hellobean.java

本套光盘提供了本书各章实例的所需的部分源程序文件以及数据库文件。读者 需要使用JDK 1.4(必需）版

package ejb.hello;
import javax.ejb.*;
import java.util.*;
import java.rmi.*;

public class HelloBean implements SessionBean {
static final boolean verbose = true;
private transient SessionContext ctx;

// Implement the methods in the SessionBean interface
public void ejbActivate() {
if (verbose)
System.out.println("ejbActivate called");
}
public void ejbRemove() {
if(verbose) System.out.println("ejbRemove called");
}

public void ejbPassivate() {
if (verbose)
System.out.println("ejbPassivate called");
}

/** Sets the session context. @param SessionContext */
public void setSessionContext(SessionContext ctx) { 
if (verbose)
System.out.println("setSessionContext called");
this.ctx = ctx;
}
/**
* This method corresponds to the create method in the home interface HelloHome.java. The parameter sets of the two methods are identical. When the client calls HelloHome.create()， the container allocates an instance of the EJBean and calls ejbCreate(). 
*/ 
public void ejbCreate () {
if (verbose)
System.out.println("ejbCreate called");
}
/** HERE IS THE BUSINESS LOGIC the getHello just return a "Hello World" string.*/
public String getHello()
throws RemoteException
{
return("Hello World");
}
}