/// <summary>
/// Creates the member binding.
/// </summary>
/// <param name="propertyExpression">The property expression.</param>
/// <param name="propertyTarget">The property target.</param>
/// <param name="checkIfNull">if set to <c>true</c> [check if null].</param>
protected void CreateMemberBinding(Expression propertyExpression, MemberInfo propertyTarget, bool checkIfNull)
{
// Visit the expression for its transformation.
Expression result = visitorMapper.Visit(propertyExpression, checkIfNull);
MemberAssignment bind = Expression.Bind(propertyTarget, result);
memberForNew.Add(bind);
}
public void Visit_ExpressionSubClassCheckIfNull_DefaultValueConstant_ReturnExpression()
{
MapperExpressionVisitor expected = new MapperExpressionVisitor(Expression.Parameter(typeof(ClassSource), "s"));
Expression<Func<ClassSource, object>> exp = x => x.SubClass.PropInt1;
Expression actual = null;
actual = expected.Visit(exp, true);
Assert.IsTrue(actual.NodeType == ExpressionType.MemberAccess);
}
public void Visit_ExpressionMemberSimple_ReturnExpression()
{
MapperExpressionVisitor expected = new MapperExpressionVisitor(Expression.Parameter(typeof(ClassSource), "s"));
Expression<Func<ClassSource, object>> exp = x => x.PropString1;
Expression actual = null;
actual = expected.Visit(exp.Body, true);
Assert.IsNotNull(actual);
}
public void Visit_ExpressionIsNull_ReturnNull()
{
MapperExpressionVisitor expected = new MapperExpressionVisitor(Expression.Parameter(typeof(ClassSource), "s"));
Expression exp = null;
Expression actual = null;
actual = expected.Visit(exp);
Assert.IsNull(actual);
}
public void Visit_ParameterExpression_CheckIfNull_IsTrue_Expression()
{
MapperExpressionVisitor expected = new MapperExpressionVisitor(Expression.Parameter(typeof(ClassSource), "s"));
ParameterExpression exp = Expression.Parameter(typeof(ClassSource2), "x");
Expression actual = null;
actual = expected.Visit(exp,true) as ParameterExpression;
Assert.IsTrue(actual.NodeType == ExpressionType.Parameter);
Assert.AreNotEqual(actual.Type, exp.Type);
}
internal LambdaExpression GetSortedExpression(string propertySource)
{
Contract.Requires(!string.IsNullOrEmpty(propertySource));
Expression result = null;
var exp = PropertiesMapping.Find(x => GetPropertyInfo(x.Item2).Name == propertySource);
if (exp == null)
{
throw new PropertyNoExistException(propertySource, TargetType);
}
// To change the parameter.
var visitor = new MapperExpressionVisitor(paramClassSource);
result = visitor.Visit(exp.Item1);
return(Expression.Lambda(result, paramClassSource));
}