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Posted to user@openmeetings.apache.org by Hamdi THABET <ha...@gmail.com> on 2012/05/06 14:23:43 UTC

Réf. : Logical architecture of OM 2.0

Hi all,
 
https://cwiki.apache
org/confluence/download/attachments/27844755/Application+Layer+Diagram
png?version=3&modificationDate=1335961536692
 
Is there a missing layer in this architecture ? It's not really 5 layers ?
http://4.bp.blogspot
com/_f4sMkQSDNLA/R9et7lp41pI/AAAAAAAAAF8/Be8czF_99rw/s400/5couches.png

Can someone tell me what's mean: "Daos/Impl" ?
I searched on it on Google. But what I need is more details: which
technology is used as Data Access Object (DAO) ?

 

 
 

RE: Choose Device window not appearing or appearing half hidden

Posted by George Kirkham <gk...@co2crc.com.au>.
Sebastian,

 

Which is the best way to obtain a new version of OpenMeetings?

 

Finding the latest build number from
"https://builds.apache.org/job/openmeetings/" and then downloading
either the source and compiling or the completed build, or alternatively
check out the source from the singlewebapp ?  My preference would be the
check out via svn.   

 

1)      wget
https://builds.apache.org/job/openmeetings/lastSuccessfulBuild/artifact/
singlewebapp/dist/apache-openmeetings-incubating-2.0.0.r1335834-08-05-20
12_2349-src.tar.gz

 

or 

2)      wget
https://builds.apache.org/job/openmeetings/lastSuccessfulBuild/artifact/
singlewebapp/dist/apache-openmeetings-incubating-2.0.0.r1335834-08-05-20
12_2349.tar.gz

 

or 

 

3)      svn checkout
https://svn.apache.org/repos/asf/incubator/openmeetings/trunk/singleweba
pp/

 

Thanks,

 

George Kirkham

 

IT Manager

Cooperative Research Centre For Greenhouse Gas Technologies (CO2CRC) 

NFF House, 14 - 16 Brisbane Avenue, Barton, ACT, 2600, Australia

T: (02) 6120 1600

F: (02) 6273 7181

E: gkirkham@co2crc.com.au, 

W: www.co2crc.com.au

 

 

From: seba.wagner@gmail.com [mailto:seba.wagner@gmail.com] 
Sent: Wednesday, 9 May 2012 10:32 PM
To: openmeetings-user@incubator.apache.org
Subject: Re: Choose Device window not appearing or appearing half hidden

 

Hallo George,

I will check this. It sounds strange to me how you have been able to
initialize the old version of the device settings as this UI does not
even exist anymore.

Sebastian

2012/5/9 George Kirkham <gk...@co2crc.com.au>

Hi,

 

Are others using build 68 having this issue?  

 

I have installed build 68 today and I am still getting the "Choose
device" dialog only partly appearing, the user can drag it down if they
know what it is.

 

On larger screen, this dialog is not even appearing, but the old style
dialog appears.

 

 

 

This choose device dialog does not appear on 1920 x 1024 screens.

 

 

 

On 1920x1080 screens, this is the dialog that appears.

 

 

 

Thanks,

 

George Kirkham

 




-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock <https://twitter.com/#%21/dead_lock> 
http://www.openmeetings.de <http://www.openmeetings.de> 
http://www.webbase-design.de <http://www.webbase-design.de> 
http://www.wagner-sebastian.com <http://www.wagner-sebastian.com> 
seba.wagner@gmail.com <ma...@gmail.com> 


Re: Choose Device window not appearing or appearing half hidden

Posted by "seba.wagner@gmail.com" <se...@gmail.com>.
Hi George,

the system backup and restore will not manipulate and code. It just imports
data into the database and copies uploaded documents/recordings/profile
images and saved whiteboards to the appropriate places.

I am not sure if I understood right about your potential concern about
files that are not imported correctly. However what you describe sounds
quite strange. Each file has a unique identifier. This identifier is a MD5
hash. The identifier does not change when you export or import files. And
not only the files but also the folder of each file is a MD5 hash.
That is why there is a checkbox to exclude those files so that advanced
users and admins can potentially copy them manually. The Backup does not
manipulate the file, just does copying and zipping.
So having files that previously were different documents is quite
impossible. However we can run some tests to make sure that no new issues
are involved.

