用java编写的留言版
源代码在线查看： boardbean.java
package com.bitterjava.bbs.ejb;
import java.rmi.RemoteException;
import java.security.Identity;
import java.util.Properties;
import javax.ejb.*;
/**
* This is an Entity Bean class with CMP fields
*/
public class BoardBean implements EntityBean {
private javax.ejb.EntityContext entityContext = null;
public String name;
private java.util.Vector threads;
private ThreadHome threadHome = null;
final static long serialVersionUID = 3206093459760846163L;
/**
* This method was generated for supporting the associations.
* @return java.util.Vector
*/
/* WARNING: THIS METHOD WILL BE REGENERATED. */
protected java.util.Vector _getLinks() {
java.util.Vector links = new java.util.Vector();
return links;
}
/**
* This method was generated for supporting the associations.
*/
/* WARNING: THIS METHOD WILL BE REGENERATED. */
protected void _initLinks() {}
/**
* This method was generated for supporting the associations.
* @exception java.rmi.RemoteException The exception description.
* @exception javax.ejb.RemoveException The exception description.
*/
/* WARNING: THIS METHOD WILL BE REGENERATED. */
protected void _removeLinks() throws java.rmi.RemoteException, javax.ejb.RemoveException {
java.util.Enumeration links = _getLinks().elements();
while (links.hasMoreElements()) {
try {
((com.ibm.ivj.ejb.associations.interfaces.Link) (links.nextElement())).remove();
}
catch (javax.ejb.FinderException e) {} //Consume Finder error since I am going away
}
}
/**
* Insert the method's description here.
* Creation date: (9/25/2001 1:41:20 PM)
* @param threadName java.lang.String
*/
public int addThread(String threadName) throws RemoteException, CreateException {
int nextID = 0;
for (int i = 0; i < threads.size(); i++) {
Thread thread = resolveThread(i);
int threadID = thread.getThreadID();
nextID = Math.max(nextID, threadID+1);
}
Thread newThread = getThreadHome().create(name, nextID);
newThread.setName(threadName);
threads.addElement(newThread);
return nextID;
}
/**
* ejbActivate method comment
* @exception java.rmi.RemoteException The exception description.
*/
public void ejbActivate() throws java.rmi.RemoteException {
_initLinks();
}
/**
* ejbCreate method for a CMP entity bean
* @param argName java.lang.String
* @exception javax.ejb.CreateException The exception description.
* @exception java.rmi.RemoteException The exception description.
*/
public void ejbCreate(java.lang.String argName) throws javax.ejb.CreateException, java.rmi.RemoteException {
_initLinks();
// All CMP fields should be initialized here.
name = argName;
threads = new java.util.Vector();
}
/**
* ejbLoad method comment
* @exception java.rmi.RemoteException The exception description.
*/
public void ejbLoad() throws java.rmi.RemoteException {
_initLinks();
try {
threads = new java.util.Vector();
java.util.Enumeration e = getThreadHome().findAllForBoard(name);
while (e.hasMoreElements()) {
threads.addElement(e.nextElement());
}
}
catch (FinderException e) {
}
catch (NullPointerException e) {
}
}
/**
* ejbPassivate method comment
* @exception java.rmi.RemoteException The exception description.
*/
public void ejbPassivate() throws java.rmi.RemoteException {}
/**
* ejbPostCreate method for a CMP entity bean
* @param argName java.lang.String
* @exception java.rmi.RemoteException The exception description.
*/
public void ejbPostCreate(java.lang.String argName) throws java.rmi.RemoteException {}
/**
* ejbRemove method comment
* @exception java.rmi.RemoteException The exception description.
* @exception javax.ejb.RemoveException The exception description.
*/
public void ejbRemove() throws java.rmi.RemoteException, javax.ejb.RemoveException {
_removeLinks();
removeAllThreads();
}
/**
* ejbStore method comment
* @exception java.rmi.RemoteException The exception description.
