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Plug-in for the Protege Desktop ontology editor that provides support for writing and executing SPARQL queries.

There is a newer version: 3.0.0

package org.protege.editor.owl.rdf;

import org.protege.editor.core.ui.error.ErrorLogPanel;
import org.protege.editor.owl.rdf.repository.BasicSparqlReasonerFactory;
import org.protege.editor.owl.ui.renderer.OWLCellRenderer;
import org.protege.editor.owl.ui.table.BasicOWLTable;
import org.protege.editor.owl.ui.view.AbstractOWLViewComponent;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Collections;
import java.util.List;

public class SparqlQueryView extends AbstractOWLViewComponent {
	private static final long serialVersionUID = -1370725700740073290L;
	
	private SparqlReasoner reasoner;
	private JTextPane queryPane;
	private JButton executeQuery;
	private SwingResultModel resultModel;

	@Override
	protected void initialiseOWLView() throws Exception {
		initializeReasoner();
		setLayout(new BorderLayout());
		add(createCenterComponent(), BorderLayout.CENTER);
		add(createBottomComponent(), BorderLayout.SOUTH);
	}
	
	private void initializeReasoner() {
		try {
			List plugins = Collections.singletonList((SparqlInferenceFactory) new BasicSparqlReasonerFactory());
			reasoner = plugins.iterator().next().createReasoner(getOWLModelManager().getOWLOntologyManager());
			reasoner.precalculate();
		}
		catch (SparqlReasonerException e) {
			ErrorLogPanel.showErrorDialog(e);
		}
	}
	
	private JComponent createCenterComponent() {
		JPanel panel = new JPanel();
		panel.setLayout(new GridLayout(0,1));
		queryPane = new JTextPane();
		queryPane.setText(reasoner.getSampleQuery());
		panel.add(new JScrollPane(queryPane, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER));
		resultModel = new SwingResultModel();
		BasicOWLTable results = new BasicOWLTable(resultModel) {
			private static final long serialVersionUID = 9143285439978520141L;

			@Override
			protected boolean isHeaderVisible() {
				return true;
			}
		};
		OWLCellRenderer renderer = new OWLCellRenderer(getOWLEditorKit());
		renderer.setWrap(false);
		results.setDefaultRenderer(Object.class, renderer);
		JScrollPane scrollableResults = new JScrollPane(results);
		panel.add(scrollableResults);
		return panel;
	}
	
	private JComponent createBottomComponent() {
		JPanel panel = new JPanel();
		panel.setLayout(new FlowLayout(FlowLayout.CENTER));
		executeQuery = new JButton("Execute");
		executeQuery.addActionListener(new ActionListener() {
			
			@Override
			public void actionPerformed(ActionEvent e) {
				try {
					String query = queryPane.getText();
					SparqlResultSet result = reasoner.executeQuery(query);
					resultModel.setResults(result);
				}
				catch (SparqlReasonerException ex) {
					ErrorLogPanel.showErrorDialog(ex);
					JOptionPane.showMessageDialog(getOWLWorkspace(), ex.getMessage() + "\nSee the logs for more information.");
				}
			}
		});
		panel.add(executeQuery);
		return panel;
	}

	@Override
	protected void disposeOWLView() {
		if (reasoner != null) {
			reasoner.dispose();
			reasoner = null;
		}
	}
	
	

}