ccae97890f
This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener). # Fixed URLs ## Fixed Success These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended. * [ ] http://www.apache.org/licenses/ with 1 occurrences migrated to: https://www.apache.org/licenses/ ([https](https://www.apache.org/licenses/) result 200). * [ ] http://www.apache.org/licenses/LICENSE-2.0 with 426 occurrences migrated to: https://www.apache.org/licenses/LICENSE-2.0 ([https](https://www.apache.org/licenses/LICENSE-2.0) result 200).
Spring Data JPA - Query-by-Example (QBE) example
This project contains samples of Query-by-Example of Spring Data JPA.
Support for Query-by-Example
Query by Example (QBE) is a user-friendly querying technique with a simple interface. It allows dynamic query creation and does not require to write queries containing field names. In fact, Query by Example does not require to write queries using JPA-QL at all.
An Example takes a data object (usually the entity object or a subtype of it) and a specification how to match properties. You can use Query by Example with JPA Repositories.
public interface PersonRepository extends CrudRepository<Person, String>, QueryByExampleExecutor<Person> {
}
Example<Person> example = Example.of(new Person("Jon", "Snow"));
repo.findAll(example);
ExampleMatcher matcher = ExampleMatcher.matching().
.withMatcher("firstname", endsWith())
.withMatcher("lastname", startsWith().ignoreCase());
Example<Person> example = Example.of(new Person("Jon", "Snow"), matcher);
repo.count(example);
This example contains a test class to illustrate Query-by-Example with a Repository in UserRepositoryIntegrationTests.