Struct flatdata::FileResourceStorage

pub struct FileResourceStorage { /* fields omitted */ }

Resource storage on disk using memory mapped files.

Methods

impl FileResourceStorage

pub fn new<P: Into<PathBuf>>(path: P) -> Rc<Self>

Create an empty memory mapped file storage at a given path.

Trait Implementations

impl ResourceStorage for FileResourceStorage

fn subdir(&self, dir: &str) -> Rc<dyn ResourceStorage>

Creates a resource storage at a given subdirectory.

fn exists(&self, resource_name: &str) -> bool

Returns true if resource exists in the storage.

fn read_resource(&self, resource_name: &str) -> Result<&[u8], Error>

Reads a resource in storage and returns a pointer to its raw data.

fn create_output_stream(     &self,     resource_name: &str ) -> Result<Rc<RefCell<dyn Stream>>, Error>

Creates a resource with given name and returns an output stream for writing to it.

fn read(     &self,     resource_name: &str,     schema: &str ) -> Result<&[u8], ResourceStorageError>

Open a flatdata resource with given name and schema for reading.

fn write(&self, resource_name: &str, schema: &str, data: &[u8]) -> Result<()>

Writes data of a flatdata resource with given name and schema to storage.

fn read_and_check_schema(     &self,     resource_name: &str,     expected_schema: &str ) -> Result<&[u8], ResourceStorageError>

Implementation helper for [read].

impl Debug for FileResourceStorage

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.