Re: 2nd gen Io
Steve Dekorte <[email protected]> Fri, 14 Mar 2014 20:32:31 -0700
| Newsgroups | gmane.comp.lang.io |
|---|---|
| Message-ID | <[email protected]> |
--E-5JEZmcvyExTQ8lkDhXMGbSzJkdyrU5RN9LBFU Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Right the domain object is the top of the ownership hierarchy of the object= s beneath it, owns the only execution context that ever directly interacts = with those objects. Any message to an object in its domain is routed throug= h the domain object and put on its actor message queue for execution. Even = though the domain object itself is not the target, it will verify the autho= rity of the message and dispatch it to the appropriate target in its own ex= ecution context. > On Mar 13, 2014, at 9:33 AM, [email protected] wrote: >=20 >=20 >=20 > Sorry for the following dumb question :) >=20 > "Any object can become a domain ..." >=20 > In IO2, if I understand correctly, we have objects that represent executi= on > threads, these objects are called domains, and they "run" other objects (= those > that belong to them)? >=20 >=20 >=20 >=20 >=20 >=20 >=20 >=20 > Selon Steve Dekorte <[email protected]>: >=20 >>=20 >> I=C2=92d like to make the things that tend to be re-implemented in typic= al >> projects part of the language - security, persistence, concurrency, >> distribution and user interaction. All of these could be seen as mapping >> problems and their solution as adding explicit mapping boundaries. >>=20 >> The first idea (which was probably already done in Smalltalk in 1980s) i= s to >> add a pointer to each object in the system to it=C2=92s =C2=93owner=C2= =94 and have object >> ownership domains where the domain leader is an actor/process whose exec= ution >> thread is used for processing all messages sent to objects within it=C2= =92s >> domain. Any object can become a domain of the objects below it in the >> ownership graph. Domain boundaries are used to solve the problems of sec= urity >> (tracking and verifying authority to invoke behaviors), concurrency (avo= id >> unexpected state changes, closely associate execution with the state it = will >> be working on), distribution and persistence (boundaries determine the s= tate >> which needs to be persisted or moved). >>=20 >> Part of the persistence component is to support the indexing and lazy lo= ading >> of individual objects and standard representations that can be externall= y >> manipulated and returned and merged with an optimistic locking mechanism= . >>=20 >> The user interaction part involves extending slots to have metadata and = a >> standard set of properties which are used for the interface mapping. >>=20 >> This would be a big project but hopefully there will be time in the futu= re to >> take a stab at it. >>=20 >> Sorry for the delay in responding, >> Steve >>=20 >>> On Feb 24, 2014, at 6:06 AM, [email protected] wrote: >>> Come on Steve, there are Io fans who wanna hear about it! Let us chat. >>>=20 >>> Selon Steve Dekorte <[email protected]>: >>>>=20 >>>>> On Feb 19, 2014, at 1:28 AM, [email protected] wrote: >>>>> Hi all, >>>>>=20 >>>>> When there's no matching slot, the "forward" slot is activated. >>>>>=20 >>>>> I have this idea about a "before" slot: >>>>>=20 >>>>> If "before" doesn't exist, everything works as usual. >>>>>=20 >>>>> If "before" exists, it is always activated (and it receives the messa= ge) >>>> before >>>>> the slot lookup. Then, it produces a message (possibly the same) whic= h >> will >>>> be >>>>> treated as usual. >>>>>=20 >>>>> This could be used to test whether the sender as the "right" to acces= s a >>>>> particular slot, for example. >>>>=20 >>>> Hi Julien, >>>>=20 >>>> I like the idea. On my list for a 2nd gen Io is some form of support f= or >>>> rights on all objects. >>>>=20 >>>>> Is there already a way to do this at user level? >>>>=20 >>>> You can get the same effect using a proxy to forward message to the re= al >>>> object. >>>> Io uses proxies for futures and supports turning all references of one >> object >>>> to another. >>>>=20 >>>>> Also, would anybody have a little constructive criticism about Io? >>>>=20 >>>> Always welcome! :) >>>>=20 >>>> Steve >>=20 >>=20 >>=20 >>=20 >>=20 >> ------------------------------------ >>=20 >> Yahoo Groups Links >=20 >=20 >=20 >=20 > ------------------------------------ >=20 > Yahoo Groups Links >=20 >=20 >=20 >=20 --E-5JEZmcvyExTQ8lkDhXMGbSzJkdyrU5RN9LBFU Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/htm= l4/strict.dtd"> <html> <head> </head> =20 <body style=3D"background-color: #fff;"> <span style=3D"display:none"> </span> <!