[postgis-users] Mezogis is closing when using a database

[alex bodnaru]

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hello daniela,

i have made a few changes to stock mezogis-0.1.5 to support current
psycopg2. now i have no problem with your data on my debian machine.

the working mezogis has been sent to you privately, and the patch has
been sent to frederic back too.

i would be interested if it works for you now.

good luck,

alex

Daniela Stärke wrote:
> Hi Alex,
> 
> wow I probably found a bug, I am amazed. 
> 
> OK I made a new database which some geometrical form in it and tried to  start it with mezzogis. But as expected I received the same messages as before.
> 
> In the appendix of this email you find the dump-data of my database. It is just a simple one.
> 
> Here are the neccessary information to start the database:
> 
> the user: testuser ,
> password: das ,
> database: neutest ,
> port: 5340
> 
> thanks for your help
> 
> Daniela
>  
>> daniela,
>>
>> it really seems to be a bug in mezogis, and you quite clearly described
>> it.
>>
>> somehow, the name of a column gets being used in an incorrect way.
>>
>> i would take a look at the code later, and a subset of your data would
>> be necessary.
>>
>> cheers,
>>
>> alex
>>
>> Daniela Stärke wrote:
>>> Hi alex,
>>>
>>> there is a connection to the db available. I also had reinstalled
>> Mezogis at the beginning of this week. On my linux I have this versions of gtk
>> 1.2.10 as well as gtk2 2.10.6.
>>> loading the db is without problems, but when I want to start it, whether
>> with doubleclick, the SQL-commant "SELECT * FROM...." i get first this:
>>>
>>> /usr/local/lib/python2.5/site-packages/mezoGISlib/_canvas.py:524:
>> GtkWarning: Using Cairo rendering requires the drawable argument to
>>> have a specified colormap. All windows have a colormap,
>>> however, pixmaps only have colormap by default if they
>>> were created with a non-NULL window argument. Otherwise
>>> a colormap must be set on them with gdk_drawable_set_colormap
>>>   self.ctx = self.pixmap.cairo_create()
>>>
>>>
>>>
>>> and then the part, which was in my last post.
>>>
>>>
>>> But I found out, that when I select not all columns of the db, the
>> colums are printed.
>>> Just when I want to use the column "color_map" I receive the message
>> above.
>>>
>>> I also checked the source code, but I don't know, what to do with it, or
>> in it.
>>>
>>> Do you have any idea???
>>>
>>> bye
>>>
>>> Daniela
>>>
>>>
>>>
>>>
>>>>> hi daniela,
>>>> this also shows an incompatibility of mezogis with your installed gtk.
>>>>
>>>> should you think it's helpful, i have reinstalled latest mezogis and
>> i'd
>>>> give a try to connect toyour db, if possible.
>>>>
>>>> alex
>>>>
>>>> Daniela Stärke wrote:
>>>>> Thank you alex for your help.
>>>>>
>>>>> I commented the part of the cursor collection out, and now MezoGIS is
>>>> not closing when opening the DB (:D:D:D), but now I receive the
>> following
>>>> messages  (:(:(:()    :
>>>>> Traceback (most recent call last):
>>>>>   File
>> "/usr/local/lib/python2.5/site-packages/mezoGISlib/_pane_db.py",
>>>> line 522, in __on_doubleclick
>>>>>     ##self.pgbutler.runQuery('SELECT * FROM %s'%table.getSQL())
>>>>>   File
>> "/usr/local/lib/python2.5/site-packages/mezoGISlib/_guicore.py",
>>>> line 397, in runQuery
>>>>>     #self.showResults(cursor, query, layer, resultset, tablelist)
>>>>>   File
>> "/usr/local/lib/python2.5/site-packages/mezoGISlib/_guicore.py",
>>>> line 431, in showResults
>>>>>     #mapview = openMapView(layer.resultset)
>>>>>   File
>>>> "/usr/local/lib/python2.5/site-packages/mezoGISlib/_guiwindows.py",
>> line 33, in openMapView
>>>>>     #m = MapWindow(resultset)
>>>>>   File
>>>> "/usr/local/lib/python2.5/site-packages/mezoGISlib/_guiwindows.py",
>> line 139, in __init__
>>>>>     #self.canvas = MapCanvas()
>>>>>   File "/usr/local/lib/python2.5/site-packages/mezoGISlib/_canvas.py",
>>>> line 86, in __init__
>>>>>     #self.__createNewCanvas()
>>>>>   File "/usr/local/lib/python2.5/site-packages/mezoGISlib/_canvas.py",
>>>> line 524, in __createNewCanvas
>>>>>     #self.ctx = self.pixmap.cairo_create()
>>>>> cairo.Error: NULL pointer
>>>>>
>>>>> I also tried the same strategy like before, but this will not really
>>>> work, because I get then the same massage.
>>>>> So has anyone any idea???
>>>>>
>>>>> Thanks in advance.
>>>>>
>>>>> Daniela
>>>>>
>>>>>> hi daniela,
>>>>>>
>>>>>> i have previously played with mezogis a little.
>>>>>>
>>>>>> it might be, that under the condition of your work mezogis tried to
>>>> open
>>>>>>  a non existing cursor.
>>>>>>
>>>>>> as a start point, i'd remove the calling code to the cursor
>> collection
>>>>>> and inquire further.
>>>>>>
>>>>>> hth,
>>>>>>
>>>>>> alex
>>>>>>
>>>>>> Daniela Stärke wrote:
>>>>>>> Thanks for the information. I downloaded the newest version of wxGTK
>>>>>> (2.8.4), but the problem is still there.
>>>>>>> After trying to open a geo-database with MezoGIS the program is
>> still
>>>>>> closing and on the shell there is this,
>>>>>>> /usr/local/lib/python2.5/site-packages/mezoGISlib/_guiwindows.py:80:
>>>>>> GtkWarning: gdk_colormap_get_screen: assertion `GDK_IS_COLORMAP
>> (cmap)'
>>>> failed
>>>>>>>   CursorCollection.xpm["hand-open"])
>>>>>>>
>>>>>>> two times printed.
>>>>>>>
>>>>>>> I had the idea, that I could look in the source code of
>> _guiwindows.py
>>>>>> to see if there might be something missing or so, but in line 80
>> there
>>>> is no
>>>>>> 'gdk_colormap_get_screen' or 'GDK_IS_COLORMAP' written. Just the
>>>>>> CursorCollection.
>>>>>>> Is it possible, that the method 'gdk_colormap_get_screen'is not jet
>>>>>> written???
>>>>>>> Because when I use the search-function of the vim-editor I receive
>> the
>>>>>> message, that there is no 'gdk_colormap_get_screen' or
>>>> 'GDK_IS_COLORMAP'
>>>>>>> I really need some help.
>>>>>>>
>>>>>>> Thank you in advance for your attention in this matter.
>>>>>>>
>>>>>>>
>>>>>>> Daniela
> 
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