D-Net

package eu.dnetlib.goldoa.service.utils;

import eu.dnetlib.goldoa.domain.Publication;

import org.springframework.stereotype.Component;

import org.w3c.dom.Document;

import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.xpath.XPath;

import javax.xml.xpath.XPathExpressionException;

import javax.xml.xpath.XPathFactory;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

/**

 * Created by antleb on 3/7/16.

 */

@Component(value = "openaireClient")

public class OpenAIREClient {

	private DocumentBuilder documentBuilder;

	private XPath xPath = XPathFactory.newInstance().newXPath();

	public OpenAIREClient() throws ParserConfigurationException {

		documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();

	}

	public Publication findPublication(String title) {

		Publication publication = new Publication();

		InputStream is = null;

		try {

			is = new URL("http://api.openaire.eu/search/publications?title=" + title).openStream();

			Document doc = documentBuilder.parse(is);

			String docTitle = xPath.compile("/response//result//title").evaluate(doc);

		} catch (MalformedURLException e) {

			e.printStackTrace();

		} catch (IOException e) {

			e.printStackTrace();

		} catch (SAXException e) {

			e.printStackTrace();

		} catch (XPathExpressionException e) {

			e.printStackTrace();

		} finally {

			try {

				if (is != null)

					is.close();

			} catch (Exception e) {

			}

		}

		return publication;

	}

}