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B2016-115 the comparison of the contents of RO.FST files would also be seen as different (and loading into memory) even when user created a new RO.fst without making any RO changes. We needed to skip past the RO.FST header information in the file which contains the date/time the FST was created. Also needed to do a garbage collection.

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John Jenko
2017-06-08 17:12:52 +00:00
parent 69c78b19aa
commit 036938d9d9
2 changed files with 39 additions and 36 deletions
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40
PROMS/VEPROMS.CSLA.Library/Extension/DocVersionExt.cs
View File

@@ -61,23 +61,8 @@ namespace VEPROMS.CSLA.Library
if (fiRofst.Length != roFstInfo.ROLookup.Length) return fiRofst.LastWriteTimeUtc > roFstInfo.DTS;
// if we can't tell by the DTS or size, compare the contents. Get all of the rodb's
// rofsts of the size of the file & compare bytes. If
ROFstInfoList fstList = ROFstInfoList.GetBySize(rdi.RODbID, (int)fiRofst.Length);
if (fstList.Count > 0)
{
FileStream fsIn = new FileStream(rofstPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
// Create an instance of StreamReader that can read characters from the FileStream.
BinaryReader r = new BinaryReader(fsIn);
byte[] ab = r.ReadBytes((int)fsIn.Length);
fsIn.Close();
foreach (ROFstInfo irofst in fstList)
{
// compare contents by comparing each byte.
for (int i = 0; i < fiRofst.Length; i++)
if (ab[i] != irofst.ROLookup[i]) return true;
}
}
return false;
// rofsts of the size of the file & compare bytes.
return ROFstInfoList.ROFstDiffBySize(rofstPath, rdi.RODbID, (int)fiRofst.Length);
}
}
#region VersionType
@@ -244,25 +229,8 @@ namespace VEPROMS.CSLA.Library
if (fiRofst.Length != roFstInfo.ROLookup.Length) return AddToRoFstLookup(key,fiRofst.LastWriteTimeUtc > roFstInfo.DTS);
// if we can't tell by the DTS or size, compare the contents. Get all of the rodb's
// rofsts of the size of the file & compare bytes. If
ROFstInfoList fstList = ROFstInfoList.GetBySize(rdi.RODbID, (int)fiRofst.Length);
if (fstList.Count > 0)
{
// B2017-078 WCN users with Read only access to the RO FST file where not able to open the file for reading when
// another user was accessing the file. Changed FileShare from Read to ReadWrite
FileStream fsIn = new FileStream(rofstPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
// Create an instance of StreamReader that can read characters from the FileStream.
BinaryReader r = new BinaryReader(fsIn);
byte[] ab = r.ReadBytes((int)fsIn.Length);
fsIn.Close();
foreach (ROFstInfo irofst in fstList)
{
// compare contents by comparing each byte.
for (int i = 0; i < fiRofst.Length; i++)
if (ab[i] != irofst.ROLookup[i]) return AddToRoFstLookup(key,true);
}
}
return AddToRoFstLookup(key,false);
// rofsts of the size of the file & compare bytes.
return AddToRoFstLookup(key, ROFstInfoList.ROFstDiffBySize(rofstPath, rdi.RODbID, (int)fiRofst.Length));
}
}

35
PROMS/VEPROMS.CSLA.Library/Extension/ROFSTExt.cs
View File

@@ -1079,6 +1079,41 @@ namespace VEPROMS.CSLA.Library
throw new DbCslaException("Error on RoFstInfoList.GetBySize", ex);
}
}
public static bool ROFstDiffBySize(string rofstPath, int roDbID, int len)
{
try
{
bool isDifferent = false;
using (ROFstInfoList tmp = GetBySize(roDbID, len))
{
if (tmp.Count > 0)
{
// B2017-078 WCN users with Read only access to the RO FST file where not able to open the file for reading when
// another user was accessing the file. Changed FileShare from Read to ReadWrite
FileStream fsIn = new FileStream(rofstPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
// Create an instance of StreamReader that can read characters from the FileStream.
BinaryReader r = new BinaryReader(fsIn);
byte[] ab = r.ReadBytes((int)fsIn.Length);
r.Close();
fsIn.Close();
foreach (ROFstInfo irofst in tmp)
{
// compare contents by comparing each byte.
for (int i = 20; i < len; i++) // this skips past RO.FST header which has the FST creation date/time
if (ab[i] != irofst.ROLookup[i]) isDifferent = true;
irofst.Dispose();
if (isDifferent) break;
}
}
}
GC.Collect();
return isDifferent;
}
catch (Exception ex)
{
throw new DbCslaException("Error on RoFstInfoList.ROFstDiffBySize", ex);
}
}
private void DataPortal_Fetch(RoFstSizeCriteria criteria)
{
this.RaiseListChangedEvents = false;