looqs/shared/sqlitedbservice.cpp

236 wiersze
6.3 KiB
C++
Czysty Zwykły widok Historia

#include <QSqlQuery>
#include <QFileInfo>
#include <QDateTime>
#include <QSqlError>
#include "sqlitedbservice.h"
#include "filedata.h"
#include "logger.h"
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QVector<SearchResult> SqliteDbService::search(const LooqsQuery &query)
{
auto connection = dbFactory->forCurrentThread();
SqliteSearch searcher(connection);
return searcher.search(query);
}
std::optional<QChar> SqliteDbService::queryFileType(QString absPath)
{
auto query = exec("SELECT filetype FROM file WHERE path = ?", {absPath});
if(!query.next())
{
return {};
}
return query.value(0).toChar();
}
bool SqliteDbService::fileExistsInDatabase(QString path)
{
return execBool("SELECT 1 FROM file WHERE path = ?", {path});
}
bool SqliteDbService::fileExistsInDatabase(QString path, qint64 mtime)
{
return execBool("SELECT 1 FROM file WHERE path = ? AND mtime = ?", {path, mtime});
}
bool SqliteDbService::fileExistsInDatabase(QString path, qint64 mtime, QChar fileType)
{
return execBool("SELECT 1 FROM file WHERE path = ? AND mtime = ? AND filetype = ?", {path, mtime, fileType});
}
SqliteDbService::SqliteDbService(DatabaseFactory &dbFactory)
{
this->dbFactory = &dbFactory;
}
bool SqliteDbService::deleteFile(QString path)
{
QSqlQuery query(this->dbFactory->forCurrentThread());
query.prepare("DELETE FROM file WHERE path = ?");
query.addBindValue(path);
bool result = query.exec();
if(!result)
{
Logger::error() << "Failed to delete file" << path << Qt::endl;
}
return result;
}
unsigned int SqliteDbService::getFiles(QVector<FileData> &results, QString wildCardPattern, int offset, int limit)
{
unsigned int processedRows = 0;
// TODO: translate/convert wildCardPattern to SQL where instead of regex
QString sql = "SELECT path, mtime, size, filetype FROM file";
if(limit != 0)
{
sql += " LIMIT " + QString::number(limit);
}
if(offset != 0)
{
sql += " OFFSET " + QString::number(offset);
}
auto query = QSqlQuery(dbFactory->forCurrentThread());
query.prepare(sql);
query.setForwardOnly(true);
if(!query.exec())
{
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throw LooqsGeneralException("Error while trying to retrieve files from database: " + query.lastError().text());
}
// TODO: port this to QRegularExpression once >5.12 gets more widespread because of this bug
// https://bugreports.qt.io/browse/QTBUG-72539?focusedCommentId=439053&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel
bool usePattern = !wildCardPattern.isEmpty();
QRegExp regexPattern(wildCardPattern);
regexPattern.setPatternSyntax(QRegExp::PatternSyntax::WildcardUnix);
while(query.next())
{
QString absPath = query.value(0).toString();
if(!usePattern || regexPattern.exactMatch(absPath))
{
FileData current;
current.absPath = absPath;
current.mtime = query.value(1).toInt();
current.size = query.value(2).toInt();
current.filetype = query.value(3).toChar();
results.append(current);
}
++processedRows;
}
return processedRows;
}
bool SqliteDbService::insertToFTS(bool useTrigrams, QSqlDatabase &db, int fileid, QVector<PageData> &pageData)
{
QString ftsInsertStatement;
QString contentInsertStatement;
if(useTrigrams)
{
ftsInsertStatement = "INSERT INTO fts_trigram(content) VALUES(?)";
contentInsertStatement = "INSERT INTO content(fileid, page, fts_trigramid) VALUES(?, ?, last_insert_rowid())";
}
else
{
ftsInsertStatement = "INSERT INTO fts(content) VALUES(?)";
contentInsertStatement = "INSERT INTO content(fileid, page, ftsid) VALUES(?, ?, last_insert_rowid())";
}
for(const PageData &data : pageData)
{
QSqlQuery ftsQuery(db);
ftsQuery.prepare(ftsInsertStatement);
ftsQuery.addBindValue(data.content);
if(!ftsQuery.exec())
{
Logger::error() << "Failed fts insertion " << ftsQuery.lastError() << Qt::endl;
return false;
}
QSqlQuery contentQuery(db);
contentQuery.prepare(contentInsertStatement);
contentQuery.addBindValue(fileid);
contentQuery.addBindValue(data.pagenumber);
if(!contentQuery.exec())
{
Logger::error() << "Failed content insertion " << contentQuery.lastError() << Qt::endl;
return false;
}
}
return true;
}
QSqlQuery SqliteDbService::exec(QString querystr, std::initializer_list<QVariant> args)
{
auto query = QSqlQuery(dbFactory->forCurrentThread());
query.prepare(querystr);
for(const QVariant &v : args)
{
query.addBindValue(v);
}
if(!query.exec())
{
throw LooqsGeneralException("Error while exec(): " + query.lastError().text() + " for query: " + querystr);
}
return query;
}
bool SqliteDbService::execBool(QString querystr, std::initializer_list<QVariant> args)
{
auto query = exec(querystr, args);
if(!query.next())
{
return false;
}
return query.value(0).toBool();
}
SaveFileResult SqliteDbService::saveFile(QFileInfo fileInfo, QVector<PageData> &pageData, bool pathsOnly)
{
QString absPath = fileInfo.absoluteFilePath();
auto mtime = fileInfo.lastModified().toSecsSinceEpoch();
QChar fileType = fileInfo.isDir() ? 'd' : 'c';
if(pathsOnly)
{
fileType = 'f';
}
QSqlDatabase db = dbFactory->forCurrentThread();
QSqlQuery delQuery(db);
delQuery.prepare("DELETE FROM file WHERE path = ?");
delQuery.addBindValue(absPath);
QSqlQuery inserterQuery(db);
inserterQuery.prepare("INSERT INTO file(path, mtime, size, filetype) VALUES(?, ?, ?, ?)");
inserterQuery.addBindValue(absPath);
inserterQuery.addBindValue(mtime);
inserterQuery.addBindValue(fileInfo.size());
inserterQuery.addBindValue(fileType);
if(!db.transaction())
{
Logger::error() << "Failed to open transaction for " << absPath << " : " << db.lastError() << Qt::endl;
return DBFAIL;
}
if(!delQuery.exec())
{
Logger::error() << "Failed DELETE query" << delQuery.lastError() << Qt::endl;
db.rollback();
return DBFAIL;
}
if(!inserterQuery.exec())
{
Logger::error() << "Failed INSERT query" << inserterQuery.lastError() << Qt::endl;
db.rollback();
return DBFAIL;
}
if(!pathsOnly)
{
int lastid = inserterQuery.lastInsertId().toInt();
if(!insertToFTS(false, db, lastid, pageData))
{
db.rollback();
Logger::error() << "Failed to insert data to FTS index " << Qt::endl;
return DBFAIL;
}
if(!insertToFTS(true, db, lastid, pageData))
{
db.rollback();
Logger::error() << "Failed to insert data to FTS index " << Qt::endl;
return DBFAIL;
}
}
if(!db.commit())
{
db.rollback();
Logger::error() << "Failed to commit transaction for " << absPath << " : " << db.lastError() << Qt::endl;
return DBFAIL;
}
return OK;
}