SQL is a language but it differs wildly from DBMS to DBMS. Good luck writing a real application that uses _only_ SQL92 constructs...
Gary On Mon, Feb 2, 2015 at 9:16 AM, James Carman <ja...@carmanconsulting.com> wrote: > With JDBC you have a common language, SQL. Unless you're saying you pick > the Java regex language as the standard and adapt to the others, you would > have to come up with (or choose) another regex language. My point is that > creating a facade (a la commons-logging or slf4j) for regex would be > troublesome because you have to support the same exact regex regardless of > the underlying implementation and that would most likely involve some > translation, since the regex libraries out there do not support the same > syntax. Merely coming up with the API is not difficult at all. Perhaps > you did not mean to provide a general purpose façade, but only one that > supports the two libraries in question (assuming this other library > supports Java regex)? > > On Monday, February 2, 2015, Gary Gregory <garydgreg...@gmail.com> wrote: > > > On Sun, Feb 1, 2015 at 5:35 PM, James Carman <ja...@carmanconsulting.com > > <javascript:;>> > > wrote: > > > > > To be clear, I am not advocating this approach. I was merely trying to > > > illustrate what a nightmare such an endeavor would be. :) > > > > > > On Sunday, February 1, 2015, James Carman <ja...@carmanconsulting.com > > <javascript:;>> > > > wrote: > > > > > > > You would basically have to pick a canonical regex language if you > > want a > > > > facade and be able to swap the regex library out. Most of them are > > very > > > > similar but they are not the same. > > > > > > > I would not need a canonical regex language. This could be like JDBC > where > > implementations vary. > > > > Gary > > > > > > > > > On Sunday, February 1, 2015, Gary Gregory <garydgreg...@gmail.com > > <javascript:;> > > > > <javascript:_e(%7B%7D,'cvml','garydgreg...@gmail.com > <javascript:;>');>> > > wrote: > > > > > > > >> I think we'll need some clear performance advantages documented as > > well > > > as > > > >> any compatibility issues. > > > >> > > > >> This begs for a facade API IMO. I would not want to recode my app > just > > > to > > > >> test one vs. the other, it should be pluggable. > > > >> > > > >> Gary > > > >> > > > >> On Sat, Jan 31, 2015 at 10:58 AM, Benson Margulies < > > > bimargul...@gmail.com <javascript:;> > > > >> > > > > >> wrote: > > > >> > > > >> > So, once upon a time, there was a regex library here. It was > > retired, > > > >> > presumably on the grounds that it was rendered obsolete by the > JRE's > > > >> > native support. > > > >> > > > > >> > However, the JRE's regular expressions have a pretty severe > problem; > > > >> > they have unbounded (or at least, very, very, bad) execution time > > for > > > >> > some combinations of data and regex. > > > >> > > > > >> > To cope with this, we ported the Henry Spencer regular expression > > > >> > library (as found in TCL) from C to Java. > > > >> > > > > >> > Thus: https://github.com/basis-technology-corp/tcl-regex-java > > > >> > > > > >> > Is anyone interested in this? Give or take the possible IP muddle > of > > > >> > the original C Code, I could grant it easily. > > > >> > > > > >> > > > --------------------------------------------------------------------- > > > >> > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org > > <javascript:;> > > > >> > For additional commands, e-mail: dev-h...@commons.apache.org > > <javascript:;> > > > >> > > > > >> > > > > >> > > > >> > > > >> -- > > > >> E-Mail: garydgreg...@gmail.com <javascript:;> | ggreg...@apache.org > > <javascript:;> > > > >> Java Persistence with Hibernate, Second Edition > > > >> <http://www.manning.com/bauer3/> > > > >> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > > > >> Spring Batch in Action <http://www.manning.com/templier/> > > > >> Blog: http://garygregory.wordpress.com > > > >> Home: http://garygregory.com/ > > > >> Tweet! http://twitter.com/GaryGregory > > > >> > > > > > > > > > > > > > > > -- > > E-Mail: garydgreg...@gmail.com <javascript:;> | ggreg...@apache.org > > <javascript:;> > > Java Persistence with Hibernate, Second Edition > > <http://www.manning.com/bauer3/> > > JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> > > Spring Batch in Action <http://www.manning.com/templier/> > > Blog: http://garygregory.wordpress.com > > Home: http://garygregory.com/ > > Tweet! http://twitter.com/GaryGregory > > > -- E-Mail: garydgreg...@gmail.com | ggreg...@apache.org Java Persistence with Hibernate, Second Edition <http://www.manning.com/bauer3/> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> Spring Batch in Action <http://www.manning.com/templier/> Blog: http://garygregory.wordpress.com Home: http://garygregory.com/ Tweet! http://twitter.com/GaryGregory
