18 Feb
2014
18 Feb
'14
3:24 p.m.
Hi all,
I'm adding some features on top of my existing Magritte metamodel
descriptions, and I found some of the features I want to add to be already
there (or so it seems, QCQuery for instance), but I don't understand them
just by looking at the code.
Does anybody have a video or something other than the Dry-Ing Magritte
slides? (http://www.slideshare.net/esug/drying-magritte)
I don't want to build what's already there or might be extended... without
exceeding my customer deadlines. :)
Regards!
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18 Feb
18 Feb
4:56 p.m.
Hi Esteban,
I am sorry there is no more reading material then the video. But you can ask questions and
I will do my best to answer them. And add the answers somewhere in the documentation.
Because I more or less have the same problem: I want to expose the work I have done, so
people can extend on it. But I do not always have the time to properly document them.
I have made it possible to search the model based on the queries, and build some
components with them. If you install QCMagritte using the configuration, there is also a
demo that shows part of the functionality QCMagritte adds. I do not believe I have added
the search component in the demo yet … I have to check. What exactly are you looking for?
Regards,
Diego
On 18 Feb 2014, at 15:24, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote:
Hi all,
I'm adding some features on top of my existing Magritte metamodel
descriptions, and I found some of the features I want to add to be already
there (or so it seems, QCQuery for instance), but I don't understand them
just by looking at the code.
Does anybody have a video or something other than the Dry-Ing Magritte
slides? (http://www.slideshare.net/esug/drying-magritte)
I don't want to build what's already there or might be extended... without
exceeding my customer deadlines. :)
Regards!
--
View this message in context:
http://forum.world.st/Deep-QCMagritte-tutorial-tp4744612.html
Sent from the Magritte, Pier and Related Tools mailing list archive at Nabble.com.
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7:16 p.m.
1. What I have today is a result set (a collection of my domain objects)
which can be managed independently of what objects I have (it is, different
domain classes). To solve this I use Magritte Descriptions to define my
metamodel.
2. What I need is a way to add "behavior" to such data set, like filtering
(elements whitin certain group, state, etc.), value grouping/aggregation...,
sorting, custom columns, etc.
It is... basic result set management plus pivot table behavior...
3. What I would like is to have the query described somehow, in order to
translate it to a GLORP query to avoid loading a whole table to fetch only a
few rows. These days I can do that, but I want to avoid it.
We did this in my previous job on top of our own metamodel system (very
alike to Magritte), and I'm willing to code it again on top of Magritte if
needed. But as always... we need to deliver, and the time is scarce...
Regards!
--
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19 Feb
19 Feb
7:59 p.m.
Hi Esteban,
The idea of a QCQuery is to search in a dataset, arbitrarily how it is organised. It does
so by recursively visiting the magritte description of the objects, and has protection
against loops. For instance:
if you have parties in your model, and each party has addresses (telephone, email, post):
you can pass your model to your query and it searches through all parties and addresses to
find things that match.
The query itself is build up in 3 different parts:
The select. This can be a simple string (the string value of any field matches: ’06410’, a
conditional string (‘name’ = *’die’*), or a complex query that is an and/or of possible
selects. The select could easily be extended with extra things, with the only requirement
that they implement the “#matches:” (or “matches:description: if more control is needed).
The target and search path. That together determine the part of the model that is
searched.
The results description. The result set itself generates a magritte description. When
nothing specified in the results description it returns the magritte description of the
common class of the results. You can add an extra filter here, that you only want results
of a certain type, or add columns to give additional calculated fields in the results.
My query does not sort and/or group and has no translation into SQL. So I have the feeling
there is a mismatch here. As my need was to search the objects that are loaded in the
image, and allow the user to search through them. So it does have a string representation
the is human readable.
Regards,
Diego
1. What I have today is a result set (a collection of
my domain objects)
which can be managed independently of what objects I have (it is, different
domain classes). To solve this I use Magritte Descriptions to define my
metamodel.
