public DataParameterBuilder(Type queryType)
{
_queryType = Verify.ArgumentNotNull(queryType, "queryType");
PropertyInfo[] properties = queryType.GetProperties();
Dictionary<string, DataParameterInfo> namedParameters = null;
Dictionary<int, DataParameterInfo> orderedParameters = null;
foreach (PropertyInfo property in properties)
{
ParameterAttribute attribute = GetParameterAttribute(property);
if (attribute.Ignore)
{
continue;
}
if (DataParameterTypeMapping.ForType(property.PropertyType) == null)
{
_errors.Add("Cannot handle property types of " + property.PropertyType.Name);
}
if (attribute.ParameterOrder > 0)
{
if (orderedParameters == null)
{
orderedParameters = new Dictionary<int, DataParameterInfo>();
}
if (orderedParameters.ContainsKey(attribute.ParameterOrder))
{
string message = string.Format("Properties {0} and {1} both have a parameter order of {2}",
orderedParameters[attribute.ParameterOrder].Property.Name,
property.Name,
attribute.ParameterOrder);
_errors.Add(message);
}
orderedParameters[attribute.ParameterOrder] = new DataParameterInfo(attribute, property);
}
else
{
if (namedParameters == null)
{
namedParameters = new Dictionary<string, DataParameterInfo>();
}
string parameterName = SanitizeParameterName(attribute.ParameterName);
if (namedParameters.ContainsKey(parameterName))
{
_errors.Add("Parameter name is defined more than once: " + parameterName);
}
namedParameters[parameterName] = new DataParameterInfo(attribute, property);
}
}
if (namedParameters != null && orderedParameters != null)
{
_errors.Add("Cannot have a mix of named properties and ordered properties");
}
if (namedParameters != null)
{
_namedParameters = namedParameters;
}
else if (orderedParameters != null)
{
var array = new DataParameterInfo[orderedParameters.Count];
for (int index = 0; index < array.Length; ++index)
{
int propertyOrder = index + 1;
DataParameterInfo property;
if (orderedParameters.TryGetValue(propertyOrder, out property))
{
array[index] = property;
}
else
{
_errors.Add("Missing property with order of " + propertyOrder);
}
}
_orderedParameters = array;
}
}
private static string GetParameterNamePrefix(IDbCommand cmd, DataParameterInfo parameterInfo)
{
string typeName = cmd.GetType().FullName;
if (typeName.StartsWith("System.Data.SqlClient") ||
typeName.StartsWith("System.Data.SqlServerCe"))
{
return "@";
}
if (typeName.StartsWith("MySql"))
{
return "?";
}
if (!Char.IsLetterOrDigit(parameterInfo.Attribute.ParameterName[0]))
{
return parameterInfo.Attribute.ParameterName[0].ToString();
}
// TODO: probably need to look into postgres, firebird, etc
return ":";
}
