private CategoryInformation CreateCategory(string categoryName)
{
var nextCategoryIndex = _tableHeaderStructure.CategoriesCount++;
var newCategory = new CategoryInformation
{
CategoryIndex = nextCategoryIndex,
CategoryName = categoryName,
LogsCount = 0,
IsNewCategory = true
};
_categoriesByName[categoryName] = newCategory;
_categoriesByIndex[nextCategoryIndex] = newCategory;
return(newCategory);
}
private void OpenExistingTable()
{
// Attempt to read table data.
_tableHeaderStorage.Open();
_logsStorage.Open();
_logsDataStorage.Open();
_categoriesStorage.Open();
_tableHeaderStorage.ReadStructure(ref _tableHeaderStructure);
// Load categories.
var oneCategoryEntry = default(RaxCategoryEntry);
for (int i = 0; i < _tableHeaderStructure.CategoriesCount; i++)
{
var category = new CategoryInformation();
_categoriesStorage.SetPositionOffset(i * _catSize);
_categoriesStorage.ReadStructure(ref oneCategoryEntry);
category.CategoryIndex = i;
category.CategoryName = new string(oneCategoryEntry.CategoryName, 0, oneCategoryEntry.CategoryRealNameLengthInBytes / 2);
category.LogsCount = oneCategoryEntry.Header.LogsCountInCategory;
category.MinTimestamp = oneCategoryEntry.Header.MinTimestamp;
category.MaxTimestamp = oneCategoryEntry.Header.MaxTimestamp;
_categoriesByIndex[category.CategoryIndex] = category;
_categoriesByName[category.CategoryName] = category;
}
// Load indexes
for (int year = new DateTime(_tableHeaderStructure.MinTimestamp).Year;
year <= new DateTime(_tableHeaderStructure.MaxTimestamp).Year;
++year)
{
GetOrCreateYearIndexStorage(year);
}
}
