Architectural considerations for having a portable C++ domain layer interfaced with Java(JNI) and C#(C++/CLI) -

-


Architectural considerations for having a portable C++ domain layer interfaced with Java(JNI) and C#(C++/CLI) -

i need create desktop app pretty complex , handles particular domain. domain has entities @ end. want ui of desktop app portable different frameworks such java(eclipse rcp plugin) , .net(visual studio plugin).

1.)can write domain layer using c++ , interface java using jni java 2.)use same c++ layer point 1.) interfacing .net (c++/cli) plugin vstudio

what architectural considerations, pitfalls, future issues 1 face if 1 relies on portable c++ layer interfaced higher level apis java , c# rich client desktop application

for illustration 1 of issue face cannot debug , step native code java. there many such items?

should rewrite domain layer using .net , java each type of environment rather keeping portable c++ layer?

why isn't such approach adopted industry? practical issues 1 faces when 1 has jni layer in between view , domain layer?

interfacing domain models in language / on platform really painful , main architectural advice avoid going there.

if want portable desktop app, think improve off writing end-to-end in java (or perhaps jvm language scala or clojure if 1 of people thinks java bit old-fashioned).

rationale:

you'll only need write gui layer once java give access environments need. can run java desktop apps pretty much everywhere has jvm, without recompiling. need take little care avoid hard-coding platform specific features (e.g obvious stuff don't assume "\" file separator, need utilize portable file/pathseparator instead). this avoids complexities of having lot of cross-language interfacing. inherently hard problem, since languages have different object format , method calling semantics. java has great open source library ecosystem respect portable code. you can create pretty decent portable uis in java purposes (using swing or swt), , improve in long run developing custom ui layer each target platform. if smart, can architect app gui interacts end domain objects through clean , simple api. if this, easier add together new gui options in future (for illustration web-based front end end).

writing app end-to-end in .net feasible , might bit easier on gui side given how microsoft's gui-building tools are, has big disadvantage you're locked windows, portability , platform flexibility goes out of window. in add-on (though depend on domain) think java ecosystem has overall border in terms of library ecosystem , tool back upwards (with things maven).

c# java .net c++-cli jni

Comments

Post a Comment

Popular posts from this blog

How do I check if an insert was successful with MySQLdb in Python? -

-
How do I check if an insert was successful with MySQLdb in Python? - i have code: cursor = conn.cursor() cursor.execute(("insert new_files (videos_id, filename, " "is_processing) values (%s,%s,1)"), (id, filename)) logging.warn("%d", cursor.rowcount) if (cursor.rowcount == 1): logging.info("inserted values %d, %s", id, filename) else: logging.warn("failed insert values %d, %s", id, filename) cursor.close() fun is, cursor.rowcount always one, though updated database create videos_id unique key. is, insert fails because in tests same videos_id going appear (and when check database, nil inserted). whatever reason, rowcount 1 - logging.warn have spits out rowcount of 1. so, question: can utilize rowcount work out if insert went fine? if so, (presumably) doing wrong? otherwise, how check if insert went fine? your code not commit after modifications (your modifications rolled back). should...
Read more

delphi - blogger via idHTTP : error 400 bad request -

-
delphi - blogger via idHTTP : error 400 bad request - i'm trying post blogger using idhttp component, however, i'm getting "http/1.0 400 bad request" error. procedure tform1.button1click(sender: tobject); var request,response,req : tstringlist; auth,blogid : string; begin blogid := '00000000000000000000000'; request := tstringlist.create; response := tstringlist.create; req := tstringlist.create; idhttp1.request.connection := 'keep-alive'; idhttp1.request.contenttype := 'application/x-www-form-urlencoded'; idssliohandlersocket1.ssloptions.method := sslvsslv23; request.clear(); request.values['accounttype'] := 'google'; request.values['email'] := 'xxx@gmail.com'; request.values['passwd'] := 'yyy'; request.values['service'] := 'blogger'; response.text :=idhttp1.post('https://www.google.com/accounts/clientlogin',request); auth := resp...
Read more

postgresql - ERROR: operator is not unique: unknown + unknown -

-
postgresql - ERROR: operator is not unique: unknown + unknown - i have postgis database , have compute new values rows in new column. these values should average of values of several columns. query: insert bdps (da_m) values (avg('da_1'+'da_2'+'da_3'+'da_4'+'da_5'+'da_6'+'da_7')); in query bdps database, da_m new column , da_1 da_7 existing columns have double precision type. da_m created using alter table bdps add together column da_m double precision; i next error: error: operator not unique: unknown + unknown line 2: values (avg('da_1'+'da_2'+'da_3'+'da_4'+'da_5'+'da_6'+'da_7... ^ hint: not take best candidate operator. might need add together explicit type casts. ********** error ********** error: operator not unique: unknown + unknown sql state: 42725 hint: not take best candidate operator. might need add togethe...
Read more