public InteriorNode(IGistConfig <TKey, TValue> config, IGistIndexRecords <TKey> records)
: base(config, null)
{
Records = records;
Block = config.Blocks.AllocateBlock(GetBytes());
Block.UserData = this;
}
public static int CreateRoot(IGistConfig <TKey, TValue> config, KeyValuePair <TKey, TValue> record)
{
return(new LeafNode <TKey, TValue>(
config,
config.Ext.CreateLeafRecords(new[] { record }))
.Block.BlockId);
}
public static int CreateRoot(IGistConfig <TKey, TValue> config, IList <KeyValuePair <TKey, int> > records)
{
return(new InteriorNode <TKey, TValue>(
config,
config.Ext.CreateIndexRecords(records)
)
.Block.BlockId);
}
public static INode <TKey, TValue> GetNode(IGistConfig <TKey, TValue> config, int blockId)
{
var block = config.Blocks.GetBlock(blockId);
if (block.UserData != null)
{
return((INode <TKey, TValue>)block.UserData);
}
INode <TKey, TValue> node = null;
using (var stream = new MemoryStream(block.Data, false))
{
using (var reader = new BinaryReader(stream))
{
var header = ReadBlockHeader(reader);
if ((header.Flags & NodeFlags.IsLeafNode) == NodeFlags.IsLeafNode)
{
node = new LeafNode <TKey, TValue>(
config,
block,
config.Ext.CreateLeafRecords(reader)
);
}
else if ((header.Flags & NodeFlags.IsInteriorNode) == NodeFlags.IsInteriorNode)
{
node = new InteriorNode <TKey, TValue>(
config,
block,
config.Ext.CreateIndexRecords(reader)
);
}
}
}
if (node == null)
{
throw new ApplicationException("Bad block header");
}
block.UserData = node;
return(node);
}
public LeafNode(IGistConfig <TKey, TValue> config, IBlock block, IGistLeafRecords <TKey, TValue> records)
: base(config, block)
{
Records = records;
}
public LeafNode(IGistConfig <TKey, TValue> config, IGistLeafRecords <TKey, TValue> records)
: base(config, null)
{
Records = records;
Block = config.Blocks.AllocateBlock(GetBytes());
}
public InteriorNode(IGistConfig <TKey, TValue> config, IBlock block, IGistIndexRecords <TKey> records)
: base(config, block)
{
Records = records;
}
protected Node(IGistConfig <TKey, TValue> config, IBlock block)
{
Config = config;
Block = block;
}
public Gist(IBlockReference blockReference, IGistConfig <TKey, TValue> config)
{
BlockReference = blockReference;
Config = config;
}