64 lines
1.6 KiB
Java
64 lines
1.6 KiB
Java
package eu.dnetlib.data.collector.plugins.httpfilename;
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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 java.util.Iterator;
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import java.util.NoSuchElementException;
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import java.util.Objects;
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import java.util.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.TimeUnit;
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/**
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* Created by miriam on 25/06/2018.
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*/
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public class HttpWithFileNameCollectorIterator implements Iterator<String> {
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public static final String TERMINATOR = "FINITO";
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private static final Log log = LogFactory.getLog(HttpWithFileNameCollectorIterator.class);
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private final ArrayBlockingQueue<String> queue;
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public static final long waitTime = 60L;
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private String last = "<resource><DOI>JUNK</DOI></resource>";
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public HttpWithFileNameCollectorIterator(ArrayBlockingQueue<String> queue) {
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this.queue = queue;
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extractFromQueue();
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}
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@Override
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public boolean hasNext() {
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//return !(Objects.equals(last, TERMINATOR) || Objects.equals(last,null));
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return !(Objects.equals(last, TERMINATOR));
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}
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@Override
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public String next() {
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try{
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return last;
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}finally{
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extractFromQueue();
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}
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}
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private void extractFromQueue() {
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try {
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last = queue.take();
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//last = queue.poll(waitTime, TimeUnit.SECONDS);
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}catch(InterruptedException e){
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log.warn("Interrupted while waiting for element to consume");
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throw new NoSuchElementException(e.getMessage());
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}
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}
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}
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