ontology-classes.component.ts
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	import { Component, Input, OnInit } from '@angular/core';
	import { OntologyQueryService } from './ontology-query.service';
	import { DataMapping, QueryDataMapping, Ontology, OntologyBearer } from './models';
	import { SparqlParser } from './sparqljs';
	import { OntologyRetriever } from './ontology-retriever';

	@Component({
	selector: 'ontology-classes',
	template: `<ontology-display *ngIf="dataMappings.length > 0" [dataMappings]="dataMappings \| sortSubjectsAlpha"></ontology-display>`,
	styleUrls: []
	})
	export class OntologyClassesComponent extends OntologyRetriever {
	query: string = `
	PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
	PREFIX owl: <http://www.w3.org/2002/07/owl#>

	SELECT ?class ?label ?comment ?superClass WHERE {
	?class a owl:Class;
	rdfs:isDefinedBy ?ontology.
	OPTIONAL { ?class rdfs:label ?label }
	OPTIONAL { ?class rdfs:comment ?comment }
	OPTIONAL { ?class rdfs:subClassOf ?superClass.
	FILTER(!isBlank(?superClass))
	FILTER (?class != ?superClass)
	}
	}`

	constructor(protected queryService: OntologyQueryService) {
	super(queryService);
	}

	}