services in osgi using bundle activator

osgi2

Bundle-Name: Policy Service A
Bundle-Description: policy service for Insurer A
Bundle-Version: 1.0.0
Bundle-Activator: com.x.policy.Activator
Import-Package: org.osgi.framework
Export-Package: com.x.policy.service

========================================

package com.x.policy.service;

public interface PolicyService {

	public boolean verifyPolicy(String policyNumber);
	
}

======================================================

package com.x.policy.service.impl;

import java.util.Arrays;

import com.x.policy.service.PolicyService;

public class PolicyServiceImpl implements PolicyService {

	public String[] policies = {"1234", "1212", "3434"};
	
	public boolean verifyPolicy(String policyNumber) {
		return Arrays.asList(policies).contains(policyNumber);
	}

}
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package com.x.policy;

import java.util.Dictionary;
import java.util.Hashtable;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;

import com.x.policy.service.PolicyService;
import com.x.policy.service.impl.PolicyServiceImpl;


public class Activator implements BundleActivator {

	public void start(BundleContext context) throws Exception {
		System.out.println("Policy service A start");
		Dictionary<String, String> props = new Hashtable<String, String>();
		props.put("Insurer", "A");
		context.registerService(PolicyService.class.getName(), new PolicyServiceImpl(), props);

	}

	public void stop(BundleContext context) throws Exception {
		System.out.println("Policy service A stop");
		
	}

}