/**************************************************************************** ** ** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. ** ** This file is part of the QtSql module of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License versions 2.0 or 3.0 as published by the Free Software ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Alternatively you may (at ** your option) use any later version of the GNU General Public ** License if such license has been publicly approved by Trolltech ASA ** (or its successors, if any) and the KDE Free Qt Foundation. In ** addition, as a special exception, Trolltech gives you certain ** additional rights. These rights are described in the Trolltech GPL ** Exception version 1.1, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** Please review the following information to ensure GNU General ** Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If ** you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech, as the sole ** copyright holder for Qt Designer, grants users of the Qt/Eclipse ** Integration plug-in the right for the Qt/Eclipse Integration to ** link to functionality provided by Qt Designer and its related ** libraries. ** ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly ** granted herein. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #include "qsql_psql.h" #include <qcoreapplication.h> #include <qvariant.h> #include <qdatetime.h> #include <qregexp.h> #include <qsqlerror.h> #include <qsqlfield.h> #include <qsqlindex.h> #include <qsqlrecord.h> #include <qsqlquery.h> #include <qstringlist.h> #include <libpq-fe.h> #include <stdlib.h> #include <math.h> // workaround for postgres defining their OIDs in a private header file #define QBOOLOID 16 #define QINT8OID 20 #define QINT2OID 21 #define QINT4OID 23 #define QNUMERICOID 1700 #define QFLOAT4OID 700 #define QFLOAT8OID 701 #define QABSTIMEOID 702 #define QRELTIMEOID 703 #define QDATEOID 1082 #define QTIMEOID 1083 #define QTIMETZOID 1266 #define QTIMESTAMPOID 1114 #define QTIMESTAMPTZOID 1184 #define QOIDOID 2278 #define QBYTEAOID 17 #define QREGPROCOID 24 #define QXIDOID 28 #define QCIDOID 29 Q_DECLARE_METATYPE(PGconn*) Q_DECLARE_METATYPE(PGresult*) /* This is a compile time switch - if PQfreemem is declared, the compiler will use that one, otherwise it'll run in this template */ template <typename T> inline void PQfreemem(T *t, int = 0) { free(t); } inline void qPQfreemem(void *buffer) { PQfreemem(buffer); } class QPSQLDriverPrivate { public: QPSQLDriverPrivate(): connection(0), isUtf8(false), pro(QPSQLDriver::Version6) {} PGconn *connection; bool isUtf8; QPSQLDriver::Protocol pro; void appendTables(QStringList &tl, QSqlQuery &t, QChar type); }; void QPSQLDriverPrivate::appendTables(QStringList &tl, QSqlQuery &t, QChar type) { QString query; if (pro >= QPSQLDriver::Version73) { query = QString::fromLatin1("select pg_class.relname, pg_namespace.nspname from pg_class " "left join pg_namespace on (pg_class.relnamespace = pg_namespace.oid) " "where (pg_class.relkind = '%1') and (pg_class.relname !~ '^Inv') " "and (pg_class.relname !~ '^pg_') " "and (pg_namespace.nspname != 'information_schema') ").arg(type); } else { query = QString::fromLatin1("select relname, null from pg_class where (relkind = 'r') " "and (relname !~ '^Inv') " "and (relname !