Struct flatdata::FileResourceStorage

pub struct FileResourceStorage { /* fields omitted */ }

Resource storage on disk using memory mapped files.

Methods

impl FileResourceStorage

pub fn new(path: PathBuf) -> Self

Create an empty memory mapped file storage.

Trait Implementations

impl Debug for FileResourceStorage

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

Formats the value using the given formatter.

impl ResourceStorage for FileResourceStorage

fn subdir(&self, dir: &str) -> Rc<RefCell<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(     &mut self,     resource_name: &str ) -> Result<MemoryDescriptor, Error>

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

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

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

fn read(     &mut self,     resource_name: &str,     schema: &str ) -> Result<MemoryDescriptor, ResourceStorageError>

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

fn write(     &mut 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(     &mut self,     resource_name: &str,     expected_schema: &str ) -> Result<MemoryDescriptor, ResourceStorageError>

Implementation helper for [read].