Mongodb-ORM基于Java的ORM框架
mongodb-orm简介
Mongodb ORM是基于java的ORM框架，简化了SDK的使用，使代码变得更清晰、简单。
与Ibatis类似，将查询、执行语句封装在xml中，与代码隔离。简称MQL。
项目中使用
加入mongodb orm的支持包
1. 添加jar包或maven支持
<dependency> <groupId>com.mongodborm</groupId> <artifactId>mongodb-orm</artifactId> <version>0.0.1-RELEASE</version> </dependency>
2. 初始化mongodb templet
spring中初始化
<bean id="mongoTemplet" class="com.mongodb.client.MongoClientTemplet"> <property name="factory"> <bean class="com.mongodb.client.MongoORMFactoryBean"> <property name="dataSource"> <bean class="com.mongodb.client.MongoDataSource"> <property name="nodeList" value="127.0.0.1:27017" /> <property name="dbName" value="your db name" /> <property name="userName" value="user name" /> <property name="passWord" value="password" /> <!-- 可使用默认值 --> <property name="connectionsPerHost" value="" /> <property name="threadsAllowedToBlock" value="" /> <property name="connectionTimeOut" value="" /> <property name="maxRetryTime" value="" /> <property name="socketTimeOut" value="" /> </bean> </property> <property name="configLocations"> <list> <value>classpath:mql/mongo-mql.xml</value> </list> </property> </bean> </property> </bean>
代码初始化
try {
Resource resource = new ClassPathResource("mongo-mql.xml");
MongoORMFactoryBean factory = new MongoORMFactoryBean();
factory.setConfigLocations(new Resource[]{resource});
factory.init();
MongoClientTemplet templet = new MongoClientTemplet();
templet.setFactory(factory);
templet.init();
} catch(Exception e) {
e.printStackTrace();
}
编写MQL
Mapping
<mapping id="model" class="test.mongodborm.Model"> <property column="_id" name="id" /> <property column="name" name="name" /> <property column="time" name="time" value="0" /> <property column="status" name="status" /> </mapping> <mapping id="extendModel" class="test.mongodborm.Model" extends="model"> <property column="newProperty" name="newProperty" /> </mapping>
select
<select id="queryModelList" collection="test_sample">
<query class="java.lang.String">
<property column="name" name="${value}" />
</query>
<field mapping="model" />
<order>
<property column="time" value="desc" />
</order>
</select>
update/findAndModify
<update id="updateModel" collection="test_sample"> <query class="test.mongodborm.Model$Child"> <property column="name" name="name" ignoreNull="true" /> <property column="time" operate="gte" value="0" type="number" /> <property column="status" operate="in"> <list type="number">0,1</list> </property> </query> <action class="java.util.Map"> <property column="name" name="name" operate="set" /> <property column="status" operate="set" /> </action> </update>
有嵌套的查询
<select id="queryModelList3" collection="test_sample">
<query class="java.lang.String">
<property column="_id" value="${value}" />
<property column="time" value="0" type="number" />
</query>
<field class="java.util.Map">
<property column="name" name="name" />
<property column="parent" name="parent">
<value class="test.mongodborm.Model$Parent">
<property column="name" name="name" />
<property column="child" name="child">
<value class="test.mongodborm.Model$Child">
<property column="name" name="name" />
<property column="time" name="time" value="0" />
</value>
</property>
<property column="data" name="data">
<value class="java.util.Map">
<property column="title" name="title" />
<property column="content" name="content" />
</value>
</property>
</value>
</property>
<property column="data" name="data">
<value class="java.util.Map">
<property column="title" name="title" />
<property column="content" name="content" />
</value>
</property>
</field>
<order class="java.util.Map">
<property column="time" name="time" value="desc" />
</order>
</select>
Templet用法
Model model = mongoTemplet.findOne("queryModelList", "yuxiangping");
List<Model> list = mongoTemplet.findOne("queryModelList", "");
Model model = new Model();
model.setTime(1L);
Map<String, String> action = new HashMap<String, String>();
action.put("name", "yuxiangping-update");
int update = mongoT emplet.update("updateModel", model, action);
更多的使用方法参见 sample.xml
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