--~-|**|PrettyHtmlStartT|**|-~--> <div id=3D"ygrp-mlmsg" style=3D"position:relative;"> <div id=3D"ygrp-msg" style=3D"z-index: 1;"> <!--~-|**|PrettyHtmlEndT|**|-~--> <div id=3D"ygrp-text" > =20=20=20=20=20=20 =20=20=20=20=20=20 <p><br> Right the domain object is the top of the ownership hierarchy of the object= s beneath it, owns the only execution context that ever directly interacts = with those objects. Any message to an object in its domain is routed throug= h the domain object and put on its actor message queue for execution. Even = though the domain object itself is not the target, it will verify the autho= rity of the message and dispatch it to the appropriate target in its own ex= ecution context.<br> <br> > On Mar 13, 2014, at 9:33 AM, [email protected] wrote:<br> > <br> > <br> > <br> > Sorry for the following dumb question :)<br> > <br> > "Any object can become a domain ..."<br> > <br> > In IO2, if I understand correctly, we have objects that represent exec= ution<br> > threads, these objects are called domains, and they "run" ot= her objects (those<br> > that belong to them)?<br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > Selon Steve Dekorte <[email protected]>:<br> > <br> >> <br> >> I=C2=92d like to make the things that tend to be re-implemented in= typical<br> >> projects part of the language - security, persistence, concurrency= ,<br> >> distribution and user interaction. All of these could be seen as m= apping<br> >> problems and their solution as adding explicit mapping boundaries.= <br> >> <br> >> The first idea (which was probably already done in Smalltalk in 19= 80s) is to<br> >> add a pointer to each object in the system to it=C2=92s =C2=93owne= r=C2=94 and have object<br> >> ownership domains where the domain leader is an actor/process whos= e execution<br> >> thread is used for processing all messages sent to objects within = it=C2=92s<br> >> domain. Any object can become a domain of the objects below it in = the<br> >> ownership graph. Domain boundaries are used to solve the problems = of security<br> >> (tracking and verifying authority to invoke behaviors), concurrenc= y (avoid<br> >> unexpected state changes, closely associate execution with the sta= te it will<br> >> be working on), distribution and persistence (boundaries determine= the state<br> >> which needs to be persisted or moved).<br> >> <br> >> Part of the persistence component is to support the indexing and l= azy loading<br> >> of individual objects and standard representations that can be ext= ernally<br> >> manipulated and returned and merged with an optimistic locking mec= hanism.<br> >> <br> >> The user interaction part involves extending slots to have metadat= a and a<br> >> standard set of properties which are used for the interface mappin= g.<br> >> <br> >> This would be a big project but hopefully there will be time in th= e future to<br> >> take a stab at it.<br> >> <br> >> Sorry for the delay in responding,<br> >> Steve<br> >> <br> >>> On Feb 24, 2014, at 6:06 AM, [email protected] wrote:<br> >>> Come on Steve, there are Io fans who wanna hear about it! Let = us chat.<br> >>> <br> >>> Selon Steve Dekorte <[email protected]>:<br> >>>> <br> >>>>> On Feb 19, 2014, at 1:28 AM, [email protected] wro= te:<br> >>>>> Hi all,<br> >>>>> <br> >>>>> When there's no matching slot, the "forward&q= uot; slot is activated.<br> >>>>> <br> >>>>> I have this idea about a "before" slot:<br> >>>>> <br> >>>>> If "before" doesn't exist, everything wo= rks as usual.<br> >>>>> <br> >>>>> If "before" exists, it is always activated (= and it receives the message)<br> >>>> before<br> >>>>> the slot lookup. Then, it produces a message (possibly= the same) which<br> >> will<br> >>>> be<br> >>>>> treated as usual.<br> >>>>> <br> >>>>> This could be used to test whether the sender as the &= quot;right" to access a<br> >>>>> particular slot, for example.<br> >>>> <br> >>>> Hi Julien,<br> >>>> <br> >>>> I like the idea. On my list for a 2nd gen Io is some form = of support for<br> >>>> rights on all objects.<br> >>>> <br> >>>>> Is there already a way to do this at user level?<br> >>>> <br> >>>> You can get the same effect using a proxy to forward messa= ge to the real<br> >>>> object.<br> >>>> Io uses proxies for futures and supports turning all refer= ences of one<br> >> object<br> >>>> to another.<br> >>>> <br> >>>>> Also, would anybody have a little constructive critici= sm about Io?<br> >>>> <br> >>>> Always welcome! :)<br> >>>> <br> >>>> Steve<br> >> <br> >> <br> >> <br> >> <br> >> <br> >> ------------------------------------<br> >> <br> >> Yahoo Groups Links<br> > <br> > <br> > <br> > <br> > ------------------------------------<br> > <br> > Yahoo Groups Links<br> > <br> > <br> > <br> > <br> <br> </p> </div> =20=20=20=20=20 <!--~-|**|PrettyHtmlStart|**|-~--> <div style=3D"color: #fff; height: 0;">__._,_.___</div> =20=20=20=20=20=20=20=20=20=20 =20=20 =20=20=20=20 <div style=3D"clear:both"> </div> <table cellspacing=3D4px style=3D"margin-top: 20px; margin-bottom: 10px= ;"> <tbody> <tr> <td style=3D"font-size: 12px; font-family: arial; font-weight: bo= ld; padding: 7px 5px 5px; color: #FFF; background-color: #F2F2F2; border: 1= px solid #EAEAEA " > <a style=3D"text-decoration: none; color: #2D50FD= " href=3D"https://groups.yahoo.com/group/iolanguage/post;_ylc=3DX3oDMTJxNHR= pY3F0BF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BG1zZ0lkAz= EzMzYxBHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTM5NDg1NDUyNA--?act=3Dreply&messageN= um=3D13361">Reply via web post</a> </td> <td style=3D"font-size: 12px; font-family: arial; padding: 7px 5p= x 5px; color: #FFF; background-color: #F2F2F2; border: 1px solid #EAEAEA; "= > <a href=3D"mailto:[email protected]?subject=3DRe%3A%20%5BIo%5D%= 202nd%20gen%20Io" style=3D"text-decoration: none; color: #2D50FD;"> Reply to sender </a>=20 </td> <td style=3D"font-size: 12px; font-family: arial; padding: 7px 5p= x 5px; color: #FFF; background-color: #F2F2F2; border: 1px solid #EAEAEA; "= > <a href=3D"mailto:[email protected]?subject=3DRe%3A%20= %5BIo%5D%202nd%20gen%20Io" style=3D"text-decoration: none; color: #2D50FD"> Reply to group </a>=20 </td> <td style=3D"font-size: 12px; font-family: arial; padding: 7px 5p= x 5px; color: #FFF; background-color: #F2F2F2; border: 1px solid #EAEAEA; "= > <a href=3D"https://groups.yahoo.com/group/iolanguage/post;_ylc= =3DX3oDMTJlMW9rc2Q4BF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2= NzY0BHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTM5NDg1NDUyNA--" style=3D"text-decorat= ion: none; color: #2D50FD">Start a New Topic</a> </td> <td style=3D"font-size: 12px; font-family: arial; padding: 7px 5p= x 5px; color: #2D50FD; background-color: #F2F2F2; border: 1px solid #EAEAEA= ; " > <a href=3D"https://groups.yahoo.com/group/iolan= guage/message/13345;_ylc=3DX3oDMTM2NmUycGljBF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0= NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BG1zZ0lkAzEzMzYxBHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWU= DMTM5NDg1NDUyNAR0cGNJZAMxMzM0NQ--" style=3D"text-decoration: none; color: #= 2D50FD;">Messages in this topic</a> (13) </td> </tr> </tbody> </table> =20=20=20=20=20=20=20=20 <!------- Start Nav Bar ------> <!-- |**|begin egp html banner|**| --> <!-- |**|end egp html banner|**| --> =20 <!-- |**|begin egp html banner|**| --> <div id=3D"ygrp-vital" style=3D"background-color: #f2f2f2; font-family: Ver= dana; font-size: 10px; margin-bottom: 10px; padding: 10px;"> <span id=3D"vithd" style=3D"font-weight: bold; color: #333; text-transf= orm: uppercase; "><a href=3D"https://groups.yahoo.com/group/iolanguage;_ylc= =3DX3oDMTJlMGExZzdyBF9TAzk3MzU5NzE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2= NzY0BHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTM5NDg1NDUyNA--" style=3D"text-decorat= ion: none;">Visit Your Group</a></span> <ul style=3D"list-style-type: none; margin: 0; padding: 0; display: in= line;"> </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/;_ylc=3DX3oDMTJkYWZiZTNyBF9TAzk3MzU5N= zE0BGdycElkAzY2Nzc0NzYEZ3Jwc3BJZAMxNzA1MDA2NzY0BHNlYwNmdHIEc2xrA2dmcARzdGlt= ZQMxMzk0ODU0NTI0" style=3D"float: left;"><img src=3D"http://l.yimg.com/ru/s= tatic/images/yg/img/email/new_logo/logo-groups-137x15.png" height=3D"15" wi= dth=3D"137" alt=3D"Yahoo! 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