/// <summary>
/// Read all data from datafile using a pageID as reference. If data is not in DataPage, read from ExtendPage.
/// </summary>
public byte[] Read(PageAddress blockAddress)
{
var block = this.GetBlock(blockAddress);
// if there is a extend page, read bytes all bytes from extended pages
if (block.ExtendPageID != uint.MaxValue)
{
return this.ReadExtendData(block.ExtendPageID);
}
return block.Data;
}
/// <summary>
/// Get a node inside a page using PageAddress - Returns null if address IsEmpty
/// </summary>
public IndexNode GetNode(PageAddress address)
{
if (address.IsEmpty) return null;
var page = _pager.GetPage<IndexPage>(address.PageID);
return page.Nodes[address.Index];
}
/// <summary>
/// Get a data block from a DataPage using address
/// </summary>
public DataBlock GetBlock(PageAddress blockAddress)
{
var page = _pager.GetPage<DataPage>(blockAddress.PageID);
return page.DataBlocks[blockAddress.Index];
}
/// <summary>
/// Get a data block from a DataPage using address
/// </summary>
public DataBlock GetBlock(PageAddress blockAddress)
{
var page = _pager.GetPage <DataPage>(blockAddress.PageID);
return(page.DataBlocks[blockAddress.Index]);
}