4164bc4607
Bumped version number to 2.0. Upgraded to Spring Boot 2.0. Stuff disabled in the meantime: - Cassandra: needs API adaptions in configuration - JPA > Security: test fails with weird Hibernate error - Redis > Reactive: API updates needed - Solr: configration updates necessary adjust versions Updated elastic search to the new version. Fixed the reactor version to Bismuth-BUILD-SNAPSHOT. This probably should be undone when boot references the proper bom.
Spring Data MongoDB - Query-by-Example (QBE) example
This project contains samples of Query-by-Example of Spring Data MongoDB.
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 MongoOperations and Repositories.
public interface PersonRepository extends CrudRepository<Person, String>, QueryByExampleExecutor {
}
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 two test classes to illustrate Query-by-Example with MongoOperations in MongoOperationsIntegrationTests and the usage with a Repository in UserRepositoryIntegrationTests.