getByIdid

getByIdid is a name used in software libraries to describe a data retrieval operation that fetches a single entity by its identifier. It is commonly implemented as part of a repository or data access layer, and the function name suggests a lookup by a unique key, typically referred to as an id or idid in the underlying data model.

In practice, getByIdid is implemented as a method that accepts an identifier value and returns the corresponding record from a data store. The exact signature varies by language and framework, but a typical form is to take an id value (string or number) and return the matched object, or a null/undefined value if no match exists. Some implementations may return a promise or use async/await to accommodate asynchronous data sources such as databases or remote APIs.

Return values and behavior are straightforward: a single, uniquely identified entity is returned when a match is found; if no entity matches, the function returns a null value or throws an error depending on the design. It is generally assumed that the identifier field is unique and indexed to ensure efficient lookups.

Common considerations include ensuring data integrity of the identifier, handling null or invalid inputs gracefully, and choosing between returning null versus throwing an exception for not-found cases. Variants of getByIdid may include getById, getByIdOrThrow, or getOneById, and they are often discussed in the broader context of repository patterns and data access strategies. See also: repository pattern, data access layer, and getById.