~ '^pg_') "); } t.exec(query); while (t.next()) { QString schema = t.value(1).toString(); if (schema.isEmpty() || schema == QLatin1String("public")) tl.append(t.value(0).toString()); else tl.append(t.value(0).toString().prepend(QLatin1Char('.')).prepend(schema)); } } class QPSQLResultPrivate { public: QPSQLResultPrivate(QPSQLResult *qq): q(qq), driver(0), result(0), currentSize(-1) {} QPSQLResult *q; const QPSQLDriverPrivate *driver; PGresult *result; int currentSize; bool processResults(); }; static QSqlError qMakeError(const QString& err, QSqlError::ErrorType type, const QPSQLDriverPrivate *p) { const char *s = PQerrorMessage(p->connection); QString msg = p->isUtf8 ? QString::fromUtf8(s) : QString::fromLocal8Bit(s); return QSqlError(QLatin1String("QPSQL: ") + err, msg, type); } bool QPSQLResultPrivate::processResults() { if (!result) return false; int status = PQresultStatus(result); if (status == PGRES_TUPLES_OK) { q->setSelect(true); q->setActive(true); currentSize = PQntuples(result); return true; } else if (status == PGRES_COMMAND_OK) { q->setSelect(false); q->setActive(true); currentSize = -1; return true; } q->setLastError(qMakeError(QCoreApplication::translate("QPSQLResult", "Unable to create query"), QSqlError::StatementError, driver)); return false; } static QVariant::Type qDecodePSQLType(int t) { QVariant::Type type = QVariant::Invalid; switch (t) { case QBOOLOID: type = QVariant::Bool; break; case QINT8OID: type = QVariant::LongLong; break; case QINT2OID: case QINT4OID: case QOIDOID: case QREGPROCOID: case QXIDOID: case QCIDOID: type = QVariant::Int; break; case QNUMERICOID: case QFLOAT4OID: case QFLOAT8OID: type = QVariant::Double; break; case QABSTIMEOID: case QRELTIMEOID: case QDATEOID: type = QVariant::Date; break; case QTIMEOID: case QTIMETZOID: type = QVariant::Time; break; case QTIMESTAMPOID: case QTIMESTAMPTZOID: type = QVariant::DateTime; break; case QBYTEAOID: type = QVariant::ByteArray; break; default: type = QVariant::String; break; } return type; } QPSQLResult::QPSQLResult(const QPSQLDriver* db, const QPSQLDriverPrivate* p) : QSqlResult(db) { d = new QPSQLResultPrivate(this); d->driver = p; } QPSQLResult::~QPSQLResult() { cleanup(); delete d; } QVariant QPSQLResult::handle() const { return qVariantFromValue(d->result); } void QPSQLResult::cleanup() { if (d->result) PQclear(d->result); d->result = 0; setAt(QSql::BeforeFirstRow); d->currentSize = -1; setActive(false); } bool QPSQLResult::fetch(int i) { if (!isActive()) return false; if (i < 0) return false; if (i >= d->currentSize) return false; if (at() == i) return true; setAt(i); return true; } bool QPSQLResult::fetchFirst() { return fetch(0); } bool QPSQLResult::fetchLast() { return fetch(PQntuples(d->result) - 1); } QVariant QPSQLResult::data(int i) { if (i >= PQnfields(d->result)) { qWarning("QPSQLResult::data: column %d out of range", i); return QVariant(); } int ptype = PQftype(d->result, i); QVariant::Type type = qDecodePSQLType(ptype); const char *val = PQgetvalue(d->result, at(), i); if (PQgetisnull(d->result, at(), i)) return QVariant(type); switch (type) { case QVariant::Bool: return QVariant((bool)(val[0] == 't')); case QVariant::String: return d->driver->isUtf8 ? QString::fromUtf8(val) : QString::fromAscii(val); case QVariant::LongLong: if (val[0] == '-') return QString::fromLatin1(val).toLongLong(); else return QString::fromLatin1(val).toULongLong(); case QVariant::Int: return atoi(val); case QVariant::Double: if (ptype == QNUMERICOID) return QString::fromAscii(val); return strtod(val, 0); case