Sebastian

2012/5/9 George Kirkham <gk...@co2crc.com.au>

> Sebastian,****
>
> ** **
>
> I believe I know why the “cannot exist in build 68 or later”, I think
> there is a bug in the “Backup and restore”, as I did a backup of my
> original prod server and imported the data with “uploaded files” into the
> new server, hoping that all the prod users would still have their files and
> data.   However when I first downloaded and installed  build 68, I made  a
> copy (cp -R /usr/lib/red5 /usr/lib/red5.bk) and then I imported the backup
> from my prod OpenMeetings (I did this because by then I was even concerned
> that the backup/restore also restored some code).  After your email, I
> restored the backup version and tested, now I no longer get the old
> version’s “Choose devices”, so like you say, it “cannot exist in build 68
> or later”.  And it does not, but the backup and restore is restoring some
> code/runtime files as well.****
>
> ** **
>
> Another potential bug is that  not all the uploaded files seemed to upload
> and be correctly registered in the database, as when a user logged in,
> sometimes files were found in their rooms, but sometimes the link in the
> room existed but the file did not, and then sometimes the link in the room
> did not exist, and sometimes the link in the room went to the wrong file.
> ****
>
> ** **
>
> ****
>
> Thanks,****
>
> ** **
>
> George Kirkham****
>
> ** **
>
> IT Manager****
>
> Cooperative Research Centre For Greenhouse Gas Technologies (CO2CRC) ****
>
> NFF House, 14 - 16 Brisbane Avenue, Barton, ACT, 2600, Australia****
>
> T: (02) 6120 1600****
>
> F: (02) 6273 7181****
>
> E: gkirkham@co2crc.com.au, ****
>
> W: www.co2crc.com.au****
>
> ** **
>
> ** **
>
> *From:* seba.wagner@gmail.com [mailto:seba.wagner@gmail.com]
> *Sent:* Thursday, 10 May 2012 4:12 AM
>
> *To:* openmeetings-user@incubator.apache.org
> *Subject:* Re: Choose Device window not appearing or appearing half hidden
> ****
>
> ** **
>
> Hi George,
>
>
> for the device settings and its not really working checkbox "do not ask
> again" I have committed a patch in:
> https://svn.apache.org/viewvc?view=revision&revision=1336321
>
> The problem with your screen resolution 1920x1080:
> Please make sure you did not mix up some URL, versions or missed to flush
> your browser cache. If checked the sources and the screenshot that you have
> given cannot exist in build 68 or later.
>
> Sebastian****
>
> 2012/5/9 seba.wagner@gmail.com <se...@gmail.com>****
>
> Hallo George,
>
> I will check this. It sounds strange to me how you have been able to
> initialize the old version of the device settings as this UI does not even
> exist anymore.
>
> Sebastian****
>
> ** **
>
> 2012/5/9 George Kirkham <gk...@co2crc.com.au>****
>
> Hi,****
>
>  ****
>
> Are others using build 68 having this issue?  ****
>
>  ****
>
> I have installed build 68 today and I am still getting the “Choose device”
> dialog only partly appearing, the user can drag it down if they know what
> it is.****
>
>  ****
>
> On larger screen, this dialog is not even appearing, but the old style
> dialog appears.****
>
>  ****
>
> ****
>
>  ****
>
> This choose device dialog does not appear on 1920 x 1024 screens.****
>
>  ****
>
> ****
>
>  ****
>
> On 1920x1080 screens, this is the dialog that appears.****
>
>  ****
>
> ****
>
>  ****
>
> Thanks,****
>
>  ****
>
> George Kirkham****
>
>  ****
>
>
>
> ****
>
> --
> Sebastian Wagner
> https://twitter.com/#!/dead_lock
> http://www.openmeetings.de
> http://www.webbase-design.de
> http://www.wagner-sebastian.com
> seba.wagner@gmail.com****
>
>
>
>
> --
> Sebastian Wagner
> https://twitter.com/#!/dead_lock
> http://www.openmeetings.de
> http://www.webbase-design.de
> http://www.wagner-sebastian.com
> seba.wagner@gmail.com****
>



-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock
http://www.openmeetings.de
http://www.webbase-design.de
http://www.wagner-sebastian.com
seba.wagner@gmail.com

browser cache caused issue RE: Choose Device window not appearing or appearing half hidden

Posted by George Kirkham <gk...@co2crc.com.au>.
Sebastian,

 

The problems I was having was related to the browser cache as you said.

