public static IQuerySelection Field <T>(Expression <Func <T, object> > prop, String alias)
{
var entityType = typeof(T);
var fieldName = ReflectionUtils.GetPropertyNameFromExpression(prop);
return(Expression(SelectExpr.Build().Field(entityType, fieldName, alias)));
}
public static IQuerySelection Query(ISelectionQuery query, String alias)
{
var expressionSelection =
(AbstractExpressionSelection)_factory.CreateSelection(QuerySelectionExpressionType.Expression);
expressionSelection.Expr = SelectExpr.Build().Query(query, alias);
return(expressionSelection);
}
public static IQuerySelection Sum <T>(Expression <Func <T, object> > prop, String alias)
{
return(Expression(SelectExpr.Build().Field(prop, alias).Sum()));
}
public static IQuerySelection Sum(Type entityType, String field, String alias)
{
return(Expression(SelectExpr.Build().Field(entityType, field, alias).Sum()));
}
public static IQuerySelection Field(String field, String alias)
{
return(Expression(SelectExpr.Build().Field(field, alias)));
}
public static IQuerySelection CustFunction <T>(String sqlFunction, Expression <Func <T, object> > prop, String alias)
{
return(Expression(SelectExpr.Build().Field(prop, alias).CustFunc(sqlFunction)));
}
public static IQuerySelection CustFunction(String sqlFunction, Type entityType, String field, String alias)
{
return(Expression(SelectExpr.Build().Field(entityType, field, alias).CustFunc(sqlFunction)));
}
