Source code for deephaven.appmode

#
# Copyright (c) 2016-2022 Deephaven Data Labs and Patent Pending
#

""" This module supports writing Deephaven application mode Python scripts. """
from typing import Dict

import jpy

from deephaven import DHError
from deephaven._wrapper import JObjectWrapper, pythonify, javaify

_JApplicationContext = jpy.get_type("io.deephaven.appmode.ApplicationContext")
_JApplicationState = jpy.get_type("io.deephaven.appmode.ApplicationState")


[docs]class ApplicationState(JObjectWrapper): """ The ApplicationState represents the state of an application. """ j_object_type = _JApplicationState @property def j_object(self) -> jpy.JType: return self.j_app_state def __init__(self, j_app_state): self.j_app_state = j_app_state def __repr__(self): return f"id: {self.j_app_state.id()}, name: {self.j_app_state.name()}" def __str__(self): return repr(self) def __getitem__(self, item): item = str(item) j_field = self.j_app_state.getField(item) if not j_field: raise KeyError(item) return pythonify(j_field.value()) def __setitem__(self, key, value): key = str(key) self.j_app_state.setField(key, javaify(value)) def __delitem__(self, key): key = str(key) value = self.j_app_state.removeField(key) if not value: raise KeyError(key) @property def fields(self) -> Dict[str, object]: fields = {} j_fields = self.j_app_state.listFields() for i in range(j_fields.size()): j_field = j_fields.get(i) fields[j_field.name()] = pythonify(j_field.value()) return fields
[docs]def get_app_state(): """ Get the current application state object. Raises: DHError """ try: return ApplicationState(j_app_state=_JApplicationContext.get()) except Exception as e: raise DHError(e, "failed to get the application state.") from e