def load(self, dirname):
""" Loads the project from the given directory. The existing state
of the project is completely modified.
"""
# TODO: We should formalize this dependency at some point and move
# this import to the top level
from configobj import ConfigObj
if dirname == "":
raise IOError("Cannot load project from empty path.")
elif not os.path.isdir(dirname):
raise IOError("Cannot find directory: " + dirname)
filename = abspath(join(dirname, self.PROJECT_FILE_NAME))
if not os.path.isfile(filename):
raise IOError('Cannot load %s from project directory "%s".' % \
(self.PROJECT_FILE_NAME, dirname))
# Every project is saved as a text ConfigObj file that describes
# the name and location of the real data files.
configspec = ConfigObj(self.CONFIG_SPEC, list_values=False)
config = ConfigObj(filename, configspec=configspec)
contexts = []
for context_config in config["Contexts"].values():
ctx = DataContext.load(join(dirname, context_config["file"]))
ctx.name = context_config["name"]
contexts.append(ctx)
self.contexts = contexts
experiments = []
if hasattr(scripting, "app"):
app = scripting.app
else:
app = None
for exp_config in config["Experiments"].values():
experiment = Experiment()
exp_dir = join(dirname, exp_config["save_dir"])
experiment.load_from_config(exp_config, exp_dir, project=self)
experiments.append(experiment)
self.experiments = experiments
proj_config = config["Project"]
if proj_config.has_key("active_experiment"):
self.active_experiment = self.find_experiment(proj_config["active_experiment"])
# Update Project Save Path
self.project_save_path = dirname
return
def load_from_config(self, config, dirname, project=None):
""" Loads the experiment. The existing state of the experiment is
completely modified.
Parameters
----------
config: a dict-like object
The keys should correspond to the configspec for experiments as
defined in project_config_spec.
dirname: a string
the absolute path to the subdirectory of the project that
holds the experiment's saved data
project: Project instance
If provided, the project is used to hook up references to
the shared context.
"""
join = os.path.join
self.name = config.get("name", "")
if "code_file" in config:
# Clear out the old references
self.canvas = self.controller = self.exec_model = None
self.exec_model = ExecutionModel.from_file(
join(dirname, config["code_file"]))
self.controller = BlockGraphController(
execution_model=self.exec_model)
self.canvas = BlockCanvas(graph_controller=self.controller)
self.controller.canvas = self.canvas
if "layout_file" in config:
self.canvas.load_layout(join(dirname, config["layout_file"]))
if "local_context" in config:
self._local_context = DataContext.load(
join(dirname, config["local_context"]))
shared_context = None
if project is not None:
name = config.get("shared_context")
if name != "":
shared_context = project.find_context(name)
self._shared_context = shared_context
self._update_exec_context()
def load_from_config(self, config, dirname, project=None):
""" Loads the experiment. The existing state of the experiment is
completely modified.
Parameters
----------
config: a dict-like object
The keys should correspond to the configspec for experiments as
defined in project_config_spec.
dirname: a string
the absolute path to the subdirectory of the project that
holds the experiment's saved data
project: Project instance
If provided, the project is used to hook up references to
the shared context.
"""
join = os.path.join
self.name = config.get("name", "")
if "code_file" in config:
# Clear out the old references
self.canvas = self.controller = self.exec_model = None
self.exec_model = ExecutionModel.from_file(join(dirname, config["code_file"]))
self.controller = BlockGraphController(execution_model = self.exec_model)
self.canvas = BlockCanvas(graph_controller=self.controller)
self.controller.canvas = self.canvas
if "layout_file" in config:
self.canvas.load_layout(join(dirname, config["layout_file"]))
if "local_context" in config:
self._local_context = DataContext.load(join(dirname, config["local_context"]))
shared_context = None
if project is not None:
name = config.get("shared_context")
if name != "":
shared_context = project.find_context(name)
self._shared_context = shared_context
self._update_exec_context()
