[b7f8ba]: src / main / java / net / timbusproject / dpes / pi / kbserver / beans / QueryBean.java History

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/**

 * Copyright (c) 2013/2014 Verein zur Foerderung der IT-Sicherheit in Oesterreich (SBA).

 * The work has been developed in the TIMBUS Project and the above-mentioned are Members of the TIMBUS Consortium.

 * TIMBUS is supported by the European Union under the 7th Framework Programme for research and technological

 * development and demonstration activities (FP7/2007-2013) under grant agreement no. 269940.

 *

 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with

 * the License. You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on

 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including without

 * limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTIBITLY, or FITNESS FOR A PARTICULAR

 * PURPOSE. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise,

 * unless required by applicable law or agreed to in writing, shall any Contributor be liable for damages, including

 * any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this

 * License or out of the use or inability to use the Work.

 * See the License for the specific language governing permissions and limitation under the License.

 */

package net.timbusproject.dpes.pi.kbserver.beans;



import com.hp.hpl.jena.query.QuerySolution;

import org.sba_research.timbus.kb.FormatMigrationOption;

import org.sba_research.timbus.kb.ToolKnowledgeBase;

import org.sba_research.timbus.kb.timbus.TimbusToolKnowledgeBase;

import org.sbaresearch.owl.JenaQueryFacade;



import javax.faces.application.FacesMessage;

import javax.faces.bean.ApplicationScoped;

import javax.faces.bean.ManagedBean;

import javax.faces.context.FacesContext;

import java.io.Serializable;

import java.util.ArrayList;

import java.util.List;



import static ch.lambdaj.Lambda.extract;

import static ch.lambdaj.Lambda.filter;

import static ch.lambdaj.Lambda.on;

import static org.hamcrest.Matchers.startsWith;



@ManagedBean

@ApplicationScoped

public class QueryBean implements Serializable {

    public static final String ONTOLOGY_FILE_NAME = "/toolKB_instance.owl";



    private final ToolKnowledgeBase toolKnowledgeBase;

    private final JenaQueryFacade queryFacade;

    private String queryString;

    private final List<String> formatIDs;

    private final List<String> toolNames;



    public List<String> getQueryResult() {

        return queryResult;

    }



    public void setQueryResult(List<String> queryResult) {

        this.queryResult = queryResult;

    }



    private List<String> queryResult = new ArrayList<String>();



    public QueryBean() {

        queryFacade = new JenaQueryFacade(JenaQueryFacade.getModelFromPath(getClass().getResource(ONTOLOGY_FILE_NAME).getFile(), true));

        toolKnowledgeBase = new TimbusToolKnowledgeBase(queryFacade);

        formatIDs = toolKnowledgeBase.getAllFormatIDs();

        toolNames = getAllToolNames();

    }



    public String getQueryString() {

        return queryString;

    }



    public void setQueryString(String queryString) {

        this.queryString = queryString;

    }



    public void toolReplacement() {

        try {

            queryResult = toolKnowledgeBase.getAlternativeTools(queryString);

        } catch (Exception e) {

            handleError(e);

        }

    }



    private void handleError(Exception e) {

        FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, "Query Error", e.getMessage()));

        queryResult = new ArrayList<>();

    }



    public void formatReplacement() {

        try {

            List<FormatMigrationOption> convertFromMigrationOptions = toolKnowledgeBase.getConvertFromMigrationOptions(queryString);

            queryResult = extract(convertFromMigrationOptions, on(FormatMigrationOption.class).getFormat());

        } catch (Exception e) {

            handleError(e);

        }

    }



    public void rawQuery() {

        try {

            List<QuerySolution> query = queryFacade.query(queryString);

            queryResult = extract(query, on(QuerySolution.class).toString());

        } catch (Exception e) {

            handleError(e);

        }

    }



    public List<String> completeQuery(String query) {

        List<String> result = filter(startsWith(query), formatIDs);

        result.addAll(filter(startsWith(query), toolNames));

        return result;

    }



    // TODO: move to kblib

    public List<String> getAllToolNames() {

        String queryString = "" +

                "PREFIX kb: <http://timbus.teco.edu/ontologies/preservationIdentifier/toolKB.owl#>\n" +

                "\n" +

                "SELECT ?tool\n" +

                "{\n" +

                "    ?tool a kb:Tool .\n" +

                "}\n" +

                "GROUP BY ?tool";

        return JenaQueryFacade.removeNamespace(JenaQueryFacade.extractColumn(queryFacade.query(queryString), "tool"));

    }

}