Groups > comp.lang.java.programmer > #5769

Automatic linking of related objects in constructor

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From	"Qu0ll" <Qu0llSixFour@gmail.com>
Newsgroups	comp.lang.java.programmer
Subject	Automatic linking of related objects in constructor
Date	Wed, 29 Jun 2011 19:56:49 +1000
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Suppose you have class A which contains a list of objects of class B and 
that the constructor for B takes in a reference to the A object which is to 
include it in said list.  Is it safe to make a call to A's method addB(B b) 
in that B constructor passing in "this"?  I have heard that it's bad 
practice to "leak" a reference to an object from within its own constructor 
because it may be in an invalid state.

If not, how else can I automatically add the B object to the list in A 
without forcing the client programmer to explicitly call addB() given that 
they have already passed in the B as an argument?

And loving it,

-Qu0ll (Rare, not extinct)
_________________________________________________
Qu0llSixFour@gmail.com
[Replace the "SixFour" with numbers to email me]

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Automatic linking of related objects in constructor "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-06-29 19:56 +1000
  Re: Automatic linking of related objects in constructor "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-06-29 19:58 +1000
  Re: Automatic linking of related objects in constructor Lew <noone@lewscanon.com> - 2011-06-29 07:28 -0400
  Re: Automatic linking of related objects in constructor Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-06-29 08:29 -0400
    Re: Automatic linking of related objects in constructor Tom Anderson <twic@urchin.earth.li> - 2011-06-30 22:51 +0100
      Re: Automatic linking of related objects in constructor supercalifragilisticexpialadiamaticonormalizeringelimatisticantations <supercalifragilisticexpialadiamaticonormalizeringelimatisticantations@averylongandannoyingdomainname.com> - 2011-06-30 18:23 -0400
  Re: Automatic linking of related objects in constructor markspace <-@.> - 2011-06-29 09:17 -0700
  Re: Automatic linking of related objects in constructor supercalifragilisticexpialadiamaticonormalizeringelimatisticantations <supercalifragilisticexpialadiamaticonormalizeringelimatisticantations@averylongandannoyingdomainname.com> - 2011-06-29 19:58 -0400

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