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Article #216QueryDataSet: How to do "trial" query and accept or decline
From: John T. Dow
Date: Wed, 19 Jul 2006 09:21
Date: Wed, 19 Jul 2006 09:21
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1483 bytes
Is it possible to change a querydataset's query string and execute the query, and then revert to the original query string with the original rows and cursor position without having to reexecute with the original query string? I have an application where the user can easily create new queries on the fly. As I have developed it so far, if the user tries a new query, he loses the old. I would like to be able to revert to the old query, for example if the new query fails to find any rows. Is it possible to do something clever like saving the original QueryProvider? Can you clone the entire qds, change the query string etc, and then if you like the outcome substitute the new qds for the old? John
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X-Google-Thread: 1073da,3b0213ebece65c18,start X-Google-Attributes: gid1073da,public X-Google-Language: ENGLISH,ASCII-7-bit Newsgroups: borland.public.jbuilder.database Subject: QueryDataSet: How to do "trial" query and accept or decline From: "John T. Dow" <john@johntdow.com> Message-ID: <Xns98053677CC68Cjohnjohntdowcom@207.105.83.66> User-Agent: Xnews/5.04.25 NNTP-Posting-Host: 151.201.53.226 Date: 19 Jul 2006 02:21:14 -0700 X-Trace: newsgroups.borland.com 1153300874 151.201.53.226 (19 Jul 2006 02:21:14 -0700) Lines: 15 Path: arc1-ca.pugleaf.net!g2news2.google.com!news4.google.com!news2.volia.net!newsfeed01.sul.t-online.de!t-online.de!newsfeed.inode.at!reader.uucp.at!feeder02.uucp.at!newsfeed.uucp.at!news.uucp.at!newsgroups.borland.com!not-for-mail