This is what I did:
this.internalId = RandomStringUtils.randomAlphanumeric(8);
Some Eclipse magic:
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((internalId == null) ? 0 :
internalId.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
RawSession other = (RawSession) obj;
if (internalId == null) {
if (other.internalId != null)
return false;
} else if (!internalId.equals(other.internalId))
return false;
return true;
}
> Gesendet: Freitag, 06. Februar 2015 um 16:47 Uhr
> Von: "James Carman" <[email protected]>
> An: "Commons Users List" <[email protected]>
> Betreff: Re: [POOL2] Pooling mutable objects
>
> Or just let your IDE generate the methods.
>
>
> On Fri, Feb 6, 2015 at 9:05 AM, William Speirs <[email protected]> wrote:
> > I'd think adding a UUID then overriding equals and hashCode would do the
> > trick. To aid you in doing this, commons-lang has EqualsBuilder [1] and
> > HashCodeBuilder [2], I highly recommend using them.
> >
> > Bill-
> >
> >
> > [1]
> > https://commons.apache.org/proper/commons-lang/javadocs/api-3.3.2/org/apache/commons/lang3/builder/EqualsBuilder.html
> >
> > [2]
> > https://commons.apache.org/proper/commons-lang/javadocs/api-3.3.2/org/apache/commons/lang3/builder/HashCodeBuilder.html
> >
> > On Fri, Feb 6, 2015 at 9:00 AM, Michael Osipov <[email protected]> wrote:
> >
> >> Hi folks,
> >>
> >> I am developing a session pool for an HTTP backend which is requested with
> >> the fabulous HttpClient.
> >>
> >> The session object is this:
> >>
> >> public class RawSession {
> >>
> >> private CookieStore cookieStore;
> >> private String logId;
> >> private MutableInt requestId;
> >> private String clientId;
> >> private String serverId;
> >>
> >> }
> >>
> >> There won't be any setters but as you see, the cookie store and mutable
> >> int might change.
> >> Additionally, I did not implement any custom equals and hashCode methods.
> >>
> >> I have searched the docs and the found and did not find any clear answer
> >> which says
> >> that pooled objects have to be immutable. Though, I have found POOL-283
> >> and POOL-284 which
> >> led me to the conclusion that this is a problem because the objects are
> >> stored in a map
> >> which relies on equals and hashCode.
> >>
> >> Does this ultimately mean that I have to override equals and hashCode and
> >> provide some internal,
> >> immutable value something like a UUID? Alternatively, I could retrieve the
> >> JSESSIONID from the
> >> cookie store and use this as a unique value.
> >>
> >> Thanks,
> >>
> >> Michael
> >>
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> >> For additional commands, e-mail: [email protected]
> >>
> >>
>
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