Could Not autowire an object in Mule component - eclipse

Question

I am trying to autowire an object of a service class in mule flow. The code is:
public class SignatureValidator implements Callable
{
#Autowired
private TriggerHostServiceImpl triggerHostServiceImpl;
#Override
public Object onCall(MuleEventContext eventContext) throws Exception
{
MuleMessage message = eventContext.getMessage();
message = fetchPropertiesAndValidateMessageSignature(message);
return message.getPayload();
}
private MuleMessage fetchPropertiesAndValidateMessageSignature(MuleMessage message) throws GeneralSecurityException, IOException
{
String muleWSTriggerLabel = message.getInboundProperty("triggerLabel");
String muleWSSignature = message.getInboundProperty("signature");
String muleWSExpiresOn = message.getInboundProperty("expiresOn");
String xmlData = message.getInboundProperty("xmlData");
String appHostName = InitConfigurationLoader.getConfigSetting("applicationHostingName");
Trigger triggerJaxbObject = (Trigger) message.getPayload();
String applicationIdentifier = triggerJaxbObject.getApplicationIdentifier();
TriggerMapper triggerMapper = FetchConfigurationEntities.getTriggerMapper(applicationIdentifier, muleWSTriggerLabel);
String reportEmail = FetchConfigurationEntities.getReportEmail(triggerMapper);
ImportDetails importInstance = FetchConfigurationEntities.getImport(triggerMapper);
String importInstanceURL = importInstance.getWebserviceURL();
message.setInvocationProperty("triggerJaxbObject", triggerJaxbObject);
message.setInvocationProperty("importInstance", importInstance);
message.setInvocationProperty("reportEmail", reportEmail);
message.setInvocationProperty("appIdentifier", applicationIdentifier);
message.setInvocationProperty("importHost", importInstanceURL.substring(importInstanceURL.lastIndexOf('/')+1, importInstanceURL.length()));
setPayloadAfterValidation(message, muleWSTriggerLabel, xmlData, muleWSSignature, appHostName, muleWSExpiresOn);
return message;
}
My service class is:
package com.catalystone.csi.service;
import java.util.Map;
import java.util.Map.Entry;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.catalystone.csi.core.cache.UpdateCacheable;
import com.catalystone.csi.dao.TriggerHostDao;
import com.catalystone.csi.model.TriggerHost;
#Service
public class TriggerHostServiceImpl implements TriggerHostService
{
#Autowired
private TriggerHostDao triggerHostDao;
#Autowired
private UpdateCacheable updateCacheable;
/**
* Method to save mule configurations i.e. TriggerHosts
*/
#Override
#Transactional
public boolean saveTriggerHost(TriggerHost triggerHost)
{
if(triggerHostDao.saveTriggerHost(triggerHost))
{
Map<String, TriggerHost> allTriggerHosts = getAllTriggerHosts();
allTriggerHosts.put(triggerHost.getTriggerIdentifier(), triggerHost);
updateCacheable.updateAllTriggerHostCache(allTriggerHosts);
return true;
}
else
return false;
}
/**
* Method to fetch all the configurations
*/
#Override
#Transactional//this annotation is used to maintain transaction
public Map<String, TriggerHost> getAllTriggerHosts()
{
return triggerHostDao.getAllTriggerHosts();
}
/**
* Method to delete mule configuration for triggerHost
* #return - true if delete configuration is successfully done
*/
#Override
#Transactional//this annotation is used to maintain transaction
public Boolean deleteConfiguration(TriggerHost triggerHost, boolean isMultipleImportOccurrence)
{
Boolean isDeleteSuccessful = triggerHostDao.deleteConfiguration(triggerHost, isMultipleImportOccurrence);
//Getting all the configurations from cache
Map<String, TriggerHost> allTriggerHosts = getAllTriggerHosts();
//check if delete configuration successful then remove that configuration from cache
if(isDeleteSuccessful)
{
for(Entry<String, TriggerHost> triggerHostEntry : allTriggerHosts.entrySet())
{
if(triggerHostEntry.getValue().getTriggerIdentifier().equals(triggerHost.getTriggerIdentifier()))
{
allTriggerHosts.remove(triggerHostEntry.getKey());
break;
}
}
//update cache
updateCacheable.updateAllTriggerHostCache(allTriggerHosts);
return true;
}
return false;
}
#Override
#Transactional
public Boolean updateConfiguration(TriggerHost triggerHost)
{
if(triggerHostDao.updateConfiguration(triggerHost))
{
Map<String, TriggerHost> allTriggerHosts = getAllTriggerHosts();
allTriggerHosts.put(triggerHost.getTriggerIdentifier(), triggerHost);
updateCacheable.updateAllTriggerHostCache(allTriggerHosts);
return true;
}
return false;
}
#Override
#Transactional
public Boolean deleteConfiguration(String existingImportIdentifier)
{
return triggerHostDao.deleteConfiguration(existingImportIdentifier);
}
}
when I run this code then value of triggerHostServiceImpl is always null. How to autowire? I have also tried a link Dependency Injection is working at Mule application startup. Objects are getting null, when a request received and Failing by throwing NullEx
and
Spring3 Dependency Injection not working with mule
but then it is giving me so many exception that I couldn't get.

Answer 1

you have to Autowire the Interface not the Implementation
#Autowired
private TriggerHostService triggerHostService;
and add the setter and getter of triggerHostService