Crate perspective_client 

perspective_client is the client implementation of Perspective, designed to be used from Rust directly, and as a core to perspective-js and perspective-python crates which wrap language-specific bindings for this module.

See also

• perspective-rs for the Rust Client and Server APIs.
• perspective-js for the JavaScript API.
• perspective-python for the Python API.
• perspective-server for Data Binding details.
• perspective-viewer for the WebAssembly <perspective-viewer> Custom Element API.

Re-exports

pub use crate::proto::JoinType;

Modules

config

Options for Table::view, and details about fields like expressions.

proto

utils

Utility functions that are common to the perspective crates.

virtual_server

Virtual server implementation for Perspective.

Structs

Client

An instance of a Client is a connection to a single perspective_server::Server, whether locally in-memory or remote over some transport like a WebSocket.

ColumnWindow

DeleteOptions

Options for Table::delete.

ExprValidationResult

Result of a call to Table::validate_expressions, containing a schema for valid expressions and error messages for invalid ones.

Features

Metadata about what features are supported by the Server to which this Client connects.

JoinOptions

Options for Client::join.

OnUpdateData

Rows updated and port ID corresponding to an update batch, provided to the callback argument to View::on_update with the “rows” mode.

OnUpdateOptions

Options for View::on_update.

ProxySession

A Session implementation which tunnels through another Client. @private

ReconnectCallback

The type of the reconnect parameter passed to [Client::handle_error}, and to the callback closure of Client::on_error.

SystemInfo

Metadata about the engine runtime (such as total heap utilization).

Table

Table is Perspective’s columnar data frame, analogous to a Pandas/Polars DataFrame or Apache Arrow, supporting append & in-place updates, removal by index, and update notifications.

TableInitOptions

Options which impact the behavior of Client::table, as well as subsequent calls to Table::update.

UpdateOptions

Options for Table::update.

View

The View struct is Perspective’s query and serialization interface. It represents a query on the Table’s dataset and is always created from an existing Table instance via the Table::view method.

ViewWindow

Options for serializing a window of data from a View.

Enums

OnUpdateMode

The update mode for View::on_update.

TableData

The possible formats of input data which Client::table may take as an argument.

TableReadFormat

The format to interpret data preovided to Client::table.

TableRef

A reference to a table, either by handle or by name.

UpdateData

The possible formats of input data which Table::update may take as an argument.

Traits

ClientHandler

The client-side representation of a connection to a Server.

Session

The server-side representation of a connection to a Client.

Type Aliases

ClientError

ExprValidationError