protected override Object CreateValueForExistingPropertyValue(IPropertyValueFactory propertyValueFactory, Object instance,
PropertyInfo propertyInfo, Object value)
{
if (propertyValueFactory == null)
{
throw new ArgumentNullException(nameof(propertyValueFactory));
}
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
if (propertyInfo == null)
{
throw new ArgumentNullException(nameof(propertyInfo));
}
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
var propertyValue = (IValueAssociation)this.CreateNewPropertyValue(propertyValueFactory, instance, propertyInfo, value);
return(propertyValue.Value);
}
protected override PropertyValue CreateNewPropertyValue(IPropertyValueFactory propertyValueFactory, Object instance,
PropertyInfo propertyInfo, Object value)
{
if (propertyValueFactory == null)
{
throw new ArgumentNullException(nameof(propertyValueFactory));
}
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
if (propertyInfo == null)
{
throw new ArgumentNullException(nameof(propertyInfo));
}
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
return(propertyValueFactory.CreatePropertyValue(
PropertyValueCreationContext.ForExistingPropertyValue(propertyInfo,
new InstanceDescriptorCreationContext(instance, this.instanceRelationStore), value)));
}
public PropertyValueInfo(IProperty property, object?value, ValueSource?valueSource, IPropertyValueFactory propertyValueFactory)
{
Property = property;
Value = value;
ValueSource = valueSource;
PropertyValueFactory = propertyValueFactory;
}
/// <summary>
/// Creates factory that caches <see cref="IPropertyValue"/> for the same property and value pairs.
/// </summary>
/// <param name="propertyValueFactory">Factory.</param>
/// <param name="propertyComparer">Optional comparer. Default: <see cref="PropertyComparer.ByReferenceComparer"/>.</param>
/// <param name="maxItemCount">Max item count in cache.</param>
/// <returns>New cached <see cref="IPropertyValueFactory"/>.</returns>
public static IPropertyValueFactory Cached(this IPropertyValueFactory propertyValueFactory, IEqualityComparer <IProperty>?propertyComparer = null, int?maxItemCount = null)
{
propertyValueFactory.AssertArgumentNotNull(nameof(propertyValueFactory));
return(new CachedPropertyValueFactory(
propertyValueFactory,
propertyComparer ?? PropertyComparer.ByReferenceComparer,
maxItemCount: maxItemCount));
}
/// <summary>
/// Initializes a new instance of the <see cref="CachedPropertyValueFactory"/> class.
/// </summary>
/// <param name="propertyValueFactory">Real factory.</param>
/// <param name="propertyComparer">Property comparer.</param>
/// <param name="maxItemCount">Max item count in cache.</param>
public CachedPropertyValueFactory(
IPropertyValueFactory propertyValueFactory,
IEqualityComparer <IProperty> propertyComparer,
int?maxItemCount = null)
{
propertyValueFactory.AssertArgumentNotNull(nameof(propertyValueFactory));
propertyComparer.AssertArgumentNotNull(nameof(propertyComparer));
_propertyValueFactory = propertyValueFactory;
var propertyValueKeyComparer = new PropertyValueKeyComparer(propertyComparer);
if (maxItemCount == null)
{
// unlimited cache
_propertyValuesCache = new ConcurrentDictionaryAdapter <PropertyValueInfo, IPropertyValue>(new ConcurrentDictionary <PropertyValueInfo, IPropertyValue>(propertyValueKeyComparer));
}
else
{
// limited cache
_propertyValuesCache = new Core.TwoLayerCache <PropertyValueInfo, IPropertyValue>(maxItemCount.Value, propertyValueKeyComparer);
}
}
/// <summary> /// Returns the value of an existing <see cref="PropertyValue"/>. /// </summary> /// <param name="propertyValueFactory">The <see cref="IPropertyValueFactory"/>.</param> /// <param name="instance">The instance of the complex object.</param> /// <param name="propertyInfo">The <see cref="PropertyInfo"/> which is intercepted.</param> /// <param name="value">The intercepted property value.</param> /// <returns>The value of the existing <see cref="PropertyValue"/>.</returns> protected abstract Object CreateValueForExistingPropertyValue(IPropertyValueFactory propertyValueFactory, Object instance, PropertyInfo propertyInfo, Object value);
/// <summary> /// Creates a new <see cref="PropertyValue"/>. /// </summary> /// <param name="propertyValueFactory">The <see cref="IPropertyValueFactory"/>.</param> /// <param name="instance">The instance of the complex object.</param> /// <param name="propertyInfo">The <see cref="PropertyInfo"/> which is intercepted.</param> /// <param name="value">The intercepted property value.</param> /// <returns>The created <see cref="PropertyValue"/>.</returns> protected abstract PropertyValue CreateNewPropertyValue(IPropertyValueFactory propertyValueFactory, Object instance, PropertyInfo propertyInfo, Object value);
protected override Object CreateValueForExistingPropertyValue(
[CanBeNull] IPropertyValueFactory propertyValueFactory, [CanBeNull] Object instance,
[CanBeNull] PropertyInfo propertyInfo, [CanBeNull] Object value)
{
return(value);
}
