private String getPreviousPageURL(Request request) {
// If our offset should be 0 then we shouldn't be able to view a previous page url
if (0 == queryArgs.getFacetOffset()) {
return null;
}
Map<String, String> parameters = new HashMap<String, String>();
parameters.put(FACET_FIELD, request.getParameter(FACET_FIELD));
if (queryArgs.getFacetOffset() != -1) {
parameters.put(OFFSET, String.valueOf(queryArgs.getFacetOffset() - DEFAULT_PAGE_SIZE));
}
// Add the filter queries
String url = generateURL("browse-discovery", parameters);
String[] fqs = getParameterFacetQueries();
if (fqs != null) {
StringBuilder urlBuilder = new StringBuilder(url);
for (String fq : fqs) {
urlBuilder.append("&fq=").append(fq);
}
url = urlBuilder.toString();
}
return url;
}
/**
* Returns canonical link to a bitstream in the item.
*
* @param item The DSpace Item that the bitstream is part of
* @param bitstream The bitstream to link to
* @returns a String link to the bitstream
*/
private String makeBitstreamLink(Item item, Bitstream bitstream) {
String name = bitstream.getName();
StringBuilder result = new StringBuilder(contextPath);
result.append("/bitstream/item/").append(String.valueOf(item.getID()));
// append name although it isn't strictly necessary
try {
if (name != null) {
result.append("/").append(Util.encodeBitstreamName(name, "UTF-8"));
}
} catch (UnsupportedEncodingException uee) {
// just ignore it, we don't have to have a pretty
// name on the end of the url because the sequence id will
// locate it. However it means that links in this file might
// not work....
}
result.append("?sequence=").append(String.valueOf(bitstream.getSequenceID()));
return result.toString();
}
private String getNextPageURL(Request request) {
Map<String, String> parameters = new HashMap<String, String>();
parameters.put(FACET_FIELD, request.getParameter(FACET_FIELD));
if (queryArgs.getFacetOffset() != -1) {
parameters.put(OFFSET, String.valueOf(queryArgs.getFacetOffset() + DEFAULT_PAGE_SIZE));
}
// Add the filter queries
String url = generateURL("browse-discovery", parameters);
String[] fqs = getParameterFacetQueries();
if (fqs != null) {
StringBuilder urlBuilder = new StringBuilder(url);
for (String fq : fqs) {
urlBuilder.append("&fq=").append(fq);
}
url = urlBuilder.toString();
}
return url;
}