java - DROOLS Rule Engine : Making network calls within Drools -


one of transactional systems work upon deals data-gathering multiple external systems, , making business decision based upon (transactional entity + gathered-data).

currently , follow following steps:

  1. gathering data multiple sub-systems.

  2. using (gathered data + transactional entity) input drools, , deriving business decision out of it.

one major cons of above approach have gather data beforehand (expensive network calls) without bothering usefulness of data.

what trying delay service calls moving rule execution layer. intention leverage drools decision tree avoid making service call if can take decision on available data (within transactional entity itself).

just want thought process validated (i.e, making service call part of rules execution practice or not.).

can please share pros/cons around same. leads appreciated

you cannot reason facts don't have (yet). if facts have let decide else need can write rules according following trivial example.

rule "x , y, not z" when     dimension( $id: id, coord == "x" )     dimension( id == $id, coord == "y" )     not dimension( id == $id, coord == "z" )     fetch , insert missing dimension end  rule "x, y , z" ... end

note process of fetching , inserting must not executed synchronously. can insert request event queue - use java.


Comments

Post a Comment

Popular posts from this blog

asynchronous - C# WinSCP .NET assembly: How to upload multiple files asynchronously -

i using winscp .net assembly uploading files. want upload multiple files asynchronous way. have created method works single upload. public class uploadingdata { private sessionoptions _sessionoptions; private session _session; //connection etc private void onconnected() { foreach (var fileinfo in localfileslist) { var task = task.factory.startnew(() => uploadfilesasync(fileinfo)); } } private async task uploadfilesasync(string file) { string remotefilepath = _session.translatelocalpathtoremote(file, @"/", "/test_data_upload"); var uploading = _session.putfiles(file, remotefilepath, false); //when done await task.run(() => thread.sleep(1000)); } } please suggest me correct way. thanks you can use backgroundworker class this: string[] images = new string[50]; foreach (var path in images) { backgroundworker
Read more

aws api gateway - SerializationException in posting new Records via Dynamodb Proxy Service in API -

i getting "__type": "com.amazon.coral.service#serializationexception" as reply in postman & in test console in api gateway trying post record directly dynamodb using api proxy services.. referring aws article - https://aws.amazon.com/blogs/compute/using-amazon-api-gateway-as-a-proxy-for-dynamodb/ here's mapping { "tablename": "tablenamegoeshere", "item": { "id" : "$context.requestid" "eventname" : "$input.path('$.eventname')", "timestamp" : $input.path('$.timestamp'), "answers": "$util.parsejson($input.path('$.answers'))" } } update: did asked ... , worked if try add array of json objects gives me above same error - here's trying now. please - couldnt find on google well #set($inputroot = $input.path('$')) { "tablename": "answer", "item": {
Read more

asp.net - Problems sending emails from forum -

i have been redesigning site has message board, has been written guy looked after site. it has few problems , written in .asp , uses .mdb files database. you can see whole thing here . feel free post if helps, test thing have set using original files , new database. the basic problem when posts message, supposed email sent them, have posted it. when replies, originator supposed message, replier has been posted. i’d have thought @ point in process there should script/file in postmessage.asp? the postmessage.asp page below. <% option explicit %> <!-- #include virtual="common/adovbs.inc" --> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <meta name="generator" content="microsoft frontpage 4.0"> <meta name="progid" content="frontpage.editor.document"> <title>new page 2</title> <base target="_self"
Read more