/// <summary>
/// Update a projection that matches provided keys or insert a new projection when one doesn't exist.
/// </summary>
public static SaveProjectionStrategyArguments <TMessage, TProjection> Save <TMessage, TProjection>(
this IMessageHandlingStrategyConfiguration <TMessage, TProjection> source
) where TProjection : class, new()
{
var arguments = new SaveProjectionStrategyArguments <TMessage, TProjection>();
((IContainMessageHandlingStrategyFactory <TMessage, TProjection>)source).SetFactory(() =>
{
Mappers <TMessage, TProjection> mappers = arguments.Mappers;
Keys <TMessage, TProjection> keys = arguments.Keys;
return(new SaveProjectionStrategy <TMessage, TProjection>(keys, mappers));
});
return(arguments);
}
/// <summary>
/// Update projection that matches a key or insert a new projection when no matching projection found by a provided
/// value.
/// </summary>
/// <typeparam name="TMessage">A message type</typeparam>
/// <typeparam name="TProjection">A projection type</typeparam>
/// <typeparam name="TValue">A type of projection property</typeparam>
/// <param name="source">An argument builder that contains resulting mapper</param>
/// <param name="projectionProperty">An expression that identifies a projection property</param>
/// <param name="value"></param>
/// <returns>An argument builder that contains resulting filter</returns>
public static SaveProjectionStrategyArguments <TMessage, TProjection> WithKey <TMessage, TProjection, TValue>(
this SaveProjectionStrategyArguments <TMessage, TProjection> source,
Expression <Func <TProjection, TValue> > projectionProperty,
TValue value)
{
Action <TProjection, TValue> action = ReflectionHelpers.CreateSetOperation(projectionProperty);
Mapper <TMessage, TProjection> mapper = Mapper <TMessage, TProjection> .Create((e, p) => action(p, value));
Filter <TMessage> filter = Filter <TMessage> .Create(projectionProperty, value);
Key <TMessage, TProjection> key = Key <TMessage, TProjection> .Create(filter, mapper);
source.Register(key);
return(source);
}
/// <summary>
/// Update projection that matches a key or insert a new projection when no matching projection found by a property
/// from a message with the same name as in a projection.
/// </summary>
/// <typeparam name="TMessage">A message type</typeparam>
/// <typeparam name="TProjection">A projection type</typeparam>
/// <typeparam name="TValue">A type of projection property</typeparam>
/// <param name="source">An argument builder that contains resulting mapper</param>
/// <param name="projectionProperty">An expression that identifies a projection property</param>
/// <returns>An argument builder that contains resulting filter</returns>
public static SaveProjectionStrategyArguments <TMessage, TProjection> WithKey <TMessage, TProjection, TValue>(
this SaveProjectionStrategyArguments <TMessage, TProjection> source,
Expression <Func <TProjection, TValue> > projectionProperty)
{
PropertyInfo propertyInfo = ReflectionHelpers.GetMessagePropertyInfo <TMessage, TProjection, TValue>(projectionProperty);
Func <TMessage, TValue> getValue = e => ReflectionHelpers.GetPropertyValue <TMessage, TValue>(e, propertyInfo);
Action <TProjection, TValue> action = ReflectionHelpers.CreateSetOperation(projectionProperty);
Mapper <TMessage, TProjection> mapper = Mapper <TMessage, TProjection> .Create((e, p) => action(p, getValue(e)));
Filter <TMessage> filter = Filter <TMessage> .Create(projectionProperty, getValue);
Key <TMessage, TProjection> key = Key <TMessage, TProjection> .Create(filter, mapper);
source.Register(key);
return(source);
}
