Trait IndexKindProvider 

pub trait IndexKindProvider: Send + Sync {
    // Required methods
    fn kind(&self) -> IndexKind;
    fn build(
        &self,
        source: &RecordBatch,
        options: &str,
    ) -> Result<Box<dyn IndexBuild>, FnError>;
    fn open(&self, persisted: &[u8]) -> Result<Box<dyn IndexHandle>, FnError>;
}

An index-kind provider that knows how to build / open / probe / persist a custom index.

Required Methods

fn kind(&self) -> IndexKind

The index kind this provider implements.

fn build( &self, source: &RecordBatch, options: &str, ) -> Result<Box<dyn IndexBuild>, FnError>

Build a new index from a source record batch.

options is free-form JSON configuration.

Errors

Returns FnError on build failure (out of memory, bad configuration).

fn open(&self, persisted: &[u8]) -> Result<Box<dyn IndexHandle>, FnError>

Open an index from previously-persisted bytes.

Errors

Returns FnError if the bytes are malformed or incompatible.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors