模块 develop.toolkit.support

程序包 develop.toolkit.support.mongo.utils

类 AggregationOperationUtils

java.lang.Object

develop.toolkit.support.mongo.utils.AggregationOperationUtils

public final class AggregationOperationUtils
extends Object

作者:

qiushui on 2018-12-25.

构造器概要

构造器

构造器	说明
AggregationOperationUtils()

方法概要

修饰符和类型	方法	说明
static org.springframework.data.mongodb.core.aggregation.AggregationOperation	addFields(String... expressions)	实现$addFields
static org.springframework.data.mongodb.core.aggregation.AggregationOperation	addRefFields(String newFieldName, String sourceFieldName, JoinType joinType)	添加依赖字段 用于解决@DBRef字段不能在$lookup上使用$的问题 参考于 https://stackoverflow.com/questions/40622714/mongo-how-to-lookup-with-dbref/41677055#41677055
static List<org.springframework.data.mongodb.core.aggregation.AggregationOperation>	aggregationOperations(org.springframework.data.mongodb.core.aggregation.AggregationOperation... aggregationOperations)	组装AggregationOperation列表
protected static String	collectionNameFormDocumentAnnotation(Class<?> docClass)	从@Document取得集合名称
static org.springframework.data.mongodb.core.aggregation.AggregationOperation	groupCount()	已过时。
static org.springframework.data.mongodb.core.aggregation.AggregationOperation	matchForQuery(org.springframework.data.mongodb.core.query.Query query)	从query中得到AggregationOperation
static org.springframework.data.mongodb.core.aggregation.AggregationOperation	project(String... fieldStrs)	简化project的代码

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

AggregationOperationUtils

public AggregationOperationUtils()

方法详细资料

addRefFields

public static org.springframework.data.mongodb.core.aggregation.AggregationOperation addRefFields(String newFieldName,
                                                                                                  String sourceFieldName,
                                                                                                  JoinType joinType)

添加依赖字段 用于解决@DBRef字段不能在$lookup上使用$的问题 参考于 https://stackoverflow.com/questions/40622714/mongo-how-to-lookup-with-dbref/41677055#41677055

参数:

newFieldName -

sourceFieldName -

joinType -

返回:

matchForQuery

public static org.springframework.data.mongodb.core.aggregation.AggregationOperation matchForQuery(org.springframework.data.mongodb.core.query.Query query)

从query中得到AggregationOperation

参数:

query -

返回:

groupCount

@Deprecated
public static org.springframework.data.mongodb.core.aggregation.AggregationOperation groupCount()

已过时。

查询记录数管道

返回:

addFields

public static org.springframework.data.mongodb.core.aggregation.AggregationOperation addFields(String... expressions)

实现$addFields

参数:

expressions -

返回:

project

public static org.springframework.data.mongodb.core.aggregation.AggregationOperation project(String... fieldStrs)

简化project的代码

参数:

fieldStrs -

返回:

aggregationOperations

public static List<org.springframework.data.mongodb.core.aggregation.AggregationOperation> aggregationOperations(org.springframework.data.mongodb.core.aggregation.AggregationOperation... aggregationOperations)

组装AggregationOperation列表

参数:

aggregationOperations -

返回:

collectionNameFormDocumentAnnotation

protected static String collectionNameFormDocumentAnnotation(Class<?> docClass)

从@Document取得集合名称

参数:

docClass -

返回: