/// <summary>
/// Creates a new storage instance with specified types of keys and values.
/// </summary>
/// <typeparam name="TKey">The type of key</typeparam>
/// <typeparam name="TValue">The type of value</typeparam>
/// <param name="keySerializer">Object implementing ISerializer interface for key serialization</param>
/// <param name="valueSerializer">Object implementing ISerializer interface for value serialization</param>
/// <param name="settings">Setiings of creating storage</param>
/// <returns>New storage instance</returns>
public IKeyValueStorage <KeyOf <TKey>, ValueOf <TValue> > CreateRadixTreeStorage <TKey, TValue>(ISerializer <TKey> keySerializer,
ISerializer <TValue> valueSerializer,
RadixTreeStorageSettings settings)
{
bool usePageCache = settings.CacheSettings != null;
if (settings.MaxEmptyPages < 0)
{
throw new ArgumentException("MaxEmptyPages shouldn't be negative", nameof(settings));
}
if (usePageCache)
{
if (settings.CacheSettings.MaxCachedPages < 0)
{
throw new ArgumentException("MaxCachedPages shouldn't be negative", nameof(settings));
}
if (settings.CacheSettings.MaxDirtyPages < 0)
{
throw new ArgumentException("MaxDirtyPages shouldn't be negative", nameof(settings));
}
if (settings.CacheSettings.MaxDirtyPages > settings.CacheSettings.MaxCachedPages)
{
throw new ArgumentException("MaxDirtyPages shouldn be equal to or less than MaxCachedPages", nameof(settings));
}
}
IPageManager pageManager = null;
IPageManager fsPageManager = null;
try
{
fsPageManager = new FileSystemPageManager((int)settings.PageSize, settings.ForcedWrites, 1, true)
{
MaxEmptyPages = settings.MaxEmptyPages
};
pageManager = usePageCache ?
new CachingPageManager(fsPageManager, settings.CacheSettings.MaxCachedPages, settings.CacheSettings.MaxDirtyPages)
: fsPageManager;
var ks = new Serializer <KeyOf <TKey> >(obj => keySerializer.Serialize(obj), bytes => keySerializer.Deserialize(bytes));
var vs = new Serializer <ValueOf <TValue> >(obj => valueSerializer.Serialize(obj), bytes => valueSerializer.Deserialize(bytes));
var radixTree = new RadixTree <KeyOf <TKey>, ValueOf <TValue> >(
new RadixTreeNodeStorage(pageManager),
new ValueStorage <ValueOf <TValue> >(new MemoryManager(new FreeSpaceMap(pageManager), pageManager), vs), ks);
return(new RadixTreeKeyValueStorage <KeyOf <TKey>, ValueOf <TValue> >(pageManager, radixTree, settings.AutoFlushInterval, settings.AutoFlushTimeout));
}
catch (Exception)
{
if (pageManager != null)
{
pageManager.Close();
}
else
{
fsPageManager?.Close();
}
throw;
}
}
/// <summary>
/// Creates a new storage instance with specified types of keys and values.
/// </summary>
/// <typeparam name="TKey">The type of key</typeparam>
/// <typeparam name="TValue">The type of value</typeparam>
/// <param name="keySerializer">Object implementing ISerializer interface for key serialization</param>
/// <param name="valueSerializer">Object implementing ISerializer interface for value serialization</param>
/// <param name="settings">Setiings of creating storage</param>
/// <returns>New storage instance</returns>
public IBPlusTreeKeyValueStorage <ComparableKeyOf <TKey>, ValueOf <TValue> > CreateBPlusTreeStorage <TKey, TValue>(ISerializer <TKey> keySerializer,
ISerializer <TValue> valueSerializer,
BPlusTreeStorageSettings settings)
where TKey : IComparable
{
bool usePageCache = settings.CacheSettings != null;
if (settings.MaxEmptyPages < 0)
{
throw new ArgumentException("MaxEmptyPages shouldn't be negative", nameof(settings));
}
if (usePageCache)
{
if (settings.CacheSettings.MaxCachedPages < 0)
{
throw new ArgumentException("MaxCachedPages shouldn't be negative", nameof(settings));
}
if (settings.CacheSettings.MaxDirtyPages < 0)
{
throw new ArgumentException("MaxDirtyPages shouldn't be negative", nameof(settings));
}
if (settings.CacheSettings.MaxDirtyPages > settings.CacheSettings.MaxCachedPages)
{
throw new ArgumentException("MaxDirtyPages shouldn be equal to or less than MaxCachedPages", nameof(settings));
}
}
IPageManager pageManager = null;
IPageManager fsPageManager = null;
try
{
var asyncWriteBuffer = usePageCache ? Math.Min(settings.CacheSettings.MaxDirtyPages, 1000) : 100;
fsPageManager = new FileSystemPageManager((int)settings.PageSize, settings.ForcedWrites, asyncWriteBuffer, true)
{
MaxEmptyPages = settings.MaxEmptyPages
};
pageManager = usePageCache ?
new CachingPageManager(fsPageManager, settings.CacheSettings.MaxCachedPages, settings.CacheSettings.MaxDirtyPages)
: fsPageManager;
var ks = new Serializer <ComparableKeyOf <TKey> >(obj => keySerializer.Serialize(obj), bytes => keySerializer.Deserialize(bytes));
var vs = new Serializer <ValueOf <TValue> >(obj => valueSerializer.Serialize(obj), bytes => valueSerializer.Deserialize(bytes));
if (settings.MaxKeySize <= 0)
{
throw new ArgumentException("MaxKeySize size should be positive", nameof(settings));
}
var bPlusTree = new BPlusTree <ComparableKeyOf <TKey>, ValueOf <TValue> >(
new BPlusTreeNodeStorage <ComparableKeyOf <TKey> >(pageManager, ks, settings.MaxKeySize),
new ValueStorage <ValueOf <TValue> >(new MemoryManager(new FreeSpaceMap(pageManager), pageManager), vs));
return(new BPlusTreeKeyValueStorage <ComparableKeyOf <TKey>, ValueOf <TValue> >(pageManager, bPlusTree, settings.MaxKeySize, settings.AutoFlushInterval, settings.AutoFlushTimeout));
}
catch (Exception)
{
if (pageManager != null)
{
pageManager.Close();
}
else
{
fsPageManager?.Close();
}
throw;
}
}