)
422	if issubclass(cls, Plottable) or (cls == View):
423	return simple_type(cls, data, level)
424
425	# DataState
426	if cls == DataState:
427	o = simple_type(cls, data, level)
428	o.parent = None # TODO: set to ???
429	return o
430
431	# ndarray
432	if cls == np.ndarray:
433	buffer = StringIO()
434	buffer.write(data['data'].encode('latin-1'))
435	buffer.seek(0)
436	return np.load(buffer)
437
438	logging.info('not implemented: %s, %s' % (type, cls))
439	return None
440
441	def generate(data, level):
442	if level > 16: # recursion limit (arbitrary number)
443	raise TooComplexException()
444	else:
445	level += 1
446
447	if isinstance(data, dict):
448	try:
449	type = data['__type__']
450	except KeyError:
451	# if dictionary doesn't have __type__ then it is assumed to be just an ordinary dictionary
452	o = {}
453	for key, value in data.iteritems():
454	o[key] = generate(value, level)
455	return o
456
457	return construct(type, data, level)
458
459	if isinstance(data, list):
460	return [generate(item, level) for item in data]
461
462	return data
463
464	new_stored_data = {}
465	for id, data in json.load(fp).iteritems():
466	try:
467	new_stored_data[id] = generate(data, 0)
468	except TooComplexException:
469	logging.info('unable to load %s' % id)
470
471	self.stored_data = new_stored_data
472

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SasView

source: sasview/src/sas/qtgui/MainWindow/DataManager.py @ 4a9786d8

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