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sandro.lab
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package eu.dnetlib.msro.workflows.nodes.mdstore;
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import java.util.Iterator;
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import java.util.List;
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andrea.man
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import javax.annotation.Resource;
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import javax.xml.ws.wsaddressing.W3CEndpointReference;
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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 eu.dnetlib.data.mdstore.MDStoreService;
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import eu.dnetlib.data.mdstore.MDStoreServiceException;
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michele.ar
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import eu.dnetlib.enabling.locators.UniqueServiceLocator;
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import eu.dnetlib.enabling.resultset.client.ResultSetClientFactory;
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// TODO: Auto-generated Javadoc
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/**
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* The Class MultipleMdStoreIterator.
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*/
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public class MultipleMdStoreIterator implements Iterator<String> {
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private static final Log log = LogFactory.getLog(MultipleMdStoreIterator.class); // NOPMD by marko on 11/24/08 5:02 PM
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/** The service locator. */
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@Resource
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private UniqueServiceLocator serviceLocator;
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/** The md i ds. */
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private List<String> mdIDs;
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/** The current id. */
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private String currentId = null;
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/** The current iterator. */
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private Iterator<String> currentIterator;
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/** The result set client factory. */
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@Autowired
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private ResultSetClientFactory resultSetClientFactory;
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/**
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* Instantiates a new multiple md store iterator.
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*
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* @param mdstoreLocator
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* the mdstore locator
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* @param mdIds
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* the md ids
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*/
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public MultipleMdStoreIterator(final UniqueServiceLocator serviceLocator, final List<String> mdIds, final ResultSetClientFactory resultSetClientFactory) {
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this.serviceLocator = serviceLocator;
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this.mdIDs = mdIds;
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this.resultSetClientFactory = resultSetClientFactory;
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getNextMDStoreRecords();
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}
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/*
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* (non-Javadoc)
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*
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* @see java.util.Iterator#hasNext()
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*/
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@Override
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public boolean hasNext() {
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if (currentId == null || currentIterator == null) { return false; }
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return currentIterator.hasNext();
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}
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/*
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* (non-Javadoc)
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*
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* @see java.util.Iterator#next()
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*/
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@Override
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public String next() {
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String nextElement = currentIterator.next();
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if (!currentIterator.hasNext()) {
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getNextMDStoreRecords();
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}
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return nextElement;
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}
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/*
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* (non-Javadoc)
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*
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* @see java.util.Iterator#remove()
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*/
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@Override
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public void remove() {
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currentIterator.remove();
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}
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/**
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* Gets the next md store records.
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*
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* @return the next md store records
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*/
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private void getNextMDStoreRecords() {
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if (mdIDs.size() > 0) {
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currentId = mdIDs.remove(0);
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currentIterator = getIterableResultset(currentId);
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}
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}
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/**
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* Gets the iterable resultset.
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*
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* @param id
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* the id
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* @return the iterable resultset
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*/
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private Iterator<String> getIterableResultset(final String id) {
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try {
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W3CEndpointReference epr = serviceLocator.getService(MDStoreService.class, id).deliverMDRecords(id, "", "", "");
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Iterable<String> input = resultSetClientFactory.getClient(epr);
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return input.iterator();
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} catch (MDStoreServiceException e) {
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log.error(e);
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return null;
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}
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}
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}
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