/// <summary>
/// Default Ctor.
/// <para>If DB has null string value, INSTANCE property (can be private or internal BUT not PUBLIC and not STATIC)
/// will contain string.empty value.</para>
/// </summary>
/// <param name="dbcolumnName">Name of DBColumn in the select query.</param>
/// <param name="stringConversionType">This value has NO impact on NON-String type values.</param>
/// <param name="additionalDataDbColumnName">Name of the db column in AdditionalDataQuery
/// (When Cache config has AdType = AdditionalData.Database).</param>
public AsyncCacheAttribute(string dbcolumnName, CacheStringConversion stringConversionType,
string additionalDataDbColumnName = null)
{
ConversionType = stringConversionType;
DbColumnName = dbcolumnName;
AdditionalDataDbColumnName = additionalDataDbColumnName;
}
public Action <TMap, DbDataReader, int> StringSetter(Type dbcolType, CacheStringConversion conversionType,
Delegate setter, string columnName)
{
Func <Delegate, string, Action <TMap, DbDataReader, int> > outFunc;
return(_stringerBinders.TryGetValue(dbcolType, out outFunc)
? outFunc(setter, columnName)
: StringSetter(conversionType, setter, columnName));
}
private Action <TMap, DbDataReader, int> PrepareSetter(Type columnType, Type propertyType,
CacheStringConversion conversionType, Delegate setter, string columnName, string propName)
{
if (columnType == null)
{
return(propertyType == typeof(string)
? _propertySetterBuilder.StringSetter(conversionType, setter, columnName)
: _propertySetterBuilder.Setter(propertyType, setter, columnName));
}
return(propertyType == typeof(string)
? _propertySetterBuilder.StringSetter(columnType, conversionType, setter, columnName)
: _propertySetterBuilder.Setter(columnType, propertyType, setter, columnName, propName));
}
public Action <TMap, DbDataReader, int> StringSetter(CacheStringConversion conversionType, Delegate setter, string columnName)
{
return(StaticCalls.GetStringBinder <TMap>(setter, conversionType, columnName));
}
public static Action <TMap, DbDataReader, int> GetStringBinder <TMap>(Delegate propDelegate,
CacheStringConversion conversionType, string columnName)
{
var castedPropertySetter = propDelegate as PropertySetter <TMap, string>;
if (castedPropertySetter == null)
{
throw new InvalidCastException(
$"Unable to cast the String Property setter (DbColumn:{columnName}) as " +
$"{typeof(PropertySetter<TMap, string>).Name}. Given delegate type is: {propDelegate.GetType()}");
}
switch (conversionType)
{
case CacheStringConversion.None:
Expression <Action <TMap, DbDataReader, int> > expr1 =
(obj, odr, index) =>
castedPropertySetter(obj, odr.IsDBNull(index) ? string.Empty : odr[index].ToString());
return(expr1.Compile());
case CacheStringConversion.OnlyTrim:
Expression <Action <TMap, DbDataReader, int> > expr2 =
(obj, odr, index) =>
castedPropertySetter(obj, odr.IsDBNull(index) ? string.Empty : odr[index].ToString().Trim());
return(expr2.Compile());
case CacheStringConversion.ToLower:
Expression <Action <TMap, DbDataReader, int> > expr3 =
(obj, odr, index) =>
castedPropertySetter(obj,
odr.IsDBNull(index) ? string.Empty : odr[index].ToString().ToLower());
return(expr3.Compile());
case CacheStringConversion.ToLowerWithTrim:
Expression <Action <TMap, DbDataReader, int> > expr4 =
(obj, odr, index) =>
castedPropertySetter(obj,
odr.IsDBNull(index) ? string.Empty : odr[index].ToString().SafeTrimLower());
return(expr4.Compile());
case CacheStringConversion.ToUpper:
Expression <Action <TMap, DbDataReader, int> > expr5 =
(obj, odr, index) =>
castedPropertySetter(obj,
odr.IsDBNull(index) ? string.Empty : odr[index].ToString().ToUpper());
return(expr5.Compile());
case CacheStringConversion.ToUpperWithTrim:
Expression <Action <TMap, DbDataReader, int> > expr6 =
(obj, odr, index) =>
castedPropertySetter(obj,
odr.IsDBNull(index) ? string.Empty : odr[index].ToString().ToUpper().Trim());
return(expr6.Compile());
case CacheStringConversion.RemovedInterwordSpace:
Expression <Action <TMap, DbDataReader, int> > expr7 =
(obj, odr, index) =>
castedPropertySetter(obj,
odr.IsDBNull(index) ? string.Empty : odr[index].ToString().Replace(" ", ""));
return(expr7.Compile());
case CacheStringConversion.RemovedInterwordSpaceAndToLower:
Expression <Action <TMap, DbDataReader, int> > expr8 =
(obj, odr, index) =>
castedPropertySetter(obj,
odr.IsDBNull(index) ? string.Empty : odr[index].ToString().Replace(" ", "").ToLower());
return(expr8.Compile());
case CacheStringConversion.RemovedInterwordSpaceAndToUpper:
Expression <Action <TMap, DbDataReader, int> > expr9 =
(obj, odr, index) =>
castedPropertySetter(obj,
odr.IsDBNull(index) ? string.Empty : odr[index].ToString().Replace(" ", "").ToUpper());
return(expr9.Compile());
default:
throw new NotImplementedException($"{conversionType} not implemented.");
}
}