 

I ran a WinDiff on the clean build and against the clean build with data
and files restored from the prod server, and WinDiff found it was only
the log files and "/upload/files" that were different.

 

Apologies, I had not known that  browsers could cache flash.

 

Thanks,

 

George Kirkham

 

IT Manager

Cooperative Research Centre For Greenhouse Gas Technologies (CO2CRC) 

NFF House, 14 - 16 Brisbane Avenue, Barton, ACT, 2600, Australia

T: (02) 6120 1600

F: (02) 6273 7181

E: gkirkham@co2crc.com.au, 

W: www.co2crc.com.au

 

 

From: George Kirkham [mailto:gkirkham@co2crc.com.au] 
Sent: Thursday, 10 May 2012 4:57 AM
To: openmeetings-user@incubator.apache.org
Subject: RE: Choose Device window not appearing or appearing half hidden

 

Sebastian,

 

I believe I know why the "cannot exist in build 68 or later", I think
there is a bug in the "Backup and restore", as I did a backup of my
original prod server and imported the data with "uploaded files" into
the new server, hoping that all the prod users would still have their
files and data.   However when I first downloaded and installed  build
68, I made  a copy (cp -R /usr/lib/red5 /usr/lib/red5.bk) and then I
imported the backup from my prod OpenMeetings (I did this because by
then I was even concerned that the backup/restore also restored some
code).  After your email, I restored the backup version and tested, now
I no longer get the old version's "Choose devices", so like you say, it
"cannot exist in build 68 or later".  And it does not, but the backup
and restore is restoring some code/runtime files as well.

 

Another potential bug is that  not all the uploaded files seemed to
upload and be correctly registered in the database, as when a user
logged in, sometimes files were found in their rooms, but sometimes the
link in the room existed but the file did not, and then sometimes the
link in the room did not exist, and sometimes the link in the room went
to the wrong file.  

 

 

Thanks,

 

George Kirkham

 

IT Manager

Cooperative Research Centre For Greenhouse Gas Technologies (CO2CRC) 

NFF House, 14 - 16 Brisbane Avenue, Barton, ACT, 2600, Australia

T: (02) 6120 1600

F: (02) 6273 7181

E: gkirkham@co2crc.com.au, 

W: www.co2crc.com.au

 

 

From: seba.wagner@gmail.com [mailto:seba.wagner@gmail.com] 
Sent: Thursday, 10 May 2012 4:12 AM
To: openmeetings-user@incubator.apache.org
Subject: Re: Choose Device window not appearing or appearing half hidden

 

Hi George,

for the device settings and its not really working checkbox "do not ask
again" I have committed a patch in:
https://svn.apache.org/viewvc?view=revision&revision=1336321

The problem with your screen resolution 1920x1080:
Please make sure you did not mix up some URL, versions or missed to
flush your browser cache. If checked the sources and the screenshot that
you have given cannot exist in build 68 or later.

Sebastian

2012/5/9 seba.wagner@gmail.com <se...@gmail.com>

Hallo George,

I will check this. It sounds strange to me how you have been able to
initialize the old version of the device settings as this UI does not
even exist anymore.

Sebastian

 

2012/5/9 George Kirkham <gk...@co2crc.com.au>

Hi,

 

Are others using build 68 having this issue?  

 

I have installed build 68 today and I am still getting the "Choose
device" dialog only partly appearing, the user can drag it down if they
know what it is.

 

On larger screen, this dialog is not even appearing, but the old style
dialog appears.

 

 

 

This choose device dialog does not appear on 1920 x 1024 screens.

 

 

 

On 1920x1080 screens, this is the dialog that appears.

 

 

 

Thanks,

 

George Kirkham

 





-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock <https://twitter.com/#%21/dead_lock> 
http://www.openmeetings.de <http://www.openmeetings.de> 
http://www.webbase-design.de <http://www.webbase-design.de> 
http://www.wagner-sebastian.com <http://www.wagner-sebastian.com> 
seba.wagner@gmail.com <ma...@gmail.com> 




-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock <https://twitter.com/#%21/dead_lock> 
http://www.openmeetings.de <http://www.openmeetings.de> 
http://www.webbase-design.de <http://www.webbase-design.de> 
http://www.wagner-sebastian.com <http://www.wagner-sebastian.com> 
seba.wagner@gmail.com <ma...@gmail.com> 


