/// <summary>
///
/// </summary>
/// <param name="entities"></param>
/// <param name="property"></param>
/// <returns></returns>
public static IEnumerable <TResult> Do(IEnumerable <TEntity> entities,
ClassProperty property)
{
// Guard first
Guard(property);
// Variables needed
var key = property.GetHashCode();
// Get from the cache
if (cache.TryGetValue(key, out var func) == false)
{
func = GetFunc(property);
}
// Extract the values
if (entities?.Any() == true)
{
foreach (var entity in entities)
{
yield return(func(entity));
}
}
}
/// <summary>
/// Adds a primary property mapping into a <see cref="ClassProperty"/> object.
/// </summary>
/// <typeparam name="TEntity">The type of the data entity.</typeparam>
/// <param name="classProperty">The instance of <see cref="ClassProperty"/> to be mapped.</param>
/// <param name="force">A value that indicates whether to force the mapping. If one is already exists, then it will be overwritten.</param>
internal static void Add <TEntity>(ClassProperty classProperty,
bool force)
where TEntity : class =>
Add(typeof(TEntity), classProperty, force);
/// <summary>
/// Gets the values of the property of the data entities.
/// </summary>
/// <typeparam name="TEntity">The type of the data entities.</typeparam>
/// <typeparam name="TResult">The result type of the extracted property.</typeparam>
/// <param name="entities">The list of the data entities.</param>
/// <param name="property">The target property.</param>
/// <returns>The values of the property of the data entities.</returns>
public static IEnumerable <TResult> GetEntitiesPropertyValues <TEntity, TResult>(IEnumerable <TEntity> entities,
ClassProperty property)
where TEntity : class
{
return(GetPropertyValuesCache <TEntity, TResult> .Do(entities, property));
}
/// <summary>
/// Creates a new instance of <see cref="PropertyValue"/> class.
/// </summary>
/// <param name="name">The name of the property.</param>
/// <param name="value">The value of the property.</param>
/// <param name="property">The actual property object.</param>
public PropertyValue(string name, object value, ClassProperty property)
{
Name = name;
Value = value;
Property = property;
}
/// <summary>
/// Gets the values of the property of the data entities.
/// </summary>
/// <typeparam name="TEntity">The type of the data entities.</typeparam>
/// <typeparam name="TResult">The result type of the extracted property.</typeparam>
/// <param name="entities">The list of the data entities.</param>
/// <param name="property">The target property.</param>
/// <returns>The values of the property of the data entities.</returns>
internal static IEnumerable <TResult> GetEntitiesPropertyValues <TEntity, TResult>(IEnumerable <TEntity> entities,
ClassProperty property)
where TEntity : class =>
GetPropertyValuesCache <TEntity, TResult> .Do(entities, property);