Transform() public method

public Transform ( MethodCallExpression methodCallExpression ) : Expression
methodCallExpression System.Linq.Expressions.MethodCallExpression
return System.Linq.Expressions.Expression
IsNullOrEmptyMethodCallTransformer Class Documentation
Beispiel #1
0
    public void Transform ()
    {
      var method = typeof (string).GetMethod ("IsNullOrEmpty", new[] { typeof(string) });
      var objectExpression = Expression.Constant ("Test");
      var expression = Expression.Call (method, objectExpression);
      var transformer = new IsNullOrEmptyMethodCallTransformer ();

      var result = transformer.Transform (expression);

      var expectedIsNullExpression = new SqlIsNullExpression (objectExpression);
      var expectedLenExpression = new SqlLengthExpression (objectExpression);
      var expectedResult = Expression.OrElse (expectedIsNullExpression, Expression.Equal (expectedLenExpression, new SqlLiteralExpression(0)));
      
      SqlExpressionTreeComparer.CheckAreEqualTrees (expectedResult, result);
    }