// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
 
namespace Microsoft.Extensions.VectorData;
 
/// <summary>
/// Defines a base class for filter clauses.
/// </summary>
/// <remarks>
/// A <see cref="FilterClause"/> is used to request that the underlying search service should
/// filter search results based on the specified criteria.
/// </remarks>
[Obsolete("Use LINQ expressions via VectorSearchOptions<TRecord>.Filter instead. This type will be removed in a future version.")]
public abstract class FilterClause
{
    /// <summary>
    /// Initializes a new instance of the <see cref="FilterClause"/> class.
    /// </summary>
    protected FilterClause()
    {
    }
}