-
Notifications
You must be signed in to change notification settings - Fork 14
/
EpistemicAxiomRemover.java
79 lines (72 loc) · 3.36 KB
/
EpistemicAxiomRemover.java
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
71
72
73
74
75
76
77
78
79
package cz.cvut.kbss.ontodriver.jena;
import cz.cvut.kbss.ontodriver.descriptor.AxiomDescriptor;
import cz.cvut.kbss.ontodriver.jena.connector.StorageConnector;
import cz.cvut.kbss.ontodriver.jena.util.JenaUtils;
import cz.cvut.kbss.ontodriver.model.Assertion;
import cz.cvut.kbss.ontodriver.model.NamedResource;
import cz.cvut.kbss.ontodriver.model.Value;
import org.apache.jena.rdf.model.Property;
import org.apache.jena.rdf.model.Resource;
import org.apache.jena.rdf.model.ResourceFactory;
import java.net.URI;
import java.util.Map;
import java.util.Set;
/**
* This class performs an epistemic removal of statements.
* <p/>
* Epistemic remove means that only information known to the application is
* deleted. The assertions in the descriptor represent this information. Thus,
* only statements representing these properties are removed from the ontology. Note that if the
* descriptor contains an unspecified property assertion, all property
* assertions related to the subject individual are removed from the property's
* context.
*/
class EpistemicAxiomRemover {
private final StorageConnector connector;
EpistemicAxiomRemover(StorageConnector connector) {
this.connector = connector;
}
/**
* Removes statements corresponding to the subject and properties specified by the descriptor.
*
* @param descriptor Descriptor of statements to remove
*/
void remove(AxiomDescriptor descriptor) {
final Resource subject = ResourceFactory.createResource(descriptor.getSubject().getIdentifier().toString());
descriptor.getAssertions().stream().filter(a -> !a.isInferred()).forEach(assertion -> {
final URI context = descriptor.getAssertionContext(assertion);
final Property property = ResourceFactory.createProperty(assertion.getIdentifier().toString());
if (context != null) {
connector.remove(subject, property, null, context.toString());
} else {
connector.remove(subject, property, null);
}
});
}
/**
* Removes statements corresponding to the specified values.
* <p>
* This version removes precisely statements whose subject, property and object match the specified data.
*
* @param subject Statement subject
* @param properties Assertions to values
* @param context Context from which to remove the statements
*/
void remove(NamedResource subject, Map<Assertion, Set<Value<?>>> properties, URI context) {
final Resource resource = ResourceFactory.createResource(subject.getIdentifier().toString());
if (context != null) {
final String strCtx = context.toString();
properties.forEach((assertion, values) -> {
final Property property = ResourceFactory.createProperty(assertion.getIdentifier().toString());
values.forEach(value -> connector
.remove(resource, property, JenaUtils.valueToRdfNode(assertion, value), strCtx));
});
} else {
properties.forEach((assertion, values) -> {
final Property property = ResourceFactory.createProperty(assertion.getIdentifier().toString());
values.forEach(
value -> connector.remove(resource, property, JenaUtils.valueToRdfNode(assertion, value)));
});
}
}
}