64 lines
1.6 KiB
Java
64 lines
1.6 KiB
Java
package se.kb.oai.pmh;
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import java.util.List;
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import org.dom4j.Document;
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/**
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* Abstract base class that holds common functionality for the responses that
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* return lists. Can be used to get the size of the list and the actual list
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* of objects. For respones that don't return all of their results in one response,
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* the <code>ResumptionToken</code> to get the next set of data can also be
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* retrieved.
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*
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* @author Oskar Grenholm, National Library of Sweden
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*/
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public abstract class ListBase<T> extends ResponseBase {
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protected List<T> list;
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/**
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* Constructor.
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*
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* @param the response
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*
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* @throws ErrorResponseException
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*/
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public ListBase(Document document) throws ErrorResponseException {
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super(document);
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}
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/**
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* Get the size of the list.
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*
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* @return the size
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*/
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public int size() {
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return list.size();
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}
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/**
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* Get the content of the response as a list with objects of type <code>T</code>.
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*
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* @return the list
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*/
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public List<T> asList() {
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return list;
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}
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/**
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* Get the <code>ResumptionToken</code>, if any, for this response.
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*
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* @return the <code>ResumptionToken</code>, or <code>null</code>
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* if none available
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*/
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public ResumptionToken getResumptionToken() {
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if (super.resumptionToken == null
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|| super.resumptionToken.getId() == null
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|| super.resumptionToken.getId().length() == 0)
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return null;
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return super.resumptionToken;
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}
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}
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