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package eu.dnetlib.oai.info;
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import java.util.Arrays;
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import java.util.List;
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import org.apache.commons.lang3.StringEscapeUtils;
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import org.apache.commons.lang3.StringUtils;
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import eu.dnetlib.miscutils.functional.hash.Hashing;
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import eu.dnetlib.oai.BadResumptionTokenException;
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public class ResumptionTokenImpl implements ResumptionToken {
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/**
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* Total number of documents.
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*/
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private int nMaxElements;
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/**
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* Requested metadata prefix.
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*/
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private String metadataPrefix;
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/**
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* Query to use generate the requested records.
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*/
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private String query;
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/**
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* Number of already read records.
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*/
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private int nRead;
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/**
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* objIdentifier of the last read document.
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*/
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private String lastObjIdentifier;
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/**
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* Requested set. Optional.
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*/
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private String requestedSet = "";
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private boolean hasDateRange = false;
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/**
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* {@inheritDoc}
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*/
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@Override
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public String serialize() {
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final String escapedQuery = StringEscapeUtils.escapeXml11(query);
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final List<String> info =
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Arrays.asList("" + nMaxElements, metadataPrefix, escapedQuery, "" + nRead, lastObjIdentifier, "" + hasDateRange, requestedSet);
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String s = StringUtils.join(info, "|");
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while ((s.length() % 3) != 0) {
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s += " "; // If the length is multiple of 3 the base64 does not contain the padding chars (=)
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}
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return Hashing.encodeBase64(s);
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}
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/**
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* {@inheritDoc}
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*
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* @throws BadResumptionTokenException
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*/
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@Override
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public void deserialize(final String token) throws BadResumptionTokenException {
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final String[] info = Hashing.decodeBase64(token).trim().split("\\|");
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if (info.length < 6) { throw new BadResumptionTokenException(token); }
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nMaxElements = Integer.parseInt(info[0]);
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metadataPrefix = info[1];
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final String unescapedQuery = StringEscapeUtils.unescapeXml(info[2]);
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query = unescapedQuery;
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nRead = Integer.parseInt(info[3]);
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lastObjIdentifier = info[4];
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hasDateRange = Boolean.valueOf(info[5]);
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if (info.length == 7) {
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requestedSet = info[6];
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public int getnMaxElements() {
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return nMaxElements;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setnMaxElements(final int nMaxElements) {
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this.nMaxElements = nMaxElements;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public String getMetadataPrefix() {
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return metadataPrefix;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setMetadataPrefix(final String metadataPrefix) {
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this.metadataPrefix = metadataPrefix;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public String getQuery() {
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return query;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setQuery(final String query) {
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this.query = query;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public int getnRead() {
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return nRead;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setnRead(final int nRead) {
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this.nRead = nRead;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public String getLastObjIdentifier() {
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return lastObjIdentifier;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setLastObjIdentifier(final String lastObjIdentifier) {
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this.lastObjIdentifier = lastObjIdentifier;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public String getRequestedSet() {
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return requestedSet;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setRequestedSet(final String requestedSet) {
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this.requestedSet = requestedSet;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean hasDateRange() {
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return hasDateRange;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void setDateRange(final boolean hasDateRange) {
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this.hasDateRange = hasDateRange;
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}
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@Override
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public String toString() {
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return "ResumptionTokenImpl [nMaxElements=" + nMaxElements + ", metadataPrefix=" + metadataPrefix + ", query=" + query + ", nRead=" + nRead
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+ ", lastObjIdentifier=" + lastObjIdentifier + ", hasDateRange=" + hasDateRange + ", requestedSet=" + requestedSet + "]";
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}
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}
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