public void Work()
{
// For example - we have already known factory types. We can
// read it from configuration or another source.
var phoneTypes = new List <CreatorGetter.PhoneType>
{
CreatorGetter.PhoneType.Symbian,
CreatorGetter.PhoneType.Android,
CreatorGetter.PhoneType.IOS
};
foreach (var phoneType in phoneTypes)
{
PhoneCreator creator = CreatorGetter.GetCreator(phoneType);
IPhone phone = creator.CreatePhone();
phone.Notify();
}
}
public static T ReturnOnDemandValue <T>(ref T valueStorage, object valueLock, CreatorGetter <T> getValue)
{
if (valueStorage != null)
{
return(valueStorage);
}
lock (valueLock)
{
if (valueStorage == null)
{
valueStorage = getValue();
}
return(valueStorage);
}
}
