package io.dropwizard.jersey.guava;
import com.google.common.base.Optional;
import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.jersey.internal.util.ReflectionHelper;
import org.glassfish.jersey.internal.util.collection.ClassTypePair;
import org.glassfish.jersey.server.internal.inject.AbstractValueFactoryProvider;
import org.glassfish.jersey.server.internal.inject.MultivaluedParameterExtractor;
import org.glassfish.jersey.server.internal.inject.MultivaluedParameterExtractorProvider;
import org.glassfish.jersey.server.model.Parameter;
import javax.inject.Inject;
import javax.inject.Singleton;
import static com.google.common.base.Strings.isNullOrEmpty;
@Singleton
public class OptionalFormParamValueFactoryProvider extends AbstractValueFactoryProvider {
@Inject
protected OptionalFormParamValueFactoryProvider(MultivaluedParameterExtractorProvider mpep, ServiceLocator locator) {
super(mpep, locator, Parameter.Source.FORM);
}
@Override
protected Factory<?> createValueFactory(Parameter parameter) {
if (parameter.getRawType().equals(Optional.class)) {
if (isNullOrEmpty(parameter.getSourceName())) {
return null;
}
final MultivaluedParameterExtractor extractor = get(unpack(parameter));
if (extractor == null) {
return null;
}
return new OptionalFormParamValueFactory(extractor, !parameter.isEncoded());
}
return null;
}
private Parameter unpack(Parameter parameter) {
ClassTypePair typePair = ReflectionHelper.getTypeArgumentAndClass(parameter.getType()).get(0);
return Parameter.create(null, null, parameter.isEncoded(), typePair.rawClass(), typePair.type(), parameter.getAnnotations());
}
}