Thread View: comp.sys.mac.databases
4 messages
4 total messages
Started by David Tsai
Tue, 03 Nov 1992 20:03
Importing into 4D subfile
Author: David Tsai
Date: Tue, 03 Nov 1992 20:03
Date: Tue, 03 Nov 1992 20:03
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Does anyone know how to import an ASCII file into a subfile in 4D? I know all about tab-delimiters. Do I have to do anything special to the file before I import it....for example, Will all subfiles will have to be in a separate file from the rest of the table? Does 4d take care of importing automatically into the subfile or will I have to write the special code to import data to the subfile. I want this to work at the runtime level cause my client wants to be able to do this herself. All help will and always is greatly appreciated! Sincerly, DAVE
Re: Importing into 4D subfile
Author: Mike Hennahane
Date: Tue, 03 Nov 1992 22:59
Date: Tue, 03 Nov 1992 22:59
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David Tsai <dt1n+@andrew.cmu.edu> writes: >Do I have to do anything special to the file before I import it....for >example, Will all subfiles will have to be in a separate file from the >rest of the table? this is up to you; 4d does not automatically do anything with subfile importing that you do not code yourself. i usually encapsulate the entire subfile in what 4d interpretes as a text field; then i parse out and create the subrecords myself. >Does 4d take care of importing automatically into the subfile or will I >have to write the special code to import data to the subfile. I want >this to work at the runtime level cause my client wants to be able to do >this herself. you will have to write code (see above). there is no reason, though, that you can't make the import a menu choice so that your client can do them herself. all you really have to do is make sure that the import file is in the format that your import code expects. --mike
Re: Importing into 4D subfile
Author: L Boyd
Date: Wed, 04 Nov 1992 05:19
Date: Wed, 04 Nov 1992 05:19
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David Tsai <dt1n+@andrew.cmu.edu> writes: >Does 4d take care of importing automatically into the subfile or will I >have to write the special code to import data to the subfile. I want >this to work at the runtime level cause my client wants to be able to do >this herself. Hey Dave -- *HEADACHE* is the name of this game! Try to avoid subfiles if you can, but I bet you wouldn't have asked the question if you didn't want an answer... Unfortunately, you've got to walk through each record you want to add to the subfile -- create it, assigne the values and then *SAVE* the Subrecord. When you select the *parent* record, it's the current selection, and the *FIRST* subrecord is the curren *sub* selection, if you will. One trick that I like to use is to make a separate data file that's all text (7-8 fields) and dump the data to be exported into it. Then you can manipulate the data as you like and put it in to the appropriate data file. Hope this helps. ****************************************************************************** Lauren Boyd Department of Otolaryngology Systems Analyst/Programmer University of Washington, RL-30 *Go Bill!* Seattle, Washington 98195 ******************************************************************************
Re: Importing into 4D subfile
Author: Mike Hennahane
Date: Wed, 04 Nov 1992 07:29
Date: Wed, 04 Nov 1992 07:29
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gnat@stein.u.washington.edu (L Boyd) writes: [to import data into subfiles] >Unfortunately, you've got to walk through each record you want to add >to the subfile -- create it, assigne the values and then *SAVE* the Subrecord. warning: you can *not* save subrecords. a subrecord is saved when/if the parent record is saved. >When you select the *parent* record, it's the current selection, and the >*FIRST* subrecord is the curren *sub* selection, if you will. clarification: if there is more than one record in the current selection, the record that you are working on is the 'current record,' not the 'current selection.' likewise, if there is more than one subrecord in the subfile, when the record is loaded the first subrecord is the 'current subrecord' and not the 'current subselection.' >One trick that I like to use is to make a separate data file that's all >text (7-8 fields) and dump the data to be exported into it. Then you >can manipulate the data as you like and put it in to the appropriate data >file. i'm not really sure what you are saying here, but i do something similar if i am importing a record that contains subrecords. on the import layout i include a VARIABLE that will be filled with the entire contents of the subfile. this variable will get all of the subfile data concatenated together delimited with a subfield delimiter assigned by me. it can then be broken up on import into subrecords and saved when the parent record is saved. if you have a spare text field (like a comments field that is to be filled in later by hand), it can be used for the same purpose except that it allows you to run an update procedure later to do the parsing, whch makes the actual import part of the process faster. --mike
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