File indexing completed on 2024-04-14 03:49:40

 /*
     This file is part of the KDE Baloo project.
     SPDX-FileCopyrightText: 2015 Vishesh Handa <vhanda@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-or-later
 */
 
 #include "documentdb.h"
 #include "doctermscodec.h"
 #include "enginedebug.h"
 
 using namespace Baloo;
 
 DocumentDB::DocumentDB(MDB_dbi dbi, MDB_txn* txn)
     : m_txn(txn)
     , m_dbi(dbi)
 {
     Q_ASSERT(txn != nullptr);
     Q_ASSERT(dbi != 0);
 }
 
 DocumentDB::~DocumentDB()
 {
 }
 
 MDB_dbi DocumentDB::create(const char* name, MDB_txn* txn)
 {
     MDB_dbi dbi = 0;
     const int rc = mdb_dbi_open(txn, name, MDB_CREATE | MDB_INTEGERKEY, &dbi);
     if (rc) {
         qCWarning(ENGINE) << "DocumentDB::create" << name << mdb_strerror(rc);
         return 0;
     }
 
     return dbi;
 }
 
 MDB_dbi DocumentDB::open(const char* name, MDB_txn* txn)
 {
     MDB_dbi dbi = 0;
     const int rc = mdb_dbi_open(txn, name, MDB_INTEGERKEY, &dbi);
     if (rc) {
         qCWarning(ENGINE) << "DocumentDB::open" << name << mdb_strerror(rc);
         return 0;
     }
 
     return dbi;
 }
 
 void DocumentDB::put(quint64 docId, const QVector<QByteArray>& list)
 {
     Q_ASSERT(docId > 0);
     Q_ASSERT(!list.isEmpty());
 
     MDB_val key;
     key.mv_size = sizeof(quint64);
     key.mv_data = static_cast<void*>(&docId);
 
     QByteArray arr = DocTermsCodec::encode(list);
 
     MDB_val val;
     val.mv_size = arr.size();
     val.mv_data = static_cast<void*>(arr.data());
 
     int rc = mdb_put(m_txn, m_dbi, &key, &val, 0);
     if (rc) {
         qCWarning(ENGINE) << "DocumentDB::put" << mdb_strerror(rc);
     }
 }
 
 QVector<QByteArray> DocumentDB::get(quint64 docId)
 {
     Q_ASSERT(docId > 0);
 
     MDB_val key;
     key.mv_size = sizeof(quint64);
     key.mv_data = static_cast<void*>(&docId);
 
     MDB_val val{0, nullptr};
     int rc = mdb_get(m_txn, m_dbi, &key, &val);
     if (rc) {
         qCDebug(ENGINE) << "DocumentDB::get" << docId << mdb_strerror(rc);
         return QVector<QByteArray>();
     }
 
     QByteArray arr = QByteArray::fromRawData(static_cast<char*>(val.mv_data), val.mv_size);
 
     auto result = DocTermsCodec::decode(arr);
     if (result.isEmpty()) {
         qCDebug(ENGINE) << "Document Terms DB contains corrupt data for " << docId;
     }
     return result;
 }
 
 void DocumentDB::del(quint64 docId)
 {
     Q_ASSERT(docId > 0);
 
     MDB_val key;
     key.mv_size = sizeof(quint64);
     key.mv_data = static_cast<void*>(&docId);
 
     int rc = mdb_del(m_txn, m_dbi, &key, nullptr);
     if (rc != 0 && rc != MDB_NOTFOUND) {
         qCDebug(ENGINE) << "DocumentDB::del" << docId << mdb_strerror(rc);
     }
 }
 
 bool DocumentDB::contains(quint64 docId)
 {
     Q_ASSERT(docId > 0);
 
     MDB_val key;
     key.mv_size = sizeof(quint64);
     key.mv_data = static_cast<void*>(&docId);
 
     MDB_val val;
     int rc = mdb_get(m_txn, m_dbi, &key, &val);
     if (rc) {
         if (rc != MDB_NOTFOUND) {
             qCDebug(ENGINE) << "DocumentDB::contains" << docId << mdb_strerror(rc);
         }
         return false;
     }
 
     return true;
 }
 
 uint DocumentDB::size()
 {
     MDB_stat stat;
     int rc = mdb_stat(m_txn, m_dbi, &stat);
     if (rc) {
         qCDebug(ENGINE) << "DocumentDB::size" << mdb_strerror(rc);
         return 0;
     }
 
     return stat.ms_entries;
 }
 
 QMap<quint64, QVector<QByteArray>> DocumentDB::toTestMap() const
 {
     MDB_cursor* cursor;
     mdb_cursor_open(m_txn, m_dbi, &cursor);
 
     MDB_val key = {0, nullptr};
     MDB_val val;
 
     QMap<quint64, QVector<QByteArray>> map;
     while (1) {
         int rc = mdb_cursor_get(cursor, &key, &val, MDB_NEXT);
         if (rc == MDB_NOTFOUND) {
             break;
         }
         if (rc) {
             qCWarning(ENGINE) << "DocumentDB::toTestMap" << mdb_strerror(rc);
             break;
         }
 
         const quint64 id = *(static_cast<quint64*>(key.mv_data));
         const QVector<QByteArray> vec = DocTermsCodec::decode(QByteArray(static_cast<char*>(val.mv_data), val.mv_size));
         map.insert(id, vec);
     }
 
     mdb_cursor_close(cursor);
     return map;
 }