Mongodb native query and equivalent java code - mongodb

Question

JSON DO
{
"_id" : "t6Y596WHx44S",
"pos_txn_type" : "CREDIT_AUTHORIZATION",
"pos_payment_method" : "CREDIT_CARD",
"processing_status" : "APPROVED",
"route" : NumberInt(7),
"audit_info" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:26:57.000+0000"),
"updated_on" : ISODate("2016-08-08T07:26:57.000+0000")
},
"inflight_transactions" : [
{
"message_exchange" : {
"service_type" : "GATEWAY_SERVICE",
"adapter_id" : "adpIsoUms",
"route1" : NumberInt(7),
"request" : {
"type" : "com.renovite.ripps.kernel.msg.GatewayRequest",
"acquirer_inst_id" : "00000000001",
"host_address" : "127.0.0.1:2000",
"client_address" : "127.0.0.1:58577",
"domain_request" : {
"type" : "com.renovite.ripps.kernel.msg.CardRequestMessage",
"card" : {
"masked_pan" : "411111xxxxx1111",
"card_type" : "VISA"
},
"transactionAmount" : {
"amount" : NumberInt(100),
"amount_type" : "TXN_AMOUNT",
"currency" : "USD",
"currency_iso" : "840",
"currency_minor_unit" : NumberInt(2)
},
"additionalAmountMap" : {
},
"pos" : {
"stan" : "470641215751",
"entry_mode" : "SWIPED",
"pos_environment" : "ATTENDED",
"card_holder_verification_method" : "UNKNOWN",
"pos_card_holder_verification_method" : "MANUAL_SIGNATURE",
"terminal_capability" : "MSR_MANUAL",
"pos_terminal_id" : "0000000000000001",
"pos_transaction_time" : ISODate("2016-08-08T07:26:55.000+0000"),
"pos_transaction_date" : ISODate("2016-08-08T07:26:55.000+0000"),
"pos_function_code" : "100",
"cp" : true
},
"billTo" : {
"postal_code" : "94538"
}
},
"merchant_details" : {
"merchant_code" : "00000000001",
"merchant_category_code" : "5965",
"merchant_postal_code" : "4567",
"device_code" : "0000000000000001"
},
"auditInfo" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:26:57.000+0000")
},
"additionalAttributes" : {
},
"raw_header" : "ISO.UMS.03",
"retrival_reference_number" : "000001215751"
},
"response" : {
"type" : "com.renovite.ripps.kernel.msg.GatewayResponse",
"auditInfo" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:27:01.000+0000")
},
"additionalAttributes" : {
},
"domain_response" : {
"type" : "com.renovite.ripps.kernel.msg.CardResponseMessage",
"auth_code" : "831000",
"amount" : 9601.0,
"currency" : "USD",
"transaction_time" : ISODate("2016-08-08T01:57:00.000+0000"),
"processor_ref_number" : "4706412203976900504007",
"approval_code" : "0000",
"avs_response_code" : "2",
"reconciliation_id" : "4706412203976900504007",
"partial_auth" : false
}
}
}
},
{
"message_exchange" : {
"service_type" : "FRAUD_SERVICE",
"adapter_id" : "cartFRAUD",
"request" : {
"type" : "com.renovite.ripps.kernel.msg.ProviderRequest",
"auditInfo" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:26:58.000+0000")
},
"additionalAttributes" : {
"MerchantTransactionIdentifier" : "t6Y596WHx44S"
},
"retrivalReferenceNumber" : "000001215751",
"merchantDetails" : {
"merchant_code" : "00000000001",
"merchant_category_code" : "5965",
"partial_auth" : "Y"
},
"domain_request" : {
"type" : "com.renovite.ripps.kernel.msg.fraud.FraudRequestMessage",
"client_address" : "127.0.0.1:58577"
}
},
"route" : "6",
"processing_status" : "APPROVED",
"response" : {
"type" : "com.renovite.ripps.kernel.msg.ProviderResponse",
"domain_response" : {
"type" : "com.renovite.ripps.kernel.msg.fraud.FraudResponseMessage",
"fraud_score" : NumberInt(22)
},
"auditInfo" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:26:58.000+0000")
},
"additionalAttributes" : {
}
}
}
},
{
"message_exchange" : {
"service_type" : "AUTH_SERVICE",
"adapter_id" : "cartVACP",
"request" : {
"type" : "com.renovite.ripps.kernel.msg.ProviderRequest",
"auditInfo" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:26:58.000+0000")
},
"additionalAttributes" : {
"COMMERCEINDICATOR" : "retail",
"MerchantTransactionIdentifier" : "t6Y596WHx44S",
"ThirdPartyCertificationNumber" : "575357012698"
