PageRequestof0

PageRequestof0 is a commonly referenced term within the context of the Spring Data framework, particularly among developers working with relational databases and pagination in Java applications. It refers to the creation of a PageRequest object using the static factory method PageRequest.of(0, pageSize) or PageRequest.of(0, pageSize, sort). The first argument, 0, designates the first page (zero‑based indexing is employed throughout Spring Data), thereby enabling retrieval of the initial set of records from a query.

The PageRequest class implements the Pageable interface, which supplies information for paging such as the page number, page size, and sorting criteria. By passing 0 as the page number, developers guarantee that the returned Page object contains the very first results of a queried dataset. This approach is prevalent when initializing paginated views or when resetting a paginated component back to its starting point.

Typical code examples include:

Pageable firstPage = PageRequest.of(0, 20);

Page<User> users = userRepository.findAll(firstPage);

Here, the repository method findAll(Pageable pageable) returns a Page<User> containing at most 20 User entities from the beginning of the ordered dataset.

The PageRequest.of method is overloaded to accept sorting parameters, allowing explicit ordering alongside paging. For instance, PageRequest.of(0, 30, Sort.by(Sort.Direction.DESC, "createdDate")) sets the first page to 30 items sorted by creation date descending. This utility is integral to Spring Data’s pagination feature set, which supports eager or lazy loading, efficient offset-based queries, and integration with client‑side pagination controls.