QVariant::Date: if (val[0] == '\0') { return QVariant(QDate()); } else { #ifndef QT_NO_DATESTRING return QVariant(QDate::fromString(QString::fromLatin1(val), Qt::ISODate)); #else return QVariant(QString::fromLatin1(val)); #endif } case QVariant::Time: { const QString str = QString::fromLatin1(val); #ifndef QT_NO_DATESTRING if (str.isEmpty()) return QVariant(QTime()); if (str.at(str.length() - 3) == QLatin1Char('+')) // strip the timezone return QVariant(QTime::fromString(str.left(str.length() - 3), Qt::ISODate)); return QVariant(QTime::fromString(str, Qt::ISODate)); #else return QVariant(str); #endif } case QVariant::DateTime: { QString dtval = QString::fromLatin1(val); #ifndef QT_NO_DATESTRING if (dtval.length() < 10) return QVariant(QDateTime()); // remove the timezone if (dtval.at(dtval.length() - 3) == QLatin1Char('+')) dtval.chop(3); // milliseconds are sometimes returned with 2 digits only if (dtval.at(dtval.length() - 3).isPunct()) dtval += QLatin1Char('0'); if (dtval.isEmpty()) return QVariant(QDateTime()); else return QVariant(QDateTime::fromString(dtval, Qt::ISODate)); #else return QVariant(dtval); #endif } case QVariant::ByteArray: { size_t len; unsigned char *data = PQunescapeBytea((unsigned char*)val, &len); QByteArray ba((const char*)data, len); qPQfreemem(data); return QVariant(ba); } default: case QVariant::Invalid: qWarning("QPSQLResult::data: unknown data type"); } return QVariant(); } bool QPSQLResult::isNull(int field) { PQgetvalue(d->result, at(), field); return PQgetisnull(d->result, at(), field); } bool QPSQLResult::reset (const QString& query) { cleanup(); if (!driver()) return false; if (!driver()->isOpen() || driver()->isOpenError()) return false; d->result = PQexec(d->driver->connection, d->driver->isUtf8 ? query.toUtf8().constData() : query.toLocal8Bit().constData()); return d->processResults(); } int QPSQLResult::size() { return d->currentSize; } int QPSQLResult::numRowsAffected() { return QString::fromLatin1(PQcmdTuples(d->result)).toInt(); } QVariant QPSQLResult::lastInsertId() const { if (isActive()) { Oid id = PQoidValue(d->result); if (id != InvalidOid) return QVariant(id); } return QVariant(); } QSqlRecord QPSQLResult::record() const { QSqlRecord info; if (!isActive() || !isSelect()) return info; int count = PQnfields(d->result); for (int i = 0; i < count; ++i) { QSqlField f; if (d->driver->isUtf8) f.setName(QString::fromUtf8(PQfname(d->result, i))); else f.setName(QString::fromLocal8Bit(PQfname(d->result, i))); f.setType(qDecodePSQLType(PQftype(d->result, i))); int len = PQfsize(d->result, i); int precision = PQfmod(d->result, i); // swap length and precision if length == -1 if (len == -1 && precision > -1) { len = precision - 4; precision = -1; } f.setLength(len); f.setPrecision(precision); f.setSqlType(PQftype(d->result, i)); info.append(f); } return info; } /////////////////////////////////////////////////////////////////// static bool setEncodingUtf8(PGconn* connection) { PGresult* result = PQexec(connection, "SET CLIENT_ENCODING TO 'UNICODE'"); int status = PQresultStatus(result); PQclear(result); return status == PGRES_COMMAND_OK; } static void setDatestyle(PGconn* connection) { PGresult* result = PQexec(connection, "SET DATESTYLE TO 'ISO'"); int status = PQresultStatus(result); if (status != PGRES_COMMAND_OK) qWarning("%s", PQerrorMessage(connection)); PQclear(result); } static QPSQLDriver::Protocol getPSQLVersion(PGconn* connection) { PGresult* result = PQexec(connection, "select version()"); int status = PQresultStatus(result); if (status == PGRES_COMMAND_OK || status == PGRES_TUPLES_OK) { QString val = QString::fromAscii(PQgetvalue(result, 0, 0)); PQclear(result); QRegExp rx(QLatin1String("(\\d+)\\.(\\d+)")); rx.setMinimal(true); // enforce non-greedy RegExp if (rx.indexIn(val) != -1) { int vMaj = rx.cap(1).toInt(); int vMin = rx.cap(2).toInt(); if (vMaj < 6) { qWarning("This version of PostgreSQL is not supported and may not work."); return QPSQLDriver::Version6; } if (vMaj == 6) { return QPSQLDriver::Version6; } else if (vMaj == 7) { if (vMin < 1) return QPSQLDriver::Version7; else if (vMin < 3) return QPSQLDriver::Version71; } return QPSQLDriver::Version73; } } else { qWarning("This version of PostgreSQL is not supported and may not work."); } return QPSQLDriver::Version6; } QPSQLDriver::QPSQLDriver(QObject *parent) : QSqlDriver(parent) { init(); } QPSQLDriver::QPSQLDriver(PGconn * conn, QObject * parent) : QSqlDriver(parent) { init(); d->connection = conn; if (conn) { d->pro = getPSQLVersion(d->connection); setOpen(true); setOpenError(false); } } void QPSQLDriver::init() { d = new QPSQLDriverPrivate(); } QPSQLDriver::~QPSQLDriver() { if (d->connection) PQfinish(d->connection); delete d; } QVariant QPSQLDriver::handle() const { return qVariantFromValue(d->connection); } bool QPSQLDriver::hasFeature(DriverFeature f) const { switch (f) { case Transactions: case QuerySize: case LastInsertId: return true; case BatchOperations: case PreparedQueries: case NamedPlaceholders: case PositionalPlaceholders: case SimpleLocking: case LowPrecisionNumbers: return false; case BLOB: return d->pro >= QPSQLDriver::Version71; case Unicode: return d->isUtf8; } return false; } /* Quote a string for inclusion into the connection string \ -> \\ ' -> \' surround string by single quotes */ static QString qQuote(QString s) { s.replace(QLatin1Char('\\'), QLatin1String("\\\\")); s.replace(QLatin1Char('\''), QLatin1String("\\'")); s.append(QLatin1Char('\'')).prepend(QLatin1Char('\'')); return s; } bool QPSQLDriver::open(const QString & db, const QString & user, const QString & password, const QString & host, int port, const QString& connOpts) { if (isOpen()) close(); QString connectString; if (!host.isEmpty()) connectString.append(QLatin1String("host=")).append(qQuote(host)); if (!db.isEmpty()) connectString.append(QLatin1String(" dbname=")).append(qQuote(db)); if (!user.isEmpty()) connectString.append(QLatin1String(" user=")).append(qQuote(user)); if (!password.isEmpty()) connectString.append(QLatin1String(" password=")).append(qQuote(password)); if (port != -1) connectString.append(QLatin1String(" port=")).append(qQuote(QString::number(port))); // add any connect options - the server will handle error detection if (!connOpts.isEmpty()) { QString opt = connOpts; opt.replace(QLatin1Char(';'), QLatin1Char(' '), Qt::CaseInsensitive); connectString.append(QLatin1Char(' ')).append(opt); } d->connection = PQconnectdb(connectString.toLocal8Bit().constData()); if (PQstatus(d->connection) == CONNECTION_BAD) { PQfinish(d->connection); d->connection = 0; setLastError(qMakeError(tr("Unable to connect"), QSqlError::ConnectionError, d)); setOpenError(true); return false; } d->pro = getPSQLVersion(d->connection); d->isUtf8 = setEncodingUtf8(d->connection); setDatestyle(d->connection); setOpen(true); setOpenError(false); return true; } void