Struct CsvImportPolicy 

pub struct CsvImportPolicy { /* private fields */ }

The directory LOAD CSV may read from, and its per-file limits.

Without a policy, LOAD CSV is refused. With one, the canonical path of every source, after resolving .. components and symbolic links, must be a regular file inside the canonical import root.

Implementations

impl CsvImportPolicy

pub fn new(root: impl Into<PathBuf>, limits: CsvImportLimits) -> Self

pub fn root(&self) -> &Path

pub fn limits(&self) -> CsvImportLimits

pub fn resolve(&self, location: &str) -> Result<PathBuf>

Resolves location to a canonical file path inside the import root.

Errors that depend only on the statement are Semantic: a malformed or non-local location and a location outside the import directory (after resolving symbolic links, or lexically when the target does not exist). Filesystem conditions observed at run time are Execution: an import root or source that cannot be accessed.

pub fn open( &self, source: &LoadCsvSource, parameters: &BTreeMap<String, Value>, ) -> Result<CsvRows<File>>

Opens source for streaming after resolving and validating its location.

The source must be a regular file before it is opened: opening a FIFO or device could block or never end. The opened handle is checked again for a file replaced between the two system calls.

Trait Implementations

impl Clone for CsvImportPolicy

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CsvImportPolicy

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

Formats the value using the given formatter.

impl Eq for CsvImportPolicy

impl PartialEq for CsvImportPolicy

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CsvImportPolicy