Spring example for maintaining Transaction in memory

Featues provided:

Add transaction:

   curl -H "Content-Type: application/json" -X PUT -d '{"amount":10,"type":"cc"}' {URL}/transaction/{transaction-id}
   curl -H "Content-Type: application/json" -X PUT -d '{"amount":10,"type":"dc", "parentId":1}' {URL}/transaction/{transaction-id}

GET transaction:

   curl -H "Content-Type: application/json" -X GET {URL}/transaction/{transaction-id}

GET all transaction of same type

   curl -H "Content-Type: application/json" -X GET {URL}/transaction/types/{transaction-type}

GET sum of all transactions linked from parent downward

   curl -H "Content-Type: application/json" -X GET {URL}/transaction/sum/{transaction-id}

Examples:

    PUT transaction:
    curl -H "Content-Type: application/json" -X PUT -d '{"amount":10,"type":"cc"}' {URL}/transaction/1
    curl -H "Content-Type: application/json" -X PUT -d '{"amount":10,"type":"cc", "parentId":1}' {URL}/transaction/2
    
    GET transaction:
    curl -H "Content-Type: application/json" -X GET {URL}/transaction/1
    curl -H "Content-Type: application/json" -X GET {URL}/transaction/2
    
    GET all transactions for same type:
    curl -H "Content-Type: application/json" -X GET {URL}/transaction/types/cc
    
    GET sum of all transactions linked from parent downward:
    curl -H "Content-Type: application/json" -X GET {URL}/transaction/sum/1