QPSQLDriver::close() { if (isOpen()) { if (d->connection) PQfinish(d->connection); d->connection = 0; setOpen(false); setOpenError(false); } } QSqlResult *QPSQLDriver::createResult() const { return new QPSQLResult(this, d); } bool QPSQLDriver::beginTransaction() { if (!isOpen()) { qWarning("QPSQLDriver::beginTransaction: Database not open"); return false; } PGresult* res = PQexec(d->connection, "BEGIN"); if (!res || PQresultStatus(res) != PGRES_COMMAND_OK) { PQclear(res); setLastError(qMakeError(tr("Could not begin transaction"), QSqlError::TransactionError, d)); return false; } PQclear(res); return true; } bool QPSQLDriver::commitTransaction() { if (!isOpen()) { qWarning("QPSQLDriver::commitTransaction: Database not open"); return false; } PGresult* res = PQexec(d->connection, "COMMIT"); if (!res || PQresultStatus(res) != PGRES_COMMAND_OK) { PQclear(res); setLastError(qMakeError(tr("Could not commit transaction"), QSqlError::TransactionError, d)); return false; } PQclear(res); return true; } bool QPSQLDriver::rollbackTransaction() { if (!isOpen()) { qWarning("QPSQLDriver::rollbackTransaction: Database not open"); return false; } PGresult* res = PQexec(d->connection, "ROLLBACK"); if (!res || PQresultStatus(res) != PGRES_COMMAND_OK) { setLastError(qMakeError(tr("Could not rollback transaction"), QSqlError::TransactionError, d)); PQclear(res); return false; } PQclear(res); return true; } QStringList QPSQLDriver::tables(QSql::TableType type) const { QStringList tl; if (!isOpen()) return tl; QSqlQuery t(createResult()); t.setForwardOnly(true); if (type & QSql::Tables) d->appendTables(tl, t, QLatin1Char('r')); if (type & QSql::Views) d->appendTables(tl, t, QLatin1Char('v')); if (type & QSql::SystemTables) { t.exec(QLatin1String("select relname from pg_class where (relkind = 'r') " "and (relname like 'pg_%') ")); while (t.next()) tl.append(t.value(0).toString()); } return tl; } static void qSplitTableName(QString &tablename, QString &schema) { int dot = tablename.indexOf(QLatin1Char('.')); if (dot == -1) return; schema = tablename.left(dot); tablename = tablename.mid(dot + 1); } QSqlIndex QPSQLDriver::primaryIndex(const QString& tablename) const { QSqlIndex idx(tablename); if (!isOpen()) return idx; QSqlQuery i(createResult()); QString stmt; QString tbl = tablename; QString schema; qSplitTableName(tbl, schema); switch(d->pro) { case QPSQLDriver::Version6: stmt = QLatin1String("select pg_att1.attname, int(pg_att1.atttypid), pg_cl.relname " "from pg_attribute pg_att1, pg_attribute pg_att2, pg_class pg_cl, pg_index pg_ind " "where lower(pg_cl.relname) = '%1_pkey' " "and pg_cl.oid = pg_ind.indexrelid " "and pg_att2.attrelid = pg_ind.indexrelid " "and pg_att1.attrelid = pg_ind.indrelid " "and pg_att1.attnum = pg_ind.indkey[pg_att2.attnum-1] " "order by pg_att2.attnum"); break; case QPSQLDriver::Version7: case QPSQLDriver::Version71: stmt = QLatin1String("select pg_att1.attname, pg_att1.atttypid::int, pg_cl.relname " "from pg_attribute pg_att1, pg_attribute pg_att2, pg_class pg_cl, pg_index pg_ind " "where lower(pg_cl.relname) = '%1_pkey' " "and pg_cl.oid = pg_ind.indexrelid " "and pg_att2.attrelid = pg_ind.indexrelid " "and pg_att1.attrelid = pg_ind.indrelid " "and pg_att1.attnum = pg_ind.indkey[pg_att2.attnum-1] " "order by pg_att2.attnum"); break; case QPSQLDriver::Version73: stmt = QLatin1String("SELECT pg_attribute.attname, pg_attribute.atttypid::int, " "pg_class.relname " "FROM