public TDest To <TDest>(TDest destination, string keyMemberName = null, string flatteningToken = null, bool clearCollections = false)
{
if (destination != null)
{
Action <TSource, TDest> compiledAction = GetCachedActionOverDestination <TDest>(keyMemberName, clearCollections, flatteningToken);
if (compiledAction == null)
{
Expression <Action <TSource, TDest> > queryExpression = GetCachedExpressionOverDestination <TDest>(keyMemberName, clearCollections, flatteningToken) ?? BuildExpressionOverDestination <TDest>(clearCollections, keyMemberName, flatteningToken);
compiledAction = queryExpression.Compile();
string key = GetCacheKey <Action <TSource, TDest> >(flatteningToken, keyMemberName, clearCollections);
DelegateCache.TryAdd(key, compiledAction);
}
compiledAction.Invoke(source, destination);
}
else
{
return(this.To <TDest>(flatteningToken));
}
return(destination);
}
public IEnumerable <TDest> To <TDest>(string flatteningToken = null)
{
Func <TSource, TDest> compiledAction = GetCachedDelegate <TDest>(flatteningToken);
if (compiledAction == null)
{
Expression <Func <TSource, TDest> > queryExpression = GetCachedExpression <TDest>(flatteningToken) ?? BuildExpression <TDest>(flatteningToken);
compiledAction = queryExpression.Compile();
string cacheKey = GetCacheKey <Func <TSource, TDest> >(flatteningToken);
DelegateCache.TryAdd(cacheKey, compiledAction);
}
return(queryableSource.Select(compiledAction));
}
public TDest To <TDest>(string flatteningToken = null)
{
Func <TSource, TDest> compiledAction = GetCachedDelegate <TDest>(flatteningToken);
if (compiledAction == null)
{
Expression <Func <TSource, TDest> > queryExpression = GetCachedExpression <TDest>(flatteningToken) ?? BuildExpression <TDest>(flatteningToken);
compiledAction = queryExpression.Compile();
string key = GetCacheKey <Expression <Func <TSource, TDest> > >(flatteningToken);
DelegateCache.TryAdd(key, compiledAction);
}
return(compiledAction.Invoke(source));
}
public IEnumerable <TDest> To <TDest>(IEnumerable <TDest> destination, string keyMemberName = null, string flatteningToken = null, bool clearCollections = false)
{
if (destination != null)
{
Delegate compiledAction = GetCachedActionOverQueryableDestination <TDest>(keyMemberName, clearCollections, flatteningToken);
if (compiledAction == null)
{
Expression <Action <TSource, TDest> > queryExpression = GetCachedExpressionOverDestination <TDest>(keyMemberName, clearCollections, flatteningToken) ?? BuildExpressionOverDestination <TDest>(clearCollections, keyMemberName, flatteningToken);
ParameterExpression srcMemberExp = Expression.Parameter(queryableSource.GetType(), name: "src");
ParameterExpression dstMemberExp = Expression.Parameter(destination.GetType(), name: "dst");
Expression projectEnumerableOverEnumerableExpression = ProjectEnumerableOverEnumerable(typeof(TSource),
typeof(TDest),
srcMemberExp,
dstMemberExp,
keyMemberName,
clearCollections,
flatteningToken,
new List <string>());
Type builtDelegateType = typeof(Action <,>).MakeGenericType(queryableSource.GetType(), destination.GetType());
LambdaExpression lambda = Expression.Lambda(builtDelegateType, projectEnumerableOverEnumerableExpression, srcMemberExp, dstMemberExp);
compiledAction = lambda.Compile();
string key = GetCacheKey <Delegate>(flatteningToken, keyMemberName, clearCollections);
DelegateCache.TryAdd(key, compiledAction);
}
compiledAction.DynamicInvoke(queryableSource, destination);
}
else
{
return(this.To <TDest>(flatteningToken));
}
return(destination);
}