public abstract class ODataJPAServiceFactory extends ODataServiceFactory
Extend this factory class and create own instance of ODataService
that
transforms Java Persistence
Models into an OData Service. The factory class instantiates instances of
type EdmProvider
and
ODataSingleProcessor
. The OData
JPA Processor library provides a default implementation for EdmProvider and
OData Single Processor.
The factory implementation is passed as servlet init parameter to a JAX-RS
runtime which will instantiate a ODataService
implementation using this factory.
Mandatory: Implement the abstract method initializeODataJPAContext. Fill
ODataJPAContext
with context
values.
<servlet>
<servlet-name>ReferenceScenarioServlet</servlet-name>
<servlet-class>org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet</servlet-class>
<init-param>
<param-name>javax.ws.rs.Application</param-name>
<param-value>org.apache.olingo.odata2.core.rest.ODataApplication</param-value>
</init-param>
<init-param>
<param-name>org.apache.olingo.odata2.processor.factory</param-name>
<param-value>foo.bar.sample.processor.SampleProcessorFactory</param-value>
</init-param>
<init-param>
<param-name>org.apache.olingo.odata2.path.split</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
FACTORY_CLASSLOADER_LABEL, FACTORY_LABEL, PATH_SPLIT_LABEL
Constructor and Description |
---|
ODataJPAServiceFactory() |
Modifier and Type | Method and Description |
---|---|
ODataService |
createService(ODataContext ctx)
Creates an OData Service based on the values set in
ODataJPAContext and
ODataContext . |
ODataJPAContext |
getODataJPAContext() |
abstract ODataJPAContext |
initializeODataJPAContext()
Implement this method and initialize OData JPA Context.
|
createODataSingleProcessorService, getCallback
public final ODataService createService(ODataContext ctx) throws ODataException
ODataJPAContext
and
ODataContext
.createService
in class ODataServiceFactory
ctx
- OData context objectODataException
- in case of errorpublic abstract ODataJPAContext initializeODataJPAContext() throws ODataJPARuntimeException
EntityManagerFactory
into the context. An exception of type
ODataJPARuntimeException
is thrown if
EntityManagerFactory is not initialized.
public class JPAReferenceServiceFactory extends ODataJPAServiceFactory{
private static final String PUNIT_NAME = "punit";
public ODataJPAContext initializeODataJPAContext() {
ODataJPAContext oDataJPAContext = this.getODataJPAContext();
EntityManagerFactory emf = Persistence.createEntityManagerFactory(PUNIT_NAME);
oDataJPAContext.setEntityManagerFactory(emf);
oDataJPAContext.setPersistenceUnitName(PUNIT_NAME);
return oDataJPAContext;
}
}
ODataJPAContext
ODataJPARuntimeException
public final ODataJPAContext getODataJPAContext() throws ODataJPARuntimeException
ODataJPAContext
ODataJPARuntimeException
Copyright © 2013 The Apache Software Foundation. All Rights Reserved.