public List <int> FindPagedRows(string filter, int page, int pageSize, int skip, out int total)
{
var result = new List <int>();
while (_internalOP)
{
Thread.Sleep(50);
}
WAHBitArray bits = ExecutionPlan(filter);
var indexes = bits.GetBitIndexes().ToList();
total = indexes.Count;
int currentPos = 0, pageStartPos = page * pageSize + (skip > 0 ? skip : 0), pageEndPos = pageStartPos + pageSize;
bool isPageable = pageStartPos < pageEndPos;
if (!isPageable)
{
return(indexes);
}
foreach (int i in indexes)
{
currentPos++;
if (currentPos <= pageStartPos || currentPos > pageEndPos)
{
continue;
}
result.Add(i);
if (result.Count == pageSize)
{
break;
}
}
return(result);
}
public void TestWAHBitArray3()
{
var b = new WAHBitArray();
int count = 25;
for (int i = 0; i < 5; i++)
{
b.Set(i, false);
}
for (int i = 5; i < count + 5; i++)
{
b.Set(i, true);
}
for (int i = 30; i < 64; i++)
{
b.Set(i, i == 35);
}
for (int i = 64; i < 65; i++)
{
b.Set(i, true);
}
var expected = b.GetBitIndexes().ToArray();
var b2 = new WAHBitArray(WAHBitArray.TYPE.Compressed_WAH, b.GetCompressed());
var actual = b2.GetBitIndexes().ToArray();
expected.Should(Be.EqualTo(actual), "expected.Should(Be.EqualTo(actual))");
}
public List <TDocument> FindPagedDocuments <TDocument>(WAHBitArray plan, int page, int pageSize, int skip, out int total)
where TDocument : Document
{
var result = new List <TDocument>();
int pageStartPos = page * pageSize + (skip > 0 ? skip : 0), pageEndPos = pageStartPos + pageSize;
int[] indexes = plan.GetBitIndexes().ToArray();
total = indexes.Length;
for (int k = total - pageStartPos - 1; k > total - pageEndPos - 1; k--)
{
if (k < 0)
{
break;
}
var index = indexes[k];
if (index > _lastDocNum - 1)
{
continue;
}
byte[] b = _docs.ReadData(index);
var d = JSON.Instance.ToObject <TDocument>(Helper.GetString(b));
result.Add(d);
}
return(result);
}
public void TestWAHBitArray1()
{
var b = new WAHBitArray();
int count = 31;
for (int i = 0; i < count; i++)
{
b.Set(i, true);
}
var expected = b.GetBitIndexes().ToArray();
var b2 = new WAHBitArray(WAHBitArray.TYPE.Compressed_WAH, b.GetCompressed());
var actual = b2.GetBitIndexes().ToArray();
expected.Should(Be.EqualTo(actual), "expected.Should(Be.EqualTo(actual))");
}