},
"retrivalReferenceNumber" : "000001215751",
"merchantDetails" : {
"merchant_code" : "00000000004",
"merchant_category_code" : "5965",
"partial_auth" : "Y"
},
"domain_request" : {
"type" : "com.renovite.ripps.kernel.msg.CardRequestMessage",
"card" : {
"masked_pan" : "411111xxxxx1111",
"card_type" : "VISA"
},
"transactionAmount" : {
"amount" : 9601.0,
"amount_type" : "TXN_AMOUNT",
"currency" : "USD",
"currency_iso" : "840",
"currency_minor_unit" : NumberInt(2)
},
"additionalAmountMap" : {
},
"pos" : {
"entry_mode" : "SWIPED",
"pos_terminal_id" : "0000000087654321",
"cp" : true
},
"billTo" : {
"postal_code" : "94538"
}
},
"merchant_code" : "v5p234p575357"
},
"route" : "3",
"processing_status" : "APPROVED",
"response" : {
"type" : "com.renovite.ripps.kernel.msg.ProviderResponse",
"status" : "ACCEPT",
"domain_response" : {
"type" : "com.renovite.ripps.kernel.msg.CardResponseMessage",
"auth_code" : "831000",
"amount" : 9601.0,
"currency" : "USD",
"transaction_time" : ISODate("2016-08-08T01:57:00.000+0000"),
"processor_ref_number" : "4706412203976900504007",
"approval_code" : "100",
"avs_response_code" : "2",
"reconciliation_id" : "4706412203976900504007",
"partial_auth" : false
},
"auditInfo" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:27:01.000+0000")
},
"additionalAttributes" : {
"PYMT_NETWORK_TXN_ID" : "016153570198200",
"RECEIPT_NUMBER" : "138115",
"REQUEST_TOKEN" : "Ahj/7wSR/kUuB8C84NOOelmjdg2aMWTJgzct2zlgwasGjBg3S36RRSYgFLfpFFJi0gp1MyMJsMmkmW6QHhMgQJyP8ilwPgXnBpxwvBkj",
"REASONCODE" : NumberInt(100),
"PROCESSORRESPONSE" : "00",
"CARDCATEGORY" : "A",
"MERCHANTREFERENCECODE" : "000001215751",
"CARDGROUP" : "0"
}
}
}
},
{
"message_exchange" : {
"service_type" : "LOYALTY_SERVICE",
"adapter_id" : "cartLOYALTY",
"request" : {
"type" : "com.renovite.ripps.kernel.msg.ProviderRequest",
"auditInfo" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:27:01.000+0000")
},
"additionalAttributes" : {
"MerchantTransactionIdentifier" : "t6Y596WHx44S"
},
"retrivalReferenceNumber" : "000001215751",
"merchantDetails" : {
"merchant_code" : "00000000001",
"merchant_category_code" : "5965",
"partial_auth" : "Y"
},
"domain_request" : {
"type" : "com.renovite.ripps.kernel.msg.loyalty.LoyaltyRequestMessage",
"amount" : 9601.0,
"client_address" : "127.0.0.1:58577"
}
},
"route" : "7",
"processing_status" : "APPROVED",
"response" : {
"type" : "com.renovite.ripps.kernel.msg.ProviderResponse",
"domain_response" : {
"type" : "com.renovite.ripps.kernel.msg.loyalty.LoyaltyResponseMessage",
"loyaltyPoint" : NumberInt(677)
},
"auditInfo" : {
"version" : "1.0.0.0",
"created_on" : ISODate("2016-08-08T07:27:01.000+0000")
},
"additionalAttributes" : {
}
}
}
}
]
}
Below is the native mongo query -
db.txnlog.aggregate([
{
$group : {_id : "$pos_txn_type", count : {$sum : 1}, route_sum : {$push : "$inflight_transactions.0.message_exchange.request.domain_request.transactionAmount.amount"}}
}
])
and sheel output-
{ "_id" : "RECONCILE_REQUEST", "count" : 9, "route_sum" : [ [ ], [ ], [ ], [ ], [ ], [ ], [ ], [ ], [ ] ] }
{ "_id" : "CREDIT_CAPTURE", "count" : 2, "route_sum" : [ [ ], [ ] ] }
{ "_id" : "CREDIT_AUTHORIZATION", "count" : 2, "route_sum" : [ [ ], [ ] ] }
Problem i am not getting amount sum ? Please provide some input.

Answer 1

You can not use the dot notation to access an array element on the group stage, you have to add an extra $project stage to $slice the inflight_transactions array. Here is the query:
db.txnlog.aggregate([
{$project: {
pos_txn_type: 1,
inflight_transaction: {$slice: ["$inflight_transactions", 1]}
}},
{$group: {_id: "$pos_txn_type",
count: {$sum: 1},
route_sum: {$push: "$inflight_transaction.message_exchange.request.domain_request.transactionAmount.amount"}
}
}
]);
// output
{ "_id" : "CREDIT_AUTHORIZATION", "count" : 1, "route_sum" : [ [ 100 ] ] }