>Ok.  Does it seem like mitigating this might be a reasonable enhancement for 
>JXPath?  I don't know yet how it would work, but I see it as a flag that when 
>on, would simply deal with this by extending the list automatically.

I am not sure. You can file an issue for that if you'd like. From what I 
understood reading some parts of the code (e.g. ValueUtils#setValue) this is by 
design. You are using a List, so that worked in your case. But should you had 
another collection, I believe you would get a UnsupportedOperationException.


There may be other approaches to solving this issue that I am not aware of. But 
in case you build a good argument in your issue in JIRA, it may be implemented 
in jxpath.

Cheers
Bruno

________________________________
From: "KARR, DAVID" <dk0...@att.com>
To: Commons Users List <user@commons.apache.org>; Bruno P. Kinoshita 
<brunodepau...@yahoo.com.br> 
Sent: Friday, 16 June 2017 3:37 AM
Subject: RE: [jxpath] How to add an entry to a list?



> -----Original Message-----
> From: Bruno P. Kinoshita [mailto:brunodepau...@yahoo.com.br.INVALID]
> Sent: Thursday, June 15, 2017 2:51 AM
> To: Commons Users List <user@commons.apache.org>
> Subject: Re: [jxpath] How to add an entry to a list?
> 
> Thanks for the link David. Posted a complete reply there, but here's the
> TL;DR.
> 
> The only way I found of doing that, was by pre-populating your list with
> an empty element. That way, /numbers[1] calls List#set(0, "123") with no
> exceptions.

Ok.  Does it seem like mitigating this might be a reasonable enhancement for 
JXPath?  I don't know yet how it would work, but I see it as a flag that when 
on, would simply deal with this by extending the list automatically.

> ________________________________
> From: "KARR, DAVID" <dk0...@att.com>
> To: Commons Users List <user@commons.apache.org>; Bruno P. Kinoshita
> <brunodepau...@yahoo.com.br>
> Sent: Thursday, 15 June 2017 3:13 AM
> Subject: RE: [jxpath] How to add an entry to a list?
> 
> 
> 
> > -----Original Message-----
> > From: Bruno P. Kinoshita [mailto:brunodepau...@yahoo.com.br.INVALID]
> > Sent: Wednesday, June 14, 2017 3:18 AM
> > To: Commons Users List <user@commons.apache.org>
> > Subject: Re: [jxpath] How to add an entry to a list?
> >
> > Hi David,
> >
> > Do you have some code you could share? Maybe looking at your code
> others
> > (I would try as well, but can't promise will know how to help) might
> be
> > able to help.
> 
> Thanks for replying.  I posted more detailed code samples on SO:
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__stackoverflow.com_questions_44530112_how-2Dto-2Dget-2Djxpath-2Dto-
> 2Dcleanly-2Dset-2Dlist-2Dcollection-2Dentries&d=DwIFaQ&c=LFYZ-
> o9_HUMeMTSQicvjIg&r=OsTemSXEn-xy2uk0vYF_EA&m=nfT2LEhdW7RV4azBV5z7cO-
> vMKzYetKiHBtDCkt0CoI&s=AXR_qT2s9pltw3Q7IPZwifyv91V3YxSISo5Jt_B3KE4&e=  .
> 
> > ________________________________
> > From: "KARR, DAVID" <dk0...@att.com>
> > To: Commons Users List <user@commons.apache.org>
> > Sent: Wednesday, 14 June 2017 6:11 AM
> > Subject: [jxpath] How to add an entry to a list?
> >
> >
> >
> > If a property in a bean I'm trying to manipulate with jxpath is a
> List,
> > how do I set a value in an entry of that list?
> >
> >
> > I read the info at "Modifying Object Graphs", but it's still not clear
> > from this how I would do this.
> >
> >
> > I've figured out how to get the list created, either with an explicit
> > "setValue()", or with a "createPathAndSetValue()" along with a factory
> > and createObject() method set to look for that property, but if I try
> to
> > set a value into the list, it fails apparently because the list is
> still
> > zero size.
> >
> >
> > The only way I can hack this to work is to initialize the list
> property
> > to an ArrayList with the required number of dummy elements already
> added
> > to it, so the subscript reference works.
> >
> >
> > I'm using JXPath so that I can write tests with a little less
> > boilerplate and focus on pure business logic.  Ideally, I'd like
> JXPath
> > (or perhaps a factory) to do the "obvious stuff".
> >
> >
> >
> > ---------------------------------------------------------------------
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> >
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