Elasticsearch Object Mapping and Repositories

In Spring Data Elasticsearch, documents are Java objects mapped to JSON structures in Elasticsearch indexes. These objects represent data entities and are annotated with metadata for indexing and querying. Spring Data Elasticsearch simplifies document management, enabling seamless interaction between Java objects and Elasticsearch’s powerful indexing and search capabilities.

Documents

Let’s look at the same example of the Book and Author POJOs, which reference the book and author database documents and convert them into Elasticsearch document classes.

The Book document

Let’s learn a few handy annotations to transform a POJO into an Elasticsearch document. The most common annotations are @Document and @Id:

• The @Document annotation allows us to map a POJO to a database document via the underlying data access layer.

• The @Id annotation allows us to map a property to an ...