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RecordReader

salamander

Trait RecordReader 

Source 
pub trait RecordReader {
    // Required methods
    fn next(&mut self) -> Result<Option<StoredRecord<'_>>>;
    fn continuation(&self) -> u64;

    // Provided method
    fn next_owned(&mut self) -> Result<Option<OwnedStoredRecord>> { ... }
}
Expand description

The object-safe pull interface over any record reader. next lends a record borrowing the reader’s internal buffer; callers that need to hold records across calls use next_owned.

Required Methods§

Source

fn next(&mut self) -> Result<Option<StoredRecord<'_>>>

Yields the next matching record, borrowing the reader’s internal buffer, or None at the end of the plan.

Source

fn continuation(&self) -> u64

The resumable continuation: the first position this reader has not yet yielded or skipped past. Feeding it back as from in a new plan resumes without gaps or duplicates.

Provided Methods§

Source

fn next_owned(&mut self) -> Result<Option<OwnedStoredRecord>>

Like next but returns an owned record, copying the payload out of the buffer so it can be held across calls.

Dyn Compatibility§

This trait is dyn compatible.

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

Implementors§