package com.opensymphony.xwork2.factory;
import com.opensymphony.xwork2.ObjectFactory;
import com.opensymphony.xwork2.config.ConfigurationException;
import com.opensymphony.xwork2.config.entities.InterceptorConfig;
import com.opensymphony.xwork2.inject.Inject;
import com.opensymphony.xwork2.interceptor.Interceptor;
import com.opensymphony.xwork2.interceptor.WithLazyParams;
import com.opensymphony.xwork2.util.reflection.ReflectionProvider;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.HashMap;
import java.util.Map;
/**
* Default implementation
*/
public class DefaultInterceptorFactory implements InterceptorFactory {
private static final Logger LOG = LogManager.getLogger(DefaultInterceptorFactory.class);
private ObjectFactory objectFactory;
private ReflectionProvider reflectionProvider;
@Inject
public void setObjectFactory(ObjectFactory objectFactory) {
this.objectFactory = objectFactory;
}
@Inject
public void setReflectionProvider(ReflectionProvider reflectionProvider) {
this.reflectionProvider = reflectionProvider;
}
public Interceptor buildInterceptor(InterceptorConfig interceptorConfig, Map<String, String> interceptorRefParams) throws ConfigurationException {
String interceptorClassName = interceptorConfig.getClassName();
Map<String, String> thisInterceptorClassParams = interceptorConfig.getParams();
Map<String, String> params = (thisInterceptorClassParams == null) ? new HashMap<String, String>() : new HashMap<>(thisInterceptorClassParams);
params.putAll(interceptorRefParams);
String message;
Throwable cause;
try {
// interceptor instances are long-lived and used across user sessions, so don't try to pass in any extra context
Object o = objectFactory.buildBean(interceptorClassName, null);
if (o instanceof WithLazyParams) {
LOG.debug("Interceptor {} is marked with interface {} and params will be set during action invocation",
interceptorClassName, WithLazyParams.class.getName());
} else {
reflectionProvider.setProperties(params, o);
}
if (o instanceof Interceptor) {
Interceptor interceptor = (Interceptor) o;
interceptor.init();
return interceptor;
}
throw new ConfigurationException("Class [" + interceptorClassName + "] does not implement Interceptor", interceptorConfig);
} catch (InstantiationException e) {
cause = e;
message = "Unable to instantiate an instance of Interceptor class [" + interceptorClassName + "].";
} catch (IllegalAccessException e) {
cause = e;
message = "IllegalAccessException while attempting to instantiate an instance of Interceptor class [" + interceptorClassName + "].";
} catch (ClassCastException e) {
cause = e;
message = "Class [" + interceptorClassName + "] does not implement com.opensymphony.xwork2.interceptor.Interceptor";
} catch (Exception e) {
cause = e;
message = "Caught Exception while registering Interceptor class " + interceptorClassName;
} catch (NoClassDefFoundError e) {
cause = e;
message = "Could not load class " + interceptorClassName + ". Perhaps it exists but certain dependencies are not available?";
}
throw new ConfigurationException(message, cause, interceptorConfig);
}
}