BuyerMDB (Student Root 5.1.0-SNAPSHOT API)

java.lang.Object
- ejava.examples.asyncmarket.ejb.BuyerMDB

All Implemented Interfaces:

MessageListener
```
public class BuyerMDB
extends Object
implements MessageListener
```
This class will listen for market events and cause further bidding to occur. Note that this is mostly a technology demonstration and not a great architectural demonstration. It would be best to restrict this class to only the async/JMS interface and move all detailed processing and business logic to lower level classes. Architecturally, MDBs should be restricted to just interface adaption. If you place too much business logic here it becomes harder to test and reuse.

Field Summary

Fields
Modifier and Type	Field	Description
`private AuctionMgmtLocal`	`auctionMgmt`
`private BuyerLocal`	`buyer`
`private MessageDrivenContext`	`ctx`
`private static org.slf4j.Logger`	`logger`
`private OrderDAO`	`orderDAO`

Constructor Summary

Constructors
Constructor Description

BuyerMDB()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`init()`
`void`	`onMessage(Message message)`
`protected void`	`processAuctionItem(long itemId)`
`protected void`	`processOrder(Order order)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

private static final org.slf4j.Logger logger

buyer
```
private BuyerLocal buyer
```

auctionMgmt
```
private AuctionMgmtLocal auctionMgmt
```

orderDAO
```
@Inject
private OrderDAO orderDAO
```

ctx
```
private MessageDrivenContext ctx
```

Constructor Detail
- BuyerMDB
```
public BuyerMDB()
```

Method Detail

init
```
@PostConstruct
public void init()
```

onMessage

@PermitAll
public void onMessage(Message message)

Specified by:: onMessage in interface MessageListener

processAuctionItem

protected void processAuctionItem(long itemId)

processOrder

protected void processOrder(Order order)