Admin: 1 версия

2010-06-01T06:50:19Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:45Z

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== Use AroundInvoke To Do Benchmark ==



<source lang="java">

File: EmployeeBean.java
import javax.ejb.Stateful;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
@Stateful
public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {
public EmployeeBean() {
}
public void doAction() {
System.out.println("Processing...");
}
@AroundInvoke
public Object TimerLog(InvocationContext ctx) throws Exception {
String beanClassName = ctx.getClass().getName();
String businessMethodName = ctx.getMethod().getName();
String target = beanClassName + "." + businessMethodName;
long startTime = System.currentTimeMillis();
System.out.println("Invoking " + target);
try {
return ctx.proceed();
} finally {
System.out.println("Exiting " + target);
long totalTime = System.currentTimeMillis() - startTime;
System.out.println("Business method " + businessMethodName + "in " + beanClassName + "takes "
+ totalTime + "ms to execute");
}
}
}

File: EmployeeServiceLocal.java
import javax.ejb.Local;
import javax.ejb.Remote;

@Local
public interface EmployeeServiceLocal{
public void doAction();
}

File: EmployeeServiceRemote.java
import javax.ejb.Remote;
@Remote
public interface EmployeeServiceRemote {
public void doAction();

}

File: Employee.java
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.PostRemove;
@Entity
public class Employee implements java.io.Serializable {
private int id;
private String firstName;
private String lastName;
@Id
@GeneratedValue
public int getId() {
return id;
}

@PostRemove
public void postRemove()
{
System.out.println("@PostRemove");
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String first) {
this.firstName = first;
}
public String getLastName() {
return lastName;
}
public void setLastName(String last) {
this.lastName = last;
}
}

File: Main.java
import javax.ejb.EJB;
import javax.naming.InitialContext;
public class Main {

public static void main(String[] a) throws Exception {
EmployeeServiceRemote service = null;
// Context compEnv = (Context) new InitialContext().lookup("java:comp/env");
// service = (HelloService)new InitialContext().lookup("java:comp/env/ejb/HelloService");
service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeBean/remote");
service.doAction();
}
}

File: jndi.properties
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

</source>

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Java/EJB3/AroundInvoke - История изменений

Admin: 1 версия

в 18:01, 31 мая 2010