Struct DataTypeTreeBuilder

pub struct DataTypeTreeBuilder<T> { /* private fields */ }

Utility for constructing a DataTypeTree instance by browsing the server type hierarchy.

Example

// Set a filter restrict which nodes to include in the
// data type tree.
use std::sync::Arc;
use opcua::types::custom::DynamicTypeLoader;
use opcua::client::custom_types::DataTypeTreeBuilder;
// Note that this must include any data type that your custom types depend on,
// including built-in types.
let type_tree = DataTypeTreeBuilder::new(|node_id| node_id.namespace <= 2)
    .build(&session)
    .await?;
session.add_type_loader(Arc::new(DynamicTypeLoader::new(Arc::new(type_tree))));

// You will also need to load the namespace map.

Implementations

impl<T: FnMut(&NodeId) -> bool> DataTypeTreeBuilder<T>

pub fn new(filter: T) -> Self

Create a new data type tree builder with the given filter method.

pub fn token(self, token: CancellationToken) -> Self

Set a new cancellation token for the internal browser.

pub fn config(self, config: BrowserConfig) -> Self

Set the configuration for the internal browser.

pub fn values_per_read(self, values_per_read: usize) -> Self

Set the maximum number of values per Read request.

pub async fn build(self, session: &Session) -> Result<DataTypeTree, Error>

Read from the server and build a data type tree from the results.