Metacat

package edu.ucsb.nceas.metacat.annotation;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.StringReader;

import java.net.URL;

import java.net.URLEncoder;

import java.util.ArrayList;

import java.util.List;

import org.apache.commons.httpclient.HttpClient;

import org.apache.commons.httpclient.HttpMethod;

import org.apache.commons.httpclient.methods.GetMethod;

import org.apache.commons.io.IOUtils;

import org.apache.log4j.Logger;

import org.apache.wicket.protocol.http.mock.MockHttpServletRequest;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import edu.ucsb.nceas.metacat.dataone.MNodeService;

import edu.ucsb.nceas.utilities.XMLUtilities;

public class OrcidService {

	private static Logger logMetacat = Logger.getLogger(OrcidService.class);

    //private static final String REST_URL = "http://pub.sandbox.orcid.org/v1.1/search/orcid-bio";

    private static final String REST_URL = "http://pub.orcid.org/v1.1/search/orcid-bio";

    /**

	 * Look up possible ORCID from orcid service.

	 * @see "http://support.orcid.org/knowledgebase/articles/132354-searching-with-the-public-api"

	 * @param surName

	 * @param givenNames

	 * @param otherNames

	 * @return

	 */

	public static String lookupOrcid(String text, String surName, List<String> givenNames, List<String> otherNames) {

		String url = null;

		try {

			String urlParameters = "";

			if (text != null) {

				urlParameters += "\"" + text + "\""; 

			} else {

				if (surName != null) {

//					surName = surName.replaceAll(" ", "%20");

					urlParameters += "+family-name:\"" + surName + "\"";

				}

				if (otherNames != null) {

					for (String otherName: otherNames) {

//						otherName = otherName.replaceAll(" ", "%20");

						urlParameters += "+other-names:\"" + otherName + "\""; 

					}

				}

				if (givenNames != null) {

					for (String givenName: givenNames) {

//						givenName = givenName.replaceAll(" ", "%20");

						urlParameters += "+given-names:\"" + givenName + "\""; 

					}

				}

			}

			urlParameters = URLEncoder.encode(urlParameters, "UTF-8");

			url = REST_URL + "?q=" + urlParameters + "&rows=1";

			URL restURL = new URL(url);

			HttpClient client = new HttpClient();

			HttpMethod method = new GetMethod(url);

			method.addRequestHeader("Accept", "application/orcid+xml");

			client.executeMethod(method);

			InputStream is = method.getResponseBodyAsStream();

			//InputStream is = restURL.openStream();

			String results = IOUtils.toString(is, "UTF-8");

			logMetacat.debug("RESULTS: " + results);

			Node doc = XMLUtilities.getXMLReaderAsDOMTreeRootNode(new StringReader(results));

			Node orcidUriNodeList = XMLUtilities.getNodeWithXPath(doc, "//*[local-name()=\"orcid-identifier\"]/*[local-name()=\"uri\"]");

			if (orcidUriNodeList != null) {

				String orcidUri = orcidUriNodeList.getFirstChild().getNodeValue();

				logMetacat.info("Found ORCID URI: " + orcidUri);

				return orcidUri;

			}

		} catch (Exception e) {

			logMetacat.error("Could not lookup ORCID using: " + url, e);

		}

		return null;

	}

	/**

	 * Look up indexed creators

	 */

	public static List<String> lookupCreators(boolean includeObsolete) {

		// Search for the creators if we can find them

		List<String> retList = null;

		try {

			String query = "q=-obsoletedBy:[* TO *]&rows=0&facet=true&facet.limit=-1&facet.field=origin";

			if (includeObsolete) {

				query = "q=*:*&rows=0&facet=true&facet.limit=-1&facet.field=origin";

			}

			MockHttpServletRequest request = new MockHttpServletRequest(null, null, null);

			InputStream results = MNodeService.getInstance(request ).query(null, "solr", query);

			Node rootNode = XMLUtilities.getXMLReaderAsDOMTreeRootNode(new InputStreamReader(results, "UTF-8"));

			//String resultString = XMLUtilities.getDOMTreeAsString(rootNode);

			NodeList nodeList = XMLUtilities.getNodeListWithXPath(rootNode, "//lst[@name=\"origin\"]/int/@name");

			if (nodeList != null && nodeList.getLength() > 0) {

				retList = new ArrayList<String>();

				for (int i = 0; i < nodeList.getLength(); i++) {

					String found = nodeList.item(i).getFirstChild().getNodeValue();

					retList.add(found);

				}

			}

		} catch (Exception e) {

			logMetacat.error("Error checking for creators[s]: " + e.getMessage(), e);

		}

		return retList;

	}

}