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hjkhjk54 2011-06-24 17:12:51 +00:00
parent 843e09a451
commit 1fe20cde78
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webapp/src/edu/cornell/mannlib/vitro/webapp/utils/pageDataGetter/ClassIntersectionDataGetter.java
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/* $This file is distributed under the terms of the license in /doc/license.txt$ */
package edu.cornell.mannlib.vitro.webapp.utils.pageDataGetter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import edu.cornell.mannlib.vitro.webapp.beans.Individual;
import edu.cornell.mannlib.vitro.webapp.beans.VClass;
import edu.cornell.mannlib.vitro.webapp.beans.VClassGroup;
import edu.cornell.mannlib.vitro.webapp.controller.VitroRequest;
import edu.cornell.mannlib.vitro.webapp.controller.freemarker.IndividualListController;
import edu.cornell.mannlib.vitro.webapp.controller.freemarker.IndividualListController.PageRecord;
import edu.cornell.mannlib.vitro.webapp.dao.DisplayVocabulary;
import edu.cornell.mannlib.vitro.webapp.dao.jena.VClassGroupCache;
import edu.cornell.mannlib.vitro.webapp.web.templatemodels.VClassGroupTemplateModel;
import edu.cornell.mannlib.vitro.webapp.web.templatemodels.individual.ListedIndividualTemplateModel;
import freemarker.ext.beans.BeansWrapper;
import freemarker.template.TemplateModel;
/**
* This will pass these variables to the template:
* classGroupUri: uri of the classgroup associated with this page.
* vClassGroup: a data structure that is the classgroup associated with this page.
*/
public class ClassIntersectionDataGetter implements PageDataGetter{
private static final Log log = LogFactory.getLog(ClassIntersectionDataGetter.class);
public Map<String,Object> getData(ServletContext context, VitroRequest vreq, String pageUri, Map<String, Object> page, String type ){
HashMap<String, Object> data = new HashMap<String,Object>();
List<String> classIntersections = vreq.getWebappDaoFactory().getPageDao().getClassIntersections(pageUri);
data.put("classIntersections", classIntersections);
//Use Individual List Controller to get all the individuals and related data
String alpha = IndividualListController.getAlphaParameter(vreq);
int pageParam = IndividualListController.getPageParameter(vreq);
try{
Map<String, Object> results = IndividualListController.getResultsForVClassIntersections(classIntersections, pageParam, alpha, vreq.getWebappDaoFactory().getIndividualDao(), context);
data.putAll(results);
//NOTE: Below is copied from Individual List Controller's processing as some of these are used in the template
//below may not be necessary if using a different template
List<Individual> inds = (List<Individual>)data.get("entities");
List<ListedIndividualTemplateModel> indsTm = new ArrayList<ListedIndividualTemplateModel>();
for(Individual ind : inds ){
indsTm.add(new ListedIndividualTemplateModel(ind,vreq));
}
data.put("individuals", indsTm);
List<TemplateModel> wpages = new ArrayList<TemplateModel>();
List<PageRecord> pages = (List<PageRecord>)data.get("pages");
BeansWrapper wrapper = new BeansWrapper();
for( PageRecord pr: pages ){
wpages.add( wrapper.wrap(pr) );
}
data.put("rdfUrl", vreq.getContextPath()+"/listrdf/");
} catch(Exception ex) {
log.error("An error occurred retrieving Vclass Intersection individuals", ex);
}
//TODO: Check if need class group at all here?
//data.put("vClassGroup", group); //may put null
return data;
}
public static VClassGroupTemplateModel getClassGroup(String classGroupUri, ServletContext context, VitroRequest vreq){
VClassGroupCache vcgc = VClassGroupCache.getVClassGroupCache(context);
List<VClassGroup> vcgList = vcgc.getGroups();
VClassGroup group = null;
for( VClassGroup vcg : vcgList){
if( vcg.getURI() != null && vcg.getURI().equals(classGroupUri)){
group = vcg;
break;
}
}
if( classGroupUri != null && !classGroupUri.isEmpty() && group == null ){
/*This could be for two reasons: one is that the classgroup doesn't exist
* The other is that there are no individuals in any of the classgroup's classes */
group = vreq.getWebappDaoFactory().getVClassGroupDao().getGroupByURI(classGroupUri);
if( group != null ){
List<VClassGroup> vcgFullList = vreq.getWebappDaoFactory().getVClassGroupDao()
.getPublicGroupsWithVClasses(false, true, false);
for( VClassGroup vcg : vcgFullList ){
if( classGroupUri.equals(vcg.getURI()) ){
group = vcg;
break;
}
}
if( group == null ){
log.error("Cannot get classgroup '" + classGroupUri + "'");
return null;
}else{
setAllClassCountsToZero(group);
}
}else{
log.error("classgroup " + classGroupUri + " does not exist in the system");
return null;
}
}
return new VClassGroupTemplateModel(group);
}
public String getType(){
return DisplayVocabulary.CLASSINTERSECTION_PAGE_TYPE;
}
protected static void setAllClassCountsToZero(VClassGroup vcg){
for(VClass vc : vcg){
vc.setEntityCount(0);
}
}
}