| 1 | import { DefaultDataFactory, isQuad, isQuadLike, isTermLike } from "@opennetwork/rdf-data-model";
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| 2 | function hasKey(value, key) {
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| 3 | return (typeof value === "object" &&
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| 4 | value.hasOwnProperty(key));
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| 5 | }
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| 6 | export function isQuadFind(value) {
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| 7 | return (isQuadLike(value) ||
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| 8 | (hasKey(value, "subject") &&
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| 9 | isTermLike(value)) ||
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| 10 | (hasKey(value, "predicate") &&
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| 11 | isTermLike(value)) ||
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| 12 | (hasKey(value, "object") &&
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| 13 | isTermLike(value)) ||
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| 14 | (hasKey(value, "graph") &&
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| 15 | isTermLike(value)));
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| 16 | }
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| 17 | export function isSingleMatcher(find) {
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| 18 | return !!(find.subject &&
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| 19 | find.predicate &&
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| 20 | find.object &&
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| 21 | find.graph);
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| 22 | }
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| 23 | export function isMatch(quad, find) {
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| 24 | const quadInstance = isQuad(quad) ? quad : DefaultDataFactory.fromQuad(quad);
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| 25 | return ((!find.subject || quadInstance.subject.equals(find.subject)) &&
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| 26 | (!find.predicate || quadInstance.predicate.equals(find.predicate)) &&
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| 27 | (!find.object || quadInstance.object.equals(find.object)) &&
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| 28 | (!find.graph || quadInstance.graph.equals(find.graph)));
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| 29 | }
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| 30 | |
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