Re: DDD Implementation: Marker interfaces for all classes
"Niklas Mehner [email protected] [domaindrivendesign]" <[email protected]> Sun, 14 Aug 2016 21:49:36 +0200
| Newsgroups | gmane.comp.programming.domain-driven-design |
|---|---|
| Message-ID | <CANx61CVyJQh1XpZE3_F7zbOVPsNoE_ZRWWpV+2P6fE5b0ib0ig@mail.gmail.com> |
--001a113f91dc5b6070053a0d6ac5 Content-Type: text/plain; charset="UTF-8" ok, thanks. That answers my question. 2016-08-14 1:18 GMT+02:00 Paul Rayner [email protected] [domaindrivendesign] <[email protected]>: > > > To put this in perspective: People in this project are coming from a 4GL >> background using a tool with very limited set of concepts/capabilities. The >> new development platform is JEE. Now they are concerned that there will be >> chaotic code structures and want to limit this by only allowing a defined >> set of building blocks and no classes that do not conform to these building >> blocks. >> > > I see this approach as being very problematic. The DDD building block > patterns are *not* intended to be a complete list of object types for > domain modeling. They are a set of useful domain modeling patterns that can > help get your domain complexity under control by simplifying your domain > model. > > There are other - better - ways to avoid chaotic code structures. > > --001a113f91dc5b6070053a0d6ac5 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <head> <style type=3D"text/css"> <!-- /* start of attachment style */ .ygrp-photo-title{ clear: both; font-size: smaller; height: 15px; overflow: hidden; text-align: center; width: 75px; } div.ygrp-photo{ background-position: center; background-repeat: no-repeat; background-color: white; border: 1px solid black; height: 62px; width: 62px; } div.photo-title=20 a, div.photo-title a:active, div.photo-title a:hover, div.photo-title a:visited { text-decoration: none;=20 } div.attach-table div.attach-row { clear: both; } div.attach-table div.attach-row div { float: left; /* margin: 2px;*/ } p { clear: both; padding: 15px 0 3px 0; overflow: hidden; } div.ygrp-file { width: 30px; valign: middle; } div.attach-table div.attach-row div div a { text-decoration: none; } div.attach-table div.attach-row div div span { font-weight: normal; } div.ygrp-file-title { font-weight: bold; } /* end of attachment style */ --> </style> </head> <html> <head> <style type=3D"text/css"> <!-- #ygrp-mkp { border: 1px solid #d8d8d8; font-family: Arial; margin: 10px 0; padding: 0 10px; } #ygrp-mkp hr { border: 1px solid #d8d8d8; } #ygrp-mkp #hd { color: #628c2a; font-size: 85%; font-weight: 700; line-height: 122%; margin: 10px 0; } #ygrp-mkp #ads { margin-bottom: 10px; } #ygrp-mkp .ad { padding: 0 0; } #ygrp-mkp .ad p { margin: 0; } #ygrp-mkp .ad a { color: #0000ff; text-decoration: none; } --> </style> </head> <body> <!-- |**|begin egp html banner|**| --> <br><br> <!-- |**|end egp html banner|**| --> <div dir=3D"ltr">ok, thanks. That answers my question.<br><div><div class= =3D"gmail_extra"><br><div class=3D"gmail_quote">2016-08-14 1:18 GMT+02:00 P= aul Rayner <a href=3D"mailto:[email protected]">[email protected]= om</a> [domaindrivendesign] <span dir=3D"ltr"><<a href=3D"mailto:domaind= [email protected]" target=3D"_blank">domaindrivendesign@yahoogrou= ps.com</a>></span>:<br><blockquote class=3D"gmail_quote" style=3D"margin= :0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <u></u> =20 <div style=3D"background-color:#fff"><span>=C2=A0</span> <br><div><br><div><div><div dir=3D"ltr"><div class=3D"gmail_extra"><div cla= ss=3D"gmail_quote"><span class=3D""><blockquote class=3D"gmail_quote" style= =3D"border-left:1px #ccc solid"><div style=3D"background-color:#fff"><div><= div><div><div dir=3D"ltr"><div>To put this in perspective: People in this p= roject are coming from a 4GL background using a tool with very limited set = of concepts/capabilities. The new development platform is JEE. Now they are= concerned that there will be chaotic code structures and want to limit thi= s by only allowing a defined set of building blocks and no classes that do = not conform to these building blocks. <br></div></div></div></div></div></d= iv></blockquote><div><br></div></span><div>I see this approach as being ver= y problematic. The DDD building block patterns are <i>not</i> intended to b= e a complete list of object types for domain modeling. They are a set of us= eful domain modeling patterns that can help get your domain complexity unde= r control by simplifying your domain model.</div><div><br></div><div>There = are other - better - ways to avoid chaotic code structures.</div><span clas= s=3D""></span><br></div></div></div></div></div></div></div></blockquote></= div></div></div></div> <!-- |**|begin egp html banner|**| --> <br> <br> <!-- |**|end egp html banner|**| --> <div width=3D"1" style=3D"color: white; clear: both;"/>__._,_.___</div> =20=20=20=20=20=20 =20=20 =20=20=20=20 <div id=3D"fromDMARC" style=3D"clear:both; margin-top: 10px;"> <hr style=3D"height:2px ; border-width:0; color:#E3E3E3; backgroun= d-color:#E3E3E3;"> Posted by: Niklas Mehner <[email protected]> <= hr style=3D"height:2px ; border-width:0; color:#E3E3E3; background-color:#E= 3E3E3;"> </div> <!-- Start Recommendations --> <!-- End Recommendations --> <!-- |**|begin egp html banner|**| --> <img src=3D"http://geo.yahoo.com/serv?s=3D97476590/grpId=3D8116923/grpspI= d=3D1705007181/msgId=3D24794/stime=3D1471232970" width=3D"1" height=3D"1"> = <br> <!-- |**|end egp html banner|**| --> =20=20 <!-- |**|begin egp html banner|**| --> <br> =20=20=20 =20=20=20=20=20 =20 <!-- |**|begin egp html banner|**| --> <div id=3D"ygrp-vital" style=3D"background-color: #f2f2f2; font-fam= ily: Verdana; font-size: 10px; margin-bottom: 10px; padding: 10px;"> <span id=3D"vithd" style=3D"font-weight: bold; color: #333; text-tr= ansform: uppercase; "><a href=3D"https://groups.yahoo.com/neo/groups/domain= drivendesign/info;_ylc=3DX3oDMTJlN2NlbWh0BF9TAzk3MzU5NzE0BGdycElkAzgxMTY5Mj= MEZ3Jwc3BJZAMxNzA1MDA3MTgxBHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQ3MTIzMjk2OQ--"= style=3D"text-decoration: none;">Visit Your Group</a></span> <ul style=3D"list-style-type: none; margin: 0; padding: 0; display: in= line;"> <li style=3D"border-right: 1px solid #000; font-weight: 700; di= splay: inline; padding: 0 5px; margin-left: 0;"> <span class=3D"cat"><a href=3D"https://groups.yahoo.com/neo/groups/do= maindrivendesign/members/all;_ylc=3DX3oDMTJmcW5tbnFlBF9TAzk3MzU5NzE0BGdycEl= kAzgxMTY5MjMEZ3Jwc3BJZAMxNzA1MDA3MTgxBHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzE0Nz= EyMzI5Njk-" style=3D"text-decoration: none;">New Members</a></span> <span class=3D"ct" style=3D"color: #ff7900;">2</span> </li> </ul> </div> <div id=3D"ft" style=3D"font-family: Arial; font-size: 11px; margin-top: 5p= x; padding: 0 2px 0 0; clear: both;"> <a href=3D"https://groups.yahoo.com/neo;_ylc=3DX3oDMTJkNHRrcjVuBF9TAzk3ND= c2NTkwBGdycElkAzgxMTY5MjMEZ3Jwc3BJZAMxNzA1MDA3MTgxBHNlYwNmdHIEc2xrA2dmcARzd= GltZQMxNDcxMjMyOTcw" style=3D"float: left;"><img src=3D"http://l.yimg.com/r= u/static/images/yg/img/email/new_logo/logo-groups-137x15.png" height=3D"15"= width=3D"137" alt=3D"Yahoo! 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