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Difference between revisions of "EclipseLink/Examples/JPA/StoredProcedures"
< EclipseLink | Examples | JPA
(→Oracle stored procedure using OUT CURSOR) |
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=== Oracle stored procedure using OUT CURSOR === | === Oracle stored procedure using OUT CURSOR === | ||
<source lang="sql"> | <source lang="sql"> | ||
| − | CREATE PROCEDURE EMP_READ_ALL | + | CREATE PROCEDURE EMP_READ_ALL ( |
| + | RESULT_CURSOR OUT CURSOR_TYPE.ANY_CURSOR) AS | ||
| + | BEGIN | ||
| + | OPEN RESULT_CURSOR FOR Select e.*, s.* from EMPLOYEE e, SALARY s WHERE e.EMP_ID = s.EMP_ID; | ||
| + | END; | ||
</source> | </source> | ||
Revision as of 11:43, 1 February 2011
EclipseLink has extended support for stored procedure execution including:
- IN, OUT and INOUT parameter support
- CURSOR output parameter support
- Result set support
- Annotation support using @NamedStoredProcedureQuery
- Dynamic definition support using StoreProcedureCall
- Stored function support using StoredFunctionCall
- Object-relational data-types, Struct, Array (OBJECT types, VARRAY), including mapping using ObjectRelationalDataTypeDescriptor
- PLSQL types, BOOLEAN, RECORD, TABLE, using PLSQLStoredProcedureCall
A stored procedure call be used in any query to read objects, or read or modify raw data.
Any CRUD or mapping operation can also be overridden using a stored procedure call using a DescriptorCustomizer and the DescriptorQueryManager API.
See,
Contents
Oracle stored procedure using OUT CURSOR
CREATE PROCEDURE EMP_READ_ALL ( RESULT_CURSOR OUT CURSOR_TYPE.ANY_CURSOR) AS BEGIN OPEN RESULT_CURSOR FOR SELECT e.*, s.* FROM EMPLOYEE e, SALARY s WHERE e.EMP_ID = s.EMP_ID; END;
Using JpaEntityManager createQuery() API to execute a stored procedure
import javax.persistence.Query; import org.eclipse.persistence.queries.StoredProcedureCall; import org.eclipse.persistence.queries.ReadAllQuery; ReadAllQuery databaseQuery = new ReadAllQuery(Employee.class); StoredProcedureCall call = new StoredProcedureCall(); call.setProcedureName("EMP_READ_ALL"); call.useNamedCursorOutputAsResultSet("RESULT_SET"); databaseQuery.setCall(call); Query query = ((JpaEntityManager)entityManager.getDelegate()).createQuery(databaseQuery); List<Employee> result = query.getResultList();
Using @NamedStoredProcedureQuery to define a stored procedure
@NamedStoredProcedureQuery(name="findAllEmployees", procedureName="EMP_READ_ALL", resultClass=Employee.class, parameters={ @StoredProcedureParameter(queryParameter="result", name="RESULT_SET", direction=Direction.OUT_CURSOR}) @Entity public class Employee { ... }
Using named query
Query query = entityManager.createNamedQuery("findAllEmployees"); List<Employee> result = query.getResultList();