can't Convert delphi's dataset to lazaruses dataset.
lazarus / 16-Databases

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wylton · 2014-10-21 10:50

i have changed TFieldType in db.pas for
 TFieldType = (ftUnknown, ftString, ftSmallint, ftInteger, ftWord, //
0..4
      ftBoolean, ftFloat, ftCurrency, ftBCD, ftDate, ftTime,
ftDateTime, // 5..11
      ftBytes, ftVarBytes,  ftAutoInc, ftBlob, ftMemo, ftGraphic,
ftFmtMemo, // 12..18
      ftParadoxOle, ftDBaseOle, ftTypedBinary, ftCursor, ftFixedChar,
ftWideString, // 19..24
      ftLargeint, ftADT, ftArray, ftReference, ftDataSet, ftOraBlob,
ftOraClob, // 25..31
      ftVariant, ftInterface, ftIDispatch, ftGuid, ftTimeStamp,
ftFMTBcd, // 32..37
      ftFixedWideChar, ftWideMemo, ftOraTimeStamp, ftOraInterval, //
38..41
      ftLongWord, ftShortint, ftByte, ftExtended, ftConnection,
ftParams, ftStream, //42..48
      ftTimeStampOffset, ftObject, ftSingle); //49..51

but i always get ord(high( TFieldType))=39.

how can i to do?

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taazz · 2014-10-21 11:07

you probably need to run "make all" for fpc since the db.pas comes
with fpc not lazarus.

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BigChimp · 2014-10-21 11:49

So what is the exact change and why do you need it? If it's useful for
others, please feel free to file a feature request in the bugtracker

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wylton · 2014-10-21 13:00

Quote from: taazz on October 21, 2014, 01:07:20 pmyou probably need to
run "make all" for fpc since the db.pas comes with fpc not lazarus.
how can i recompile fpc in windows?  I can't find out in web .

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wylton · 2014-10-21 13:03

Quote from: BigChimp on October 21, 2014, 01:49:15 pmSo what is the
exact change and why do you need it? If it's useful for others, please
feel free to file a feature request in the bugtracker
I have  dataserver  with delphi . i do client with lazarus . and
TFieldtype is different.

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BigChimp · 2014-10-21 13:04

Look at the installation instructions on the fpc site (don't know
where they are exactly) or in your FPC directory.

There are also instructions on
http://wiki.lazarus.freepascal.org/Installing_Lazarus

You need to have the fpc sources and a bootstrap compiler (fpc 2.6.4)
taazz is right: you'd then do make all/make install. See the
instructions.

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BigChimp · 2014-10-21 13:06

Quote from: wylton on October 21, 2014, 03:03:56 pmI have  dataserver 
with delphi . i do client with lazarus . and TFieldtype is different.
And presumably you added new datatypes at the end or something? Ah
well, never mind...

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marcov · 2014-10-21 13:12

Quote from: BigChimp on October 21, 2014, 03:04:44 pmLook at the
installation instructions on the fpc site (don't know where they are
exactly) or in your FPC directory.

Afaik since FPC distributes binary in general, the building is not one
button-press like Lazarus. The buildfaq (link on the FPC docs webpage)
is the closest I guess, but a bit more geared towards development
(build trunk yourself), and not messing in existing distributions.

Lazarus will also need a (full) recompile after FPC is built btw.

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u2o · 2014-10-21 14:02

Hi!
If change:
Code: [Select]{$mode objfpc}{$H+} with Code: [Select]{$mode delphi}
Maybe works?

Info: http://www.freepascal.org/docs-
html/prog/progap4.html#progse62.html

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rvk · 2014-10-21 14:15

Quote from: wylton on October 21, 2014, 03:03:56 pmI have  dataserver 
with delphi . i do client with lazarus . and TFieldtype is different.
Just adding FieldTypes to TFieldType won't help you very much with
this. There is a lot of code in db.pas (and others) which you would
need to change (and add) to take advantage of those new types. You've
taken this fragment from DB.PAS in Delphi so if you look in there
you'll see it's used a lot more then just the type-definition.

Maybe if you specify what server en what fields you have trouble
with... we could help you determine the problem and try to fix it.