Hibernate Search 6 Example

Simple Spring Boot application demonstrating Hibernate Search 6 usage with Elasticsearch.

Hibernate Search 6.1.7.Final: Reference Documentation

Example app

ER diagram:

Full text search is available for Freelancer and Project entities.

Indexing Entities

• Project
• Freelancer
  • Freelancer categories

3 search examples:

• searchProjectsEntities demonstrates basic full text search of projects by

  • project name

• searchProjects demonstrates previous example with projections usage

• searchFreelancers demonstrates full text search of freelancers (with projections) by

  • username
  • first name
  • last name
  • categories (M:N relationship)

Creating custom edgeNgram analyser

Running

Before running Spring Boot application start necessary Docker containers with the following commands:

• Start development environment with: docker compose -f deployment/docker-compose-dev.yaml up -d

• Stop development environment with: docker compose -f deployment/docker-compose-dev.yaml down

Run tests with the following command:

newman run ./backend/src/test/postman/Hibernate-search-6-example.postman_collection.json -e ./backend/src/test/postman/Test\ Environment.postman_environment.json --reporters cli,json --reporter-json-export ./backend/src/test/postman/output/outputfile.json

Import postman collection from here

Elasticsearch browser extension: https://elasticvue.com/

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Extras

• Paginated fetching of child entities over parent entity at unidirectional OneToMany relationship
  • CREDITS
• Mapping only required fields with MapStruct by defining multiple mappers for sam entity
• Don't pass entities outside @Transactional method, return DTO instead.
  • CREDITS
• Avoiding the N+1 SELECT problem using @EntityGraph
  • CREDITS
• Mapstruct ignoring child bean fields
  • CREDITS