RE: Choose Device window not appearing or appearing half hidden

Posted by George Kirkham <gk...@co2crc.com.au>.
Sebastian,

 

I believe I know why the "cannot exist in build 68 or later", I think
there is a bug in the "Backup and restore", as I did a backup of my
original prod server and imported the data with "uploaded files" into
the new server, hoping that all the prod users would still have their
files and data.   However when I first downloaded and installed  build
68, I made  a copy (cp -R /usr/lib/red5 /usr/lib/red5.bk) and then I
imported the backup from my prod OpenMeetings (I did this because by
then I was even concerned that the backup/restore also restored some
code).  After your email, I restored the backup version and tested, now
I no longer get the old version's "Choose devices", so like you say, it
"cannot exist in build 68 or later".  And it does not, but the backup
and restore is restoring some code/runtime files as well.

 

Another potential bug is that  not all the uploaded files seemed to
upload and be correctly registered in the database, as when a user
logged in, sometimes files were found in their rooms, but sometimes the
link in the room existed but the file did not, and then sometimes the
link in the room did not exist, and sometimes the link in the room went
to the wrong file.  

 

 

Thanks,

 

George Kirkham

 

IT Manager

Cooperative Research Centre For Greenhouse Gas Technologies (CO2CRC) 

NFF House, 14 - 16 Brisbane Avenue, Barton, ACT, 2600, Australia

T: (02) 6120 1600

F: (02) 6273 7181

E: gkirkham@co2crc.com.au, 

W: www.co2crc.com.au

 

 

From: seba.wagner@gmail.com [mailto:seba.wagner@gmail.com] 
Sent: Thursday, 10 May 2012 4:12 AM
To: openmeetings-user@incubator.apache.org
Subject: Re: Choose Device window not appearing or appearing half hidden

 

Hi George,

for the device settings and its not really working checkbox "do not ask
again" I have committed a patch in:
https://svn.apache.org/viewvc?view=revision&revision=1336321

The problem with your screen resolution 1920x1080:
Please make sure you did not mix up some URL, versions or missed to
flush your browser cache. If checked the sources and the screenshot that
you have given cannot exist in build 68 or later.

Sebastian

2012/5/9 seba.wagner@gmail.com <se...@gmail.com>

Hallo George,

I will check this. It sounds strange to me how you have been able to
initialize the old version of the device settings as this UI does not
even exist anymore.

Sebastian

 

2012/5/9 George Kirkham <gk...@co2crc.com.au>

Hi,

 

Are others using build 68 having this issue?  

 

I have installed build 68 today and I am still getting the "Choose
device" dialog only partly appearing, the user can drag it down if they
know what it is.

 

On larger screen, this dialog is not even appearing, but the old style
dialog appears.

 

 

 

This choose device dialog does not appear on 1920 x 1024 screens.

 

 

 

On 1920x1080 screens, this is the dialog that appears.

 

 

 

Thanks,

 

George Kirkham

 





-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock <https://twitter.com/#%21/dead_lock> 
http://www.openmeetings.de <http://www.openmeetings.de> 
http://www.webbase-design.de <http://www.webbase-design.de> 
http://www.wagner-sebastian.com <http://www.wagner-sebastian.com> 
seba.wagner@gmail.com <ma...@gmail.com> 




-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock <https://twitter.com/#%21/dead_lock> 
http://www.openmeetings.de <http://www.openmeetings.de> 
http://www.webbase-design.de <http://www.webbase-design.de> 
http://www.wagner-sebastian.com <http://www.wagner-sebastian.com> 
seba.wagner@gmail.com <ma...@gmail.com> 


Re: Choose Device window not appearing or appearing half hidden

Posted by "seba.wagner@gmail.com" <se...@gmail.com>.
Hi George,

for the device settings and its not really working checkbox "do not ask
again" I have committed a patch in:
https://svn.apache.org/viewvc?view=revision&revision=1336321

The problem with your screen resolution 1920x1080:
Please make sure you did not mix up some URL, versions or missed to flush
your browser cache. If checked the sources and the screenshot that you have
given cannot exist in build 68 or later.

