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From: Denis Mekhanikov <dmekhanikov@gmail.com>
Date: Mon, 27 Nov 2017 10:25:12 +0000
Message-ID: <CAMP9FTR2ivXjxMrfm9dvBW9yiixNuGESADV7YmxcGLAqmjYxOw@mail.gmail.com>
Subject: Re: AffinityKey question
To: user@ignite.apache.org
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archived-at: Mon, 27 Nov 2017 10:25:30 -0000

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Mikael,

If you choose to use *AffinityKey* to wrap your keys, then you should use
it everywhere. Because basically it's just a tuple of a key and affinity
key, so this pair is used as a composite key.

You can also annotate some field of you key class with *@AffinityKeyMapped*=
,
instead of using *AffinityKey* wrapper*.*
To see all options, refer to the following page of documentation:
https://apacheignite.readme.io/docs/affinity-collocation

Denis

=D0=BF=D0=BD, 27 =D0=BD=D0=BE=D1=8F=D0=B1. 2017 =D0=B3. =D0=B2 1:19, Mikael=
 <mikael-aronsson@telia.com>:

> I was hoping it would work with either one as it is using equals() for
> comparison and AffinityKey calls the keys hash/equals method.
>
> I guess I have to keep the AffinityKeys stored somewhere to make it work.
>
> Thanks
>
> Mikael
>
> Den 2017-11-26 kl. 21:36, skrev Gaurav Bajaj:
>
> Hi,
>
> You have to alwaya use affinity key to access the Cache for any get, put,
> remove operation you do. Key should be exactly same as you used to put
> value else it won't be able to find it.
>
> Thanks,
> Gaurav
>
> On 26-Nov-2017 3:19 PM, "Mikael" <mikael-aronsson@telia.com> wrote:
>
> Hi!
>
> If I do a cache.put( new AffinityKey( key, value), myvalue); and later on
> want to update the value, do I need do a:
>
> cache.put( new AffinityKey( key, value), newvalue); or can I do:
>
> cache.put( key, newvalue);
>
> If I do a put on a value that is already in the cache using a "non"
> affinity key, will the existing affinity information on the key be lost o=
f
> I don't use the AffinityKey everytime I update the cache ?
>
>
>
>
>

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<div dir=3D"ltr">Mikael,<div><br></div><div>If you choose to use <i>Affinit=
yKey</i>=C2=A0to wrap your keys, then you should use it everywhere. Because=
 basically it&#39;s just a tuple of a key and affinity key, so this pair is=
 used as a composite key.</div><div><br></div><div>You can also annotate so=
me field of you key class with=C2=A0<i>@AffinityKeyMapped</i>, instead of u=
sing <i>AffinityKey</i> wrapper<i>.</i></div><div>To see all options, refer=
 to the following page of documentation:=C2=A0<a href=3D"https://apacheigni=
te.readme.io/docs/affinity-collocation">https://apacheignite.readme.io/docs=
/affinity-collocation</a></div><div><br></div><div>Denis</div><br><div clas=
s=3D"gmail_quote"><div dir=3D"ltr">=D0=BF=D0=BD, 27 =D0=BD=D0=BE=D1=8F=D0=
=B1. 2017 =D0=B3. =D0=B2 1:19, Mikael &lt;<a href=3D"mailto:mikael-aronsson=
@telia.com" target=3D"_blank">mikael-aronsson@telia.com</a>&gt;:<br></div><=
/div><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"=
margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
 =20
   =20
 =20
  <div text=3D"#000000" bgcolor=3D"#FFFFFF">
    <p>I was hoping it would work with either one as it is using
      equals() for comparison and AffinityKey calls the keys hash/equals
      method.</p>
    <p>I guess I have to keep the AffinityKeys stored somewhere to make
      it work.</p>
    <p>Thanks</p></div><div text=3D"#000000" bgcolor=3D"#FFFFFF">
    <p>Mikael<br>
    </p></div><div text=3D"#000000" bgcolor=3D"#FFFFFF">
    <br>
    <div class=3D"m_-7653919236038344701m_-596863292133225865moz-cite-prefi=
x">Den 2017-11-26 kl. 21:36, skrev Gaurav
      Bajaj:<br>
    </div>
    <blockquote type=3D"cite">
      <div dir=3D"auto">Hi,
        <div dir=3D"auto"><br>
        </div>
        <div dir=3D"auto">You have to alwaya use affinity key to access
          the Cache for any get, put, remove operation you do. Key
          should be exactly same as you used to put value else it won&#39;t
          be able to find it.</div>
        <div dir=3D"auto"><br>
        </div>
        <div dir=3D"auto">Thanks,</div>
        <div dir=3D"auto">Gaurav</div>
      </div>
      <div class=3D"gmail_extra"><br>
        <div class=3D"gmail_quote">On 26-Nov-2017 3:19 PM, &quot;Mikael&quo=
t; &lt;<a href=3D"mailto:mikael-aronsson@telia.com" target=3D"_blank">mikae=
l-aronsson@telia.com</a>&gt;
          wrote:<br type=3D"attribution">
          <blockquote class=3D"m_-7653919236038344701m_-596863292133225865q=
uote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1e=
x">Hi!<br>
            <br>
            If I do a cache.put( new AffinityKey( key, value), myvalue);
            and later on want to update the value, do I need do a:<br>
            <br>
            cache.put( new AffinityKey( key, value), newvalue); or can I
            do:<br>
            <br>
            cache.put( key, newvalue);<br>
            <br>
            If I do a put on a value that is already in the cache using
            a &quot;non&quot; affinity key, will the existing affinity info=
rmation
            on the key be lost of I don&#39;t use the AffinityKey everytime
            I update the cache ?<br>
            <br>
            <br>
          </blockquote>
        </div>
        <br>
      </div>
    </blockquote>
    <br>
  </div></blockquote></div></div>

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