persistence/DD.Persistence.Database/Specifications/Operation/AndSpec.cs

using Ardalis.Specification;

namespace DD.Persistence.Database.Specifications.Operation;
public class AndSpec<TEntity> : Specification<TEntity>
{
    public AndSpec(ISpecification<TEntity> first, ISpecification<TEntity> second)
    {
        if (first is null || second is null)
            return;

        ApplyCriteria(first);
        ApplyCriteria(second);
    }

    private void ApplyCriteria(ISpecification<TEntity> specification)
    {
        foreach (var criteria in specification.WhereExpressions)
        {
            Query.Where(criteria.Filter);
        }
    }
}