拍卖应用的优化与OSGi服务的运用
1. 拍卖应用的持久化配置
在优化拍卖应用时,首先要考虑的是持久化配置。通过定义JPA(Java Persistence API)配置,可以实现拍卖应用的持久化。以下是具体的配置代码:
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="AuctionBookPU">
<class>manning.osgi.auction.auctioneer.AuctionBook</class>
<properties>
<property name="javax.persistence.jdbc.driver"
value="org.apache.derby.jdbc.EmbeddedDriver"/>
<property name="javax.persistence.jdbc.url"