Query and Modify Data

Use the methods and query features supported by the selected provider. The following table identifies the covered categories.

Category	API or Method Form	Usage
Standard operation	BasicRepository and CrudRepository	Supported find/save/insert/update/delete and bulk forms
Lifecycle method	@Insert, @Update, @Save, @Delete	Supported parameter and result types
Query method	@Find, @Query, Query by Method Name	Parameter binding and supported query forms
Result control	Order, limits, pages, supported cursors	Result order and amount of returned data
Default method	Java interface default method	Composition of repository operations
Custom method	Supported declaration/resource accessor	Applicable provider resource contract

Define a Derived and an Annotated Query

For an entity with a persistent name field, these methods demonstrate Query by Method Name and an annotated query. Add them to a repository whose entity type is CustomerDocument.

List<CustomerDocument> findByName(String name);

@Query("WHERE name = ?1")
List<CustomerDocument> findByNameWithQuery(String name);

The example uses java.util.List and jakarta.data.repository.Query. The query form comes from the NoSQL provider example. Use the syntax applicable to the selected provider.

For supported JPA boolean count-exists forms, WebLogic Server binds named or positional parameters and adapts supported numeric counts to boolean.

Order and Page Query Results

Use deterministic ordering for paged queries. This method illustrates a parameter-based NoSQL query with a page request and dynamic ordering.

@Find
Page<CustomerDocument> findByNameWithPage(
        @By("name") String name,
        PageRequest pageRequest,
        Order<CustomerDocument> order);

The method uses jakarta.data.repository.Find, jakarta.data.repository.By, jakarta.data.page.Page, jakarta.data.page.PageRequest, and jakarta.data.Order. It requires a mapped name field.

WebLogic Server provides a set of code examples and sample applications that show several approaches to learning about and working with WebLogic Server. These examples and sample applications are available through a separate WebLogic Server examples installer. See Sample Applications and Code Examples in Understanding Oracle WebLogic Server for instructions on installing and running the examples.

The WebLogic Server Jakarta Data/NoSQL sample provides a simple application example. Use the repository API and provider-specific guidance for features beyond the sample. Retained streams, iterators, cursors, and prepared operations remain tied to the resource configuration generation that created them.