Re: why does plperl cache functions using just a bool for is_trigger

<br /><br /> On 10/24/2010 07:50 PM, Tom Lane wrote: <blockquote cite="mid:23157.1287964203@sss.pgh.pa.us"
type="cite"><prewrap="">Andrew Dunstan <a class="moz-txt-link-rfc2396E"
href="mailto:andrew@dunslane.net"><andrew@dunslane.net></a>writes:
 
</pre><blockquote type="cite"><pre wrap="">On 10/24/2010 06:44 PM, Tom Lane wrote:
</pre><blockquote type="cite"><pre wrap="">I'm not certain that plperl is actually correct to do it that way,
but that's the basic idea.
</pre></blockquote></blockquote><pre wrap="">
</pre><blockquote type="cite"><pre wrap="">Why do we need the is_trigger flag at all for the plperl hash key? At 
first glance it strikes me as unnecessary.
</pre></blockquote><pre wrap="">
We might not.  Does the presence or absence of the $_TD hash reference
have any impact on what we cache, or what Perl might cache internally?
</pre></blockquote><br /> For both trigger and non-trigger functions, we compile this ahead of the user-set function
code:<br/><br /><blockquote>our $_TD; local $_TD=shift;<br /></blockquote><br /> Non-trigger functions get passed
"undef"to correspond to this invisible argument, while trigger functions get passed the hashref that the trigger
callingcode has set up.<br /><br /> cheers<br /><br /> andrew<br /><br /><br /><br />