38 lines
940 B
C#
38 lines
940 B
C#
// Copyright (c) The Geekeey Authors
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// SPDX-License-Identifier: EUPL-1.2
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using System.Linq.Expressions;
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namespace Geekeey.Request.Persistence;
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/// <summary>
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/// Stores information about a where expression.
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/// </summary>
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/// <typeparam name="T">The entity type.</typeparam>
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public sealed class WhereExpressionInfo<T>
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{
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private readonly Lazy<Func<T, bool>> _filterFunc;
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/// <summary>
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/// Creates a new where expression info.
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/// </summary>
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/// <param name="filter">The filter expression.</param>
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public WhereExpressionInfo(Expression<Func<T, bool>> filter)
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{
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ArgumentNullException.ThrowIfNull(filter);
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Filter = filter;
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_filterFunc = new Lazy<Func<T, bool>>(Filter.Compile);
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}
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/// <summary>
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/// Gets the filter expression.
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/// </summary>
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public Expression<Func<T, bool>> Filter { get; }
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/// <summary>
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/// Gets the compiled filter function.
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/// </summary>
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public Func<T, bool> FilterFunc => _filterFunc.Value;
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}
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