spring-mongodb

问题 When working with embedded mongo document I am trying to unwind the array but I am getting exception like org.springframework.data.mapping.model.MappingInstantiationException: Failed to instantiate java.util.List using constructor NO_CONSTRUCTOR with arguments. The query what I wrote is, Aggregation agg = newAggregation( unwind("recipients"), match(Criteria.where("recipients.userId").is("800").andOperator(Criteria.where("recipients.status").is(false) ))); Logs.java private String id; private

问题 I have a situation where I have got one result from aggregation where I am getting data in this format. { "_id" : ObjectId("5a42432d69cbfed9a410e8ad"), "bacId" : "BAC0023444", "cardId" : "2", "defaultCardOrder" : "2", "alias" : "Finance", "label" : "Finance", "for" : "", "cardTooltip" : { "enable" : true, "text" : "" }, "dataBlocks" : [ { "defaultBlockOrder" : "1", "blockId" : "1", "data" : "0" }, { "defaultBlockOrder" : "2", "blockId" : "2", "data" : "0" }, { "defaultBlockOrder" : "3",

问题 I have below document structure. { "_id" : { "teacherId" : "<teacherId>", "Year" : "<Year>" }, "groups" : [ { "groupId" : "<uuid>", "groupName" : "<name>", "groupNameLowerCase" : "<name_in_lower_case>", "description" : "<desc>", "students" : ["<studentid1>", "<studentid2>", ...], "editedDate" : "<currentTimestamp>" }, ... ], "editedDate" : "<currentTimestamp>", "points" : "<points>" } Consider that below two documents are present in DB { "_id" : { "teacherId" : "1", "Year" : "2016" }, "groups

问题 i'm looking to reproduce this snipet into Java code : db.getCollection('admins_comptes_client_ceov4').aggregate([ {$lookup: {from: "contrats_ceov4",localField: "CUSTOMERNUMBER",foreignField: "CUSTOMERNUMBER",as: "arrayForeignObject"} {$unwind: { path: "$arrayForeignObject", preserveNullAndEmptyArrays: true}}, {$replaceRoot: { newRoot: { $mergeObjects: [ "$arrayForeignObject", "$$ROOT" ] } }}, { $project: { "arrayForeignObject": 0, "_id": 0 } }, { $out: "aggregate" }]) I'm here so far :

问题 I recently bumped up my spring boot version to 1.4.0. Now I see the following warnings below. I am using spring-mongodb and spring-redis (strictly for caching). Is this something I should be concerned about? Multiple Spring Data modules found, entering strict repository configuration mode! Spring Data Redis - Could not safely identify store assignment for repository What does strict repository configuration mode really mean? . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '

问题 I have a collection of documents like this in a mongo db : "_id" : ObjectId("592bc37c339e7a23788b4c7c"), "trips" : [ { "tripGcsId" : "5937f86e339e7a2a58ac3186", "tripCounter" : NumberLong(1283), "tripRef" : "hjkhjk" }, { "tripGcsId" : "5937f914339e7a2a58ac318b", "tripCounter" : NumberLong(1284), "tripRef" : "fjh" } ] and a method on the server side (Spring+Mongo): public List<String> removeTripObject( List<String> tripIds ) { Query query = Query.query( Criteria.where( "trips" ).elemMatch(

问题 I'm using spring mongo template to run an agreegation query on mongodb. I'm wondering is there any way to find out the count of aggregation result in spring mongo template? Here is my Aggregation sample : Aggregation agg = newAggregation(Class1.class, match(criteria), group("prop1", "prop2") .avg("x").as("averageX") ); I just need to know how to get count of this aggregation result in spring mongo template. 回答1: My response comes very late but it might help others. To get the count for an

问题 The following example works perfectly. MatchOperation matchStage = mongodbConstructorQueryUtils.makeMatchStage(topCriteria); GroupOperation groupStage = Aggregation.group("teamId", "teamName") .sum("shotsOfOneAttempted").as("sumShotsOfOneAttempted") .sum("shotsOfTwoAttempted").as("sumShotsOfTwoAttempted") .sum("shotsOfThreeAttempted").as("sumShotsOfThreeAttempted") .addToSet("idMatchCallExt").as("matches"); ProjectionOperation projectionOperation = Aggregation.project("matches") .and(

问题 I have a spring boot service using MongoDB as a repository for my beans. I added a feature to download a bean in JSON format and upload it on another system (or simply to have a file backup). I am using the ObjectMapper with the writeValueAsString method. This all works as expected, except that there are additional properties which aren't part of my bean. All properties that are defined with @DBRef thus pointing to other beans in the MongoDB have a target property containing the exact same

问题 I have a retailer class with nested dbref of Address. I would like to fetch retailers based on city which is part of Address class. But I am getting below error. org.springframework.data.mapping.model.MappingException: Invalid path reference address.city! Associations can only be pointed to directly or via their id property! Could you please let me know what's wrong and how to fix this? Code is given below @Document(collection="retailer") @TypeAlias("retailer") public class Retailer extends