Re: [Haskell-cafe] HDBC-odbc 1.1.4.4 fixes Windows linking problems

2008-06-05 Thread Greg Matheson
On Wed, 04 Jun 2008, John Goerzen wrote:

  Prelude Database.HDBC Database.HDBC.ODBC conn - connectODBC dictation

 Please note that this is not a valid connection string.

I need to remember the connection functions are specific to the 
drivers and there are differences between connectODBC and 
connectSqlite3.

 The HDBC-odbc API docs ...  give the example string of: DSN=hdbctest1
 as well as a link to the Microsoft document that describes the string:
 http://msdn.microsoft.com/en-us/library/ms715433(VS.85).aspx
 That URL also contains error message descriptions.  For your state
 01S00, it lists:

   Invalid connection string attribute

 Your fix may be as simple as prepending the string with DSN=.

That did the trick. And I can insert and query the database. So 
HDBC-odbc-1.1.4.4 is good here.

-- 
Dr Bean  Make a mistake.
 Try it, you'll like it.
 --Dr Bean
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Re: [Haskell-cafe] HDBC-odbc 1.1.4.4 fixes Windows linking problems

2008-06-04 Thread Greg Matheson
On Wed, 04 Jun 2008, Andrew Appleyard wrote:

 Prelude Database.HDBC Database.HDBC.ODBC handleSqlError $ conn - 
 connectODBC dictation
 interactive:1:0: Parse error in pattern

 Try:

   conn - handleSqlError $ connectODBC dictation

C:\cygwin\home\Administratordictation
dictation: user error (SQL error: SqlError {seState = [\IM002\,\01S00\], s
eNativeError = -1, seErrorMsg = connectODBC/sqlDriverConnect: [\0: [Microsoft]
[ODBC \\197X\\176\\202\\181{\\166\\161\\186\\222\\178z\\173\\251] \\167\\228\\16
4\\163\\168\\236\\184\\234\\174\\198\\168\\211\\183\\189\\166W\\186\\217\\165B\\
165\\188\\171\\252\\169w\\185w\\179]\\170\\186\\197X\\176\\202\\181{\\166\\161\
,\0: [Microsoft][ODBC \\197X\\176\\202\\181{\\166\\161\\186\\222\\178z\\173\\25
1] \\181L\\174\\196\\170\\186\\179s\\189u\\166r\\166\\234\\196\\221\\169\\202\]
})

ghc can't handle Chinese Big5, it appears, but HDBC also does appear
to be talking ODBC.

--
Dr Bean  If there is one thing we know after
 studying experts, it is that
 experts know more than we know.
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Re: [Haskell-cafe] HDBC-odbc 1.1.4.4 fixes Windows linking problems

2008-06-04 Thread John Goerzen
Greg Matheson wrote:
 On Tue, 03 Jun 2008, John Goerzen wrote:
 
 Hi,
 
 HDBC-odbc version 1.1.4.4 has been uploaded to Hackage.  It fixes the
 problems some here have encountered regarding ODBC crashes or other
 similar odd behavior on Windows. 
 
 I'm getting a 'Parse error in pattern' error.
 
 C:\Documents and Settings\Administratorghci
 GHCi, version 6.8.2: http://www.haskell.org/ghc/  :? for help
 Loading package base ... linking ... done.
 Prelude :m Database.HDBC.ODBC Database.HDBC
 Prelude Database.HDBC Database.HDBC.ODBC conn - connectODBC dictation

Please note that this is not a valid connection string.

The HDBC-odbc API docs are available at
http://software.complete.org/static/hdbc-odbc/doc//HDBC-odbc/Database-HDBC-ODBC.html
and give the example string of:

DSN=hdbctest1

as well as a link to the Microsoft document that describes the string,
which lives at:

http://msdn.microsoft.com/en-us/library/ms715433(VS.85).aspx

That URL also contains error message descriptions.  For your state
01S00, it lists:

  Invalid connection string attribute

  An invalid attribute keyword was specified in the connection string
  (InConnectionString), but the driver was able to connect to the data
  source anyway. (Function returns SQL_SUCCESS_WITH_INFO.)

Your fix may be as simple as prepending the string with DSN=.

-- John

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[Haskell-cafe] HDBC-odbc 1.1.4.4 fixes Windows linking problems

2008-06-03 Thread John Goerzen
Hi,

HDBC-odbc version 1.1.4.4 has been uploaded to Hackage.  It fixes the
problems some here have encountered regarding ODBC crashes or other
similar odd behavior on Windows.  Thanks to Andrew Appleyard for
tracking down the problem and sending me a patch.

The detailed explanation, if you're interested, is a ccall vs. stdcall
issue in FFI.  Details here:

http://git.complete.org/hdbc-odbc?a=commit;h=cca312d9891d227094494dcee518f436042e14b4

People that are not using HDBC-odbc on Windows will not find any
difference or other changes in this version.

-- 
John Goerzen
Author, Foundations of Python Network Programming
http://www.amazon.com/exec/obidos/tg/detail/-/1590593715
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Re: [Haskell-cafe] HDBC-odbc 1.1.4.4 fixes Windows linking problems

2008-06-03 Thread Greg Matheson
On Tue, 03 Jun 2008, John Goerzen wrote:

 Hi,

 HDBC-odbc version 1.1.4.4 has been uploaded to Hackage.  It fixes the
 problems some here have encountered regarding ODBC crashes or other
 similar odd behavior on Windows. 

I'm getting a 'Parse error in pattern' error.

C:\Documents and Settings\Administratorghci
GHCi, version 6.8.2: http://www.haskell.org/ghc/  :? for help
Loading package base ... linking ... done.
Prelude :m Database.HDBC.ODBC Database.HDBC
Prelude Database.HDBC Database.HDBC.ODBC conn - connectODBC dictation
Loading package array-0.1.0.0 ... linking ... done.
Loading package containers-0.1.0.1 ... linking ... done.
Loading package bytestring-0.9.0.1 ... linking ... done.
Loading package old-locale-1.0.0.0 ... linking ... done.
Loading package old-time-1.0.0.0 ... linking ... done.
Loading package mtl-1.1.0.0 ... linking ... done.
Loading package HDBC-1.1.4 ... linking ... done.
Loading package HDBC-odbc-1.1.4.4 ... linking ... done.
*** Exception: (unknown)
Prelude Database.HDBC Database.HDBC.ODBC handleSqlError $ conn - connectODBC 
dictation
interactive:1:0: Parse error in pattern



-- 
Dr Bean  If there is one thing we learn from the 
 study of language learning, it is that
 language learners learn more than we learn.  
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Re: [Haskell-cafe] HDBC-odbc 1.1.4.4 fixes Windows linking problems

2008-06-03 Thread Andrew Appleyard

On 4/06/2008 1:05 PM, Greg Matheson wrote:

I'm getting a 'Parse error in pattern' error.

C:\Documents and Settings\Administratorghci
GHCi, version 6.8.2: http://www.haskell.org/ghc/  :? for help
Loading package base ... linking ... done.
Prelude :m Database.HDBC.ODBC Database.HDBC
[...]
Prelude Database.HDBC Database.HDBC.ODBC handleSqlError $ conn - connectODBC 
dictation
interactive:1:0: Parse error in pattern


Try:

  conn - handleSqlError $ connectODBC dictation

You can only use '-' in a do expression, or at the GHCi prompt.

-- Andrew

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