Trait datafusion::datasource::object_store::ObjectStore

source · [−]
pub trait ObjectStore: Sync + Send + Debug {
    fn list_file<'life0, 'life1, 'async_trait>(
        &'life0 self, 
        prefix: &'life1 str
    ) -> Pin<Box<dyn Future<Output = Result<FileMetaStream>> + Send + 'async_trait>>
    where
        'life0: 'async_trait,
        'life1: 'async_trait,
        Self: 'async_trait;
    fn list_dir<'life0, 'life1, 'async_trait>(
        &'life0 self, 
        prefix: &'life1 str, 
        delimiter: Option<String>
    ) -> Pin<Box<dyn Future<Output = Result<ListEntryStream>> + Send + 'async_trait>>
    where
        'life0: 'async_trait,
        'life1: 'async_trait,
        Self: 'async_trait;
    fn file_reader(&self, file: SizedFile) -> Result<Arc<dyn ObjectReader>>;

    fn list_file_with_suffix<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 self, 
        prefix: &'life1 str, 
        suffix: &'life2 str
    ) -> Pin<Box<dyn Future<Output = Result<FileMetaStream>> + Send + 'async_trait>>
    where
        'life0: 'async_trait,
        'life1: 'async_trait,
        'life2: 'async_trait,
        Self: 'async_trait,
    { ... }
}
Expand description

A ObjectStore abstracts access to an underlying file/object storage. It maps strings (e.g. URLs, filesystem paths, etc) to sources of bytes

Required Methods

Returns all the files in path prefix

Returns all the files in prefix if the prefix is already a leaf dir, or all paths between the prefix and the first occurrence of the delimiter if it is provided.

Get object reader for one file

Provided Methods

Calls list_file with a suffix filter

Implementors