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PageIterator.java
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43 lines (35 loc) · 1.14 KB
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package technology.tabula;
import java.io.IOException;
import java.util.Iterator;
public class PageIterator implements Iterator<Page> {
private ObjectExtractor objectExtractor;
private Iterator<Integer> pageIndexIterator;
public PageIterator(ObjectExtractor objectExtractor, Iterable<Integer> pages) {
super();
this.objectExtractor = objectExtractor;
this.pageIndexIterator = pages.iterator();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //
@Override
public boolean hasNext() {
return pageIndexIterator.hasNext();
}
@Override
public Page next() {
Page nextPage = null;
if (!this.hasNext()) {
throw new IllegalStateException();
}
try {
nextPage = objectExtractor.extractPage(pageIndexIterator.next());
} catch (IOException e) {
e.printStackTrace();
}
return nextPage;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}