/// <summary>
/// Performs update operations on mikrotik router.
/// Items which are present in 'expected' and are not present in 'original' will be created on mikrotik router.
/// Items which are present in both 'expected' and 'original' will be compared and updated (if are different - see <see cref="Field"/>, <see cref="WithKey"/>).
/// Items which are not present in 'expected' and are present in 'original' will be deleted from mikrotik router.
/// </summary>
/// <returns>List of final entities on mikrotik router after save operation.</returns>
public IEnumerable <TEntity> Save()
{
//TODO ensure all fields set
List <TEntity> result = new List <TEntity>();
Dictionary <string, TEntity> expectedDict = _expected.ToDictionary(_keyExtractor);
Dictionary <string, TEntity> originalDict = _original.ToDictionary(_keyExtractor);
//Delete
foreach (var originalEntityPair in originalDict.Reverse()) //delete from end to begining of the list (just for better show in WinBox)
{
if (!expectedDict.ContainsKey(originalEntityPair.Key)) //present in original + not present in expected => delete
{
_connection.Delete(originalEntityPair.Value);
}
}
//Insert+Update
var mergedFieldNames = ResolveFieldsFieldNames().ToArray();
foreach (var expectedEntityPair in expectedDict.Reverse()) //from last to first ( <= move is indexed as moveBeforeEntity)
{
TEntity originalEntity;
TEntity resultEntity;
if (originalDict.TryGetValue(expectedEntityPair.Key, out originalEntity))
{ //Update //present in both expected and original => update or NOOP
//copy .id from original to expected & save
if (!EntityFieldEquals(originalEntity, expectedEntityPair.Value)) //modified
{
UpdateEntityFields(originalEntity, expectedEntityPair.Value);
_connection.Save(originalEntity, mergedFieldNames);
}
resultEntity = originalEntity;
}
else
{ //Insert //present in expected and not present in original => insert
_connection.Save(expectedEntityPair.Value, mergedFieldNames);
resultEntity = expectedEntityPair.Value;
}
//Move entity to the right position
if (_metadata.IsOrdered)
{
if (result.Count > 0) // last one in the list (first taken) should be just added/leavedOnPosition and the next should be moved before the one which was added immediatelly before <=> result[0]
{
//TODO: only if is in different position
_connection.Move(resultEntity, result[0]); //before lastly added entity (foreach in reversed order)
}
}
result.Insert(0, resultEntity); //foreach in reversed order => put as first in result list
}
return(result);
}
private IEnumerable <TEntity> SaveInternal(bool simulateOnly, out int insertCnt, out int updateCnt, out int deleteCnt, out int moveCnt)
{
insertCnt = 0;
updateCnt = 0;
deleteCnt = 0;
moveCnt = 0;
//TODO ensure all fields set
List <TEntity> result = new List <TEntity>();
Dictionary <string, TEntity> expectedDict = _expected.ToDictionaryEx(_keyExtractor);
Dictionary <string, TEntity> originalDict = _original.ToDictionaryEx(_keyExtractor);
int idx = 0;
Dictionary <string, int> originalIndexes = _original.ToDictionaryEx(_keyExtractor, i => idx++);
//Delete
foreach (var originalEntityPair in originalDict.Reverse()) //delete from end to begining of the list (just for better show in WinBox)
{
if (!expectedDict.ContainsKey(originalEntityPair.Key)) //present in original + not present in expected => delete
{
if (_filterCallback(MergeOperation.Delete, originalEntityPair.Value, default(TEntity)))
{
if (!simulateOnly)
{
LogDml(MergeOperation.Delete, originalEntityPair.Value, default(TEntity));
_connection.Delete(originalEntityPair.Value);
}
deleteCnt++;
}
}
}
//Insert+Update
var mergedFieldNames = ResolveFieldsFieldNames().ToArray();
var insertedFieldNames = ResolveJustForInsertFieldNames().ToArray();
foreach (var expectedEntityPair in expectedDict.Reverse()) //from last to first ( <= move is indexed as moveBeforeEntity)
{
TEntity originalEntity;
TEntity resultEntity;
if (originalDict.TryGetValue(expectedEntityPair.Key, out originalEntity))
{ //Update //present in both expected and original => update or NOOP
//copy .id from original to expected & save
if (!EntityFieldEquals(originalEntity, expectedEntityPair.Value)) //modified
{
if (_filterCallback(MergeOperation.Update, originalEntity, expectedEntityPair.Value))
{
if (!simulateOnly)
{
LogDml(MergeOperation.Update, originalEntity, expectedEntityPair.Value);
UpdateEntityFields(originalEntity, expectedEntityPair.Value);
_connection.Save(originalEntity, mergedFieldNames);
}
updateCnt++;
}
}
resultEntity = originalEntity;
}
else
{ //Insert //present in expected and not present in original => insert
if (_filterCallback(MergeOperation.Insert, default(TEntity), expectedEntityPair.Value))
{
if (!simulateOnly)
{
LogDml(MergeOperation.Insert, default(TEntity), expectedEntityPair.Value);
_connection.Save(expectedEntityPair.Value, mergedFieldNames.Concat(insertedFieldNames));
}
insertCnt++;
}
resultEntity = expectedEntityPair.Value;
}
//Move entity to the right position
if (_metadata.IsOrdered)
{
if (result.Count > 0) // last one in the list (first taken) should be just added/leavedOnPosition and the next should be moved before the one which was added immediatelly before <=> result[0]
{
// only if is in different position (is not after result[0])
int resultEntityIdx, previousEntityIdx = -1;
if (!originalIndexes.TryGetValue(_keyExtractor(resultEntity), out resultEntityIdx) ||
!originalIndexes.TryGetValue(_keyExtractor(result[0]), out previousEntityIdx) ||
resultEntityIdx != previousEntityIdx - 1)
{
if (!simulateOnly)
{
LogMove(resultEntity, resultEntityIdx, previousEntityIdx);
_connection.Move(resultEntity, result[0]); //before lastly added entity (foreach in reversed order)
}
moveCnt++;
}
}
}
result.Insert(0, resultEntity); //foreach in reversed order => put as first in result list
}
return(result);
}
