DataManager.py

ESS_GUI

Last change on this file was 345b3b3, checked in by Piotr Rozyczko <piotr.rozyczko@…>, 6 years ago
Save status of data explorer
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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 io import BytesIO
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 PlottableTheory1D
32	from sas.qtgui.Plotting.Plottables import PlottableFit1D
33	from sas.qtgui.Plotting.Plottables import Text
34	from sas.qtgui.Plotting.Plottables import Chisq
35	from sas.qtgui.Plotting.Plottables import View
36
37	from sas.qtgui.Utilities import GuiUtils
38	from sas.qtgui.MainWindow.DataState import DataState
39	import sas.sascalc.dataloader.data_info as DataInfo
40
41	# used for import/export
42	from sas.sascalc.dataloader.data_info import Sample, Source, Vector
43
44	class DataManager(object):
45	"""
46	Manage a list of data
47	"""
48	def __init__(self):
49	"""
50	Store opened path and data object created at the loading time
51	:param auto_plot: if True the datamanager sends data to plotting
52	plugin.
53	:param auto_set_data: if True the datamanager sends to the current
54	perspective
55	"""
56	self.stored_data = {}
57	self.message = ""
58	self.data_name_dict = {}
59	self.count = 0
60	self.list_of_id = []
61	self.time_stamp = time.time()
62
63	def __str__(self):
64	_str = ""
65	_str += "No of states is %s \n" % str(len(self.stored_data))
66	n_count = 0
67	for value in list(self.stored_data.values()):
68	n_count += 1
69	_str += "State No %s \n" % str(n_count)
70	_str += str(value) + "\n"
71	return _str
72
73	def create_gui_data(self, data, path=None):
74	"""
75	Receive data from loader and create a data to use for guiframe
76	"""
77
78	if issubclass(Data2D, data.__class__):
79	new_plot = Data2D(image=None, err_image=None)
80	else:
81	new_plot = Data1D(x=[], y=[], dx=None, dy=None)
82
83	new_plot.copy_from_datainfo(data)
84	data.clone_without_data(clone=new_plot)
85	#creating a name for data
86	title = ""
87	file_name = os.path.basename(path) if path is not None else os.path.basename(data.filename)
88	if file_name:
89	name = file_name
90	elif data.run:
91	name = data.run[0]
92	else:
93	name = "data"
94	name = self.rename(name)
95	#find title
96	if data.title.strip():
97	title = data.title
98	if title.strip() == "":
99	title = file_name
100
101	stripped_filename = new_plot.filename.strip()
102	if not stripped_filename:
103	new_plot.filename = file_name
104	if stripped_filename != os.path.basename(stripped_filename):
105	new_plot.filename = file_name
106
107	new_plot.name = name
108	new_plot.title = title
109	## allow to highlight data when plotted
110	new_plot.interactive = True
111	## when 2 data have the same id override the 1 st plotted
112	self.time_stamp += 1
113	new_plot.id = str(name) + str(self.time_stamp)
114	##group_id specify on which panel to plot this data
115	new_plot.group_id = str(name) + str(self.time_stamp)
116	new_plot.is_data = True
117	new_plot.path = path
118	new_plot.list_group_id = []
119	# Assign the plot role to data
120	new_plot.plot_role = Data1D.ROLE_DATA
121	##post data to plot
122	# plot data
123	return new_plot
124
125	def rename(self, name):
126	"""
127	rename data
128	"""
129	# name of the data allow to differentiate data when plotted
130	try:
131	name = GuiUtils.parseName(name=name, expression="_")
132	except TypeError:
133	# bad name sent to rename
134	return None
135
136	max_char = name.find("[")
137	if max_char < 0:
138	max_char = len(name)
139	name = name[0:max_char]
140
141	if name not in self.data_name_dict:
142	self.data_name_dict[name] = 0
143	else:
144	self.data_name_dict[name] += 1
145	name = name + " [" + str(self.data_name_dict[name]) + "]"
146	return name
147
148
149	def add_data(self, data_list):
150	"""
151	receive a list of data items for storage
152	"""
153	for id, data in data_list.items():
154	if id in self.stored_data:
155	msg = "Data manager already stores %s" % str(data.name)
156	msg += ""
157	logging.info(msg)
158	data_state = self.stored_data[id]
159	data_state.data = data
160	else:
161	data_state = DataState(data)
162	data_state.id = id
163	data_state.path = data.path
164	self.stored_data[id] = data_state
165
166	def update_data(self, prev_data, new_data):
167	"""
168	"""
169	if prev_data.id not in list(self.stored_data.keys()):
170	return None, {}
171	data_state = self.stored_data[prev_data.id]
