cucumber.runtime.java.DefaultJavaObjectFactory Maven / Gradle / Ivy
package cucumber.runtime.java;
import cucumber.runtime.CucumberException;
import java.lang.reflect.Constructor;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
class DefaultJavaObjectFactory implements ObjectFactory {
private final Set> classes = new HashSet>();
private final Map, Object> instances = new HashMap, Object>();
public void start() {
// No-op
}
public void stop() {
instances.clear();
}
public void addClass(Class clazz) {
classes.add(clazz);
}
public T getInstance(Class type) {
T instance = (T) instances.get(type);
if (instance == null) {
instance = cacheNewInstance(type);
}
return instance;
}
private T cacheNewInstance(Class type) {
try {
Constructor constructor = type.getConstructor();
T instance = constructor.newInstance();
instances.put(type, instance);
return instance;
} catch (NoSuchMethodException e) {
throw new CucumberException(String.format("%s doesn't have an empty constructor. If you need DI, put cucumber-picocontainer on the classpath", type), e);
} catch (Exception e) {
throw new CucumberException(String.format("Failed to instantiate %s", type), e);
}
}
}