Beispiel #1
0
        public Specification <T> AndAlso(Expression <Func <T, bool> > andWhere)
        {
            if (Where == null)
            {
                Where = andWhere;
                return(this);
            }

            var p       = Where.Parameters[0];
            var visitor = new SubstExpressionVisitor
            {
                Subst = { [andWhere.Parameters[0]] = p }
            };

            Expression body = Expression.AndAlso(Where.Body, visitor.Visit(andWhere.Body) ?? throw new InvalidOperationException());

            Where = Expression.Lambda <Func <T, bool> >(body, p);

            return(this);
        }
Beispiel #2
0
        public Specification <T> OrElse(Expression <Func <T, bool> > orWhere)
        {
            //TODO Refactor
            if (Where == null)
            {
                Where = orWhere;
                return(this);
            }

            var p       = Where.Parameters[0];
            var visitor = new SubstExpressionVisitor
            {
                Subst = { [orWhere.Parameters[0]] = p }
            };

            Expression body = Expression.OrElse(Where.Body, visitor.Visit(orWhere.Body) ?? throw new InvalidOperationException());

            Where = Expression.Lambda <Func <T, bool> >(body, p);

            return(this);
        }