public void Get_Dictionary_Attributes()
{
InitCache();
var attr = cache.GetDictionaryAttribute(typeof(T).Name);
Assert.IsNotNull(attr);
}
/// <summary>
/// Generate lambda method
/// </summary>
/// <param name="filter">Object filter</param>
/// <typeparam name="TValue">Type Entity</typeparam>
/// <typeparam name="F">Type Filter</typeparam>
/// <returns>Predicate generated</returns>
public static Expression <Func <TValue, bool> > GenerateLambda <TValue, TFilter>(
this TFilter filter,
ICacheRepository cacheRepository)
where TValue : class
where TFilter : class, IFilter
{
var param = Expression.Parameter(typeof(TValue));
var typeNameTFilter = typeof(TFilter).Name;
var typeNameTValue = typeof(TValue).Name;
var mergeOption = LambdaMerge.And;
Expression <Func <TValue, bool> > predicate = null;
LambdaMethod methodOption;
cacheRepository.
GetDictionaryMethodGet(typeNameTFilter).
ToList().
ForEach(propertyTFilter =>
{
Expression lambda = null;
string namePropertyOnE = null;
var namePropertyOnTFilter = propertyTFilter.Key;
var propertyValueTFilter = propertyTFilter.Value(filter);
if (ValidateProperty(propertyValueTFilter))
{
var customAttributes = cacheRepository.GetDictionaryAttribute(typeNameTFilter);
if (customAttributes.TryGetValue(namePropertyOnTFilter, out Dictionary <string, CustomAttributeTypedArgument> attributes))
{
if (attributes.TryGetValue("NameProperty", out CustomAttributeTypedArgument attribute))
{
namePropertyOnE = attribute.Value.ToString();
}
if (attributes.TryGetValue("MethodOption", out attribute))
{
var property = cacheRepository.GetProperty(typeNameTValue, namePropertyOnE ?? propertyTFilter.Key.ToString());
methodOption = (LambdaMethod)attribute.Value;
lambda = methodOption.SetExpressionType(param, property, propertyValueTFilter);
}
if (!lambda.IsNull(nameof(GenerateLambda), nameof(lambda)))
{
predicate = predicate == null ?
lambda.MergeExpressions <TValue>(param) :
predicate.MergeExpressions(mergeOption, param, lambda.MergeExpressions <TValue>(param));
if (attributes.TryGetValue("MergeOption", out attribute))
{
mergeOption = (LambdaMerge)attribute.Value;
}
else
{
mergeOption = LambdaMerge.And;
}
}
}
}
});
return(predicate);
}
/// <summary>Generates the predicate.</summary>
/// <typeparam name="TValue">The type of the value.</typeparam>
/// <typeparam name="TFilter">The type of the filter.</typeparam>
/// <param name="filter">The filter.</param>
/// <param name="cacheRepository">The cache repository.</param>
/// <returns></returns>
public static async Task <Expression <Func <TValue, bool> > > CreateGenericFilter <TValue, TFilter>(
this TFilter filter,
ICacheRepository cacheRepository,
CancellationToken token)
where TValue : class
where TFilter : class, IFilter
{
var predicate = (Expression <Func <TValue, bool> >)null;
var parameter = Expression.Parameter(typeof(TValue));
var filterName = typeof(TFilter).Name;
var mergeOption = LambdaMerge.And;
var dictionaryMethodGet = await cacheRepository.GetDictionaryMethodGet(filterName, token).ConfigureAwait(false);
foreach (var getFilter in dictionaryMethodGet)
{
var key = getFilter.Key;
var value = getFilter.Value(filter);
if (!IsValidValue(value))
{
continue;
}
var attributeCached = await cacheRepository.
GetDictionaryAttribute(filterName, token).
ConfigureAwait(false);
if (!attributeCached.TryGetValue(key, out var attributes))
{
continue;
}
attributes.TryGetValue(MethodOption, out var attributeMethod);
ThrowErrorIf.IsNullValue(attributeMethod, nameof(attributeMethod), nameof(CreateGenericFilter));
var methodOption = (LambdaMethod)attributeMethod.Value;
attributes.TryGetValue(NameProperty, out var attributeName);
var property = await cacheRepository.
GetProperty(typeof(TValue).Name, (string)attributeName.Value ?? key, token).
ConfigureAwait(false);
var expression = methodOption.CreateExpressionPerType(parameter, property, value);
ThrowErrorIf.IsNullValue(expression, nameof(expression), nameof(CreateGenericFilter));
predicate = ExpressionMergeFacade.CreateExpression(predicate, expression, parameter, mergeOption);
attributes.TryGetValue(MergeOption, out var attributeMerge);
mergeOption = !attributeMerge.Value.IsNull() ? (LambdaMerge)attributeMerge.Value : LambdaMerge.And;
}
return(predicate);
}
public static async Task <Expression <Func <TValue, object> > > CreateGenericOrderBy <TValue, TFilter>(
this IPageConfig pageConfig,
ICacheRepository cacheRepository,
CancellationToken token)
{
var key = typeof(TFilter).Name;
var dictionary = await cacheRepository.
GetDictionaryAttribute(key, pageConfig.Order, token).
ConfigureAwait(false);
dictionary.TryGetValue(NameProperty, out var nameField);
var order = (string)nameField.Value ?? pageConfig.Order;
return(await GetGenericExpression <TValue>(order, cacheRepository, token).
ConfigureAwait(false));
}