使用案例
我正在尝试使用将自定义行为添加到Spring Data MongoDB的所有存储库功能。
文档无益地描述了如何使用JPA进行连接。无论如何使用Mongo等效的配置设置。
我想将findByCategoryName（String categoryName）方法添加到所有实体，因为我的所有实体都有一个Category。 Category是DBRef对象，因此必须使用自定义查询。
以下是配置的相关部分
<!-- Activate Spring Data MongoDB repository support -->
<mongo:repositories base-package="com.domain.*.repo" repository-impl-postfix="CustomImpl"
factory-class="com.domain.commonrepo.CommonMongoRepoFactoryBean"/>
<bean id="mappingContext" class="org.springframework.data.mongodb.core.mapping.MongoMappingContext" />
<mongo:mapping-converter mapping-context-ref="mappingContext">
<mongo:custom-converters base-package="com.domain.mongo.converter" />
</mongo:mapping-converter>
<bean id="entityInformationCreator" class="org.springframework.data.mongodb.repository.support.DefaultEntityInformationCreator">
<constructor-arg name="mappingContext" ref="mappingContext" />
</bean>
。
FactoryBean
@NoRepositoryBean
public class CommonMongoRepoFactoryBean<T extends MongoRepository<?,?>, ID extends
Serializable> extends MongoRepositoryFactoryBean{
@Autowired
private static MongoTemplate mongoTemplate;
protected MongoRepositoryFactory getRepositoryFactory(Class<T> clazz) {
return new CommonMongoRepoFactory(clazz);
}
private static class CommonMongoRepoFactory extends MongoRepositoryFactory {
private Class clazz;
public CommonMongoRepoFactory(Class clazz) {
super(mongoTemplate);
this.clazz = clazz;
}
public CommonMongoRepoImpl getTargetRepository() {
return new CommonMongoRepoImpl(clazz);
}
public Class<?> getRepositoryClass() {
return CommonMongoRepoImpl.class;
}
}
我知道这有点像黑客，但没有文件，这很痛苦。如果有人知道更好，请给我一个github链接： - ）
通用回购接口
@NoRepositoryBean
public interface CommonMongoRepo<T, ID extends Serializable> extends MongoRepository<T,ID> {
public List<T> findByCategoryName(String categoryName);
实施
@NoRepositoryBean
public class CommonMongoRepoImpl<T, ID extends Serializable> extends SimpleMongoRepository<T,
ID> implements CommonMongoRepo<T, ID> {
private Class<T> type;
@Autowired
private static MongoTemplate mongoOperations;
@Autowired
private static EntityInformationCreator entityInformationCreator;
@Autowired
private CategoryRepo categoryRepo;
public CommonMongoRepoImpl(Class<T> type) {
super((MongoEntityInformation<T, ID>) entityInformationCreator.getEntityInformation(type), mongoOperations);
}
@Override
public List<T> findByCategoryName(String categoryName) {
Category category = categoryRepo.findByName(categoryName);
return mongoOperations.find(query(where("categories.$id").is(category.getId())), type);
}
问题
现在，当我尝试使用常用方法时，我得到了一个异常
在“实体”中找不到属性类别。当mongo repo试图自动实现该方法时，我猜是哪个。这是因为我将bean声明为@NoRepositoryBean
请帮助!!!不想为所有实体添加相同的自定义方法
答案 0 :(得分：7)
这是最好的解决方案！
第一步：
添加自定义方法到界面！
增加一个自定义的方法
#custom interface
/**
* Basic Repository for common custom methods
* @author liangping
*/
import java.io.Serializable;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.data.repository.NoRepositoryBean;
import org.springframework.data.repository.PagingAndSortingRepository;
@NoRepositoryBean
public interface WootideRepositoryCustom <T, ID extends Serializable>
extends PagingAndSortingRepository<T, ID>, MongoRepository<T, ID> {
public Page<T> search(Query query, Pageable pageable);
}
<强>实施
第二步：
为自定义方法添加工具！
实现你的自定义方法
/**
* implement for wootide basic repository
* @author liangping
*/
import java.io.Serializable;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.Pageable;
import org.springframework.data.mongodb.core.MongoOperations;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.repository.query.MongoEntityInformation;
import org.springframework.data.mongodb.repository.support.SimpleMongoRepository;
public class WootideRepositoryImpl<T, ID extends Serializable> extends
SimpleMongoRepository<T, ID> implements WootideRepositoryCustom<T, ID> {
public WootideRepositoryImpl(MongoEntityInformation<T, ID> metadata,
MongoOperations mongoOperations) {
super(metadata, mongoOperations);
}
@Override
public Page<T> search(Query query, Pageable pageable) {
long total = this.getMongoOperations().count(query, this.getEntityInformation().getJavaType() );
return new PageImpl<T>(this.getMongoOperations().find(query.with(pageable), this.getEntityInformation().getJavaType()), pageable, total);
}
}
为自定义存储库
创建新工厂/**
* Repository Factory for all Subrepository
* @author liangping
*/
import java.io.Serializable;
import org.springframework.data.mongodb.core.MongoOperations;
import org.springframework.data.mongodb.core.mapping.BasicMongoPersistentEntity;
import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.data.mongodb.repository.query.MongoEntityInformation;
import org.springframework.data.mongodb.repository.support.MappingMongoEntityInformation;
import org.springframework.data.mongodb.repository.support.MongoRepositoryFactory;
import org.springframework.data.mongodb.repository.support.MongoRepositoryFactoryBean;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.core.support.RepositoryFactorySupport;
import org.springframework.data.util.ClassTypeInformation;
import org.springframework.data.util.TypeInformation;
public class WootideRepositoryFactoryBean<R extends MongoRepository<T, I>, T, I extends Serializable>
extends MongoRepositoryFactoryBean<R, T, I> {
@Override
protected RepositoryFactorySupport getFactoryInstance(
MongoOperations operations) {
return new WootideMongoRepositoryFactory<T,I>( operations );
}
private static class WootideMongoRepositoryFactory<T, ID extends Serializable>
extends MongoRepositoryFactory {
private MongoOperations mongo;
public WootideMongoRepositoryFactory(MongoOperations mongoOperations) {
super(mongoOperations);
this.mongo = mongoOperations;
}
@SuppressWarnings("unchecked")
protected Object getTargetRepository(RepositoryMetadata metadata) {
TypeInformation<T> information = ClassTypeInformation.from((Class<T>)metadata.getDomainType());
MongoPersistentEntity<T> pe = new BasicMongoPersistentEntity<T>(information);
MongoEntityInformation<T,ID> mongometa = new MappingMongoEntityInformation<T, ID>(pe);
return new WootideRepositoryImpl<T, ID>( mongometa, mongo);
}
protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {
return WootideRepositoryCustom.class;
}
}
}
让它有效
<mongo:repositories base-package="com.***.mongodb"
factory-class="com.***.mongodb.custom.WootideRepositoryFactoryBean"/>
答案 1 :(得分：0)
有点延迟，但here是为Spring网络应用项目执行此操作的示例代码。重点是：