172	self.stored_data[new_data.id] = data_state.clone()
173	self.stored_data[new_data.id].data = new_data
174	if prev_data.id in list(self.stored_data.keys()):
175	del self.stored_data[prev_data.id]
176	return prev_data.id, {new_data.id: self.stored_data[new_data.id]}
177
178	def update_theory(self, theory, data_id=None, state=None):
179	"""
180	"""
181	uid = data_id
182	if data_id is None and theory is not None:
183	uid = theory.id
184	if uid in list(self.stored_data.keys()):
185	data_state = self.stored_data[uid]
186	else:
187	data_state = DataState()
188	data_state.uid = uid
189	data_state.set_theory(theory_data=theory, theory_state=state)
190	self.stored_data[uid] = data_state
191	return {uid: self.stored_data[uid]}
192
193
194	def get_message(self):
195	"""
196	return message
197	"""
198	return self.message
199
200	def get_by_id(self, id_list=None):
201	"""
202	"""
203	_selected_data = {}
204	_selected_theory_list = {}
205	if id_list is None:
206	return
207	for d_id in self.stored_data:
208	for search_id in id_list:
209	data_state = self.stored_data[d_id]
210	data = data_state.data
211	theory_list = data_state.get_theory()
212	if search_id == d_id:
213	_selected_data[search_id] = data
214	if search_id in list(theory_list.keys()):
215	_selected_theory_list[search_id] = theory_list[search_id]
216
217	return _selected_data, _selected_theory_list
218
219
220	def freeze(self, theory_id):
221	"""
222	"""
223	return self.freeze_theory(list(self.stored_data.keys()), theory_id)
224
225	def freeze_theory(self, data_id, theory_id):
226	"""
227	"""
228	selected_theory = {}
229	for d_id in data_id:
230	if d_id in self.stored_data:
231	data_state = self.stored_data[d_id]
232	theory_list = data_state.get_theory()
233	for t_id in theory_id:
234	if t_id in list(theory_list.keys()):
235	theory_data, theory_state = theory_list[t_id]
236	new_theory = copy.deepcopy(theory_data)
237	new_theory.id = time.time()
238	new_theory.is_data = True
239	new_theory.name += '_@' + \
240	str(new_theory.id)[7:-1].replace('.', '')
241	new_theory.title = new_theory.name
242	new_theory.label = new_theory.name
243	selected_theory[new_theory.id] = DataState(new_theory)
244	self.stored_data[new_theory.id] = \
245	selected_theory[new_theory.id]
246
247	return selected_theory
248
249
250	def delete_data(self, data_id, theory_id=None, delete_all=False):
251	"""
252	"""
253	for d_id in data_id:
254	if d_id in list(self.stored_data.keys()):
255	data_state = self.stored_data[d_id]
256	if data_state.data.name in self.data_name_dict:
257	del self.data_name_dict[data_state.data.name]
258	del self.stored_data[d_id]
259
260	self.delete_theory(data_id, theory_id)
261	if delete_all:
262	self.stored_data = {}
263	self.data_name_dict = {}
264
265	def delete_theory(self, data_id, theory_id):
266	"""
267	"""
268	for d_id in data_id:
269	if d_id in self.stored_data:
270	data_state = self.stored_data[d_id]
271	theory_list = data_state.get_theory()
272	if theory_id in list(theory_list.keys()):
273	del theory_list[theory_id]
274	#del pure theory
275	self.delete_by_id(theory_id)
276
277	def delete_by_id(self, id_list=None):
278	"""
279	save data and path
280	"""
281	for id in id_list:
282	if id in self.stored_data:
283	del self.stored_data[id]
284
285	def get_by_name(self, name_list=None):
286	"""
287	return a list of data given a list of data names
288	"""
289	_selected_data = {}
290	for selected_name in name_list:
291	for id, data_state in self.stored_data.items():
292	if data_state.data.name == selected_name:
293	_selected_data[id] = data_state.data
294	return _selected_data
295
296	def delete_by_name(self, name_list=None):
297	"""
298	save data and path
299	"""
300	for selected_name in name_list:
301	for id, data_state in self.stored_data.items():
302	if data_state.data.name == selected_name:
303	del self.stored_data[id]
304
305	def update_stored_data(self, name_list=None):
306	""" update stored data after deleting files in Data Explorer """
307	for selected_name in name_list:
308	# Take the copy of current, possibly shorter stored_data dict
309	stored_data = copy.deepcopy(self.stored_data)
310	for idx in list(stored_data.keys()):
311	if str(selected_name) in str(idx):
312	del self.stored_data[idx]
313
314	def get_data_state(self, data_id):
315	"""
316	Send list of selected data
317	"""
318	_selected_data_state = {}
319	for id in data_id:
