io.cucumber.needle.CollectInjectionProvidersFromStepsInstance Maven / Gradle / Ivy
package io.cucumber.needle;
import de.akquinet.jbosscc.needle.injection.InjectionProvider;
import de.akquinet.jbosscc.needle.reflection.ReflectionUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* Collects {@link InjectionProvider} instances.
*/
enum CollectInjectionProvidersFromStepsInstance {
/**
* stateless Singleton
*/
INSTANCE;
/**
* Logger for the factory.
*/
private final Logger logger = LoggerFactory.getLogger(NeedleFactory.class);
/**
* Collect providers direct in the step definition.
*
* @param instance step definition instance
* @return collected injection providers.
*/
final InjectionProvider[] apply(final T instance) {
final Set> providers = new LinkedHashSet<>();
for (final Field field : ReflectionUtil.getAllFieldsWithAnnotation(instance, NeedleInjectionProvider.class)) {
field.setAccessible(true);
try {
final Object value = field.get(instance);
if (value instanceof InjectionProvider[]) {
providers.addAll(Arrays.asList((InjectionProvider[]) value));
} else if (value instanceof InjectionProvider) {
providers.add((InjectionProvider) value);
} else if (value instanceof InjectionProviderInstancesSupplier) {
providers.addAll(((InjectionProviderInstancesSupplier) value).get());
} else {
throw new IllegalStateException("Fields annotated with NeedleInjectionProviders must be of type "
+ "InjectionProviderInstancesSupplier, InjectionProvider " + "or InjectionProvider[]");
}
} catch (final Exception e) {
throw new IllegalStateException(e);
}
}
if (logger.isTraceEnabled()) {
logger.trace("Adding {} InjectionProvider instances.", providers.size());
}
return providers.toArray(new InjectionProvider[0]);
}
}