@Override
public SecuredPrefixMapping withDefaultMappings(final PrefixMapping map) {
// mapping only updates if there are map entries to add. Since this gets called
// when we are doing deep triple checks while writing we need to attempt the
// update only if there are new updates to add.
PrefixMapping m = holder.getBaseItem();
PrefixMappingImpl pm = new PrefixMappingImpl();
for (Entry<String, String> e : map.getNsPrefixMap().entrySet()) {
if (m.getNsPrefixURI(e.getKey()) == null && m.getNsURIPrefix(e.getValue()) == null) {
pm.setNsPrefix(e.getKey(), e.getValue());
}
}
if (!pm.getNsPrefixMap().isEmpty()) {
checkUpdate();
holder.getBaseItem().withDefaultMappings(pm);
}
return holder.getSecuredItem();
}
