Source Code : Lookup Demo

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Lookup Demo

/*
Pro Spring
By Rob Harrop
Jan Machacek
ISBN: 1-59059-461-4
Publisher: Apress
*/



///////////////////////////////////////////////////////////////////////////////////////
//File: lookup.xml
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <bean id="helper" class="MyHelper" singleton="false"/>
    <bean id="abstractLookupBean" class="AbstractLookupDemoBean">
        <lookup-method name="getMyHelper" bean="helper"/>
    </bean>
    <bean id="standardLookupBean" class="StandardLookupDemoBean">
        <property name="myHelper">
            <ref local="helper"/>
        </property>
    </bean>
</beans>



///////////////////////////////////////////////////////////////////////////////////////
public interface DemoBean {

    public MyHelper getMyHelper();
    public void someOperation();
}



///////////////////////////////////////////////////////////////////////////////////////

public class MyHelper {

    public void doSomethingHelpful() {
        // do something!
    }
}

///////////////////////////////////////////////////////////////////////////////////////

public class StandardLookupDemoBean implements DemoBean {

    private MyHelper helper;
    
    public void setMyHelper(MyHelper helper) {
        this.helper = helper;
    }
    
    public MyHelper getMyHelper() {
        return this.helper;
    }
    
    public void someOperation() {
        helper.doSomethingHelpful();
    }
}

///////////////////////////////////////////////////////////////////////////////////////

public abstract class AbstractLookupDemoBean implements DemoBean {
    
    public abstract MyHelper getMyHelper();
    
    public void someOperation() {
        getMyHelper().doSomethingHelpful();
    }
}

///////////////////////////////////////////////////////////////////////////////////////
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;
import org.springframework.util.StopWatch;

public class LookupDemo {

    public static void main(String[] args) {
        BeanFactory factory = new XmlBeanFactory(new FileSystemResource(
                "build/lookup.xml"));

        DemoBean abstractBean = (DemoBean) factory.getBean("abstractLookupBean");
        DemoBean standardBean = (DemoBean) factory.getBean("standardLookupBean");

        displayInfo(standardBean);
        displayInfo(abstractBean);

    }

    public static void displayInfo(DemoBean bean) {
        MyHelper helper1 = bean.getMyHelper();
        MyHelper helper2 = bean.getMyHelper();

        System.out.println("Helper Instances the Same?: "
                + (helper1 == helper2));

        StopWatch stopWatch = new StopWatch();
        stopWatch.start("lookupDemo");

        for (int x = 0; x < 100000; x++) {
            MyHelper helper = bean.getMyHelper();
            helper.doSomethingHelpful();
        }

        stopWatch.stop();

        System.out.println("100000 gets took " + stopWatch.getTotalTimeMillis()
                + " ms");

    }
}
           
       

Thank with us