Re: Blob to Record
It would be very handy for a lot of different reasons. A few months ago, I added a feature request for it: http://forums.4d.com/Post/EN/17757394/1/17757395#17757395 Please vote for it if you think it would be useful. John DeSoi, Ph.D. > On Aug 3, 2017, at 8:45 AM, Chip Scheide via 4D_Tech <4d_tech@lists.4d.com> > wrote: > > I was thinking about this, and thought a 'Record to Blob' and 'blob to > record' would be useful/handy. ** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
Re: Blob to Record
THANKS Actually, I'm not trying to do anything with this - at the moment. I am working on a component for managing text, and a couple of routines do records to text and record to blob/text, with the idea (no specific implementation intent) of exporting to some other program/database. I was thinking about this, and thought a 'Record to Blob' and 'blob to record' would be useful/handy. Thanks again Chip On Thu, 3 Aug 2017 14:37:46 +0200, Koen Van Hooreweghe via 4D_Tech wrote: > Hi Chip, > > It depends on what you want to try to achieve with that command. > I’m using the code below to copy a complete 4D record binary into a > blob. But the only thing you normally can do with the resulting blob > is to put it back into a record. > AFAIK this is also the case with the API Pack (and OTools?) commands. > > But in your pseudo code I noticed you add a 'convert to text' > command. So the resulting blob would contain a textual representation > of the record. But that would fail with binary fields like pictures, > objects and blobs. > > This is my RecordToBlob method, which uses an intermediate file in > the temp directory: > //usage: $blob:=RecordToBlob(->[myTable]myField) > C_POINTER($1;$tablePtr) > C_BLOB($0) > C_TEXT($path) > > $tablePtr:=$1 > > If (Records in selection($tablePtr->)#0) > $path:=Temporary folder +"temp_rec_to_blob"+String(Current process) > SET CHANNEL(10;$path) > SEND RECORD($tablePtr->) > SET CHANNEL(11) > > DOCUMENT TO BLOB($path;$0) > Else > TRACE > End if > > > And its BlobToRecord counterpart: > //usage: RecordToBlob($blob;->[myTable]myField) > C_BLOB($1;$blob) > C_POINTER($2;$tablePtr) > > $blob:=$1 > $tablePtr:=$2 > > $path:=4D_temp_path +"temp_rec_to_blob"+String(Current process) > > BLOB TO DOCUMENT($path;$blob) > > SET CHANNEL(10;$path) > RECEIVE RECORD($tablePtr->) > SET CHANNEL(11) > SAVE RECORD($tablePtr->) > > > Kind regards, > Koen > >> Op 2 aug. 2017, om 20:20 heeft Chip Scheide via 4D_Tech >> <4d_tech@lists.4d.com> het volgende geschreven: >> >> is there simple way to move an entire (arbitrary) record to a blob? >> >> I was hoping for a simple command like: >> Record to blob([table];Blob) > > > > > Compass bvba > Koen Van Hooreweghe > Kloosterstraat 65 > 9910 Knesselare > Belgium > tel +32 495 511.653 > > ** > 4D Internet Users Group (4D iNUG) > FAQ: http://lists.4d.com/faqnug.html > Archive: http://lists.4d.com/archives.html > Options: http://lists.4d.com/mailman/options/4d_tech > Unsub: mailto:4d_tech-unsubscr...@lists.4d.com > ** --- Gas is for washing parts Alcohol is for drinkin' Nitromethane is for racing ** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
Re: Blob to Record
Hi Chip, It depends on what you want to try to achieve with that command. I’m using the code below to copy a complete 4D record binary into a blob. But the only thing you normally can do with the resulting blob is to put it back into a record. AFAIK this is also the case with the API Pack (and OTools?) commands. But in your pseudo code I noticed you add a 'convert to text' command. So the resulting blob would contain a textual representation of the record. But that would fail with binary fields like pictures, objects and blobs. This is my RecordToBlob method, which uses an intermediate file in the temp directory: //usage: $blob:=RecordToBlob(->[myTable]myField) C_POINTER($1;$tablePtr) C_BLOB($0) C_TEXT($path) $tablePtr:=$1 If (Records in selection($tablePtr->)#0) $path:=Temporary folder +"temp_rec_to_blob"+String(Current process) SET CHANNEL(10;$path) SEND RECORD($tablePtr->) SET CHANNEL(11) DOCUMENT TO BLOB($path;$0) Else TRACE End if And its BlobToRecord counterpart: //usage: RecordToBlob($blob;->[myTable]myField) C_BLOB($1;$blob) C_POINTER($2;$tablePtr) $blob:=$1 $tablePtr:=$2 $path:=4D_temp_path +"temp_rec_to_blob"+String(Current process) BLOB TO DOCUMENT($path;$blob) SET CHANNEL(10;$path) RECEIVE RECORD($tablePtr->) SET CHANNEL(11) SAVE RECORD($tablePtr->) Kind regards, Koen > Op 2 aug. 2017, om 20:20 heeft Chip Scheide via 4D_Tech > <4d_tech@lists.4d.com> het volgende geschreven: > > is there simple way to move an entire (arbitrary) record to a blob? > > I was hoping for a simple command like: > Record to blob([table];Blob) Compass bvba Koen Van Hooreweghe Kloosterstraat 65 9910 Knesselare Belgium tel +32 495 511.653 ** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
Re: Blob to Record
Hi Chip, > On 3 Aug 2017, at 04:20 AEST, Chip Scheide via 4D_Tech <4d_tech@lists.4d.com> > wrote: > > is there simple way to move an entire (arbitrary) record to a blob? Maybe you should take a look at ObjectTools commands OT PutRecord / OT PutRecord / OT GetRecordTable. Cheers Jörg ** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
Re: Blob to Record
API Pack has Record to BLOB and BLOB to record. -- Douglas von Roeder 949-336-2902 On Wed, Aug 2, 2017 at 11:20 AM, Chip Scheide via 4D_Tech < 4d_tech@lists.4d.com> wrote: > is there simple way to move an entire (arbitrary) record to a blob? > > I was hoping for a simple command like: > Record to blob([table];Blob) > > rather then > for(records) > for(number of fields) > convert to text(field) > append text to blob > end for > next > end for > > --- > Gas is for washing parts > Alcohol is for drinkin' > Nitromethane is for racing > ** > 4D Internet Users Group (4D iNUG) > FAQ: http://lists.4d.com/faqnug.html > Archive: http://lists.4d.com/archives.html > Options: http://lists.4d.com/mailman/options/4d_tech > Unsub: mailto:4d_tech-unsubscr...@lists.4d.com > ** ** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
Blob to Record
is there simple way to move an entire (arbitrary) record to a blob? I was hoping for a simple command like: Record to blob([table];Blob) rather then for(records) for(number of fields) convert to text(field) append text to blob end for next end for --- Gas is for washing parts Alcohol is for drinkin' Nitromethane is for racing ** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