320	if id in list(self.stored_data.keys()):
321	_selected_data_state[id] = self.stored_data[id]
322	return _selected_data_state
323
324	def get_all_data(self):
325	"""
326	return list of all available data
327	"""
328	return self.stored_data
329
330	def assign(self, other):
331	self.stored_data = other.stored_data
332	self.message = other.message
333	self.data_name_dict = other.data_name_dict
334	self.count = other.count
335	self.list_of_id = other.list_of_id
336	self.time_stamp = other.time_stamp
337
338	def save_to_writable(self, fp):
339	"""
340	save content of stored_data to fp (a .write()-supporting file-like object)
341	"""
342
343	def add_type(dict, type):
344	dict['__type__'] = type.__name__
345	return dict
346
347	def jdefault(o):
348	"""
349	objects that can't otherwise be serialized need to be converted
350	"""
351	# tuples and sets (TODO: default JSONEncoder converts tuples to lists, create custom Encoder that preserves tuples)
352	if isinstance(o, (tuple, set)):
353	content = { 'data': list(o) }
354	return add_type(content, type(o))
355
356	# "simple" types
357	if isinstance(o, (Sample, Source, Vector)):
358	return add_type(o.__dict__, type(o))
359	if isinstance(o, (Plottable, View)):
360	return add_type(o.__dict__, type(o))
361
362	# DataState
363	if isinstance(o, DataState):
364	# don't store parent
365	content = o.__dict__.copy()
366	content.pop('parent')
367	return add_type(content, type(o))
368
369	# ndarray
370	if isinstance(o, np.ndarray):
371	buffer = BytesIO()
372	np.save(buffer, o)
373	buffer.seek(0)
374	content = { 'data': buffer.read().decode('latin-1') }
375	return add_type(content, type(o))
376
377	# not supported
378	logging.info("data cannot be serialized to json: %s" % type(o))
379	return None
380
381	json.dump(self.stored_data, fp, indent=2, sort_keys=True, default=jdefault)
382
383
384	def load_from_readable(self, fp):
385	"""
386	load content from tp to stored_data (a .read()-supporting file-like object)
387	"""
388
389	supported = [
390	tuple, set,
391	Sample, Source, Vector,
392	Plottable, Data1D, Data2D, PlottableTheory1D, PlottableFit1D, Text, Chisq, View,
393	DataState, np.ndarray]
394
395	lookup = dict((cls.__name__, cls) for cls in supported)
396
397	class TooComplexException(Exception):
398	pass
399
400	def simple_type(cls, data, level):
401	class Empty(object):
402	def __init__(self):
403	for key, value in data.items():
404	setattr(self, key, generate(value, level))
405
406	# create target object
407	o = Empty()
408	o.__class__ = cls
409
410	return o
411
412	def construct(type, data, level):
413	try:
414	cls = lookup[type]
415	except KeyError:
416	logging.info('unknown type: %s' % type)
417	return None
418
419	# tuples and sets
420	if cls in (tuple, set):
421	# convert list to tuple/set
422	return cls(generate(data['data'], level))
423
424	# "simple" types
425	if cls in (Sample, Source, Vector):
426	return simple_type(cls, data, level)
427	if issubclass(cls, Plottable) or (cls == View):
428	return simple_type(cls, data, level)
429
430	# DataState
431	if cls == DataState:
432	o = simple_type(cls, data, level)
433	o.parent = None # TODO: set to ???
434	return o
435
436	# ndarray
437	if cls == np.ndarray:
438	buffer = BytesIO()
439	buffer.write(data['data'].encode('latin-1'))
440	buffer.seek(0)
441	return np.load(buffer)
442
443	logging.info('not implemented: %s, %s' % (type, cls))
444	return None
445
446	def generate(data, level):
447	if level > 16: # recursion limit (arbitrary number)
448	raise TooComplexException()
449	else:
450	level += 1
451
452	if isinstance(data, dict):
453	try:
454	type = data['__type__']
455	except KeyError:
456	# if dictionary doesn't have __type__ then it is assumed to be just an ordinary dictionary
457	o = {}
458	for key, value in data.items():
459	o[key] = generate(value, level)
460	return o
461
462	return construct(type, data, level)
463
464	if isinstance(data, list):
465	return [generate(item, level) for item in data]
466
467	return data
468
469	new_stored_data = {}
470	for id, data in json.load(fp).items():
471	try:
472	new_stored_data[id] = generate(data, 0)
473	except TooComplexException:
474	logging.info('unable to load %s' % id)
475
476	self.stored_data = new_stored_data
477

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source: sasview/src/sas/qtgui/MainWindow/DataManager.py

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