Sebastian

2012/5/9 seba.wagner@gmail.com <se...@gmail.com>

> Hallo George,
>
> I will check this. It sounds strange to me how you have been able to
> initialize the old version of the device settings as this UI does not even
> exist anymore.
>
> Sebastian
>
>
> 2012/5/9 George Kirkham <gk...@co2crc.com.au>
>
>> Hi,****
>>
>> ** **
>>
>> Are others using build 68 having this issue?  ****
>>
>> ** **
>>
>> I have installed build 68 today and I am still getting the “Choose
>> device” dialog only partly appearing, the user can drag it down if they
>> know what it is.****
>>
>> ** **
>>
>> On larger screen, this dialog is not even appearing, but the old style
>> dialog appears.****
>>
>> ** **
>>
>> ****
>>
>> ** **
>>
>> This choose device dialog does not appear on 1920 x 1024 screens.****
>>
>> ** **
>>
>> ****
>>
>> ** **
>>
>> On 1920x1080 screens, this is the dialog that appears.****
>>
>> ** **
>>
>> ****
>>
>> ** **
>>
>> Thanks,****
>>
>> ** **
>>
>> George Kirkham****
>>
>> ** **
>>
>
>
>
> --
> Sebastian Wagner
> https://twitter.com/#!/dead_lock
> http://www.openmeetings.de
> http://www.webbase-design.de
> http://www.wagner-sebastian.com
> seba.wagner@gmail.com
>



-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock
http://www.openmeetings.de
http://www.webbase-design.de
http://www.wagner-sebastian.com
seba.wagner@gmail.com

Re: Choose Device window not appearing or appearing half hidden

Posted by "seba.wagner@gmail.com" <se...@gmail.com>.
Hallo George,

I will check this. It sounds strange to me how you have been able to
initialize the old version of the device settings as this UI does not even
exist anymore.

Sebastian

2012/5/9 George Kirkham <gk...@co2crc.com.au>

> Hi,****
>
> ** **
>
> Are others using build 68 having this issue?  ****
>
> ** **
>
> I have installed build 68 today and I am still getting the “Choose device”
> dialog only partly appearing, the user can drag it down if they know what
> it is.****
>
> ** **
>
> On larger screen, this dialog is not even appearing, but the old style
> dialog appears.****
>
> ** **
>
> ****
>
> ** **
>
> This choose device dialog does not appear on 1920 x 1024 screens.****
>
> ** **
>
> ****
>
> ** **
>
> On 1920x1080 screens, this is the dialog that appears.****
>
> ** **
>
> ****
>
> ** **
>
> Thanks,****
>
> ** **
>
> George Kirkham****
>
> ** **
>



-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock
http://www.openmeetings.de
http://www.webbase-design.de
http://www.wagner-sebastian.com
seba.wagner@gmail.com

Choose Device window not appearing or appearing half hidden

Posted by George Kirkham <gk...@co2crc.com.au>.
Hi,

 

Are others using build 68 having this issue?  

 

I have installed build 68 today and I am still getting the "Choose
device" dialog only partly appearing, the user can drag it down if they
know what it is.

 

On larger screen, this dialog is not even appearing, but the old style
dialog appears.

 

 

 

This choose device dialog does not appear on 1920 x 1024 screens.

 

 

 

On 1920x1080 screens, this is the dialog that appears.

 

 

 

Thanks,

 

George Kirkham

 


Re: Réf. : Re: Réf. : Re: Réf. : Logical architecture of OM 2.0

Posted by "seba.wagner@gmail.com" <se...@gmail.com>.
I have slightly modified the diagram.
However I don't think that there are layers missing.
There is no strict rule about the layers available in that diagram.

If you lookup at Google there are thousands of different diagrams that
claim to be "Application Layered Diagram" while each one is different and
has its own layers:
https://www.google.de/search?q=Layered+Application+diagram&oe=utf-8&rls=org.mozilla:de:official&client=firefox-a&um=1&ie=UTF-8&hl=de&tbm=isch&source=og&sa=N&tab=wi&ei=1syrT-7QGYjBswbKkMHxBA&biw=1046&bih=634&sei=2syrT6iOC47otQa-29HRBQ

(Except those ones that describe the OSI model of course)

