add auto initializable aggregate feature

[DavidBadura]

fix #769

[DanielBadura]

@fritz-gerneth this should also work for your usecase, right?

[github-actions]

Hello 👋

here is the most recent benchmark result:

SubscriptionEngineBench
=======================

+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                               | memory                                     |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>  | Tag: base       | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 3.331s (±0.00%) | 3.325s (±0.00%) | +0.19%    | 47.555mb        | 48.070mb   | -1.07%      |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+

SimpleSetupBench
================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.068ms (±0.00%)   | 1.299ms (±0.00%)   | -17.81%   | 34.977mb        | 34.977mb   | +0.00%      |
| benchLoad10000Events ()                | 60.879ms (±0.00%)  | 63.311ms (±0.00%)  | -3.84%    | 34.977mb        | 34.977mb   | +0.00%      |
| benchSave1Event ()                     | 1.227ms (±0.00%)   | 1.344ms (±0.00%)   | -8.67%    | 34.977mb        | 34.977mb   | +0.00%      |
| benchSave10000Events ()                | 221.756ms (±0.00%) | 225.066ms (±0.00%) | -1.47%    | 34.977mb        | 34.977mb   | +0.00%      |
| benchSave10000Aggregates ()            | 8.136s (±0.00%)    | 8.112s (±0.00%)    | +0.30%    | 34.977mb        | 34.977mb   | +0.00%      |
| benchSave10000AggregatesTransaction () | 5.183s (±0.00%)    | 5.170s (±0.00%)    | +0.26%    | 34.977mb        | 34.977mb   | +0.00%      |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

CommandToQueryBench
===================

+----------------+------------------+------------------+-----------+-----------------+------------+-------------+
|                | time (kde mode)                                 | memory                                     |
+----------------+------------------+------------------+-----------+-----------------+------------+-------------+
| subject        | Tag: <current>   | Tag: base        | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------+------------------+------------------+-----------+-----------------+------------+-------------+
| benchCreate () | 2.642ms (±0.00%) | 2.583ms (±0.00%) | +2.28%    | 4.866mb         | 4.892mb    | -0.53%      |
| benchUpdate () | 4.101ms (±0.00%) | 3.754ms (±0.00%) | +9.23%    | 4.980mb         | 4.980mb    | -0.01%      |
| benchBoth ()   | 6.778ms (±0.00%) | 6.281ms (±0.00%) | +7.91%    | 5.013mb         | 4.980mb    | +0.68%      |
+----------------+------------------+------------------+-----------+-----------------+------------+-------------+

SnapshotsBench
==============

+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                   | memory                                     |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>    | Tag: base         | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| benchLoad10000EventsMissingSnapshot () | 61.920ms (±0.00%) | 63.447ms (±0.00%) | -2.41%    | 35.047mb        | 34.982mb   | +0.19%      |
| benchLoad10000Events ()                | 1.065ms (±0.00%)  | 1.178ms (±0.00%)  | -9.58%    | 35.047mb        | 34.982mb   | +0.19%      |
+----------------------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+

SplitStreamBench
================

+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                         | time (kde mode)                                     | memory                                     |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                 | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad10000Events () | 5.145ms (±0.00%)   | 5.202ms (±0.00%)   | -1.11%    | 35.582mb        | 35.582mb   | +0.00%      |
| benchSave10000Events () | 340.014ms (±0.00%) | 341.211ms (±0.00%) | -0.35%    | 35.650mb        | 35.650mb   | +0.00%      |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SimpleSetupStreamStoreBench
===========================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.112ms (±0.00%)   | 1.111ms (±0.00%)   | +0.05%    | 35.139mb        | 35.139mb   | +0.00%      |
| benchLoad10000Events ()                | 67.635ms (±0.00%)  | 66.752ms (±0.00%)  | +1.32%    | 35.139mb        | 35.139mb   | +0.00%      |
| benchSave1Event ()                     | 1.488ms (±0.00%)   | 1.292ms (±0.00%)   | +15.13%   | 35.139mb        | 35.139mb   | +0.00%      |
| benchSave10000Events ()                | 290.451ms (±0.00%) | 288.708ms (±0.00%) | +0.60%    | 35.139mb        | 35.139mb   | +0.00%      |
| benchSave10000Aggregates ()            | 8.326s (±0.00%)    | 8.270s (±0.00%)    | +0.68%    | 35.139mb        | 35.139mb   | +0.00%      |
| benchSave10000AggregatesTransaction () | 5.363s (±0.00%)    | 5.397s (±0.00%)    | -0.64%    | 35.139mb        | 35.139mb   | +0.00%      |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

PersonalDataBench
=================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 1.097ms (±0.00%)   | 1.127ms (±0.00%)   | -2.64%    | 35.582mb        | 35.582mb   | +0.00%      |
| benchLoad10000Events ()                | 99.209ms (±0.00%)  | 94.467ms (±0.00%)  | +5.02%    | 35.583mb        | 35.582mb   | +0.00%      |
| benchSave1Event ()                     | 1.671ms (±0.00%)   | 1.786ms (±0.00%)   | -6.44%    | 35.582mb        | 35.582mb   | +0.00%      |
| benchSave10000Events ()                | 245.945ms (±0.00%) | 251.267ms (±0.00%) | -2.12%    | 35.584mb        | 35.584mb   | +0.00%      |
| benchSave10000Aggregates ()            | 12.663s (±0.00%)   | 12.691s (±0.00%)   | -0.22%    | 35.583mb        | 35.583mb   | +0.00%      |
| benchSave10000AggregatesTransaction () | 9.588s (±0.00%)    | 9.598s (±0.00%)    | -0.10%    | 36.042mb        | 36.042mb   | +0.00%      |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SubscriptionEngineBatchBench
============================

+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                                   | memory                                     |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>    | Tag: base         | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 82.096ms (±0.00%) | 81.905ms (±0.00%) | +0.23%    | 35.542mb        | 35.542mb   | +0.00%      |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+

This comment gets update everytime a new commit comes in!