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* Helps keeping variable scoping clear by limiting variable scopes to the body
of the corresponding lambda.
* Overloads for convenience where variables are automatically created for lambda
parameters.
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* Add NodeFunctionView for symbols that hold function-like (single
associated object for each key) relations as integer values for performance.
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Make sure we obey the REUSE (https://reuse.software) specification and the
origin, copyright owner, and license of all files are clearly marked.
The whole project is under the EPL-2.0, except for trivial files where copyright
is not applicable that are marked with the CC0-1.0 license. Moreover, code
included from third parties is also available under the respective license.
chore: add CONTRIBUTORS.md
List all authors and supporting organizations in accordance with the REUSE
specification.
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* Directly transform VIATRA tuples into Refinery tuples, since creating
the additional wrapper object doesn't save any memory.
* Adds static arity Tuple3 and Tuple4 implementations to be more
aligned with VIATRA internals and save memory for queries with up to
4 parameters.
* Makes sure no new objects are allocated (for varargs handling) when a
static arity tuple is hashed.
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* Implement data terms for computations in queries.
* Function-like queries with computed results.
* Improved query evaluation, including positive and negative diagonal
cosntraints.
* Preliminary local search support.
* Changes to the DNF representation for count and aggregation support.
feat: terms wip
feat: query terms wip
feat: query evaluation, diagonal constraints, local search wip
fix reasoning compilation wip
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Accessing VIATRA result sets through IQueryResultProvider requires a lot
of indirection, allocations, and locking.
We use reflection instead to have direct access to the underlying
Indexer instead.
Unfortunately, projection to arbitrary tuple masks (with wildcard
entries in a tuple) is completely broken in VIATRA when RETE update
propagation is delayed. While a new, ad-hoc projection indexer gets
added to the RETE net immediately, it is not populated with the
projection results until updates are flushed in the query engine.
Therefore, when encountering an ad-hoc projection for the first time,
the projection results will always be empty (thus usually out of date).
While declaring the desired projections ahead of time would be a
possible solution, for now, we completely remove ad-hoc projection
support. If projections are needed on the ModelQuery level, we should
create an API for declaring projections for each registered Dnf.
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Use PVisibility.EMBEDDED helper patterns to avoid superfluous production
nodes in the Rete net.
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Use Adapters to simplify API usage.
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Prefers sealed non-generic interfaces over wildcard types to avoid
confusion about method return types, especially in collections
(see SonarQube rule java:S1452).
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We will have to implement counting in DNF queries in another way.
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Restore count != capability.
Still needs semantics and tests for count atoms over partial models.
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Kristóf Marussy