/// For SUBBLK.dbf// alle blokker
/// For blocknumber X:
/// if subbloktype = 10
/// Timestamp1 er nytt
/// Attribute : set bit number 5av7
/// if subbloktype = 20
/// Timestamp1 og 2 er nytt
/// For Baustein.dbf //liste over alle blokker
/// For blocknumber X:
/// if typ = 10 ///
/// Attribs: ? Timestamp1 er nytt // Unknown how this is built up, so skipping this step.
/// For BSTCNTOF.dbf // Block folder list // modifiser timestamp.
/// <summary>
/// Clear the NonRetain attribute of all DataBlocks.
/// </summary>
/// <returns>A collection of the modified DataBlocks</returns>
public DbItemsCollection clearNonRetainAttr()
{
DateTime now = DateTime.Now;
string newTime = encoding.GetString(s7timeFromDateTime(now));
DbItemsCollection dbItemsCollection = getRelevantBlocks(NonRetain: false);
updateBlockItemsAttr(dbItemsCollection, NonRetain: false, newTime: newTime);
updateBlocksListItemsAttr(dbItemsCollection, NonRetain: false, newTime: newTime);
return(dbItemsCollection);
}
private DbItemsCollection getRelevantBlocks(bool NonRetain)
{
DbfFile dbf = new DbfFile(encoding);
dbf.Open(blocksPath, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
DbfRecord record = new DbfRecord(dbf.Header);
DbItemsCollection dbItemsCollection = new DbItemsCollection();
while (dbf.ReadNext(record))
{
if (record.IsDeleted)
{
continue;
}
try
{
DbItem dbItem = new DbItem(record, DatabaseType.NormalBlocks);
if (dbItem.bBlockType == DbType10 ||
dbItem.bBlockType == DbType20) //DB
{
dbItemsCollection.Add(dbItem.DatabaseId, dbItem);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
dbf.Close();
// Remove entries that only contain DbType10 or 20, or where
// the attribute is identical.
List <int> removeIndexes = new List <int>();
foreach (var blockItem in dbItemsCollection.getDbItems())
{
if (!blockItem.Value.ContainsKey(DbType10) ||
!blockItem.Value.ContainsKey(DbType20) ||
blockItem.Value[DbType10].currentNonRetain == NonRetain)
{
removeIndexes.Add(blockItem.Key);
}
}
foreach (var key in removeIndexes)
{
dbItemsCollection.Remove(key);
}
return(dbItemsCollection);
}
/// <summary>
/// Update SUBBLK.DBF
/// This file contains the all blocks, which contains
/// the actual NonRetain attribute and timestamp
/// that will be shown in the block online.
/// </summary>
/// <param name="dbItemsCollection"></param>
/// <param name="NonRetain"></param>
/// <param name="newTime"></param>
private void updateBlockItemsAttr(
DbItemsCollection dbItemsCollection,
bool NonRetain,
string newTime = null)
{
DbfFile dbf = new DbfFile(encoding);
dbf.Open(blocksPath, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
foreach (var blockItems in dbItemsCollection.getDbItems().Values)
{
if (!blockItems.ContainsKey(DbType10))
{
continue;
}
// Update only if the current attribute state is different from the given one.
if (!blockItems[DbType10].currentNonRetain == NonRetain)
{
// update reader with the saved record
DbfRecord rec = dbf.Read(blockItems[DbType10].recIndex);
// Modify the record stored in memory
blockItems[DbType10].updateDbItemAttribute(
rec, NonRetain, newTime);
// Write the modified record to the database
dbf.Update(rec);
if (blockItems.ContainsKey(DbType20))
{
// update reader with the saved record
rec = dbf.Read(blockItems[DbType20].recIndex);
// Modify the record stored in memory
blockItems[DbType20].updateDbItemAttribute(
rec, NonRetain, newTime);
// Write the modified record to the database
dbf.Update(rec);
}
}
else
{
}
}
dbf.Close();
}
/// <summary>
/// Update BAUSTEIN.DBF (only timestamp, attribs buildup not known)
/// This is needed for the compare function to detect the difference.
/// </summary>
/// <param name="NonRetain"></param>
/// <param name="newTime"></param>
private void updateBlocksListItemsAttr(
DbItemsCollection dbItemsCollection,
bool NonRetain,
string newTime = null)
{
DbfFile dbf = new DbfFile(encoding);
dbf.Open(blocksListPath, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
DbfRecord record = new DbfRecord(dbf.Header);
while (dbf.ReadNext(record))
{
if (record.IsDeleted)
{
continue;
}
try
{
DbItem dbItem = new DbItem(record, DatabaseType.NormalBlocksList);
//Only one record with each ID
if (dbItemsCollection.getDbItems().ContainsKey(dbItem.DatabaseId) &&
dbItemsCollection.getDbItems()
[dbItem.DatabaseId][DbType10].currentNonRetain != NonRetain)
{
//Update attribute with new timestamp1
dbItem.updateDbItemAttribs(record, newTime);
dbf.Update(record);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
dbf.Close();
}
/// <summary>
/// Undo clearing the NonRetain attribute.
/// Must be called after clearNonRetainAttr(), with
/// its result as an input.
/// </summary>
/// <param name="dbItemsCollection"></param>
public void undoClearingNonRetainAttr(DbItemsCollection dbItemsCollection)
{
updateBlockItemsAttr(dbItemsCollection, NonRetain: true);
updateBlocksListItemsAttr(dbItemsCollection, NonRetain: true);
}
