{"id":25440,"date":"2022-12-10T05:20:23","date_gmt":"2022-12-09T23:50:23","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-get-mongodb-aggregated-month-wise-data-using-java-closed\/"},"modified":"2022-12-10T05:20:23","modified_gmt":"2022-12-09T23:50:23","slug":"solved-how-to-get-mongodb-aggregated-month-wise-data-using-java-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-get-mongodb-aggregated-month-wise-data-using-java-closed\/","title":{"rendered":"[Solved] How to get mongoDB aggregated month wise data using java [closed]"},"content":{"rendered":"

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Use the aggregation framework<\/a><\/strong> with following aggregation pipeline (Mongo shell implementation):<\/p>\n

db.ledger.aggregate([\n    {\n        \"$unwind\": \"$Accounts\"\n    },\n    {\n        \"$project\": {\n            \"Total_Credits\" : \"$Accounts.Total_Credits\",\n            \"Total_Debits\" : \"$Accounts.Total_Debits\",\n            \"month_year\" : {  \"$substr\": [ \"$Accounts.Date\", 3, -1 ] }\n        }\n    },\n    {\n        \"$group\": {\n            \"_id\": \"$month_year\",\n            \"Total_Credits\": { \"$sum\": \"$Total_Credits\" },\n            \"Total_Debits\": { \"$sum\": \"$Total_Debits\" }\n        }\n    }\n])\n<\/code><\/pre>\n
With the example above, this outputs to console:<\/p>\n
\/* 0 *\/\n{\n    \"result\" : [ \n        {\n            \"_id\" : \"07-2015\",\n            \"Total_Credits\" : 1000,\n            \"Total_Debits\" : 0\n        }, \n        {\n            \"_id\" : \"05-2015\",\n            \"Total_Credits\" : 5000,\n            \"Total_Debits\" : 0\n        }\n    ],\n    \"ok\" : 1\n}\n<\/code><\/pre>\n
With Java, this can be implemented as follows:<\/p>\n
import com.mongodb.AggregationOutput;\nimport com.mongodb.BasicDBObject;\nimport com.mongodb.DB;\nimport com.mongodb.DBCollection;\nimport com.mongodb.DBObject;\n\npublic class Aggregation {\n\n    public static void main(String[] args) {\n\n        DB db = MongoDb.getAccountsDb();\n        DBCollection ledger = db.getCollection(\"ledger\");\n\n        \/\/------------------------------------------------- aggregation framework\n\n        DBObject unwind = new BasicDBObject(\"$unwind\", \"$Accounts\");\n        List<Object> substrList = Arrays.asList(new Object[]{\"$Accounts.Date\", 3, -1});\n        DBObject monthProjection = new BasicDBObject(\"$substr\", substrList);\n        DBObject projectFields = new BasicDBObject(\"Total_Credits\", \"$Accounts.Total_Credits\");\n        projectFields.put(\"Total_Debits\", \"$Accounts.Total_Debits\");\n        projectFields.put(\"month_year\", monthProjection);\n        DBObject project = new BasicDBObject(\"$project\", projectFields );\n\n        DBObject groupFields = new BasicDBObject( \"_id\", \"$month_year\");\n        groupFields.put(\"Total_Credits\", new BasicDBObject( \"$sum\", \"$Total_Credits\"));\n        groupFields.put(\"Total_Debits\", new BasicDBObject( \"$sum\", \"$Total_Debits\"));\n        DBObject group = new BasicDBObject(\"$group\", groupFields);\n\n        AggregationOutput output = ledger.aggregate( unwind, project, group );\n\n        System.out.println(\"\\n\" + output);\n    }\n\n}\n<\/code><\/pre>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            8<\/span> <\/p><\/div>\n<\/div>\n
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solved How to get mongoDB aggregated month wise data using java [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Use the aggregation framework with following aggregation pipeline (Mongo shell implementation): db.ledger.aggregate([ { “$unwind”: “$Accounts” }, { “$project”: { “Total_Credits” : “$Accounts.Total_Credits”, “Total_Debits” : “$Accounts.Total_Debits”, “month_year” : { “$substr”: [ “$Accounts.Date”, 3, -1 ] } } }, { “$group”: { “_id”: “$month_year”, “Total_Credits”: { “$sum”: “$Total_Credits” }, “Total_Debits”: { “$sum”: “$Total_Debits” } } } … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[2979,323,1128],"class_list":["post-25440","post","type-post","status-publish","format-standard","hentry","category-solved","tag-aggregation-framework","tag-java","tag-mongodb"],"yoast_head":"\n[Solved] How to get mongoDB aggregated month wise data using java [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-get-mongodb-aggregated-month-wise-data-using-java-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to get mongoDB aggregated month wise data using java [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Use the aggregation framework with following aggregation pipeline (Mongo shell implementation): db.ledger.aggregate([ { "$unwind": "$Accounts" }, { "$project": { "Total_Credits" : "$Accounts.Total_Credits", "Total_Debits" : "$Accounts.Total_Debits", "month_year" : { "$substr": [ "$Accounts.Date", 3, -1 ] } } }, { "$group": { "_id": "$month_year", "Total_Credits": { "$sum": "$Total_Credits" }, "Total_Debits": { "$sum": "$Total_Debits" } } } ... 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