After some testing here it looks like a bug with the ODBC provider in general. I think there may be 2 defects here.
1) I'm getting a server error about the geometry property not being found when previewing the geometry. 2) I'm seeing the null computed values like you are when previewing the data. It looks like this won't work with and ODBC source. Dave -----Original Message----- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Matteo Sent: Friday, March 27, 2009 1:32 AM To: mapguide-users@lists.osgeo.org Subject: RE: [mapguide-users] Tooltip value from object Hi Dave, in this morning I have add a computed property (I have used this expression: "Concat ( 'Nome Sito: ' , Concat ( NOME_SITO , Concat ( '\nCodice Sito: ' , Concat ( SITENUMBER , Concat ( '\nSrambling Code: ' , SCRAMBLING_CODE ) ) ) ) )" ) from Studio . I have edit my layer to point at the new extended feature class. However when I open my weblayout I don't see the feature objects. If I go on FeatureSource Preview of Studio and select the the view data voice of extended feature class I see that the value of computed property the I add is void. Is a SQLServer ODBC Bug? Regards Matteo Are you using the ODBC provider then for the connection since you pointed out the Lat/Lon fields? It may be a bug with the ODBC provider. I understand your need to code it, however I was wondering if you tested it with Studio also. If that fails too it's likely a general bug. Dave -----Original Message----- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Matteo Sent: Thursday, March 26, 2009 2:50 PM To: mapguide-users@lists.osgeo.org Subject: RE: [mapguide-users] Tooltip value from object Dave, my featuresource is a MSSQL 2005 table with LAT, LON fields Add a computed property via Studio is not a good solution for my case because I manage 10 projects with a total of 100 featuresource of this type and this function will work for all of those Thanks a lot Matteo What is the data format of the feature source SDF, SHP? It may be a bug. What if you make a copy of the existing feature source and add the computed property via Studio does that work? Dave -----Original Message----- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Matteo Sent: Thursday, March 26, 2009 1:33 PM To: mapguide-users@lists.osgeo.org Subject: RE: [mapguide-users] Tooltip value from object Hi Dave, if I change this code Dim strTooltipValue as string=GetValueFromReader(objFeatureReader, objFeatureReader.GetPropertyType("thetooltip"), "thetooltip") with this one Dim strTooltipValue as string=GetValueFromReader(objFeatureReader, objFeatureReader.GetPropertyType("ID"), "ID") where ID is a property of featuresource I haven't any error so I think that the problem is the computed property. Matteo I would do the following to better debug things. You should check that the objFeatureReader returned from the SelectFeatures call is not null before starting the .ReadNext. As well note that you don't appear to have set the filter either so you will likely get more than 1 record back from your data. You might also try the SelectFeatures without adding the computed property, but instead specify an existing known property and include the filter. This looks like it should work. Dave -----Original Message----- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Matteo Sent: Thursday, March 26, 2009 11:13 AM To: mapguide-users@lists.osgeo.org Subject: RE: [mapguide-users] Tooltip value from object Hi Dave, this is my code: Dim objQueryOptions As MgFeatureQueryOptions = New MgFeatureQueryOptions() Dim strTooltipExpression as string= ="Concat ( 'Nome Sito: ' , Concat ( NOME_SITO , Concat ( '\nCodice Sito: ' , Concat ( SITENUMBER , Concat ( '\nSrambling Code: ' , SCRAMBLING_CODE ) ) ) ) )" objQueryOptions.AddComputedProperty("thetooltip", strTooltipExpression ) Dim objFeatureReader As MgFeatureReader objFeatureReader = objFeatureServ.SelectFeatures(New MgResourceIdentifier(objLayer.GetFeatureSourceId), objLayer.GetFeatureClassName, objQueryOptions) While objFeatureReader.ReadNext() Dim strTooltipValue as string=GetValueFromReader(objFeatureReader, objFeatureReader.GetPropertyType("thetooltip"), "thetooltip") ' I get the error on this line of code End While GetValueFromReader function is a my function that return the property value. This is the function code: Function GetValueFromReader(ByVal objFeatureReader As MgReader, ByVal intpropertyType As Integer, ByVal strpropertyName As String) As String Dim isNull As Boolean = objFeatureReader.IsNull(strpropertyName) If intpropertyType = MgPropertyType.Boolean Then If isNull Then Return "null" Else Return objFeatureReader.GetBoolean(strpropertyName).ToString() End If ElseIf intpropertyType = MgPropertyType.Byte Then If isNull Then Return "null" Else Return objFeatureReader.GetByte(strpropertyName).ToString() End If ElseIf intpropertyType = MgPropertyType.Clob Then If isNull Then Return "null" Else Return "notNull" End If ElseIf intpropertyType = MgPropertyType.DateTime Then Dim dateTimeStr As String = Nothing If isNull Then Return "null" Else Dim aDateTime As MgDateTime = objFeatureReader.GetDateTime(strpropertyName) dateTimeStr = aDateTime.Month.ToString() + "."c + aDateTime.Day.ToString() + "."c + aDateTime.Year.ToString() + ":"c + aDateTime.Hour.ToString() + ":"c + aDateTime.Minute.ToString() + ":"c + aDateTime.Second.ToString() Return dateTimeStr End If ElseIf intpropertyType = MgPropertyType.Double Then If isNull Then Return "0" Else Return objFeatureReader.GetDouble(strpropertyName).ToString() End If ElseIf intpropertyType = MgPropertyType.Feature Then If isNull Then Return "null" Else Return "notNull" End If ElseIf intpropertyType = MgPropertyType.Int16 Then If isNull Then Return "0" Else Return objFeatureReader.GetInt16(strpropertyName).ToString() End If ElseIf intpropertyType = MgPropertyType.Int32 Then If isNull Then Return "0" Else Return objFeatureReader.GetInt32(strpropertyName).ToString() End If ElseIf intpropertyType = MgPropertyType.Int64 Then If isNull Then Return "0" Else Return objFeatureReader.GetInt64(strpropertyName).ToString() End If ElseIf intpropertyType = MgPropertyType.Raster Then If isNull Then Return "null" Else Return "notNull" End If ElseIf intpropertyType = MgPropertyType.Single Then If isNull Then Return "null" Else Return objFeatureReader.GetSingle(strpropertyName).ToString() End If ElseIf intpropertyType = MgPropertyType.String Then If isNull Then Return "null" Else Return objFeatureReader.GetString(strpropertyName) End If Else Return "" End If End Function Regards, Matteo Can you show a larger block of code? It seems like something else is wrong after you add the computed property to the QueryFeatureOptions object. Dave -----Original Message----- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Matteo Sent: Thursday, March 26, 2009 6:19 AM To: mapguide-users@lists.osgeo.org Subject: RE: [mapguide-users] Tooltip value from object Hi Dave, the Response.Write("Computed Property index: " + result.ToString()); expression return to me "1". So I think that 1 property is add but when I try to get the property values MG give me this error "OSGeo.MapGuide.MgObjectNotFoundException: The specified object was not found". I call my property with this name "thetooltip" and the property expression is: Concat ( 'Nome Sito: ' , Concat ( NOME_SITO , Concat ( '\nCodice Sito: ' , Concat ( SITENUMBER , Concat ( '\nSrambling Code: ' , SCRAMBLING_CODE ) ) ) ) ) I can't modify the featuresource because is used from another program Regards, Matteo So I'm guessing in your code you have something like: result=mgFeatQueryOptions.AddComputedProperty(computedPropAlias, computedProp); So what if you add a debug statement after it to do something like echo the following: Response.Write("Computed Property index: " + result.ToString()); An alternative to trying to do this in code might be to edit the feature source and add the computed property there. Create your layer using the extended feature class and in your code you can just select this property without having to do the computed property bit, but if there is something wrong with the expression you have maybe that is causing the computed property to actually get added. I wouldn't call it tooltip by the way as that seems too much like a keyword. I would call it theToolTip or something to be safe. Dave -----Original Message----- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Matteo Sent: Wednesday, March 25, 2009 10:57 AM To: mapguide-users@lists.osgeo.org Subject: RE: [mapguide-users] Tooltip value from object Hi Dave, now I get the tooltip expression from Layer definition and I add a computed property on MgFeatureQueryOptions. I have used "tooltip" alias. However when I try to read the tooltip property mapguide not find it on property collection. Can you help me? Regards, Matteo Can you parse the layer definition to get the expression and execute a query using the expression as the select statement with the addition of a feature id or key value? Dave -----Original Message----- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Matteo Sent: Tuesday, March 24, 2009 11:39 AM To: mapguide-users@lists.osgeo.org Subject: [mapguide-users] Tooltip value from object Hi All, I need to get the tooltip value from a single object of a layer. In the layer definition the tooltip is an expression. I develop with MG 2.0.2 and ASP.NET Have any ideas? Regards, Matteo -- View this message in context: http://n2.nabble.com/Tooltip-value-from-object-tp2528017p2528017.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users -- View this message in context: http://n2.nabble.com/Tooltip-value-from-object-tp2528017p2533619.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users -- View this message in context: http://n2.nabble.com/Tooltip-value-from-object-tp2528017p2538007.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users -- View this message in context: http://n2.nabble.com/Tooltip-value-from-object-tp2528017p2539760.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users -- View this message in context: http://n2.nabble.com/Tooltip-value-from-object-tp2528017p2540610.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users -- View this message in context: http://n2.nabble.com/Tooltip-value-from-object-tp2528017p2541011.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users -- View this message in context: http://n2.nabble.com/Tooltip-value-from-object-tp2528017p2542913.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users
