Hi Matthew Are the CDS files being stored as disk files or in a database? How are they being corrupted? Faulty back up media? Perhaps you could add some meta-data to each file as it is saved.
Todd. > The driver for the question, is that we have some application client > datasets which are put into a defaulted state if a corrupt cds file is > loaded. > > Yes with XML, we can just validate the XML, but we use the binary format > so that solution does not apply. > > At present we basically have two solutions. > > 1. Load into a test clientdataset as suggested by Alistair. This is a > valid solution but does add considerable load time into the startup. > > 2. Can load into application clientdatasets, and dispose and reload if > error encountered. This is ok also but does require additional loading in > case of error. > > What I'm really after is a file level test to check that file should even > be attempted. e.g. open file stream seek start and seek end and check a > couple of bytes... that type of thing. > > Matt. > > > > >> What does "validate" mean for a CDS file ? >> >> For XML it obviously/intuitively means "is a valid XML representation of a >> CDS file" but for a CDS file, if you dumped it from a client data set in >> the >> first place, what additional validation would be needed to ensure that it >> is >> a CDS file ? >> >> >> -----Original Message----- >> From: delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] >> On >> Behalf Of Matthew Comb >> Sent: Monday, 17 January 2011 10:27 >> To: NZ Borland Developers Group - Delphi List >> Subject: Re: [DUG] Validating CDS files >> >> Hey Cam, for space size reasons, we're using the CDS format not the XML >> format as the files get pretty large. >> >> Matt >> >> >>> If you have dumped the CDS as XML then you can validate it using XSD. I >>> haven't come across a schema for it but it shouldn't be hard to make. >>> >>> Cameron Hart | Development Manager | Flow Software Limited >>> P: +64 9 476 3569 x910 | M: +64 21 222 3569 | E: >>> cameron.h...@flowsoftware.co.nz >>> PO Box 305-237, Triton Plaza, Auckland 0757, New Zealand | >>> www.flowsoftware.co.nz >>> >>> This message is intended for the addressee named above. It may contain >>> privileged or confidential information. If you are not the intended >>> recipient of this message you must not use, copy, distribute or disclose >>> it to anyone. >>> >>> Please consider the environment before printing this email >>> >>> -----Original Message----- >>> From: delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] >>> On Behalf Of Matthew Comb >>> Sent: Monday, 17 January 2011 10:03 a.m. >>> To: NZ Borland Developers Group - Delphi List >>> Cc: NZ Borland Developers Group - Delphi List >>> Subject: [DUG] Validating CDS files >>> >>> Does anyone know if there is a way to Validate a CDS file (midas) before >>> attempting to load it into the dataset ? >>> >>> Matt >>> >>> _______________________________________________ >>> NZ Borland Developers Group - Delphi mailing list >>> Post: delphi@delphi.org.nz >>> Admin: http://delphi.org.nz/mailman/listinfo/delphi >>> Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: >>> unsubscribe >>> >>> _______________________________________________ >>> NZ Borland Developers Group - Delphi mailing list >>> Post: delphi@delphi.org.nz >>> Admin: http://delphi.org.nz/mailman/listinfo/delphi >>> Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: >>> unsubscribe >>> >>> >> >> _______________________________________________ >> NZ Borland Developers Group - Delphi mailing list >> Post: delphi@delphi.org.nz >> Admin: http://delphi.org.nz/mailman/listinfo/delphi >> Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: >> unsubscribe >> >> _______________________________________________ >> NZ Borland Developers Group - Delphi mailing list >> Post: delphi@delphi.org.nz >> Admin: http://delphi.org.nz/mailman/listinfo/delphi >> Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: >> unsubscribe >> >> > > _______________________________________________ > NZ Borland Developers Group - Delphi mailing list > Post: delphi@delphi.org.nz > Admin: http://delphi.org.nz/mailman/listinfo/delphi > Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: > unsubscribe > _______________________________________________ NZ Borland Developers Group - Delphi mailing list Post: delphi@delphi.org.nz Admin: http://delphi.org.nz/mailman/listinfo/delphi Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: unsubscribe