Sebastian

2012/5/9 Hamdi THABET <ha...@gmail.com>

>     I think that there is two missing layers:
> 1) The Business Layer (*couche métier in *French) called also BOL (BusinnessObjects
> Layer).
> 2) The BLL (Business Logic Layer) called also "the domain layer".
>
>
>
>
>  *Hamdi THABET
> *
> *-------Message original-------*
>
>  *De :* seba.wagner@gmail.com
> *Date :* 09/05/2012 12:16:28
> *A :* openmeetings-user@incubator.apache.org
> *Sujet :* Re: Réf. : Re: Réf. : Logical architecture of OM 2.0
>
> What layer do you think is missing?
>
>
> --
> Sebastian Wagner
> https://twitter.com/#!/dead_lock
> http://www.openmeetings.de
> http://www.webbase-design.de
> http://www.wagner-sebastian.com
> seba.wagner@gmail.com
>
>



-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock
http://www.openmeetings.de
http://www.webbase-design.de
http://www.wagner-sebastian.com
seba.wagner@gmail.com

Réf. : Re: Réf. : Re: Réf. : Logical architecture of OM 2.0

Posted by Hamdi THABET <ha...@gmail.com>.
I think that there is two missing layers:
1) The Business Layer (couche métier in French) called also BOL
(BusinnessObjects Layer). 
2) The BLL (Business Logic Layer) called also "the domain layer".
 
 
 
 
Hamdi THABET

-------Message original-------
 
De : seba.wagner@gmail.com
Date : 09/05/2012 12:16:28
A : openmeetings-user@incubator.apache.org
Sujet : Re: Réf. : Re: Réf. : Logical architecture of OM 2.0
 
What layer do you think is missing?



-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock
http://www.openmeetings.de
http://www.webbase-design.de
http://www.wagner-sebastian.com
seba.wagner@gmail.com

 

Re: Réf. : Re: Réf. : Logical architecture of OM 2.0

Posted by "seba.wagner@gmail.com" <se...@gmail.com>.
What layer do you think is missing?

2012/5/9 Hamdi THABET <ha...@gmail.com>

>    Hi Sebastian,
>
> "It is to argue if the layer "Dao/Impl" needs to be added or not." => it's
> not that at all
>
> My stage supervisor ask me : What's technology is used in OM as Data
> Access Objects ?
> Because DAO is the general name of the layer like presentation layer or
> service one.
> I learned about ORM and DAO from Google but I was unable to answer his
> question.
>
> I don't think that this kind of diagram has a fixed layout or number of
> layers. => it's good to have a full layered architecture to facilitate the extensibility
> and the maintainability of the application and to enlarge it's developers
> community.
>
>



-- 
Sebastian Wagner
https://twitter.com/#!/dead_lock
http://www.openmeetings.de
http://www.webbase-design.de
http://www.wagner-sebastian.com
seba.wagner@gmail.com

Réf. : Re: Réf. : Logical architecture of OM 2.0

Posted by Hamdi THABET <ha...@gmail.com>.
Hi Sebastian,

"It is to argue if the layer "Dao/Impl" needs to be added or not." => it's
not that at all

My stage supervisor ask me : What's technology is used in OM as Data Access
Objects ?
Because DAO is the general name of the layer like presentation layer or
service one.
I learned about ORM and DAO from Google but I was unable to answer his
question.  

I don't think that this kind of diagram has a fixed layout or number of
layers. => it's good to have a full layered architecture to facilitate the
extensibility and the maintainability of the application and to enlarge it's
developers community.  
 

Re: Réf. : Logical architecture of OM 2.0

Posted by "seba.wagner@gmail.com" <se...@gmail.com>.
Hi Hamdi,

it is to argue if the layer "Dao/Impl" needs to be added or not.
Dao means Data Access Objects and implements the logical strutucture to
access the data that is stored in the database.
Which layer do you think is missing? I don't think that this kind of
diagram has a fixed layout or number of layers. There could be potentially
even some more layers.

Sebastian

2012/5/6 Hamdi THABET <ha...@gmail.com>

>     Hi all,
>
>
> https://cwiki.apache.org/confluence/download/attachments/27844755/Application+Layer+Diagram.png?version=3&modificationDate=1335961536692
>
> Is there a missing layer in this architecture ? It's not really 5 layers ?
>
> http://4.bp.blogspot.com/_f4sMkQSDNLA/R9et7lp41pI/AAAAAAAAAF8/Be8czF_99rw/s400/5couches.png
>
> Can someone tell me what's mean: "Daos/Impl" ?
> I searched on it on Google. But what I need is more details: which
> technology is used as Data Access Object (DAO) ?
>
>
>
>
>
>



-- 
Sebastian Wagner
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