Well it's more because I have to inject the ignite instance into my cache
"repository" which abstracts away the IgniteCache only.
And if the builder is not an expensive operation I guess I can find a way
to pass the ignite instance down into the cache repo implementation.
On Wed, 15 Jul 2020 at 17:45, Evgenii Zhuravlev <e.zhuravlev...@gmail.com>
wrote:
> John,
>
> Then you should just get a new builder every time when you need it:
> myIgniteInstance.binary().builder("MyKey"). I don't see why you need to
> reuse builder from multiple threads here.
>
> Evgenii
>
> ср, 15 июл. 2020 г. в 14:34, John Smith <java.dev....@gmail.com>:
>
>> I'm using it in Vertx.io. if you understand the concept a bit. I have 2
>> vertices.
>>
>> I create 2 instances of BinaryObjectBuilder
>>
>> Each builder creates a new object (binary key) per "event" that comes in.
>>
>> So if I get 2 events then each builder will build one...
>>
>> If I get 3 events, the 3rd event will wait until one of the event loops
>> can process the next event...
>>
>>
>>
>> On Wed., Jul. 15, 2020, 3:43 p.m. Evgenii Zhuravlev, <
>> e.zhuravlev...@gmail.com> wrote:
>>
>>> 1. This builder can be used for making one object, do you want to
>>> construct one object from multiple threads?
>>> 2. No, you still can work with BinaryObjects instead of actual classes.
>>>
>>> Evgenii
>>>
>>> ср, 15 июл. 2020 г. в 08:50, John Smith <java.dev....@gmail.com>:
>>>
>>>> Hi Evgenii, it works good. I have two questions...
>>>>
>>>> 1- Is the BinaryObjectBuilder obtained from
>>>> myIgniteInstance.binary().builder("MyKey"); thread safe? Can I pass the
>>>> same builder to multiple instances of my cache "repository" wrapper I
>>>> wrote?
>>>> 2- If we want to use the actual MyKey class then I suppose that needs
>>>> to be in the classpath on all nodes?
>>>>
>>>> On Wed, 15 Jul 2020 at 10:43, John Smith <java.dev....@gmail.com>
>>>> wrote:
>>>>
>>>>> Ok I will try it...
>>>>>
>>>>> On Tue, 14 Jul 2020 at 22:34, Evgenii Zhuravlev <
>>>>> e.zhuravlev...@gmail.com> wrote:
>>>>>
>>>>>> John,
>>>>>>
>>>>>> It's not necessary to have class at all, you can specify any type,
>>>>>> you just need to use this type when creating binary object for this key.
>>>>>>
>>>>>> вт, 14 июл. 2020 г. в 17:50, John Smith <java.dev....@gmail.com>:
>>>>>>
>>>>>>> I just used two columns as primary key...
>>>>>>>
>>>>>>> Of I use key_type and specify a type does that class need to exist
>>>>>>> in the class path of the server nodes?
>>>>>>>
>>>>>>> Like if I have
>>>>>>>
>>>>>>> class MyKeyClass {
>>>>>>> Integer col1;
>>>>>>> Integer col2;
>>>>>>> }
>>>>>>>
>>>>>>> Does this class need to be loaded in all nodes or ignite can figure
>>>>>>> it out and marshal it?
>>>>>>>
>>>>>>> On Tue., Jul. 14, 2020, 6:50 p.m. Evgenii Zhuravlev, <
>>>>>>> e.zhuravlev...@gmail.com> wrote:
>>>>>>>
>>>>>>>> Hi John,
>>>>>>>>
>>>>>>>> To do this, you need to create a key object with the same type as
>>>>>>>> you have for the table. If you don't specify KEY_TYPE in the create
>>>>>>>> table
>>>>>>>> script, it will be generated automatically. I would recommend to
>>>>>>>> specify it
>>>>>>>> for the command(just type name, if you don't have a class) and, when
>>>>>>>> you
>>>>>>>> need to get data using key-value API, just create a binary object of
>>>>>>>> this
>>>>>>>> type with these fields:
>>>>>>>> https://www.gridgain.com/docs/latest/developers-guide/key-value-api/binary-objects#creating-and-modifying-binary-objects
>>>>>>>>
>>>>>>>> Evgenii
>>>>>>>>
>>>>>>>> вт, 14 июл. 2020 г. в 07:18, John Smith <java.dev....@gmail.com>:
>>>>>>>>
>>>>>>>>> Hi, I have an SQL table
>>>>>>>>>
>>>>>>>>> create table if not exists my_table (
>>>>>>>>> column1 int,
>>>>>>>>> column2 int,
>>>>>>>>> column3 varchar(16),
>>>>>>>>> PRIMARY KEY (column1, column2)
>>>>>>>>> ) with "template=replicatedTpl";
>>>>>>>>>
>>>>>>>>> and I'm creating my near cache as follows...
>>>>>>>>>
>>>>>>>>> IgniteCache<Integer, String> myCache;
>>>>>>>>>
>>>>>>>>> NearCacheConfiguration<Integer, String> nearConfig = new
>>>>>>>>> NearCacheConfiguration<>();
>>>>>>>>> nearConfig.setNearEvictionPolicyFactory(new
>>>>>>>>> LruEvictionPolicyFactory<>(1024));
>>>>>>>>>
>>>>>>>>> myCache =
>>>>>>>>> this.ignite.getOrCreateNearCache(SQL_PUBLIC_MY_TABLE, nearConfig)
>>>>>>>>> .withExpiryPolicy(new AccessedExpiryPolicy(new
>>>>>>>>> Duration(TimeUnit.HOURS, 1)));
>>>>>>>>>
>>>>>>>>> So if I use myCache.get()...
>>>>>>>>>
>>>>>>>>> 1- How do I specify the primary key if it's 2 columns?
>>>>>>>>> 2- I assume the data will be put in near cache?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