2. What I need is a way to add "behavior" to such data set, like filtering
(elements whitin certain group, state, etc.), value grouping/aggregation...,
sorting, custom columns, etc.
It is... basic result set management plus pivot table behavior...
3. What I would like is to have the query described somehow, in order to
translate it to a GLORP query to avoid loading a whole table to fetch only a
few rows. These days I can do that, but I want to avoid it.
We did this in my previous job on top of our own metamodel system (very
alike to Magritte), and I'm willing to code it again on top of Magritte if
needed. But as always... we need to deliver, and the time is scarce...
Regards!
--
View this message in context:
http://forum.world.st/Deep-QCMagritte-tutorial-tp4744612p4744695.html
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_______________________________________________
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28 Feb
28 Feb
4:31 p.m.
Diego:
In the ConfigurationOfQCMagritte some class dependencies are missing:
QCQueryRunVisitor and QCQueryRunVisitor. Which are in the package
QC-Magritte-Visitor.
Somehow it looks like what I want to implement. But I still can't get
my head around as to adapt/extend it to my own needs.
Regards,
Esteban A. Maringolo
2014-02-19 16:01 GMT-03:00 DiegoLont [via Smalltalk]
<ml-node+s1294792n4744943h61(a)n4.nabble.com>om>:
Hi Esteban,
The idea of a QCQuery is to search in a dataset, arbitrarily how it is
organised. It does so by recursively visiting the magritte description of
the objects, and has protection against loops. For instance:
if you have parties in your model, and each party has addresses
(telephone, email, post): you can pass your model to your query and it
searches through all parties and addresses to find things that match.
The query itself is build up in 3 different parts:
The select. This can be a simple string (the string value of any field
matches: '06410', a conditional string ('name' = *'die'*), or a
complex
query that is an and/or of possible selects. The select could easily be
extended with extra things, with the only requirement that they implement
the "#matches:" (or "matches:description: if more control is needed).
The target and search path. That together determine the part of the model
that is searched.
The results description. The result set itself generates a magritte
description. When nothing specified in the results description it returns
the magritte description of the common class of the results. You can add an
extra filter here, that you only want results of a certain type, or add
columns to give additional calculated fields in the results.
My query does not sort and/or group and has no translation into SQL. So I
have the feeling there is a mismatch here. As my need was to search the
objects that are loaded in the image, and allow the user to search through
them. So it does have a string representation the is human readable.
Regards,
Diego
--
View this message in context:
http://forum.world.st/Deep-QCMagritte-tutorial-tp4744612p4747006.html
Sent from the Magritte, Pier and Related Tools mailing list archive at Nabble.com.
1. What I have today is a result set (a
collection of my domain objects)
which can be managed independently of what objects I have (it is,
different
domain classes). To solve this I use Magritte Descriptions to define my
metamodel.
2. What I need is a way to add "behavior" to such data set, like filtering
(elements whitin certain group, state, etc.), value
grouping/aggregation...,
sorting, custom columns, etc.
It is... basic result set management plus pivot table behavior...
3. What I would like is to have the query described somehow, in order to
translate it to a GLORP query to avoid loading a whole table to fetch only
a
few rows. These days I can do that, but I want to avoid it.
We did this in my previous job on top of our own metamodel system (very
alike to Magritte), and I'm willing to code it again on top of Magritte if
needed. But as always... we need to deliver, and the time is scarce...
Regards!
--
View this message in context:
http://forum.world.st/Deep-QCMagritte-tutorial-tp4744612p4744695.html
Sent from the Magritte, Pier and Related Tools mailing list archive at
Nabble.com.
_______________________________________________
Magritte, Pier and Related Tools ...
https://www.iam.unibe.ch/mailman/listinfo/smallwiki
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4 comments
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participants (2)
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Diego Lont -
Esteban A. Maringolo