public void Set(long position, bool val)
{
lock (_lock)
{
isDirty = true;
if (_size < position && val == true)
{
_size = position;
}
var idx = (int)(position >> 16);
Container c = null;
if (_containers.TryGetValue(idx, out c) == false)
{
//if (Global.useSortedList)
// c = new OffsetContainerSL();
//else
c = new OffsetContainer();
// add container
_containers.Add(idx, c);
}
c.Set(position & _MASK, val);
//if (c.ChangeRequired())
// _containers[idx] = c.Change();
}
}
private Page <T> LoadPage(T key, out PageInfo pageinfo)
{
int pagenum = -1;
// find page in list of pages
bool found = false;
int pos = 0;
if (key != null)
{
pos = FindPageOrLowerPosition(key, ref found);
}
pageinfo = _pageList.GetValue(pos);
pagenum = pageinfo.PageNumber;
Page <T> page;
if (_cache.TryGetValue(pagenum, out page) == false)
{
//load page from disk
page = _index.LoadPageFromPageNumber(pagenum);
_cache.Add(pagenum, page);
}
return(page);
}
public void Commit(bool freeMemory)
{
if (_isDirty == false)
{
return;
}
using (new L(this))
{
log.Debug("writing " + _FileName);
int[] keys = _cache.Keys();
Array.Sort(keys);
foreach (int k in keys)
{
WAHBitArray bmp = null;
if (_cache.TryGetValue(k, out bmp) && bmp.isDirty)
{
SaveBitmap(k, bmp);
bmp.FreeMemory();
bmp.isDirty = false;
}
}
Flush();
if (freeMemory)
{
_cache = //new SafeDictionary<int, WAHBitArray>();
new SafeSortedList <int, WAHBitArray>();
log.Debug(" freeing cache");
}
_isDirty = false;
}
}
private WAHBitArray ExecutionPlan(string filter, int maxsize)
{
//_log.Debug("query : " + filter);
DateTime dt = FastDateTime.Now;
// query indexes
string[] words = filter.Split(' ');
//bool defaulttoand = true;
//if (filter.IndexOfAny(new char[] { '+', '-' }, 0) > 0)
// defaulttoand = false;
WAHBitArray found = null;// WAHBitArray.Fill(maxsize);
foreach (string s in words)
{
int c;
bool not = false;
string word = s;
if (s == "")
{
continue;
}
OPERATION op = OPERATION.AND;
//if (defaulttoand)
// op = OPERATION.AND;
if (word.StartsWith("+"))
{
op = OPERATION.OR;
word = s.Replace("+", "");
}
if (word.StartsWith("-"))
{
op = OPERATION.ANDNOT;
word = s.Replace("-", "");
not = true;
if (found == null) // leading with - -> "-oak hill"
{
found = WAHBitArray.Fill(maxsize);
}
}
if (word.Contains("*") || word.Contains("?"))
{
WAHBitArray wildbits = new WAHBitArray();
// do wildcard search
Regex reg = new Regex("^" + word.Replace("*", ".*").Replace("?", ".") + "$", RegexOptions.IgnoreCase);
foreach (string key in _words.Keys())
{
if (reg.IsMatch(key))
{
_words.TryGetValue(key, out c);
WAHBitArray ba = _bitmaps.GetBitmap(c);
wildbits = DoBitOperation(wildbits, ba, OPERATION.OR, maxsize);
}
}
if (found == null)
{
found = wildbits;
}
else
{
if (not) // "-oak -*l"
{
found = found.AndNot(wildbits);
}
else if (op == OPERATION.AND)
{
found = found.And(wildbits);
}
else
{
found = found.Or(wildbits);
}
}
}
else if (_words.TryGetValue(word.ToLowerInvariant(), out c))
{
// bits logic
WAHBitArray ba = _bitmaps.GetBitmap(c);
found = DoBitOperation(found, ba, op, maxsize);
}
else if (op == OPERATION.AND)
{
found = null;
}
}
if (found == null)
{
return(new WAHBitArray());
}
// remove deleted docs
WAHBitArray ret;
if (_docMode)
{
ret = found.AndNot(_deleted.GetBits());
}
else
{
ret = found;
}
//_log.Debug("query time (ms) = " + FastDateTime.Now.Subtract(dt).TotalMilliseconds);
return(ret);
}