OracleVectorToFloatArrayPropertyHandler

A property handler that maps the Oracle VECTOR type into a float array property.

A property handler that maps the Oracle VECTOR type into a float array property.

Overview

Conversions

Exceptions

Usability

Bind the handler to the property that maps to a VECTOR column.

Attribute

public class Embedding
{
    public int Id { get; set; }

    [Map("vector"), PropertyHandler(typeof(OracleVectorToFloatArrayPropertyHandler))]
    public float[] Vector { get; set; }
}

Once bound, the library invokes the handler automatically when the property is read or written.

using (var connection = new OracleConnection(connectionString))
{
    connection.Insert(new Embedding { Id = 1, Vector = new float[] { 1.5f, 2.5f, 3.5f } });
    var embedding = connection.Query<Embedding>(e => e.Id == 1).First();
}

Fluent Mapping

To configure via FluentMapper:

FluentMapper
    .Entity<Embedding>()
    .PropertyHandler<OracleVectorToFloatArrayPropertyHandler>(e => e.Vector);

Property Level Mapping

To configure via PropertyHandlerMapper:

PropertyHandlerMapper.Add<Embedding, OracleVectorToFloatArrayPropertyHandler>(e => e.Vector, new OracleVectorToFloatArrayPropertyHandler(), true);

Type Level Mapping

To apply the handler to every property of the type float[]:

PropertyHandlerMapper.Add<float[], OracleVectorToFloatArrayPropertyHandler>(new OracleVectorToFloatArrayPropertyHandler(), true);

A type level mapping is process-wide: it is applied to every float[] property of every entity and connection, not only to the intended column. Prefer the attribute, fluent or property level mapping unless every float[] property maps to a VECTOR column.

See Also

• OracleVectorToDoubleArrayPropertyHandler