mongdb查询笔记-白红宇

mongdb查询笔记

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发布时间：2019-05-02

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10.3.1. Repository delete queries

The above keywords can be used in conjunction with 
delete…By
 or 
remove…By
 to create queries deleting matching documents.

Example 75. 
Delete…By
 Query

public interface PersonRepository extends MongoRepository<Person, String> { List <Person> deleteByLastname(String lastname); Long deletePersonByLastname(String lastname);}

Using return type 
List
 will retrieve and return all matching documents before actually deleting them. A numeric return type directly removes the matching documents returning the total number of documents removed.

Keyword	Sample	Logical result
After	findByBirthdateAfter(Date date)	{"birthdate" : {"$gt" : date}}
GreaterThan	findByAgeGreaterThan(int age)	{"age" : {"$gt" : age}}
GreaterThanEqual	findByAgeGreaterThanEqual(int age)	{"age" : {"$gte" : age}}
Before	findByBirthdateBefore(Date date)	{"birthdate" : {"$lt" : date}}
LessThan	findByAgeLessThan(int age)	{"age" : {"$lt" : age}}
LessThanEqual	findByAgeLessThanEqual(int age)	{"age" : {"$lte" : age}}
Between	findByAgeBetween(int from, int to)	{"age" : {"$gt" : from, "$lt" : to}}
In	findByAgeIn(Collection ages)	{"age" : {"$in" : [ages…]}}
NotIn	findByAgeNotIn(Collection ages)	{"age" : {"$nin" : [ages…]}}
IsNotNull, NotNull	findByFirstnameNotNull()	{"firstname" : {"$ne" : null}}
IsNull, Null	findByFirstnameNull()	{"firstname" : null}
Like, StartingWith, EndingWith	findByFirstnameLike(String name)	{"firstname" : name} ( name as regex)
Containing on String	findByFirstnameContaining(String name)	{"firstname" : name} (name as regex)
NotContaining on String	findByFirstnameNotContaining(String name)	{"firstname" : { "$not" : name}} (name as regex)
Containing on Collection	findByAddressesContaining(Address address)	{"addresses" : { "$in" : address}}
NotContaining on Collection	findByAddressesNotContaining(Address address)	{"addresses" : { "$not" : { "$in" : address}}}
Regex	findByFirstnameRegex(String firstname)	{"firstname" : {"$regex" : firstname }}
(No keyword)	findByFirstname(String name)	{"firstname" : name}
Not	findByFirstnameNot(String name)	{"firstname" : {"$ne" : name}}
Near	findByLocationNear(Point point)	{"location" : {"$near" : [x,y]}}
Near	findByLocationNear(Point point, Distance max)	{"location" : {"$near" : [x,y], "$maxDistance" : max}}
Near	findByLocationNear(Point point, Distance min, Distance max)	{"location" : {"$near" : [x,y], "$minDistance" : min, "$maxDistance" : max}}
Within	findByLocationWithin(Circle circle)	{"location" : {"$geoWithin" : {"$center" : [ [x, y], distance]}}}
Within	findByLocationWithin(Box box)	{"location" : {"$geoWithin" : {"$box" : [ [x1, y1], x2, y2]}}}
IsTrue, True	findByActiveIsTrue()	{"active" : true}
IsFalse, False	findByActiveIsFalse()	{"active" : false}
Exists	findByLocationExists(boolean exists)	{"location" : {"$exists" : exists }}