/// <summary>
/// Delete one dataBlock
/// </summary>
public DataBlock Delete(CollectionPage col, PageAddress blockAddress)
{
// get page and mark as dirty
var page = _pager.GetPage <DataPage>(blockAddress.PageID, true);
var block = page.DataBlocks[blockAddress.Index];
// mark collection page as dirty
_pager.SetDirty(col);
// if there a extended page, delete all
if (block.ExtendPageID != uint.MaxValue)
{
_pager.DeletePage(block.ExtendPageID, true);
}
// delete block inside page
page.DataBlocks.Remove(block.Position.Index);
// update freebytes + itemcount
page.UpdateItemCount();
// if there is no more datablocks, lets delete the page
if (page.DataBlocks.Count == 0)
{
// first, remove from free list
_pager.AddOrRemoveToFreeList(false, page, col, ref col.FreeDataPageID);
_pager.DeletePage(page.PageID);
}
else
{
// add or remove to free list
_pager.AddOrRemoveToFreeList(page.FreeBytes > DataPage.DATA_RESERVED_BYTES, page, col, ref col.FreeDataPageID);
}
col.DocumentCount--;
return(block);
}
public static string Dump(this PageAddress address)
{
return(address.PageID.Dump() + ":" + address.Index.Dump());
}
public void Write(PageAddress value)
{
this.Write(value.PageID);
this.Write(value.Index);
}