*/
public void ejbStore() throws java.rmi.RemoteException {}
/**
* getEntityContext method comment
* @return javax.ejb.EntityContext
*/
public javax.ejb.EntityContext getEntityContext() {
return entityContext;
}
/**
* Insert the method's description here.
* Creation date: (9/25/2001 1:39:20 PM)
* @return java.lang.String
*/
public String getName() {
return name;
}
/**
* Insert the method's description here.
* Creation date: (9/25/2001 4:54:16 PM)
* @return com.bitterjava.bbs.ejb.Thread
* @param threadID int
* @exception java.rmi.RemoteException The exception description.
*/
public Thread getThread(int threadID) throws java.rmi.RemoteException {
Thread rcThread = null;
for (int i = 0; i < threads.size(); i++) {
Thread thisThread = resolveThread(i);
if (thisThread.getThreadID() == threadID) {
rcThread = thisThread;
break;
}
}
return rcThread;
}
/**
* Insert the method's description here.
* Creation date: (9/25/2001 1:03:26 PM)
* @return com.bitterjava.bbs.ejb.ThreadHome
* @exception java.rmi.RemoteException The exception description.
*/
private ThreadHome getThreadHome() {
if (threadHome == null) {
try {
Properties env = entityContext.getEnvironment();
String providerURL = env.getProperty("providerURL");
String threadHomeName = env.getProperty("threadHomeName");
String ctxFactory = env.getProperty("ctxFactory");
Properties p = new Properties();
p.put("java.naming.provider.url", providerURL);
p.put("java.naming.factory.initial", ctxFactory);
javax.naming.InitialContext ic = new javax.naming.InitialContext(p);
java.lang.Object homeObject = ic.lookup(threadHomeName);
threadHome = (ThreadHome)javax.rmi.PortableRemoteObject.narrow((org.omg.CORBA.Object)homeObject, ThreadHome.class);
}
catch (Exception e) {
}
}
return threadHome;
}
/**
* Insert the method's description here.
* Creation date: (9/25/2001 1:01:26 PM)
* @return java.util.Collection
*/
public java.util.Collection getThreads() {
return threads;
}
/**
* Insert the method's description here.
* Creation date: (9/26/2001 10:26:49 PM)
* @exception java.rmi.RemoteException The exception description.
* @exception javax.ejb.RemoveException The exception description.
*/
public void removeAllThreads() throws java.rmi.RemoteException, javax.ejb.RemoveException {
for (int i = 0; i < threads.size(); i++) {
Thread thisThread = resolveThread(i);
thisThread.remove();
}
threads = new java.util.Vector();
}
/**
* Insert the method's description here.
* Creation date: (9/25/2001 1:48:53 PM)
* @param thread com.bitterjava.bbs.ejb.Thread
*/
public void removeThread(Thread thread) throws RemoteException, RemoveException {
for (int i = 0; i < threads.size(); i++) {
Thread thisThread = resolveThread(i);
if (thisThread.isIdentical(thread)) {
threads.remove(i);
thisThread.remove();
break;
}
}
}
/**
* Insert the method's description here.
* Creation date: (9/27/2001 9:56:47 AM)
* @return com.bitterjava.bbs.ejb.Thread
* @param threadIndex int
*/
private Thread resolveThread(int threadIndex) {
java.lang.Object o = threads.elementAt(threadIndex);
Thread threadEjb = (Thread)javax.rmi.PortableRemoteObject.narrow((org.omg.CORBA.Object)o, Thread.class);
return threadEjb;
}
/**
* setEntityContext method comment
* @param ctx javax.ejb.EntityContext
* @exception java.rmi.RemoteException The exception description.
*/
public void setEntityContext(javax.ejb.EntityContext ctx) throws java.rmi.RemoteException {
entityContext = ctx;
}
/**
* unsetEntityContext method comment
* @exception java.rmi.RemoteException The exception description.
*/
public void unsetEntityContext() throws java.rmi.RemoteException {
entityContext = null;
}
}
