/*
* WPCleaner: A tool to help on Wikipedia maintenance tasks.
* Copyright (C) 2013 Nicolas Vervelle
*
* See README.txt file for licensing information.
*/
package org.wikipediacleaner.api.request.query.prop;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.httpclient.HttpClient;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.filter.Filters;
import org.jdom2.xpath.XPathExpression;
import org.jdom2.xpath.XPathFactory;
import org.wikipediacleaner.api.APIException;
import org.wikipediacleaner.api.constants.EnumWikipedia;
import org.wikipediacleaner.api.data.DataManager;
import org.wikipediacleaner.api.data.Page;
import org.wikipediacleaner.api.data.Page.RelatedPages;
import org.wikipediacleaner.api.request.ApiRequest;
import org.wikipediacleaner.api.request.ApiXmlResult;
/**
* MediaWiki API XML links here results.
*/
public class ApiXmlLinksHereResult extends ApiXmlResult implements ApiLinksHereResult {
/**
* @param wiki Wiki on which requests are made.
* @param httpClient HTTP client for making requests.
*/
public ApiXmlLinksHereResult(
EnumWikipedia wiki,
HttpClient httpClient) {
super(wiki, httpClient);
}
/**
* Execute links here request.
*
* @param properties Properties defining request.
* @param page Main page.
* @param lists Lists to be filled with links to the page.
* @return True if request should be continued.
* @throws APIException
*/
@Override
public boolean executeLinksHere(
Map<String, String> properties,
Page page,
Map<String, List<Page>> lists) throws APIException {
try {
Element root = getRoot(properties, ApiRequest.MAX_ATTEMPTS);
// Retrieve links to page
// TODO
XPathExpression<Element> xpa = XPathFactory.instance().compile(
"/api/query/pages/page", Filters.element());
List<Element> listPages = xpa.evaluate(root);
Iterator<Element> itPages = listPages.iterator();
XPathExpression<Element> xpaLinksHere = XPathFactory.instance().compile(
"./linkshere/lh", Filters.element());
while (itPages.hasNext()) {
Element currentPage = itPages.next();
String title = currentPage.getAttributeValue("title");
List<Page> list = lists.get(title);
if (list == null) {
list = new ArrayList<>();
lists.put(title, list);
}
List<Element> listLinks = xpaLinksHere.evaluate(currentPage);
Iterator<Element> itLinks = listLinks.iterator();
while (itLinks.hasNext()) {
Element currentLink = itLinks.next();
Page link = DataManager.getPage(
getWiki(), currentLink.getAttributeValue("title"),
null, null, page.getRelatedPages(RelatedPages.REDIRECTS));
link.setNamespace(currentLink.getAttributeValue("ns"));
link.setPageId(currentLink.getAttributeValue("pageid"));
if (currentLink.getAttribute("redirect") != null) {
link.isRedirect(true);
}
if (!list.contains(link)) {
list.add(link);
}
}
}
// Retrieve continue
return shouldContinue(
root, "/api/query-continue/linkshere",
properties);
} catch (JDOMException e) {
log.error("Error loading links here", e);
throw new APIException("Error parsing XML", e);
}
}
}