/// <summary>
/// Получить информацию об индексах
/// </summary>
/// <param name="storageIndexItemInfoCollection">Информация об индексах из хранилища</param>
/// <param name="tableInfo">Информация о таблице</param>
/// <returns>Информацию об индексах</returns>
private List<IndexInfo> GetStorageIndexInfo(IEnumerable<StorageIndexItem> storageIndexItemInfoCollection, TableInfo tableInfo)
{
var indexes = new List<IndexInfo>();
//группируем по таблицам
List<StorageIndexItem> tableIndexGroupInfo = storageIndexItemInfoCollection.Where(i => i.TableName == tableInfo.Name).ToList();
//группируем по именам индексов
var indexNameGroups = tableIndexGroupInfo.GroupBy(i => i.IndexName).ToList();
foreach (var indexNameGroup in indexNameGroups)
{
var isClustered = false;
var isUnique = false;
var entityIndexInfo = new IndexInfo() { Name = indexNameGroup.Key, TableInfo = tableInfo };
var indexMemberItems = indexNameGroup.Where(i => i.IsIncludedColumn == false).ToList();
var indexIncludeItems = indexNameGroup.Where(i => i.IsIncludedColumn == true).ToList();
indexMemberItems.Sort(CompareStorageIndexItemOrder);
indexIncludeItems.Sort(CompareStorageIndexItemOrder);
int memberColumnOrder = 0;
int includeColumnOrder = 0;
foreach (var indexMemberItem in indexMemberItems)
{
isClustered = indexMemberItem.IndexType.Equals("CLUSTERED");
isUnique = indexMemberItem.IsUnique;
var indexMemberInfo = new IndexMemberInfo()
{
ColumnInfo = new ColumnInfo(tableInfo, indexMemberItem.ColumnName),
IndexName = indexMemberItem.IndexName,
ColumnOrder = memberColumnOrder,
SortDirection = indexMemberItem.IsDescending == true ? SortDirection.Desc : SortDirection.Asc
};
entityIndexInfo.IndexMemberInfoCollection.Add(indexMemberInfo);
memberColumnOrder += 1;
}
foreach (var indexIncludeItem in indexIncludeItems)
{
isClustered = indexIncludeItem.IndexType.Equals("CLUSTERED");
isUnique = indexIncludeItem.IsUnique;
var indexMemberInfo = new IndexIncludeInfo()
{
ColumnInfo = new ColumnInfo(tableInfo, indexIncludeItem.ColumnName),
IndexName = indexIncludeItem.IndexName,
ColumnOrder = includeColumnOrder,
};
entityIndexInfo.IndexIncludeInfoCollection.Add(indexMemberInfo);
includeColumnOrder += 1;
}
entityIndexInfo.IsClustered = isClustered;
entityIndexInfo.IsUnique = isUnique;
indexes.Add(entityIndexInfo);
}
return indexes;
}
/// <summary>
/// Получить информацию об индексах
/// </summary>
/// <param name="storageIndexItemInfoCollection">Информация об индексах из хранилища</param>
/// <param name="tableInfo">Информация о таблице</param>
/// <returns>Информацию об индексах</returns>
private List <IndexInfo> GetStorageIndexInfo(IEnumerable <StorageIndexItem> storageIndexItemInfoCollection, TableInfo tableInfo)
{
var indexes = new List <IndexInfo>();
//группируем по таблицам
List <StorageIndexItem> tableIndexGroupInfo = storageIndexItemInfoCollection.Where(i => i.TableName == tableInfo.Name).ToList();
//группируем по именам индексов
var indexNameGroups = tableIndexGroupInfo.GroupBy(i => i.IndexName).ToList();
foreach (var indexNameGroup in indexNameGroups)
{
var isClustered = false;
var isUnique = false;
var entityIndexInfo = new IndexInfo()
{
Name = indexNameGroup.Key, TableInfo = tableInfo
};
var indexMemberItems = indexNameGroup.Where(i => i.IsIncludedColumn == false).ToList();
var indexIncludeItems = indexNameGroup.Where(i => i.IsIncludedColumn == true).ToList();
indexMemberItems.Sort(CompareStorageIndexItemOrder);
indexIncludeItems.Sort(CompareStorageIndexItemOrder);
int memberColumnOrder = 0;
int includeColumnOrder = 0;
foreach (var indexMemberItem in indexMemberItems)
{
isClustered = indexMemberItem.IndexType.Equals("CLUSTERED");
isUnique = indexMemberItem.IsUnique;
var indexMemberInfo = new IndexMemberInfo()
{
ColumnInfo = new ColumnInfo(tableInfo, indexMemberItem.ColumnName),
IndexName = indexMemberItem.IndexName,
ColumnOrder = memberColumnOrder,
SortDirection = indexMemberItem.IsDescending == true ? SortDirection.Desc : SortDirection.Asc
};
entityIndexInfo.IndexMemberInfoCollection.Add(indexMemberInfo);
memberColumnOrder += 1;
}
foreach (var indexIncludeItem in indexIncludeItems)
{
isClustered = indexIncludeItem.IndexType.Equals("CLUSTERED");
isUnique = indexIncludeItem.IsUnique;
var indexMemberInfo = new IndexIncludeInfo()
{
ColumnInfo = new ColumnInfo(tableInfo, indexIncludeItem.ColumnName),
IndexName = indexIncludeItem.IndexName,
ColumnOrder = includeColumnOrder,
};
entityIndexInfo.IndexIncludeInfoCollection.Add(indexMemberInfo);
includeColumnOrder += 1;
}
entityIndexInfo.IsClustered = isClustered;
entityIndexInfo.IsUnique = isUnique;
indexes.Add(entityIndexInfo);
}
return(indexes);
}