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package org.glassfish.jersey.server.model.internal;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Type;
import java.util.List;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.Response;
import javax.inject.Inject;
import org.glassfish.jersey.server.ContainerRequest;
import org.glassfish.jersey.server.internal.inject.ConfiguredValidator;
import org.glassfish.jersey.server.model.Invocable;
import org.glassfish.jersey.server.spi.internal.ParamValueFactoryWithSource;
import org.glassfish.jersey.server.spi.internal.ParameterValueHelper;
import org.glassfish.jersey.server.spi.internal.ResourceMethodDispatcher;
import org.glassfish.hk2.api.ServiceLocator;
/**
* An implementation of {@link ResourceMethodDispatcher.Provider} that
* creates instances of {@link ResourceMethodDispatcher}.
*
* @author Paul Sandoz
* @author Marek Potociar (marek.potociar at oracle.com)
*/
class JavaResourceMethodDispatcherProvider implements ResourceMethodDispatcher.Provider {
@Inject
private ServiceLocator serviceLocator;
@Override
public ResourceMethodDispatcher create(final Invocable resourceMethod,
final InvocationHandler invocationHandler,
final ConfiguredValidator validator) {
final List> valueProviders =
ParameterValueHelper.createValueProviders(serviceLocator, resourceMethod);
final Class returnType = resourceMethod.getHandlingMethod().getReturnType();
ResourceMethodDispatcher resourceMethodDispatcher;
if (Response.class.isAssignableFrom(returnType)) {
resourceMethodDispatcher =
new ResponseOutInvoker(resourceMethod, invocationHandler, valueProviders, validator);
} else if (returnType != void.class) {
if (returnType == Object.class || GenericEntity.class.isAssignableFrom(returnType)) {
resourceMethodDispatcher =
new ObjectOutInvoker(resourceMethod, invocationHandler, valueProviders, validator);
} else {
resourceMethodDispatcher =
new TypeOutInvoker(resourceMethod, invocationHandler, valueProviders, validator);
}
} else {
resourceMethodDispatcher
= new VoidOutInvoker(resourceMethod, invocationHandler, valueProviders, validator);
}
// Inject validator.
serviceLocator.inject(resourceMethodDispatcher);
return resourceMethodDispatcher;
}
/**
* Get the application-configured HK2 service locator.
*
* @return application-configured HK2 service locator.
*/
final ServiceLocator getServiceLocator() {
return serviceLocator;
}
private abstract static class AbstractMethodParamInvoker extends AbstractJavaResourceMethodDispatcher {
private final List> valueProviders;
public AbstractMethodParamInvoker(
final Invocable resourceMethod,
final InvocationHandler handler,
final List> valueProviders,
final ConfiguredValidator validator) {
super(resourceMethod, handler, validator);
this.valueProviders = valueProviders;
}
final Object[] getParamValues() {
return ParameterValueHelper.getParameterValues(valueProviders);
}
}
private static final class VoidOutInvoker extends AbstractMethodParamInvoker {
public VoidOutInvoker(
final Invocable resourceMethod,
final InvocationHandler handler,
final List> valueProviders,
final ConfiguredValidator validator) {
super(resourceMethod, handler, valueProviders, validator);
}
@Override
protected Response doDispatch(final Object resource, final ContainerRequest containerRequest) throws ProcessingException {
invoke(containerRequest, resource, getParamValues());
return Response.noContent().build();
}
}
private static final class ResponseOutInvoker extends AbstractMethodParamInvoker {
public ResponseOutInvoker(
final Invocable resourceMethod,
final InvocationHandler handler,
final List> valueProviders,
final ConfiguredValidator validator) {
super(resourceMethod, handler, valueProviders, validator);
}
@Override
protected Response doDispatch(Object resource, final ContainerRequest containerRequest) throws ProcessingException {
return Response.class.cast(invoke(containerRequest, resource, getParamValues()));
}
}
private static final class ObjectOutInvoker extends AbstractMethodParamInvoker {
public ObjectOutInvoker(
final Invocable resourceMethod,
final InvocationHandler handler,
final List> valueProviders,
final ConfiguredValidator validator) {
super(resourceMethod, handler, valueProviders, validator);
}
@Override
protected Response doDispatch(final Object resource, final ContainerRequest containerRequest) throws ProcessingException {
final Object o = invoke(containerRequest, resource, getParamValues());
if (o instanceof Response) {
return Response.class.cast(o);
// } else if (o instanceof JResponse) {
// context.getResponseContext().setResponse(((JResponse)o).toResponse());
} else if (o != null) {
return Response.ok().entity(o).build();
} else {
return Response.noContent().build();
}
}
}
private static final class TypeOutInvoker extends AbstractMethodParamInvoker {
private final Type t;
public TypeOutInvoker(
final Invocable resourceMethod,
final InvocationHandler handler,
final List> valueProviders,
final ConfiguredValidator validator) {
super(resourceMethod, handler, valueProviders, validator);
this.t = resourceMethod.getHandlingMethod().getGenericReturnType();
}
@Override
protected Response doDispatch(final Object resource, final ContainerRequest containerRequest) throws ProcessingException {
final Object o = invoke(containerRequest, resource, getParamValues());
if (o != null) {
Response response = Response.ok().entity(o).build();
// TODO set the method return Java type to the proper context.
// Response r = new ResponseBuilderImpl().
// entityWithType(o, t).status(200).build();
return response;
} else {
return Response.noContent().build();
}
}
}
}