pg_attribute, pg_class " "WHERE %1 pg_class.oid = " "(SELECT indexrelid FROM pg_index WHERE indisprimary = true AND indrelid = " " (SELECT oid FROM pg_class WHERE lower(relname) = '%2')) " "AND pg_attribute.attrelid = pg_class.oid " "AND pg_attribute.attisdropped = false " "ORDER BY pg_attribute.attnum"); if (schema.isEmpty()) stmt = stmt.arg(QLatin1String("pg_table_is_visible(pg_class.oid) AND")); else stmt = stmt.arg(QString::fromLatin1("pg_class.relnamespace = (select oid from " "pg_namespace where pg_namespace.nspname = '%1') AND ").arg(schema.toLower())); break; } i.exec(stmt.arg(tbl.toLower())); while (i.isActive() && i.next()) { QSqlField f(i.value(0).toString(), qDecodePSQLType(i.value(1).toInt())); idx.append(f); idx.setName(i.value(2).toString()); } return idx; } QSqlRecord QPSQLDriver::record(const QString& tablename) const { QSqlRecord info; if (!isOpen()) return info; QString tbl = tablename; QString schema; qSplitTableName(tbl, schema); QString stmt; switch(d->pro) { case QPSQLDriver::Version6: stmt = QLatin1String("select pg_attribute.attname, int(pg_attribute.atttypid), " "pg_attribute.attnotnull, pg_attribute.attlen, pg_attribute.atttypmod, " "int(pg_attribute.attrelid), pg_attribute.attnum " "from pg_class, pg_attribute " "where lower(pg_class.relname) = '%1' " "and pg_attribute.attnum > 0 " "and pg_attribute.attrelid = pg_class.oid "); break; case QPSQLDriver::Version7: stmt = QLatin1String("select pg_attribute.attname, pg_attribute.atttypid::int, " "pg_attribute.attnotnull, pg_attribute.attlen, pg_attribute.atttypmod, " "pg_attribute.attrelid::int, pg_attribute.attnum " "from pg_class, pg_attribute " "where lower(pg_class.relname) = '%1' " "and pg_attribute.attnum > 0 " "and pg_attribute.attrelid = pg_class.oid "); break; case QPSQLDriver::Version71: stmt = QLatin1String("select pg_attribute.attname, pg_attribute.atttypid::int, " "pg_attribute.attnotnull, pg_attribute.attlen, pg_attribute.atttypmod, " "pg_attrdef.adsrc " "from pg_class, pg_attribute " "left join pg_attrdef on (pg_attrdef.adrelid = " "pg_attribute.attrelid and pg_attrdef.adnum = pg_attribute.attnum) " "where lower(pg_class.relname) = '%1' " "and pg_attribute.attnum > 0 " "and pg_attribute.attrelid = pg_class.oid " "order by pg_attribute.attnum "); break; case QPSQLDriver::Version73: stmt = QLatin1String("select pg_attribute.attname, pg_attribute.atttypid::int, " "pg_attribute.attnotnull, pg_attribute.attlen, pg_attribute.atttypmod, " "pg_attrdef.adsrc " "from pg_class, pg_attribute " "left join pg_attrdef on (pg_attrdef.adrelid = " "pg_attribute.attrelid and pg_attrdef.adnum = pg_attribute.attnum) " "where %1 " "and lower(pg_class.relname) = '%2' " "and pg_attribute.attnum > 0 " "and pg_attribute.attrelid = pg_class.oid " "and pg_attribute.attisdropped = false " "order by pg_attribute.attnum "); if (schema.isEmpty()) stmt = stmt.arg(QLatin1String("pg_table_is_visible(pg_class.oid)")); else stmt = stmt.arg(QString::fromLatin1("pg_class.relnamespace = (select oid from " "pg_namespace where pg_namespace.nspname = '%1')").arg(schema.toLower())); break; } QSqlQuery query(createResult()); query.exec(stmt.arg(tbl.toLower())); if (d->pro >= QPSQLDriver::Version71) { while (query.next()) { int len = query.value(3).toInt(); int precision = query.value(4).toInt(); // swap length and precision if length == -1 if (len == -1 && precision > -1) { len = precision - 4; precision = -1; } QString defVal = query.value(5).toString(); if (!defVal.isEmpty() && defVal.at(0) == QLatin1Char('\'')) defVal = defVal.mid(1, defVal.length() - 2); QSqlField f(query.value(0).toString(), qDecodePSQLType(query.value(1).toInt())); f.setRequired(query.value(2).toBool()); f.setLength(len); f.setPrecision(precision); f.setDefaultValue(defVal); f.setSqlType(query.value(1).toInt()); info.append(f); } } else { // Postgres < 7.1 cannot handle outer joins while (query.next()) { QString defVal; QString stmt2 = QLatin1String("select pg_attrdef.adsrc from pg_attrdef where " "pg_attrdef.adrelid = %1 and pg_attrdef.adnum = %2 "); QSqlQuery query2(createResult()); query2.exec(stmt2.arg(query.value(5).toInt()).arg(query.value(6).toInt())); if (query2.isActive() && query2.next()) defVal = query2.value(0).toString(); if (!defVal.isEmpty() && defVal.at(0) == QLatin1Char('\'')) defVal = defVal.mid(1, defVal.length() - 2); int len = query.value(3).toInt(); int precision = query.value(4).toInt(); // swap length and precision if length == -1 if (len == -1 && precision > -1) { len = precision - 4; precision = -1; } QSqlField f(query.value(0).toString(), qDecodePSQLType(query.value(1).toInt())); f.setRequired(query.value(2).toBool()); f.setLength(len); f.setPrecision(precision); f.setDefaultValue(defVal); f.setSqlType(query.value(1).toInt()); info.append(f); } } return info; } QString QPSQLDriver::formatValue(const QSqlField &field, bool trimStrings) const { QString r; if (field.isNull()) { r = QLatin1String("NULL"); } else { switch (field.type()) { case QVariant::DateTime: #ifndef QT_NO_DATESTRING if (field.value().toDateTime().isValid()) { QDate dt = field.value().toDateTime().date(); QTime tm = field.value().toDateTime().time(); // msecs need to be right aligned otherwise psql // interpretes them wrong r = QLatin1String("'") + QString::number(dt.year()) + QLatin1String("-") + QString::number(dt.month()) + QLatin1String("-") + QString::number(dt.day()) + QLatin1String(" ") + tm.toString() + QLatin1String(".") + QString::number(tm.msec()).rightJustified(3, QLatin1Char('0')) + QLatin1String("'"); } else #else { r = QLatin1String("NULL"); } #endif // QT_NO_DATESTRING break; case QVariant::Time: #ifndef QT_NO_DATESTRING if (field.value().toTime().isValid()) { r = field.value().toTime().toString(Qt::ISODate); } else #endif { r = QLatin1String("NULL"); } case QVariant::String: { // Escape '\' characters r = QSqlDriver::formatValue(field, trimStrings); r.replace(QLatin1String("\\"), QLatin1String("\\\\")); break; } case QVariant::Bool: if (field.value().toBool()) r = QLatin1String("TRUE"); else r = QLatin1String("FALSE"); break; case QVariant::ByteArray: { QByteArray ba(field.value().toByteArray()); size_t len; unsigned char *data = PQescapeBytea((unsigned char*)ba.constData(), ba.size(), &len); r += QLatin1Char('\''); r += QLatin1String((const char*)data); r += QLatin1Char('\''); qPQfreemem(data); break; } default: r = QSqlDriver::formatValue(field, trimStrings); break; } } return r; } QString QPSQLDriver::escapeIdentifier(const QString &identifier, IdentifierType) const { QString res = identifier; res.replace(QLatin1Char('"'), QLatin1String("\"\"")); res.prepend(QLatin1Char('"')).append(QLatin1Char('"')); res.replace(QLatin1Char('.'), QLatin1String("\".\"")); return res; } bool QPSQLDriver::isOpen() const { return PQstatus(d->connection) == CONNECTION_OK; } QPSQLDriver::Protocol QPSQLDriver::protocol() const { return d->pro; }