public bool Initialize(Indices indices)
{
if (indices == null)
{
return(true);
}
var databaseDirectory = _databaseContext.DatabaseConfigurations.Storage.StorageProvider.DatabasePath + _databaseContext.DatabaseName;
foreach (var config in indices.IndexConfigurations.Values)
{
IIndex index = new BPlusIndex(config, _collectionName, databaseDirectory, this);
if (_attributeToNameReference.TryAdd(index.IndexKey.ToString(), index.Name))
{
try
{
index.Initialize();
if (!_indexes.TryAdd(index.Name, index))
{
string removedAttribs;
_attributeToNameReference.TryRemove(index.IndexKey.ToString(), out removedAttribs);
index.Dispose();
if (LoggerManager.Instance.IndexLogger != null)
{
LoggerManager.Instance.IndexLogger.Error("BPlusIndex",
"Failed to initialize index: " + index.Name + ", an index with name " +
index.Name + "already exists. ");
}
}
}
catch (Exception ex)
{
if (LoggerManager.Instance.IndexLogger != null)
{
LoggerManager.Instance.IndexLogger.Error("BPlusIndex",
"Failed to initialize index: " + index.Name + ", Corruption detected, " + ex.Message +
index.Name + ", regenerating index... ");
}
string removedAttribs;
_attributeToNameReference.TryRemove(index.IndexKey.ToString(), out removedAttribs);
index.Destroy();
RecreateIndex(config);
continue;
}
}
else
{
if (LoggerManager.Instance.IndexLogger != null)
{
LoggerManager.Instance.IndexLogger.Error("BPlusIndex",
"Failed to initialize index: " + index.Name + ", an index on attributes " +
index.Attributes.ToString() + "already exists. ");
}
}
index.IsFunctional = true;
persistanceManager.RegisterPersister((BPlusIndex)index);
}
return(true);
}
public void RecreateIndex(IndexConfiguration indexConfig)
{
var databaseDirectory = _databaseContext.DatabaseConfigurations.Storage.StorageProvider.DatabasePath +
_databaseContext.DatabaseName;
IIndex removedIndex;
if (_indexes.TryRemove(indexConfig.Name, out removedIndex))
{
string attributes;
_attributeToNameReference.TryRemove(removedIndex.IndexKey.ToString(), out attributes);
}
IIndex index = new BPlusIndex(indexConfig, _collectionName, databaseDirectory, this);
if (!_attributeToNameReference.TryAdd(index.IndexKey.ToString(), index.Name))
{
_indexes.TryAdd(removedIndex.Name, removedIndex);
_attributeToNameReference.TryAdd(removedIndex.IndexKey.ToString(), removedIndex.Name);
throw new IndexException(ErrorCodes.Indexes.INDEX_ALREADY_DEFINED_FOR_ATTRIBUTES,
new[] { index.IndexKey.ToString() });
}
if (removedIndex != null)
{
removedIndex.Destroy();
}
index.Initialize();
if (_store != null)
{
if (!_indexes.TryAdd(index.Name, index))
{
index.Destroy();
if (LoggerManager.Instance.IndexLogger != null)
{
LoggerManager.Instance.IndexLogger.Error("BPlusIndex",
"Failed to initialize index: " + index.Name + ", an index with name " +
index.Name + "already exists. ");
}
}
PopulateIndex(index, _store);
}
}