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58995
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alessia.ba
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package eu.dnetlib.data.collector.plugins.doiresolver;
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import eu.dnetlib.data.collector.plugins.HttpConnector;
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import eu.dnetlib.data.collector.plugins.utils.JsonUtils;
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import eu.dnetlib.data.collector.rmi.CollectorServiceException;
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import org.apache.commons.io.IOUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import java.io.IOException;
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import java.io.InputStream;
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59308
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alessia.ba
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import java.util.regex.Pattern;
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58995
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alessia.ba
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public class CrossrefResolver implements DOIResolver{
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private static final Log log = LogFactory.getLog(CrossrefResolver.class);
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private String baseURL = "https://api.crossref.org/works/";
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59308
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alessia.ba
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public static Pattern CROSSREF_DOI_REGEXP = Pattern.compile("^10\\.\\d{4,9}/[-._;()/:A-Z0-9]+$", Pattern.CASE_INSENSITIVE);
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58995
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alessia.ba
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@Autowired
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private HttpConnector httpConnector;
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@Override
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public String resolve(String doi) {
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alessia.ba
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if(isValid(doi)) {
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try {
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InputStream is = httpConnector.getInputSourceAsStream(getBaseURL() + doi);
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return asXml(IOUtils.toString(is));
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} catch (IOException | CollectorServiceException e) {
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log.error("Cannot resolve doi " + doi + " Exception: " + e);
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return null;
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}
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}
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else {
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log.debug("Input does not look like a valid DOI " + doi);
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58995
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alessia.ba
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return null;
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}
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}
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59308
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alessia.ba
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protected boolean isValid(String doi){
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return CROSSREF_DOI_REGEXP.matcher(doi).matches();
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}
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58995
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alessia.ba
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protected String asXml(final String record){
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return new JsonUtils().convertToXML(record);
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}
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public String getBaseURL() {
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return baseURL;
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}
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public void setBaseURL(final String baseURL) {
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this.baseURL = baseURL;
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}
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public HttpConnector getHttpConnector() {
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return httpConnector;
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}
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public void setHttpConnector(HttpConnector httpConnector) {
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this.httpConnector = httpConnector;
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}
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}
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