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McRule
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Generic property selector, could be useful elsewhere.

sean-m-patch-1
Sean McArde 2023-11-02 12:52:50 -07:00
parent 8c548fcd38
commit 4c4d609f5d
1 changed files with 12 additions and 4 deletions
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16
McRule/PredicateExpressionPolicyExtensions.cs
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@ -213,11 +213,19 @@ public static partial class PredicateExpressionPolicyExtensions
break;
}
}
// No literals found.
return (false, null);
}
public static Expression<Func<T, dynamic>> SelectPropertyOrField<T>(string propertyName) {
var parameter = Expression.Parameter(typeof(T), "x");
Expression opLeft = parameter;
foreach (var p in propertyName.Split(".")) opLeft = Expression.PropertyOrField(opLeft, p);
return Expression.Lambda<Func<T, dynamic>>(opLeft, parameter);
}
public static ExpressionGenerator GetCoreExpressionGenerator() => new PolicyToExpressionGenerator();
public static ExpressionGenerator GetEfExpressionGenerator() => new PolicyToEFExpressionGenerator();
@ -225,9 +233,9 @@ public static partial class PredicateExpressionPolicyExtensions
public class PolicyToExpressionGenerator : ExpressionGeneratorBase
{
/// <summary>
/// Builds expressions using string member functions StartsWith, EndsWith or Contains as the comparator.
/// </summary>
/// <summary>
/// Builds expressions using string member functions StartsWith, EndsWith or Contains as the comparator.
/// </summary>
public override Expression<Func<T, bool>> AddStringPropertyExpression<T>(
Expression<Func<T, string>> lambda, string filter, string filterType, bool ignoreCase = false)
{