/*
* gnizr is a trademark of Image Matters LLC in the United States.
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Initial Contributor of the Original Code is Image Matters LLC.
* Portions created by the Initial Contributor are Copyright (C) 2007
* Image Matters LLC. All Rights Reserved.
*/
package com.gnizr.web.action.search;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.sf.json.JSON;
import net.sf.json.JSONSerializer;
import org.apache.log4j.Logger;
import com.gnizr.core.tag.TagManager;
import com.gnizr.core.tag.TagPager;
import com.gnizr.db.dao.Tag;
import com.gnizr.web.action.AbstractAction;
public class SuggestSearchTags extends AbstractAction{
private static final long serialVersionUID = -3987905051542991693L;
private static final Logger logger = Logger.getLogger(SuggestSearchTags.class);
private TagManager tagManager;
private TagPager tagPager;
private String q;
private List<String> skosRelatedTags = new ArrayList<String>();
private List<String> skosNarrowerTags = new ArrayList<String>();
private List<String> skosBroaderTags = new ArrayList<String>();
private JSON jsonResult;
public List<String> getSkosRelatedTags() {
return skosRelatedTags;
}
public List<String> getSkosBroaderTags() {
return skosBroaderTags;
}
public List<String> getSkosNarrowerTags() {
return skosNarrowerTags;
}
public TagManager getTagManager() {
return tagManager;
}
public void setTagManager(TagManager tagManager) {
this.tagManager = tagManager;
}
public JSON getJsonResult() {
if(jsonResult == null){
try{
Map<String,List<String>> map = new HashMap<String, List<String>>();
if(skosRelatedTags != null && skosRelatedTags.isEmpty() == false){
map.put("related",skosRelatedTags);
}
if(skosNarrowerTags != null && skosNarrowerTags.isEmpty() == false){
map.put("narrower",skosNarrowerTags);
}
if(skosBroaderTags != null && skosBroaderTags.isEmpty() == false){
map.put("broader",skosBroaderTags);
}
jsonResult = JSONSerializer.toJSON(map);
}catch(Exception e){
final String err = "can't transform SKOS tag objects to JSON: related=" + skosRelatedTags
+ ",narrower=" + skosNarrowerTags + ",broader="+skosBroaderTags;
logger.error(err,e);
}
}
return jsonResult;
}
public String getQ() {
return q;
}
public void setQ(String q) {
this.q = q;
}
public TagPager getTagPager() {
return tagPager;
}
public void setTagPager(TagPager tagPager) {
this.tagPager = tagPager;
}
@Override
protected String go() throws Exception {
logger.debug("SuggestSearchTags go(): q=" + getQ());
List<String> tags = extractTags(getQ());
for(String t : tags){
try{
List<Tag> nrwTags = tagPager.getPopularNarrowerTagsByGnizrUser(t,1);
if(nrwTags.isEmpty() == false){
for(Tag nt: nrwTags){
if(skosNarrowerTags.contains(nt.getLabel()) == false){
skosNarrowerTags.add(nt.getLabel());
}
}
}
List<Tag> brdTags = tagPager.getPopularBroaderTagsByGnizrUser(t,1);
if(brdTags.isEmpty() == false){
for(Tag bt : brdTags){
if(skosBroaderTags.contains(bt.getLabel()) == false){
skosBroaderTags.add(bt.getLabel());
}
}
}
List<Tag> relTags = tagPager.getPopularRelatedTagsByGnizrUser(t,1);
if(relTags.isEmpty() == false){
for(Tag rt : relTags){
if(skosRelatedTags.contains(rt.getLabel()) == false &&
skosBroaderTags.contains(rt.getLabel()) == false &&
skosNarrowerTags.contains(rt.getLabel()) == false){
skosRelatedTags.add(rt.getLabel());
}
}
}
}catch(Exception e){
final String err = "error getting Popular tags for: tag=" + t;
logger.debug(err,e);
}
}
return SUCCESS;
}
private List<String> extractTags(String searchTerm){
List<String> tags = new ArrayList<String>();
if(searchTerm != null){
String[] st = searchTerm.split("\\s+");
for(String s : st){
Tag t = tagManager.getTag(s);
if(t != null){
tags.add(s);
}
}
}
return tags;
}
}