diff options
Diffstat (limited to 'src/PYDatabase.cc')
| -rw-r--r-- | src/PYDatabase.cc | 734 |
1 files changed, 0 insertions, 734 deletions
diff --git a/src/PYDatabase.cc b/src/PYDatabase.cc deleted file mode 100644 index 5bcc3c1..0000000 --- a/src/PYDatabase.cc +++ /dev/null @@ -1,734 +0,0 @@ -/* vim:set et ts=4 sts=4: - * - * ibus-pinyin - The Chinese PinYin engine for IBus - * - * Copyright (c) 2008-2010 Peng Huang <shawn.p.huang@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. - */ -#include "PYDatabase.h" -#include <glib.h> -#include <glib/gstdio.h> -#include <sqlite3.h> -#include "PYUtil.h" -#include "PYPinyinArray.h" - -namespace PY { - -#define DB_CACHE_SIZE "5000" -#define DB_INDEX_SIZE (3) -/* define columns */ -#define DB_COLUMN_USER_FREQ (0) -#define DB_COLUMN_PHRASE (1) -#define DB_COLUMN_FREQ (2) -#define DB_COLUMN_S0 (3) - -#define DB_PREFETCH_LEN (6) -#define DB_BACKUP_TIMEOUT (60) - -std::unique_ptr<Database> Database::m_instance; - -class Conditions : public std::vector<std::string> { -public: - Conditions (void) : std::vector<std::string> (1) {} - - void double_ (void) { - gint i = size (); - reserve (i * 2); - do { - push_back (at (--i)); - } while (i > 0); - } - - void triple (void) { - gint i = size (); - reserve (i * 3); - do { - const std::string & value = at (--i); - push_back (value); - push_back (value); - } while (i > 0); - } - - void appendVPrintf (gint begin, gint end, const gchar *fmt, va_list args) { - gchar str[64]; - g_vsnprintf (str, sizeof(str), fmt, args); - for (gint i = begin; i < end; i++) { - at (i) += str; - } - } - - void appendPrintf (gint begin, gint end, const gchar *fmt, ...) { - va_list args; - va_start (args, fmt); - appendVPrintf (begin, end, fmt, args); - va_end (args); - } -}; - -class SQLStmt { -public: - SQLStmt (sqlite3 *db) - : m_db (db), m_stmt (NULL) { - g_assert (m_db != NULL); - } - - ~SQLStmt () { - if (m_stmt != NULL) { - if (sqlite3_finalize (m_stmt) != SQLITE_OK) { - g_warning ("destroy sqlite stmt failed!"); - } - } - } - - gboolean prepare (const String &sql) { - if (sqlite3_prepare (m_db, - sql.c_str (), - sql.size (), - &m_stmt, - NULL) != SQLITE_OK) { - g_warning ("parse sql failed!\n %s", sql.c_str ()); - return FALSE; - } - - return TRUE; - } - - gboolean step (void) { - switch (sqlite3_step (m_stmt)) { - case SQLITE_ROW: - return TRUE; - case SQLITE_DONE: - return FALSE; - default: - g_warning ("sqlites step error!"); - return FALSE; - } - } - - const gchar *columnText (guint col) { - return (const gchar *) sqlite3_column_text (m_stmt, col); - } - - gint columnInt (guint col) { - return sqlite3_column_int (m_stmt, col); - } - -private: - sqlite3 *m_db; - sqlite3_stmt *m_stmt; -}; - -Query::Query (const PinyinArray & pinyin, - guint pinyin_begin, - guint pinyin_len, - guint option) - : m_pinyin (pinyin), - m_pinyin_begin (pinyin_begin), - m_pinyin_len (pinyin_len), - m_option (option) -{ - g_assert (m_pinyin.size () >= pinyin_begin + pinyin_len); -} - -Query::~Query (void) -{ -} - -gint -Query::fill (PhraseArray &phrases, gint count) -{ - gint row = 0; - - while (m_pinyin_len > 0) { - if (G_LIKELY (m_stmt.get () == NULL)) { - m_stmt = Database::instance ().query (m_pinyin, m_pinyin_begin, m_pinyin_len, -1, m_option); - g_assert (m_stmt.get () != NULL); - } - - while (m_stmt->step ()) { - Phrase phrase; - - g_strlcpy (phrase.phrase, - m_stmt->columnText (DB_COLUMN_PHRASE), - sizeof (phrase.phrase)); - phrase.freq = m_stmt->columnInt (DB_COLUMN_FREQ); - phrase.user_freq = m_stmt->columnInt (DB_COLUMN_USER_FREQ); - phrase.len = m_pinyin_len; - - for (guint i = 0, column = DB_COLUMN_S0; i < m_pinyin_len; i++) { - phrase.pinyin_id[i].sheng = m_stmt->columnInt (column++); - phrase.pinyin_id[i].yun = m_stmt->columnInt (column++); - } - - phrases.push_back (phrase); - row ++; - if (G_UNLIKELY (row == count)) { - return row; - } - } - - m_stmt.reset (); - m_pinyin_len --; - } - - return row; -} - -Database::Database (void) - : m_db (NULL) - , m_timeout_id (0) - , m_timer (g_timer_new ()) -{ - open (); -} - -Database::~Database (void) -{ - g_timer_destroy (m_timer); - if (m_timeout_id != 0) { - saveUserDB (); - g_source_remove (m_timeout_id); - } - if (m_db) { - if (sqlite3_close (m_db) != SQLITE_OK) { - g_warning ("close sqlite database failed!"); - } - } -} - -inline gboolean -Database::executeSQL (const gchar *sql, sqlite3 *db) -{ - if (db == NULL) - db = m_db; - - gchar *errmsg = NULL; - if (sqlite3_exec (db, sql, NULL, NULL, &errmsg) != SQLITE_OK) { - g_warning ("%s: %s", errmsg, sql); - sqlite3_free (errmsg); - return FALSE; - } - return TRUE; -} - -gboolean -Database::open (void) -{ - do { -#if (SQLITE_VERSION_NUMBER >= 3006000) - sqlite3_initialize (); -#endif - static const gchar * maindb [] = { - PKGDATADIR"/db/local.db", - PKGDATADIR"/db/open-phrase.db", - PKGDATADIR"/db/android.db", - "main.db", - }; - - guint i; - for (i = 0; i < G_N_ELEMENTS (maindb); i++) { - if (!g_file_test(maindb[i], G_FILE_TEST_IS_REGULAR)) - continue; - if (sqlite3_open_v2 (maindb[i], &m_db, - SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL) == SQLITE_OK) { - g_message ("Use database %s", maindb[i]); - break; - } - } - - if (i == G_N_ELEMENTS (maindb)) { - g_warning ("can not open main database"); - break; - } - - m_sql.clear (); - - /* Set synchronous=OFF, write user database will become much faster. - * It will cause user database corrupted, if the operatering system - * crashes or computer loses power. - * */ - m_sql << "PRAGMA synchronous=OFF;\n"; - - /* Set the cache size for better performance */ - m_sql << "PRAGMA cache_size=" DB_CACHE_SIZE ";\n"; - - /* Using memory for temp store */ - // m_sql << "PRAGMA temp_store=MEMORY;\n"; - - /* Set journal mode */ - // m_sql << "PRAGMA journal_mode=PERSIST;\n"; - - /* Using EXCLUSIVE locking mode on databases - * for better performance */ - m_sql << "PRAGMA locking_mode=EXCLUSIVE;\n"; - if (!executeSQL (m_sql)) - break; - - loadUserDB (); -#if 0 - /* Attach user database */ - m_buffer = g_get_user_cache_dir (); - m_buffer << G_DIR_SEPARATOR_S << "ibus" - << G_DIR_SEPARATOR_S << "pinyin"; - g_mkdir_with_parents (m_buffer, 0750); - m_buffer << G_DIR_SEPARATOR_S << "user-1.3.db"; - retval = openUserDB (m_buffer); - if (!retval) { - g_warning ("Can not open user database %s", m_buffer.c_str ()); - if (!openUserDB (":memory:")) - goto _failed; - } -#endif - - /* prefetch some tables */ - // prefetch (); - - return TRUE; - } while (0); - - if (m_db) { - sqlite3_close (m_db); - m_db = NULL; - } - return FALSE; -} - -gboolean -Database::loadUserDB (void) -{ - sqlite3 *userdb = NULL; - do { - /* Attach user database */ - m_sql.printf ("ATTACH DATABASE \":memory:\" AS userdb;"); - if (!executeSQL (m_sql)) - break; - - m_buffer = g_get_user_cache_dir (); - m_buffer << G_DIR_SEPARATOR_S << "ibus" - << G_DIR_SEPARATOR_S << "pinyin"; - g_mkdir_with_parents (m_buffer, 0750); - m_buffer << G_DIR_SEPARATOR_S << "user-1.3.db"; - - gint flags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE; - if (sqlite3_open_v2 (m_buffer, &userdb, flags, NULL) != SQLITE_OK && - sqlite3_open_v2 (":memory:", &userdb, flags, NULL) != SQLITE_OK) - break; - - m_sql = "BEGIN TRANSACTION;\n"; - /* create desc table*/ - m_sql << "CREATE TABLE IF NOT EXISTS desc (name PRIMARY KEY, value TEXT);\n"; - m_sql << "INSERT OR IGNORE INTO desc VALUES " << "('version', '1.2.0');\n" - << "INSERT OR IGNORE INTO desc VALUES " << "('uuid', '" << UUID () << "');\n" - << "INSERT OR IGNORE INTO desc VALUES " << "('hostname', '" << Hostname () << "');\n" - << "INSERT OR IGNORE INTO desc VALUES " << "('username', '" << Env ("USERNAME") << "');\n" - << "INSERT OR IGNORE INTO desc VALUES " << "('create-time', datetime());\n" - << "INSERT OR IGNORE INTO desc VALUES " << "('attach-time', datetime());\n"; - - /* create phrase tables */ - for (guint i = 0; i < MAX_PHRASE_LEN; i++) { - m_sql.appendPrintf ("CREATE TABLE IF NOT EXISTS py_phrase_%d (user_freq, phrase TEXT, freq INTEGER ", i); - for (guint j = 0; j <= i; j++) - m_sql.appendPrintf (",s%d INTEGER, y%d INTEGER", j, j); - m_sql << ");\n"; - } - - /* create index */ - m_sql << "CREATE UNIQUE INDEX IF NOT EXISTS " << "index_0_0 ON py_phrase_0(s0,y0,phrase);\n"; - m_sql << "CREATE UNIQUE INDEX IF NOT EXISTS " << "index_1_0 ON py_phrase_1(s0,y0,s1,y1,phrase);\n"; - m_sql << "CREATE INDEX IF NOT EXISTS " << "index_1_1 ON py_phrase_1(s0,s1,y1);\n"; - for (guint i = 2; i < MAX_PHRASE_LEN; i++) { - m_sql << "CREATE UNIQUE INDEX IF NOT EXISTS " << "index_" << i << "_0 ON py_phrase_" << i - << "(s0,y0"; - for (guint j = 1; j <= i; j++) - m_sql << ",s" << j << ",y" << j; - m_sql << ",phrase);\n"; - m_sql << "CREATE INDEX IF NOT EXISTS " << "index_" << i << "_1 ON py_phrase_" << i << "(s0,s1,s2,y2);\n"; - } - m_sql << "COMMIT;"; - - if (!executeSQL (m_sql, userdb)) - break; - - sqlite3_backup *backup = sqlite3_backup_init (m_db, "userdb", userdb, "main"); - - if (backup) { - sqlite3_backup_step (backup, -1); - sqlite3_backup_finish (backup); - } - - sqlite3_close (userdb); - return TRUE; - } while (0); - - if (userdb) - sqlite3_close (userdb); - return FALSE; -} - -gboolean -Database::saveUserDB (void) -{ - m_buffer = g_get_user_cache_dir (); - m_buffer << G_DIR_SEPARATOR_S << "ibus" - << G_DIR_SEPARATOR_S << "pinyin"; - g_mkdir_with_parents (m_buffer, 0750); - m_buffer << G_DIR_SEPARATOR_S << "user-1.3.db"; - - String tmpfile = m_buffer + "-tmp"; - sqlite3 *userdb = NULL; - do { - - /* remove tmpfile if it exist */ - g_unlink (tmpfile); - - gint flags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE; - if (sqlite3_open_v2 (tmpfile, &userdb, flags, NULL) != SQLITE_OK) - break; - - sqlite3_backup *backup = sqlite3_backup_init (userdb, "main", m_db, "userdb"); - - if (backup == NULL) - break; - - sqlite3_backup_step (backup, -1); - sqlite3_backup_finish (backup); - sqlite3_close (userdb); - - g_rename (tmpfile, m_buffer); - - return TRUE; - } while (0); - - if (userdb != NULL) - sqlite3_close (userdb); - g_unlink (tmpfile); - - return FALSE; -} - -void -Database::prefetch (void) -{ - m_sql.clear (); - for (guint i = 0; i < DB_PREFETCH_LEN; i++) - m_sql << "SELECT * FROM py_phrase_" << i << ";\n"; - - // g_debug ("prefetching ..."); - executeSQL (m_sql); - // g_debug ("done"); -} - -gboolean -Database::timeoutCallback (gpointer data) -{ - Database *self = static_cast<Database*> (data); - - /* Get elapsed time since last modification of database. */ - guint elapsed = (guint)g_timer_elapsed (self->m_timer, NULL); - - if (elapsed >= DB_BACKUP_TIMEOUT && - self->saveUserDB ()) { - self->m_timeout_id = 0; - return FALSE; - } - - return TRUE; -} - -void -Database::modified (void) -{ - /* Restart the timer */ - g_timer_start (m_timer); - - if (m_timeout_id != 0) - return; - - m_timeout_id = g_timeout_add_seconds (DB_BACKUP_TIMEOUT, - Database::timeoutCallback, - static_cast<gpointer> (this)); -} - -inline static gboolean -pinyin_option_check_sheng (guint option, gint id, gint fid) -{ - switch ((id << 16) | fid) { - case (PINYIN_ID_C << 16) | PINYIN_ID_CH: - return (option & PINYIN_FUZZY_C_CH); - case (PINYIN_ID_CH << 16) | PINYIN_ID_C: - return (option & PINYIN_FUZZY_CH_C); - case (PINYIN_ID_Z << 16) | PINYIN_ID_ZH: - return (option & PINYIN_FUZZY_Z_ZH); - case (PINYIN_ID_ZH << 16) | PINYIN_ID_Z: - return (option & PINYIN_FUZZY_ZH_Z); - case (PINYIN_ID_S << 16) | PINYIN_ID_SH: - return (option & PINYIN_FUZZY_S_SH); - case (PINYIN_ID_SH << 16) | PINYIN_ID_S: - return (option & PINYIN_FUZZY_SH_S); - case (PINYIN_ID_L << 16) | PINYIN_ID_N: - return (option & PINYIN_FUZZY_L_N); - case (PINYIN_ID_N << 16) | PINYIN_ID_L: - return (option & PINYIN_FUZZY_N_L); - case (PINYIN_ID_F << 16) | PINYIN_ID_H: - return (option & PINYIN_FUZZY_F_H); - case (PINYIN_ID_H << 16) | PINYIN_ID_F: - return (option & PINYIN_FUZZY_H_F); - case (PINYIN_ID_L << 16) | PINYIN_ID_R: - return (option & PINYIN_FUZZY_L_R); - case (PINYIN_ID_R << 16) | PINYIN_ID_L: - return (option & PINYIN_FUZZY_R_L); - case (PINYIN_ID_K << 16) | PINYIN_ID_G: - return (option & PINYIN_FUZZY_K_G); - case (PINYIN_ID_G << 16) | PINYIN_ID_K: - return (option & PINYIN_FUZZY_G_K); - default: return FALSE; - } -} - -inline static gboolean -pinyin_option_check_yun (guint option, gint id, gint fid) -{ - switch ((id << 16) | fid) { - case (PINYIN_ID_AN << 16) | PINYIN_ID_ANG: - return (option & PINYIN_FUZZY_AN_ANG); - case (PINYIN_ID_ANG << 16) | PINYIN_ID_AN: - return (option & PINYIN_FUZZY_ANG_AN); - case (PINYIN_ID_EN << 16) | PINYIN_ID_ENG: - return (option & PINYIN_FUZZY_EN_ENG); - case (PINYIN_ID_ENG << 16) | PINYIN_ID_EN: - return (option & PINYIN_FUZZY_ENG_EN); - case (PINYIN_ID_IN << 16) | PINYIN_ID_ING: - return (option & PINYIN_FUZZY_IN_ING); - case (PINYIN_ID_ING << 16) | PINYIN_ID_IN: - return (option & PINYIN_FUZZY_ING_IN); - case (PINYIN_ID_IAN << 16) | PINYIN_ID_IANG: - return (option & PINYIN_FUZZY_IAN_IANG); - case (PINYIN_ID_IANG << 16) | PINYIN_ID_IAN: - return (option & PINYIN_FUZZY_IANG_IAN); - case (PINYIN_ID_UAN << 16) | PINYIN_ID_UANG: - return (option & PINYIN_FUZZY_UAN_UANG); - case (PINYIN_ID_UANG << 16) | PINYIN_ID_UAN: - return (option & PINYIN_FUZZY_UANG_UAN); - default: return FALSE; - } -} - -SQLStmtPtr -Database::query (const PinyinArray &pinyin, - guint pinyin_begin, - guint pinyin_len, - gint m, - guint option) -{ - g_assert (pinyin_begin < pinyin.size ()); - g_assert (pinyin_len <= pinyin.size () - pinyin_begin); - g_assert (pinyin_len <= MAX_PHRASE_LEN); - - /* prepare sql */ - Conditions conditions; - - for (guint i = 0; i < pinyin_len; i++) { - const Pinyin *p; - gboolean fs1, fs2; - p = pinyin[i + pinyin_begin]; - - fs1 = pinyin_option_check_sheng (option, p->pinyin_id[0].sheng, p->pinyin_id[1].sheng); - fs2 = pinyin_option_check_sheng (option, p->pinyin_id[0].sheng, p->pinyin_id[2].sheng); - - if (G_LIKELY (i > 0)) - conditions.appendPrintf (0, conditions.size (), - " AND "); - - if (G_UNLIKELY (fs1 || fs2)) { - if (G_LIKELY (i < DB_INDEX_SIZE)) { - if (fs1 && fs2 == 0) { - conditions.double_ (); - conditions.appendPrintf (0, conditions.size () >> 1, - "s%d=%d", i, p->pinyin_id[0].sheng); - conditions.appendPrintf (conditions.size () >> 1, conditions.size (), - "s%d=%d", i, p->pinyin_id[1].sheng); - } - else if (fs1 == 0 && fs2) { - conditions.double_ (); - conditions.appendPrintf (0, conditions.size () >> 1, - "s%d=%d", i, p->pinyin_id[0].sheng); - conditions.appendPrintf (conditions.size () >> 1, conditions.size (), - "s%d=%d", i, p->pinyin_id[2].sheng); - } - else { - gint len = conditions.size (); - conditions.triple (); - conditions.appendPrintf (0, len, - "s%d=%d", i, p->pinyin_id[0].sheng); - conditions.appendPrintf (len, len << 1, - "s%d=%d", i, p->pinyin_id[1].sheng); - conditions.appendPrintf (len << 1, conditions.size (), - "s%d=%d", i, p->pinyin_id[2].sheng); - } - } - else { - if (fs1 && fs2 == 0) { - conditions.appendPrintf (0, conditions.size (), - "s%d IN (%d,%d)", i, p->pinyin_id[0].sheng, p->pinyin_id[1].sheng); - } - else if (fs1 == 0 && fs2) { - conditions.appendPrintf (0, conditions.size (), - "s%d IN (%d,%d)", i, p->pinyin_id[0].sheng, p->pinyin_id[2].sheng); - } - else { - conditions.appendPrintf (0, conditions.size (), - "s%d IN (%d,%d,%d)", i, p->pinyin_id[0].sheng, p->pinyin_id[1].sheng, p->pinyin_id[2].sheng); - } - } - } - else { - conditions.appendPrintf (0, conditions.size (), - "s%d=%d", i, p->pinyin_id[0].sheng); - } - - if (p->pinyin_id[0].yun != PINYIN_ID_ZERO) { - if (pinyin_option_check_yun (option, p->pinyin_id[0].yun, p->pinyin_id[1].yun)) { - if (G_LIKELY (i < DB_INDEX_SIZE)) { - conditions.double_ (); - conditions.appendPrintf (0, conditions.size () >> 1, - " AND y%d=%d", i, p->pinyin_id[0].yun); - conditions.appendPrintf (conditions.size () >> 1, conditions.size (), - " and y%d=%d", i, p->pinyin_id[1].yun); - } - else { - conditions.appendPrintf (0, conditions.size (), - " AND y%d IN (%d,%d)", i, p->pinyin_id[0].yun, p->pinyin_id[1].yun); - } - } - else { - conditions.appendPrintf (0, conditions.size (), - " AND y%d=%d", i, p->pinyin_id[0].yun); - } - } - } - - - m_buffer.clear (); - for (guint i = 0; i < conditions.size (); i++) { - if (G_UNLIKELY (i == 0)) - m_buffer << " (" << conditions[i] << ")\n"; - else - m_buffer << " OR (" << conditions[i] << ")\n"; - } - - m_sql.clear (); - gint id = pinyin_len - 1; - m_sql << "SELECT * FROM (" - "SELECT 0 AS user_freq, * FROM main.py_phrase_" << id << " WHERE " << m_buffer << " UNION ALL " - "SELECT * FROM userdb.py_phrase_" << id << " WHERE " << m_buffer << ") " - "GROUP BY phrase ORDER BY user_freq DESC, freq DESC"; - if (m > 0) - m_sql << " LIMIT " << m; -#if 0 - g_debug ("sql =\n%s", m_sql.c_str ()); -#endif - - /* query database */ - SQLStmtPtr stmt (new SQLStmt (m_db)); - - if (!stmt->prepare (m_sql)) { - stmt.reset (); - } - - return stmt; -} - -inline void -Database::phraseWhereSql (const Phrase & p, String & sql) -{ - sql << " WHERE"; - sql << " s0=" << p.pinyin_id[0].sheng - << " AND y0=" << p.pinyin_id[0].yun; - for (guint i = 1; i < p.len; i++) { - sql << " AND s" << i << '=' << p.pinyin_id[i].sheng - << " AND y" << i << '=' << p.pinyin_id[i].yun; - } - sql << " AND phrase=\"" << p.phrase << "\""; - -} - -inline void -Database::phraseSql (const Phrase & p, String & sql) -{ - sql << "INSERT OR IGNORE INTO userdb.py_phrase_" << p.len - 1 - << " VALUES(" << 0 /* user_freq */ - << ",\"" << p.phrase << '"' /* phrase */ - << ',' << p.freq; /* freq */ - - for (guint i = 0; i < p.len; i++) { - sql << ',' << p.pinyin_id[i].sheng << ',' << p.pinyin_id[i].yun; - } - - sql << ");\n"; - - sql << "UPDATE userdb.py_phrase_" << p.len - 1 - << " SET user_freq=user_freq+1"; - - phraseWhereSql (p, sql); - sql << ";\n"; -} - -void -Database::commit (const PhraseArray &phrases) -{ - Phrase phrase = {""}; - - m_sql = "BEGIN TRANSACTION;\n"; - for (guint i = 0; i < phrases.size (); i++) { - phrase += phrases[i]; - phraseSql (phrases[i], m_sql); - } - if (phrases.size () > 1) - phraseSql (phrase, m_sql); - m_sql << "COMMIT;\n"; - - executeSQL (m_sql); - modified (); -} - -void -Database::remove (const Phrase & phrase) -{ - m_sql = "BEGIN TRANSACTION;\n"; - m_sql << "DELETE FROM userdb.py_phrase_" << phrase.len - 1; - phraseWhereSql (phrase, m_sql); - m_sql << ";\n"; - m_sql << "COMMIT;\n"; - - executeSQL (m_sql); - modified (); -} - -void -Database::init (void) -{ - if (m_instance.get () == NULL) { - m_instance.reset (new Database ()); - } -} - -void -Database::finalize (void) -{ - m_instance.reset (NULL); -} - -}; |