/// <summary>
/// Write the record.
/// </summary>
public void WriteRecord
(
[NotNull] XrfRecord32 record
)
{
throw new NotImplementedException();
}
/// <summary>
/// Search and read found records.
/// </summary>
public IrbisRecord[] SearchReadSimple
(
string key
)
{
int[] mfns = InvertedFile.SearchSimple(key);
List <IrbisRecord> result = new List <IrbisRecord>();
foreach (int mfn in mfns)
{
try
{
XrfRecord32 xrfRecord = Xrf.ReadRecord(mfn);
if (!xrfRecord.Deleted)
{
MstRecord32 mstRecord = Mst.ReadRecord2(xrfRecord.AbsoluteOffset);
if (!mstRecord.Deleted)
{
IrbisRecord irbisRecord = mstRecord.DecodeRecord();
irbisRecord.Database = Database;
result.Add(irbisRecord);
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
}
return(result.ToArray());
}
/// <summary>
/// Lock/unlock the record.
/// </summary>
public void LockRecord
(
int mfn,
bool flag
)
{
XrfRecord32 record = ReadRecord(mfn);
if (flag != record.Locked)
{
WriteRecord(record);
}
}
public IrbisRecord ReadRecord
(
int mfn
)
{
XrfRecord32 xrfRecord = Xrf.ReadRecord(mfn);
if ((xrfRecord.Status & RecordStatus.PhysicallyDeleted) != 0)
{
return(null);
}
MstRecord32 mstRecord = Mst.ReadRecord2
(
xrfRecord.AbsoluteOffset
);
IrbisRecord result = mstRecord.DecodeRecord();
result.Database = Database;
return(result);
}
public XrfRecord32 Decode
(
int value
)
{
unchecked
{
RecordStatus status = 0;
if ((value & 0xFFFFF800) == 0xFFFFF800)
{
status = RecordStatus.PhysicallyDeleted;
}
else if (value < 0)
{
status = RecordStatus.LogicallyDeleted;
}
int blockNumber = value < 0
? (-(int)(value & 0xFFFFF800) >> 11) - 1
: (value & 0x7FFFF800) >> 11;
int blockOffset = value < 0
? -value & 0x7FF
: value & 0x7FF;
XrfRecord32 result = new XrfRecord32
{
BlockNumber = blockNumber,
BlockOffset = blockOffset,
AbsoluteOffset = MstRecord32.MstBlockSize * (blockNumber - 1)
+ blockOffset,
Status = status
};
return(result);
}
}
