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6
7 package gov.noaa.eds.xapi.generic;
8
9 import java.util.Iterator;
10 import java.util.NoSuchElementException;
11 import org.xmldb.api.base.ErrorCodes;
12 import org.xmldb.api.base.Resource;
13 import org.xmldb.api.base.ResourceIterator;
14 import org.xmldb.api.base.XMLDBException;
15
16 /***
17 * A simple iterator for Resource objects.
18 * @version $Id: GenericResourceIterator.java,v 1.2 2004/12/23 22:26:01 mrxtravis Exp $
19 * @author tns
20 */
21 public class GenericResourceIterator implements ResourceIterator {
22
23 private Iterator iterator = null;
24
25 /*** Creates a new instance of GenericResourceIterator */
26 public GenericResourceIterator(Iterator iterator) {
27 this.iterator = iterator;
28 }
29
30 /***Returns the next resource or throws an XMLDBException if one does not exist.
31 *@return The next resource in this iteration
32 */
33 public Resource nextResource() throws XMLDBException {
34 try {
35 return (Resource) this.iterator.next();
36 } catch (NoSuchElementException e){
37 throw new XMLDBException(ErrorCodes.NO_SUCH_RESOURCE);
38 }
39 }
40
41 /***
42 * Determines if this iterations has any more resources to iterate through
43 * @return true if there are more resource, false otherwise
44 */
45 public boolean hasMoreResources() throws XMLDBException {
46 return this.iterator.hasNext();
47 }
48
49 }