/*******************************************************************************
* Copyright (c) 2011, 2013 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
*
******************************************************************************/
package org.eclipse.persistence.jpa.rs.resources.common;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URI;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.core.UriInfo;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import javax.xml.transform.stream.StreamSource;
import org.eclipse.persistence.internal.helper.ConversionManager;
import org.eclipse.persistence.internal.jpa.rs.metadata.model.Link;
import org.eclipse.persistence.internal.jpa.rs.metadata.model.Parameter;
import org.eclipse.persistence.internal.jpa.rs.metadata.model.SessionBeanCall;
import org.eclipse.persistence.jaxb.JAXBContext;
import org.eclipse.persistence.jaxb.JAXBContextFactory;
import org.eclipse.persistence.jaxb.UnmarshallerProperties;
import org.eclipse.persistence.jpa.rs.PersistenceContext;
import org.eclipse.persistence.jpa.rs.util.JPARSLogger;
import org.eclipse.persistence.jpa.rs.util.StreamingOutputMarshaller;
import org.eclipse.persistence.jpa.rs.util.list.LinkList;
/**
* @author gonural
*
*/
public abstract class AbstractPersistenceResource extends AbstractResource {
protected Response getContexts(String version, HttpHeaders hh, URI baseURI) throws JAXBException {
if (!isValidVersion(version)) {
JPARSLogger.fine("unsupported_service_version_in_the_request", new Object[] { version });
return Response.status(Status.BAD_REQUEST).type(StreamingOutputMarshaller.getResponseMediaType(hh)).build();
}
Set<String> contexts = getPersistenceFactory().getPersistenceContextNames();
Iterator<String> contextIterator = contexts.iterator();
List<Link> links = new ArrayList<Link>();
String mediaType = StreamingOutputMarshaller.mediaType(hh.getAcceptableMediaTypes()).toString();
while (contextIterator.hasNext()) {
String context = contextIterator.next();
if (version != null) {
links.add(new Link(context, mediaType, baseURI + version + "/" + context + "/metadata"));
} else {
links.add(new Link(context, mediaType, baseURI + context + "/metadata"));
}
}
LinkList linkList = new LinkList();
linkList.setList(links);
String result = null;
if (mediaType.equals(MediaType.APPLICATION_JSON)) {
result = marshallMetadata(linkList.getList(), mediaType);
} else {
result = marshallMetadata(linkList, mediaType);
}
return Response.ok(new StreamingOutputMarshaller(null, result, hh.getAcceptableMediaTypes())).build();
}
@SuppressWarnings("rawtypes")
protected Response callSessionBeanInternal(String version, HttpHeaders hh, UriInfo ui, InputStream is) throws JAXBException, ClassNotFoundException, NamingException, NoSuchMethodException,
InvocationTargetException, IllegalAccessException {
if (!isValidVersion(version)) {
JPARSLogger.fine("unsupported_service_version_in_the_request", new Object[] { version });
return Response.status(Status.BAD_REQUEST).type(StreamingOutputMarshaller.getResponseMediaType(hh)).build();
}
SessionBeanCall call = null;
call = unmarshallSessionBeanCall(is);
String jndiName = call.getJndiName();
javax.naming.Context ctx = new InitialContext();
Object ans = ctx.lookup(jndiName);
if (ans == null) {
JPARSLogger.fine("jpars_could_not_find_session_bean", new Object[] { jndiName });
return Response.status(Status.NOT_FOUND).type(StreamingOutputMarshaller.getResponseMediaType(hh)).build();
}
PersistenceContext context = null;
if (call.getContext() != null) {
context = getPersistenceFactory().get(call.getContext(), ui.getBaseUri(), version, null);
if (context == null) {
JPARSLogger.fine("jpars_could_not_find_persistence_context", new Object[] { call.getContext() });
return Response.status(Status.NOT_FOUND).type(StreamingOutputMarshaller.getResponseMediaType(hh)).build();
}
}
Class[] parameters = new Class[call.getParameters().size()];
Object[] args = new Object[call.getParameters().size()];
int i = 0;
for (Parameter param : call.getParameters()) {
Class parameterClass = null;
Object parameterValue = null;
if (context != null) {
parameterClass = context.getClass(param.getTypeName());
}
if (parameterClass != null) {
parameterValue = context.unmarshalEntity(param.getTypeName(), hh.getMediaType(), is);
} else {
parameterClass = Thread.currentThread().getContextClassLoader().loadClass(param.getTypeName());
parameterValue = ConversionManager.getDefaultManager().convertObject(param.getValue(), parameterClass);
}
parameters[i] = parameterClass;
args[i] = parameterValue;
i++;
}
Method method = ans.getClass().getMethod(call.getMethodName(), parameters);
Object returnValue = method.invoke(ans, args);
return Response.ok(new StreamingOutputMarshaller(null, returnValue, hh.getAcceptableMediaTypes())).build();
}
protected SessionBeanCall unmarshallSessionBeanCall(InputStream data) throws JAXBException {
Class<?>[] jaxbClasses = new Class[] { SessionBeanCall.class };
JAXBContext context = (JAXBContext) JAXBContextFactory.createContext(jaxbClasses, null);
Unmarshaller unmarshaller = context.createUnmarshaller();
unmarshaller.setProperty(UnmarshallerProperties.JSON_INCLUDE_ROOT, Boolean.FALSE);
unmarshaller.setProperty(UnmarshallerProperties.MEDIA_TYPE, MediaType.APPLICATION_JSON);
StreamSource ss = new StreamSource(data);
return unmarshaller.unmarshal(ss, SessionBeanCall.class).getValue();
}
}