BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  XML Datasource          BorlandTalk.com Forum Index -> Delphi Databases (ADO) View previous topic :: View next topic   Author Message Emmanuel Barache Guest Posted: Wed Feb 11, 2004 11:34 am    Post subject: XML Datasource Hello, I would like to be able to connect to a XML datasource using OLE DB. This seems to be able thru the OLE DB Simple provider but I don't know how to do. What would the connection string look like to connect to a local XML File ? Do I need some additional middleware to be able to do ? -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] Back to top Guillem Guest Posted: Wed Feb 11, 2004 12:19 pm    Post subject: Re: XML Datasource Quote: I would like to be able to connect to a XML datasource using OLE DB. This seems to be able thru the OLE DB Simple provider but I don't know how to do. What would the connection string look like to connect to a local XML File ? You don't really need a connection string. If you've got an XML file with all data and metadata (field info and so on), then you can use LoadFromFile and SaveToFile methods present in ADO components. Best options for this are TADODataset and TADOTable. Your code would have something like this: TADODataset.LoadFromFile('myFile.xml'); //for loading from xml file //... TADODataset.SaveToFile('myFile.xml'); //for saving again to xml file Doing the first you load onto your dataset all the data. Then you can do whatever you need and save it again to the file. Quote: Do I need some additional middleware to be able to do ? Nop. Only the ADO components present in Delphi Best regards Guillem Back to top Emmanuel Barache Guest Posted: Wed Feb 11, 2004 2:52 pm    Post subject: Re: XML Datasource Thanx, I tried to implement your strategy but the loadfromfile method produces a message like : The recordset object could not be created. XML source is incomplete or not valid. (approximately translated from french) I tried this XML data provided with Delphi 7 (country.xml, biolife.xml .....). Those file seems to contain wanted structure (metadata header with field description and data ...). What is wrong ? I would be happy to know if it's possible to work with a standard connection string because we built a generic ADO interface where a TAdoQuery is connected to an Ado Database using the standard ADO connection wizard, in order to help the user to build the connection string. -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] "Guillem" <keinname (AT) eresmas (DOT) net> a écrit dans le message de news: [email]402a1dc5 (AT) newsgroups (DOT) borland.com[/email]... Quote: I would like to be able to connect to a XML datasource using OLE DB. This seems to be able thru the OLE DB Simple provider but I don't know how to do. What would the connection string look like to connect to a local XML File ? You don't really need a connection string. If you've got an XML file with all data and metadata (field info and so on), then you can use LoadFromFile and SaveToFile methods present in ADO components. Best options for this are TADODataset and TADOTable. Your code would have something like this: TADODataset.LoadFromFile('myFile.xml'); //for loading from xml file //... TADODataset.SaveToFile('myFile.xml'); //for saving again to xml file Doing the first you load onto your dataset all the data. Then you can do whatever you need and save it again to the file. Do I need some additional middleware to be able to do ? Nop. Only the ADO components present in Delphi Best regards Guillem Back to top Viatcheslav V. Vassiliev Guest Posted: Wed Feb 11, 2004 3:14 pm    Post subject: Re: XML Datasource ADO expects XML in its own format - open any query and save result with SaveToFile. Custom formats that does not confirm ADO schema are not supported. //------------------------------------------ Regards, Vassiliev V. V. http://www.managed-vcl.com - using .Net objects in Delphi for Win32 + ADO.Net http://www.oledbdirect.com - The fastest way to access MS SQL Server, MS Jet (Access) and Interbase (through OLEDB) "Emmanuel Barache" <ebarache (AT) hotware (DOT) fr> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ: news:402a41c0$1 (AT) newsgroups (DOT) borland.com... Quote: Thanx, I tried to implement your strategy but the loadfromfile method produces a message like : The recordset object could not be created. XML source is incomplete or not valid. (approximately translated from french) I tried this XML data provided with Delphi 7 (country.xml, biolife.xml ....). Those file seems to contain wanted structure (metadata header with field description and data ...). What is wrong ? I would be happy to know if it's possible to work with a standard connection string because we built a generic ADO interface where a TAdoQuery is connected to an Ado Database using the standard ADO connection wizard, in order to help the user to build the connection string. -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] "Guillem" <keinname (AT) eresmas (DOT) net> a écrit dans le message de news: [email]402a1dc5 (AT) newsgroups (DOT) borland.com[/email]... I would like to be able to connect to a XML datasource using OLE DB. This seems to be able thru the OLE DB Simple provider but I don't know how to do. What would the connection string look like to connect to a local XML File ? You don't really need a connection string. If you've got an XML file with all data and metadata (field info and so on), then you can use LoadFromFile and SaveToFile methods present in ADO components. Best options for this are TADODataset and TADOTable. Your code would have something like this: TADODataset.LoadFromFile('myFile.xml'); //for loading from xml file //... TADODataset.SaveToFile('myFile.xml'); //for saving again to xml file Doing the first you load onto your dataset all the data. Then you can do whatever you need and save it again to the file. Do I need some additional middleware to be able to do ? Nop. Only the ADO components present in Delphi Best regards Guillem Back to top Emmanuel Barache Guest Posted: Wed Feb 11, 2004 4:07 pm    Post subject: Re: XML Datasource Thanks for your answer, I need to reply to a customer that asks me if I'm able to import XML files in my app. My app is currenlty design to import - ASCII files - BDE files (paradox, dbase ...) - ADO datasource thru a TAdoQuery wich connects to t he database using a connection string. My points is to know if I'am able read an XML thru the ADO connection (using a TAdoQuery). If not, It would not cost a lot to add an XML datasource using the LoadFromFile method. I'm just wondering if other applications are able to produce the expected XML format with the ADO format. -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] "Viatcheslav V. Vassiliev" <support (AT) oledbdirect (DOT) com> a écrit dans le message de news: [email]402a46c9 (AT) newsgroups (DOT) borland.com[/email]... Quote: ADO expects XML in its own format - open any query and save result with SaveToFile. Custom formats that does not confirm ADO schema are not supported. //------------------------------------------ Regards, Vassiliev V. V. http://www.managed-vcl.com - using .Net objects in Delphi for Win32 + ADO.Net http://www.oledbdirect.com - The fastest way to access MS SQL Server, MS Jet (Access) and Interbase (through OLEDB) "Emmanuel Barache" <ebarache (AT) hotware (DOT) fr> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ: news:402a41c0$1 (AT) newsgroups (DOT) borland.com... Thanx, I tried to implement your strategy but the loadfromfile method produces a message like : The recordset object could not be created. XML source is incomplete or not valid. (approximately translated from french) I tried this XML data provided with Delphi 7 (country.xml, biolife.xml ....). Those file seems to contain wanted structure (metadata header with field description and data ...). What is wrong ? I would be happy to know if it's possible to work with a standard connection string because we built a generic ADO interface where a TAdoQuery is connected to an Ado Database using the standard ADO connection wizard, in order to help the user to build the connection string. -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] "Guillem" <keinname (AT) eresmas (DOT) net> a écrit dans le message de news: [email]402a1dc5 (AT) newsgroups (DOT) borland.com[/email]... I would like to be able to connect to a XML datasource using OLE DB. This seems to be able thru the OLE DB Simple provider but I don't know how to do. What would the connection string look like to connect to a local XML File ? You don't really need a connection string. If you've got an XML file with all data and metadata (field info and so on), then you can use LoadFromFile and SaveToFile methods present in ADO components. Best options for this are TADODataset and TADOTable. Your code would have something like this: TADODataset.LoadFromFile('myFile.xml'); //for loading from xml file //... TADODataset.SaveToFile('myFile.xml'); //for saving again to xml file Doing the first you load onto your dataset all the data. Then you can do whatever you need and save it again to the file. Do I need some additional middleware to be able to do ? Nop. Only the ADO components present in Delphi Best regards Guillem Back to top Viatcheslav V. Vassiliev Guest Posted: Wed Feb 11, 2004 5:15 pm    Post subject: Re: XML Datasource Quote: I'm just wondering if other applications are able to produce the expected XML format with the ADO format. No, ADO loads/saves XML only with its schema. MS SQL Server can return query as XML with some customization. ADO.Net can save/load in custom format. You may use XML parser/writer to load/save XML in any format you want - implementing this is quite easy. //------------------------------------------ Regards, Vassiliev V. V. http://www.managed-vcl.com - using .Net objects in Delphi for Win32 + ADO.Net http://www.oledbdirect.com - The fastest way to access MS SQL Server, MS Jet (Access) and Interbase (through OLEDB) "Emmanuel Barache" <ebarache (AT) hotware (DOT) fr> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ: news:402a5335$1 (AT) newsgroups (DOT) borland.com... Quote: Thanks for your answer, I need to reply to a customer that asks me if I'm able to import XML files in my app. My app is currenlty design to import - ASCII files - BDE files (paradox, dbase ...) - ADO datasource thru a TAdoQuery wich connects to t he database using a connection string. My points is to know if I'am able read an XML thru the ADO connection (using a TAdoQuery). If not, It would not cost a lot to add an XML datasource using the LoadFromFile method. I'm just wondering if other applications are able to produce the expected XML format with the ADO format. -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] "Viatcheslav V. Vassiliev" <support (AT) oledbdirect (DOT) com> a écrit dans le message de news: [email]402a46c9 (AT) newsgroups (DOT) borland.com[/email]... ADO expects XML in its own format - open any query and save result with SaveToFile. Custom formats that does not confirm ADO schema are not supported. //------------------------------------------ Regards, Vassiliev V. V. http://www.managed-vcl.com - using .Net objects in Delphi for Win32 + ADO.Net http://www.oledbdirect.com - The