将 Morphia 与 Spring 结合使用

发布于 2024-10-23 20:11:05 字数 2126 浏览 2 评论 0原文

Morphia 的 Google Code 网站表示它“与 Guice、Spring 和其他 DI 框架配合得很好。”

我目前正在学习 Spring，所以我只是尝试连接这两个工具。我创建了一个 User POJO 来在 MongoDB 中使用 Morphia 存储用户对象。我还创建了一个从 Morphia 扩展 BasicDAO 的 UserDAO 类来访问对象。

我的 Spring 应用程序上下文配置 XML 如下所示：

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"
           xmlns:aop="http://www.springframework.org/schema/aop">

      <bean class="java.lang.String" id="mongoDb">
        <constructor-arg value="test"/>
      </bean>

      <bean class="com.google.code.morphia.Morphia" id="morphia" />
      <bean class="com.mongodb.Mongo" id="mongo"/>
      <bean class="hu.inagy.testspring.daos.UserDAO" id="userDao">
        <constructor-arg ref="morphia" index="0" />
        <constructor-arg ref="mongo" index="1" />
        <constructor-arg ref="mongoDb" index="2" />
      </bean>

    </beans>

我有一个简单的主类来测试功能：

  public class App 
  {
      public static void main( String[] args )
      {
          ApplicationContext applicationContext = new ClassPathXmlApplicationContext("/app-context.xml");
          UserDAO userDao = (UserDAO) applicationContext.getBean("userDao");

          userDao.deleteByQuery(userDao.createQuery());

          User user = new User();
          user.setName("Test");
          userDao.save(user);

          User ret = userDao.find().get();
          System.out.println("Saved user is: "+ret);
      }
  }

这工作正常，但我不知道我是否按照应有的方式做了所有事情。例如，我还没有在数据存储上调用 ensureIndexes() 和 ensureCaps() 。我的代码也没有对 Morphia 对象上的 POJO 进行显式映射调用。

这些是自动为我完成的还是我应该做其他事情来正确地将 Morphia 与 Spring 一起使用？

原文

The Google Code site of Morphia says it "works great with Guice, Spring, and other DI frameworks."

I'm learning Spring at the moment, so i'm just experimenting with connecting these two tools.
I've created a User POJO to store user objects with Morphia in MongoDB. I've also created a UserDAO class extending BasicDAO from Morphia to access objects.

My Spring application context configuration XML looks like this:

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"
           xmlns:aop="http://www.springframework.org/schema/aop">

      <bean class="java.lang.String" id="mongoDb">
        <constructor-arg value="test"/>
      </bean>

      <bean class="com.google.code.morphia.Morphia" id="morphia" />
      <bean class="com.mongodb.Mongo" id="mongo"/>
      <bean class="hu.inagy.testspring.daos.UserDAO" id="userDao">
        <constructor-arg ref="morphia" index="0" />
        <constructor-arg ref="mongo" index="1" />
        <constructor-arg ref="mongoDb" index="2" />
      </bean>

    </beans>

I have a simple main class to test functionality:

  public class App 
  {
      public static void main( String[] args )
      {
          ApplicationContext applicationContext = new ClassPathXmlApplicationContext("/app-context.xml");
          UserDAO userDao = (UserDAO) applicationContext.getBean("userDao");

          userDao.deleteByQuery(userDao.createQuery());

          User user = new User();
          user.setName("Test");
          userDao.save(user);

          User ret = userDao.find().get();
          System.out.println("Saved user is: "+ret);
      }
  }

This works fine, however i don't know if i did everything as it should be. For example i haven't called ensureIndexes() and ensureCaps() on the datastore. My code also doesn't have an explicit mapping call for the POJOs on the Morphia object.

Are these done for me automatically or should i do other things to use Morphia correctly with Spring?

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