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Version: Python

Use Application Mode libraries

This guide shows you how to use the main library for Application Mode scripts, ApplicationState. This library gives you more control over Deephaven's state during launch.

ApplicationState is used to interact with the Deephaven server within Application Mode. Values set on an instance of this class interact with fields on the Deephaven server.

Example​

The following example uses ApplicationState to create tables within Deephaven through Application Mode.

from deephaven.appmode import ApplicationState, get_app_state
from deephaven import time_table, empty_table

from typing import Callable


def start(app: ApplicationState):
    size = 42
    app["hello"] = empty_table(size)
    app["world"] = time_table("PT1S")


def initialize(func: Callable[[ApplicationState], None]):
    app = get_app_state()
    func(app)


initialize(start)