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D7 to D2007 OnGetTableName

 
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Mark Horrocks
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PostPosted: Wed Apr 11, 2007 6:43 am    Post subject: D7 to D2007 OnGetTableName Reply with quote



I have the trial version D2007 and loaded a complex app server with remote
data module and child RDMs.

Many of the dataset providers use the onGetTablename event to resolve the
table name on updating joined queries.

While this has compiled fine for years in D7, D2007 complains that this
event has an incompatible parameter list and wants to remove the event
reference. If I allow this the event OnGetTableName becomes blank. If I then
try to replace the event I get an error Property and Method
DatasetProviderXXXGetTableName are incompatible. What is happening here?

Mark Horrocks
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Mark Horrocks
Guest





PostPosted: Wed Apr 11, 2007 6:48 am    Post subject: Re: D7 to D2007 OnGetTableName Reply with quote



Additionally, when I loaded this project (the dpr), it loaded with an access
violation error for each of the child RDMs. Then D2007 upgraded my project
adding a bdsproj file. If I save this and close / reload the project it
loads without the access violation errors. Is this normal or has it removed
something I need?

Mark Horrocks
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Marc Rohloff [TeamB]
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PostPosted: Wed Apr 11, 2007 8:18 pm    Post subject: Re: D7 to D2007 OnGetTableName Reply with quote



On Wed, 11 Apr 2007 09:43:23 +0800, Mark Horrocks wrote:

Quote:
While this has compiled fine for years in D7, D2007 complains that this
event has an incompatible parameter list and wants to remove the event
reference. If I allow this the event OnGetTableName becomes blank. If I then
try to replace the event I get an error Property and Method
DatasetProviderXXXGetTableName are incompatible. What is happening here?

I would suggest you find out what parameters D2007 expects for the
OnGetTableName event. This should give you a clue about what is
happening.

--
Marc Rohloff [TeamB]
marc -at- marc rohloff -dot- com
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Andrew
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PostPosted: Thu Apr 12, 2007 8:13 am    Post subject: Re: D7 to D2007 OnGetTableName Reply with quote

"Mark Horrocks" <markhorrocks_at_yahoo_dot_com> wrote in message news:461c3d38$1 (AT) newsgroups (DOT) borland.com...
Quote:
I have the trial version D2007 and loaded a complex app server with remote
data module and child RDMs.

Many of the dataset providers use the onGetTablename event to resolve the
table name on updating joined queries.

While this has compiled fine for years in D7, D2007 complains that this
event has an incompatible parameter list and wants to remove the event
reference. If I allow this the event OnGetTableName becomes blank. If I then
try to replace the event I get an error Property and Method
DatasetProviderXXXGetTableName are incompatible. What is happening here?

Mark Horrocks

Mark,

It removes the reference, but the method still remains in your code. When you try to replace the event, it finds the "old" method still there with the incorrect parameter list and throws the error. Just rename the old method, replace the event with a blank template and copy the old code across.
Cheers,
Andrew
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Mark Horrocks
Guest





PostPosted: Thu Apr 12, 2007 1:51 pm    Post subject: Re: D7 to D2007 OnGetTableName Reply with quote

Quote:
It removes the reference, but the method still remains in your code. When
you try to replace >>the event, it finds the "old" method still there with
the incorrect parameter list and throws the >>error. Just rename the old
method, replace the event with a blank template and copy the old >>code
across.

I deleted the code and then tried to replace the method but it still threw
the error. There are no *parameters* for OnGetTableName. The code simply
goes
inherited;
TableName = 'CUSTOMERS';

For some reason it doesn't like this.

Mark Horrocks
www.sportdata.com.au
www.heleneintimates.biz
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Andrew
Guest





PostPosted: Fri Apr 13, 2007 8:13 am    Post subject: Re: D7 to D2007 OnGetTableName Reply with quote

"Mark Horrocks" <markhorrocks_at_yahoo_dot_com> wrote in message news:461df312 (AT) newsgroups (DOT) borland.com...
Quote:

It removes the reference, but the method still remains in your code. When
you try to replace >>the event, it finds the "old" method still there with
the incorrect parameter list and throws the >>error. Just rename the old
method, replace the event with a blank template and copy the old >>code
across.

I deleted the code and then tried to replace the method but it still threw
the error. There are no *parameters* for OnGetTableName. The code simply
goes
inherited;
TableName = 'CUSTOMERS';

For some reason it doesn't like this.

Mark Horrocks
www.sportdata.com.au
www.heleneintimates.biz

Mark,

When I try it, there are three method parameters in D2007:

DataSetProvider1GetTableName(Sender: TObject; DataSet:TDataSet; var TableName: WideString);

Is the error when you try to generate the method placeholder (double-click in Object Inspector) or on trying to compile? If it's on trying to compile, I'd suspect the "inherited" call - I'm not actually sure what it's there for anyway as event handlers are normally not virtual. Remove the "inherited;" and see what happens.

HTH
Andrew
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Marc Rohloff [TeamB]
Guest





PostPosted: Fri Apr 13, 2007 6:36 pm    Post subject: Re: D7 to D2007 OnGetTableName Reply with quote

On Fri, 13 Apr 2007 16:32:56 +1000, Andrew wrote:

Quote:
When I try it, there are three method parameters in D2007:
DataSetProvider1GetTableName(Sender: TObject; DataSet:TDataSet; var TableName: WideString);

And what were the parameters in the Delphi 7 version?

--
Marc Rohloff [TeamB]
marc -at- marc rohloff -dot- com
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