fastest way to access MS SQL Server, MS Jet (Access) and Interbase (through OLEDB) "Emmanuel Barache" <ebarache (AT) hotware (DOT) fr> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ: news:402a41c0$1 (AT) newsgroups (DOT) borland.com... Thanx, I tried to implement your strategy but the loadfromfile method produces a message like : The recordset object could not be created. XML source is incomplete or not valid. (approximately translated from french) I tried this XML data provided with Delphi 7 (country.xml, biolife.xml ....). Those file seems to contain wanted structure (metadata header with field description and data ...). What is wrong ? I would be happy to know if it's possible to work with a standard connection string because we built a generic ADO interface where a TAdoQuery is connected to an Ado Database using the standard ADO connection wizard, in order to help the user to build the connection string. -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] "Guillem" <keinname (AT) eresmas (DOT) net> a écrit dans le message de news: [email]402a1dc5 (AT) newsgroups (DOT) borland.com[/email]... I would like to be able to connect to a XML datasource using OLE DB. This seems to be able thru the OLE DB Simple provider but I don't know how to do. What would the connection string look like to connect to a local XML File ? You don't really need a connection string. If you've got an XML file with all data and metadata (field info and so on), then you can use LoadFromFile and SaveToFile methods present in ADO components. Best options for this are TADODataset and TADOTable. Your code would have something like this: TADODataset.LoadFromFile('myFile.xml'); //for loading from xml file //... TADODataset.SaveToFile('myFile.xml'); //for saving again to xml file Doing the first you load onto your dataset all the data. Then you can do whatever you need and save it again to the file. Do I need some additional middleware to be able to do ? Nop. Only the ADO components present in Delphi Best regards Guillem Back to top Mike Shkolnik Guest Posted: Wed Feb 11, 2004 8:48 pm    Post subject: Re: XML Datasource Check SMImport suite: http://www.scalabium.com/smi There are supported a lot of file formats including XML, HTML, MS Excel, MS Access, Paradox and dBase (without BDE) etc -- With best regards, Mike Shkolnik E-mail: [email]mshkolnik (AT) scalabium (DOT) com[/email] WEB: http://www.scalabium.com "Emmanuel Barache" <ebarache (AT) hotware (DOT) fr> wrote Quote: Thanks for your answer, I need to reply to a customer that asks me if I'm able to import XML files in my app. My app is currenlty design to import - ASCII files - BDE files (paradox, dbase ...) - ADO datasource thru a TAdoQuery wich connects to t he database using a connection string. My points is to know if I'am able read an XML thru the ADO connection (using a TAdoQuery). If not, It would not cost a lot to add an XML datasource using the LoadFromFile method. I'm just wondering if other applications are able to produce the expected XML format with the ADO format. -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] "Viatcheslav V. Vassiliev" <support (AT) oledbdirect (DOT) com> a écrit dans le message de news: [email]402a46c9 (AT) newsgroups (DOT) borland.com[/email]... ADO expects XML in its own format - open any query and save result with SaveToFile. Custom formats that does not confirm ADO schema are not supported. //------------------------------------------ Regards, Vassiliev V. V. http://www.managed-vcl.com - using .Net objects in Delphi for Win32 + ADO.Net http://www.oledbdirect.com - The fastest way to access MS SQL Server, MS Jet (Access) and Interbase (through OLEDB) "Emmanuel Barache" <ebarache (AT) hotware (DOT) fr> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ: news:402a41c0$1 (AT) newsgroups (DOT) borland.com... Thanx, I tried to implement your strategy but the loadfromfile method produces a message like : The recordset object could not be created. XML source is incomplete or not valid. (approximately translated from french) I tried this XML data provided with Delphi 7 (country.xml, biolife.xml ....). Those file seems to contain wanted structure (metadata header with field description and data ...). What is wrong ? I would be happy to know if it's possible to work with a standard connection string because we built a generic ADO interface where a TAdoQuery is connected to an Ado Database using the standard ADO connection wizard, in order to help the user to build the connection string. -- Best regards, Emmanuel Barache HotWare [email]ebarache (AT) hotware (DOT) fr[/email] "Guillem" <keinname (AT) eresmas (DOT) net> a écrit dans le message de news: [email]402a1dc5 (AT) newsgroups (DOT) borland.com[/email]... I would like to be able to connect to a XML datasource using OLE DB. This seems to be able thru the OLE DB Simple provider but I don't know how to do. What would the connection string look like to connect to a local XML File ? You don't really need a connection string. If you've got an XML file with all data and metadata (field info and so on), then you can use LoadFromFile and SaveToFile methods present in ADO components. Best options for this are TADODataset and TADOTable. Your code would have something like this: TADODataset.LoadFromFile('myFile.xml'); //for loading from xml file //... TADODataset.SaveToFile('myFile.xml'); //for saving again to xml file Doing the first you load onto your dataset all the data. Then you can do whatever you need and save it again to the file. Do I need some additional middleware to be able to do ? Nop. 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