Method ImportTextFromFileAsync

Namespace

LMKit.Retrieval

Assembly

LM-Kit.NET.dll

ImportTextFromFileAsync(string, Encoding, TextChunking, string, string, CancellationToken)

Asynchronously imports text from a file into a DataSource, creating a new section.

public Task<DataSource> ImportTextFromFileAsync(string path, Encoding encoding, TextChunking textChunking, string dataSourceIdentifier, string sectionIdentifier, CancellationToken cancellationToken = default)

Parameters

path string

The file path of the text to import.

encoding Encoding

The character encoding used in the file.

textChunking TextChunking

Specifies how to split the text into chunks.

dataSourceIdentifier string

The unique identifier for the target DataSource. If a matching data source exists, the text is added as a new section; otherwise, a new data source is created.

sectionIdentifier string

The identifier for the new section.

cancellationToken CancellationToken

Optional cancellation token.

Returns

Task<DataSource>

A task that resolves to the DataSource containing the imported text.

Examples

// Example: Asynchronously import text from a file.
string filePath = "sample.txt";
LM embeddingModel = LM.LoadFromModelID("nomic-embed-text");
RagEngine ragEngine = new RagEngine(embeddingModel);
DataSource dataSource = await ragEngine.ImportTextFromFileAsync(
    path: filePath,
    encoding: Encoding.UTF8,
    textChunking: new TextChunking() { MaxChunkSize = 500 },
    dataSourceIdentifier: "myDataSource",
    sectionIdentifier: "intro"
);
Console.WriteLine($"Imported text into DataSource: {dataSource.Identifier}");

Exceptions

ArgumentNullException

Thrown if path or dataSourceIdentifier is null or empty.

OperationCanceledException

Thrown if the operation is canceled.

ImportTextFromFileAsync(string, Encoding, TextChunking, string, string, MetadataCollection, CancellationToken)

Asynchronously imports text from a file into a DataSource, creating a new section and attaching additional metadata information.

public Task<DataSource> ImportTextFromFileAsync(string path, Encoding encoding, TextChunking textChunking, string dataSourceIdentifier, string sectionIdentifier, MetadataCollection additionalMetadata, CancellationToken cancellationToken = default)

Parameters

path string

The file path of the text to import.

encoding Encoding

The character encoding used in the file.

textChunking TextChunking

Specifies how to split the text into chunks.

dataSourceIdentifier string

The unique identifier for the target DataSource. If a matching data source exists, the text is added as a new section; otherwise, a new data source is created.

sectionIdentifier string

The identifier for the new section.

additionalMetadata MetadataCollection

Metadata to associate with the imported section.

cancellationToken CancellationToken

Optional cancellation token.

Returns

Task<DataSource>

A task that resolves to the DataSource containing the imported text.