Re: [PATCH] Fix conversion for Decimal arguments in plpython functions - Mailing list pgsql-hackers

<div dir="ltr"><br /><div class="gmail_extra"><br /><br /><div class="gmail_quote">On 28 June 2013 22:29, Claudio
Freire<span dir="ltr"><<a href="mailto:klaussfreire@gmail.com" target="_blank">klaussfreire@gmail.com</a>></span>
wrote:<br/><blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div
class=""><divclass="h5">On Fri, Jun 28, 2013 at 5:14 PM, Steve Singer <<a
href="mailto:steve@ssinger.info">steve@ssinger.info</a>>wrote:<br /> > On 06/27/2013 05:04 AM, Szymon Guz
wrote:<br/> >><br /> >> On 27 June 2013 05:21, Steve Singer <<a
href="mailto:steve@ssinger.info">steve@ssinger.info</a><br/> >> <mailto:<a
href="mailto:steve@ssinger.info">steve@ssinger.info</a>>>wrote:<br /> >><br /> >>     On 06/26/2013
04:47PM, Szymon Guz wrote:<br /> >><br /> >><br /> >><br /> >><br /> >><br /> >><br
/>>> Hi Steve,<br /> >> thanks for the changes.<br /> >><br /> >> You're idea about common code
fordecimal and cdecimal is good, however<br /> >> not good enough. I like the idea of common code for decimal and
cdecimal.<br/> >> But we need class name, not the value.<br /> >><br /> >> I've changed the code from
str(x)to x.__class__.__name__ so the function<br /> >> prints class name (which is Decimal for both packages),
notthe value. We<br /> >> need to have the class name check. The value is returned by the function and<br />
>>is a couple of lines lower in the file.<br /> >><br /> >> patch is attached.<br /> >><br />
><br/> > I think the value is more important than the name, I want to the tests to<br /> > make sure that the
conversionis actually converting properly.  With your<br /> > method of getting the class name without the module we
canhave both.<br /> ><br /> > The attached patch should print the value and the class name but not the<br /> >
modulename.<br /><br /><br /></div></div>Why not forego checking of the type, and instead check the interface?<br /><br
/><ahref="http://plpy.info" target="_blank">plpy.info</a>(x.as_tuple())<br /><br /> Should do.<br /><br /> >>>
d = decimal.Decimal((0,(3,1,4),-2))<br /> >>> d.as_tuple()<br /> DecimalTuple(sign=0, digits=(3, 1, 4),
exponent=-2)<br/> >>> d.as_tuple() == (0,(3,1,4),-2)<br /> True<br /> >>> d =
decimal.Decimal("3.14")<br/> >>> d.as_tuple()<br /> DecimalTuple(sign=0, digits=(3, 1, 4), exponent=-2)<br />
>>>d.as_tuple() == (0,(3,1,4),-2)<br /> True<br /> >>><br /></blockquote></div><br /></div><div
class="gmail_extra">Yea,however decimal and cdecimal have different outputs:</div><div class="gmail_extra"><br
/></div><divclass="gmail_extra"><div class="gmail_extra">For decimal:</div><div class="gmail_extra"><br /></div><div
class="gmail_extra">!INFO:  DecimalTuple(sign=1, digits=(1, 0, 0), exponent=0)</div><div class="gmail_extra"><br
/></div><divclass="gmail_extra">for cdecimal:</div><div class="gmail_extra"><br /></div><div class="gmail_extra">!
INFO: DecimalTuple(sign=1, digits=(1, 0, 0), exponent=0L)</div></div></div>