本文整理汇总了C++中xapian::WritableDatabase::termlist_begin方法的典型用法代码示例。如果您正苦于以下问题：C++ WritableDatabase::termlist_begin方法的具体用法？C++ WritableDatabase::termlist_begin怎么用？C++ WritableDatabase::termlist_begin使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类xapian::WritableDatabase的用法示例。
在下文中一共展示了WritableDatabase::termlist_begin方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: setDocumentLabels
/// Sets a document's labels.
bool XapianIndex::setDocumentLabels(unsigned int docId, const set<string> &labels,
bool resetLabels)
{
bool updatedLabels = false;
XapianDatabase *pDatabase = XapianDatabaseFactory::getDatabase(m_databaseName, false);
if (pDatabase == NULL)
{
cerr << "Bad index " << m_databaseName << endl;
return false;
}
try
{
Xapian::WritableDatabase *pIndex = pDatabase->writeLock();
if (pIndex != NULL)
{
Xapian::Document doc = pIndex->get_document(docId);
// Reset existing labels ?
if (resetLabels == true)
{
Xapian::TermIterator termIter = pIndex->termlist_begin(docId);
if (termIter != pIndex->termlist_end(docId))
{
for (termIter.skip_to("XLABEL:");
termIter != pIndex->termlist_end(docId); ++termIter)
{
// Is this a label ?
if (strncasecmp((*termIter).c_str(), "XLABEL:", min(7, (int)(*termIter).length())) == 0)
{
doc.remove_term(*termIter);
}
}
}
}
// Set new labels
for (set<string>::const_iterator labelIter = labels.begin(); labelIter != labels.end();
++labelIter)
{
if (labelIter->empty() == false)
{
doc.add_term(limitTermLength(string("XLABEL:") + *labelIter));
}
}
pIndex->replace_document(docId, doc);
updatedLabels = true;
}
}
catch (const Xapian::Error &error)
{
cerr << "Couldn't update document's labels: " << error.get_type() << ": " << error.get_msg() << endl;
}
catch (...)
{
cerr << "Couldn't update document's labels, unknown exception occured" << endl;
}
pDatabase->unlock();
return updatedLabels;
}