public static IQueryable ApplySelect(IQueryable source, Type elementType, SelectClause selectClause)
{
var propSigs = selectClause.Properties;
var dti = DynamicTypeInfo.FindOrCreate(propSigs.Select(ps => ps.Name), propSigs.Select(ps => ps.ReturnType));
var lambdaExpr = CreateNewLambda(dti, propSigs);
var method = TypeFns.GetMethodByExample((IQueryable <String> q) => q.Select(s => s.Length), elementType, dti.DynamicType);
var func = BuildIQueryableFunc(elementType, method, lambdaExpr);
return(func(source));
}
public void Create1()
{
var propNames = new string[] { "LastName", "FirstName", "Age" };
var propTypes = new Type[] { typeof(String), typeof(String), typeof(Int32) };
var t1 = DynamicTypeInfo.FindOrCreate(propNames, propTypes);
var t2 = DynamicTypeInfo.FindOrCreate(propNames, propTypes);
Assert.IsTrue(t1 == t2);
}