1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*******************************************************************************
* Copyright (c) 2010-2016, Gabor Bergmann, IncQueryLabs Ltd.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.localsearch.matcher.integration;
import tools.refinery.viatra.runtime.localsearch.planner.cost.ICostFunction;
import tools.refinery.viatra.runtime.localsearch.planner.cost.impl.IndexerBasedConstraintCostFunction;
import tools.refinery.viatra.runtime.matchers.backend.ICallDelegationStrategy;
import tools.refinery.viatra.runtime.matchers.backend.QueryHintOption;
import tools.refinery.viatra.runtime.matchers.psystem.rewriters.IFlattenCallPredicate;
/**
*
* @author Gabor Bergmann
* @since 1.5
* @noinstantiate This class is not intended to be instantiated by clients.
*/
public final class LocalSearchHintOptions {
private LocalSearchHintOptions() {
// Private constructor for utility class
}
public static final QueryHintOption<Boolean> USE_BASE_INDEX =
hintOption("USE_BASE_INDEX", true);
// This key can be used to influence the core planner algorithm
public static final QueryHintOption<Integer> PLANNER_TABLE_ROW_COUNT =
hintOption("PLANNER_TABLE_ROW_COUNT", 4);
/**
* Cost function to be used by the planner. Must implement {@link ICostFunction}
* @since 1.4
*/
public static final QueryHintOption<ICostFunction> PLANNER_COST_FUNCTION =
hintOption("PLANNER_COST_FUNCTION", new IndexerBasedConstraintCostFunction());
/**
* Predicate to decide whether to flatten specific positive pattern calls {@link IFlattenCallPredicate}
* @since 1.4
*/
public static final QueryHintOption<IFlattenCallPredicate> FLATTEN_CALL_PREDICATE =
hintOption("FLATTEN_CALL_PREDICATE", new DontFlattenDisjunctive());
/**
* Strategy to decide how hints (most importantly, backend selection) propagate across pattern calls.
* Must implement {@link ICallDelegationStrategy}.
* @since 2.1
*/
public static final QueryHintOption<ICallDelegationStrategy> CALL_DELEGATION_STRATEGY =
hintOption("CALL_DELEGATION_STRATEGY", ICallDelegationStrategy.FULL_BACKEND_ADHESION);
/**
* A provider of expected adornments {@link IAdornmentProvider}.
*
* The safe default is {@link AllValidAdornments};
* however, the generic backend variant may safely use {@link LazyPlanningAdornments} instead.
*
* @since 1.5
*/
public static final QueryHintOption<IAdornmentProvider> ADORNMENT_PROVIDER =
hintOption("ADORNMENT_PROVIDER", new AllValidAdornments());
// internal helper for conciseness
private static <T, V extends T> QueryHintOption<T> hintOption(String hintKeyLocalName, V defaultValue) {
return new QueryHintOption<>(LocalSearchHintOptions.class, hintKeyLocalName, defaultValue);
}
}
|
