rewriting internal class data page data getter as data getter
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/* $This file is distributed under the terms of the license in /doc/license.txt$ */
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package edu.cornell.mannlib.vitro.webapp.utils.dataGetter;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import javax.servlet.ServletContext;
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import org.apache.commons.lang.StringUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.json.JSONObject;
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import com.hp.hpl.jena.ontology.OntModel;
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import com.hp.hpl.jena.query.Query;
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import com.hp.hpl.jena.query.QueryExecution;
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import com.hp.hpl.jena.query.QueryExecutionFactory;
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import com.hp.hpl.jena.query.QueryFactory;
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import com.hp.hpl.jena.query.QuerySolution;
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import com.hp.hpl.jena.query.QuerySolutionMap;
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import com.hp.hpl.jena.query.ResultSet;
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import com.hp.hpl.jena.rdf.model.Model;
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import com.hp.hpl.jena.rdf.model.RDFNode;
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import com.hp.hpl.jena.rdf.model.ResourceFactory;
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import com.hp.hpl.jena.rdf.model.Statement;
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import com.hp.hpl.jena.rdf.model.StmtIterator;
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import edu.cornell.mannlib.vitro.webapp.beans.Individual;
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import edu.cornell.mannlib.vitro.webapp.beans.VClass;
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import edu.cornell.mannlib.vitro.webapp.beans.VClassGroup;
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import edu.cornell.mannlib.vitro.webapp.controller.VitroRequest;
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import edu.cornell.mannlib.vitro.webapp.controller.freemarker.UrlBuilder;
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import edu.cornell.mannlib.vitro.webapp.dao.DisplayVocabulary;
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import edu.cornell.mannlib.vitro.webapp.dao.PageDao;
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import edu.cornell.mannlib.vitro.webapp.dao.VitroVocabulary;
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import edu.cornell.mannlib.vitro.webapp.dao.jena.VClassGroupCache;
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import edu.cornell.mannlib.vitro.webapp.web.templatemodels.VClassGroupTemplateModel;
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import edu.cornell.mannlib.vitro.webapp.dao.jena.ModelContext;
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import edu.cornell.mannlib.vitro.webapp.utils.dataGetter.IndividualsForClassesDataGetter;
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/**
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* This will pass these variables to the template:
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* classGroupUri: uri of the classgroup associated with this page.
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* vClassGroup: a data structure that is the classgroup associated with this page.
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*/
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public class InternalClassesDataGetter extends IndividualsForClassesDataGetter{
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private static final Log log = LogFactory.getLog(InternalClassesDataGetter.class);
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/**
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* Constructor with display model and data getter URI that will be called by reflection.
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*/
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public InternalClassesDataGetter(Model displayModel, String dataGetterURI){
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super(displayModel, dataGetterURI);
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}
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//Use different template name for internal class template
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@Override
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protected void setTemplateName() {
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super.restrictClassesTemplateName = "internalClass";
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}
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//Retrieve classes and check whether or not page to be filtered by internal class only
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@Override
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protected Map<String, Object> getClassIntersectionsMap(Model displayModel) {
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Map<String, Object> classesAndRestrictions = new HashMap<String, Object>();
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QuerySolutionMap initialBindings = new QuerySolutionMap();
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initialBindings.add("dataGetterUri", ResourceFactory.createResource(this.dataGetterURI));
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List<String> classes = new ArrayList<String>();
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displayModel.enterCriticalSection(false);
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try{
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Query individualsForClassesInternalQuery = QueryFactory.create(individualsForClassesInternalQueryString);
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QueryExecution qexec = QueryExecutionFactory.create( individualsForClassesInternalQuery, displayModel , initialBindings);
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try{
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ResultSet resultSet = qexec.execSelect();
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while(resultSet.hasNext()){
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QuerySolution soln = resultSet.next();
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String dg = DataGetterUtils.nodeToString(soln.get("dg"));
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classes.add(DataGetterUtils.nodeToString(soln.get("class")));
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//node to string will convert null to empty string
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String isInternal = DataGetterUtils.nodeToString(soln.get("isInternal"));
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if(!isInternal.isEmpty()) {
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log.debug("Internal value is "+ isInternal);
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//Retrieve and add internal class
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classesAndRestrictions.put("isInternal", isInternal);
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}
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}
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if( classes.size() == 0 ){
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log.debug("No classes defined in display model for "+ this.dataGetterURI);
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return null;
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}
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classesAndRestrictions.put("classes", classes);
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return classesAndRestrictions;
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}finally{
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qexec.close();
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}
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}finally{
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displayModel.leaveCriticalSection();
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}
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}
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//Retrieve current internal class uri to restrict by
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@Override
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protected List<String> retrieveRestrictClasses(
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ServletContext context, Map<String, Object> classIntersectionsMap) {
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List<String> restrictClasses = new ArrayList<String>();
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String internalClass = (String) classIntersectionsMap.get("isInternal");
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//if internal class restriction specified and is true
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if(internalClass != null && internalClass.equals("true")) {
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//Get internal class
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Model mainModel = ModelContext.getBaseOntModelSelector(context).getTBoxModel();;
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StmtIterator internalIt = mainModel.listStatements(null, ResourceFactory.createProperty(VitroVocabulary.IS_INTERNAL_CLASSANNOT), (RDFNode) null);
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//Checks for just one statement
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if(internalIt.hasNext()){
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Statement s = internalIt.nextStatement();
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//The class IS an internal class so the subject is what we're looking for
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String internalClassUri = s.getSubject().getURI();
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log.debug("Found internal class uri " + internalClassUri);
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restrictClasses.add(internalClassUri);
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}
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}
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return restrictClasses;
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}
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@Override
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public String getType(){
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return DataGetterUtils.generateDataGetterTypeURI(InternalClassesDataGetter.class.getName());
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}
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static final protected String individualsForClassesInternalQueryString =
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DataGetterUtils.prefixes + "\n" +
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"SELECT?class ?isInternal WHERE {\n" +
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" ?dataGetterUri <" + DisplayVocabulary.GETINDIVIDUALS_FOR_CLASS + "> ?class . \n" +
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" OPTIONAL { ?dataGetterUri <"+ DisplayVocabulary.RESTRICT_RESULTS_BY_INTERNAL + "> ?isInternal } .\n" +
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"} \n" ;
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}
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