cc0473766a
MediaWiki doesn't support PostgreSQL < 9.2, so drop the support for older versions. At the same time, since we're messing with the DatabasePostgres::insert() code anyway, let's start using ON CONFLICT DO NOTHING for PG >= 9.5. And since we're doing that, let's do the same for DatabasePostgres::nativeInsertSelect(). Change-Id: I7bf13c3272917ebafeaff11eb116714a099afdf3
105 lines
2.9 KiB
PHP
105 lines
2.9 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Database
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*/
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namespace Wikimedia\Rdbms;
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use Psr\Log\LoggerInterface;
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/**
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* Manage savepoints within a transaction
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* @ingroup Database
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* @since 1.19
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* @deprecated since 1.31, use IDatabase::startAtomic() and such instead.
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*/
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class SavepointPostgres {
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/** @var DatabasePostgres Establish a savepoint within a transaction */
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protected $dbw;
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/** @var LoggerInterface */
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protected $logger;
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/** @var int */
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protected $id;
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/** @var bool */
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protected $didbegin;
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/**
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* @param DatabasePostgres $dbw
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* @param int $id
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* @param LoggerInterface $logger
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*/
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public function __construct( DatabasePostgres $dbw, $id, LoggerInterface $logger ) {
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$this->dbw = $dbw;
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$this->logger = $logger;
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$this->id = $id;
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$this->didbegin = false;
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/* If we are not in a transaction, we need to be for savepoint trickery */
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if ( !$dbw->trxLevel() ) {
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$dbw->begin( __CLASS__, DatabasePostgres::TRANSACTION_INTERNAL );
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$this->didbegin = true;
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}
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}
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public function __destruct() {
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if ( $this->didbegin ) {
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$this->dbw->rollback();
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$this->didbegin = false;
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}
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}
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public function commit() {
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if ( $this->didbegin ) {
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$this->dbw->commit( __CLASS__, DatabasePostgres::FLUSHING_INTERNAL );
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$this->didbegin = false;
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}
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}
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protected function query( $keyword, $msg_ok, $msg_failed ) {
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if ( $this->dbw->doQuery( $keyword . " " . $this->id ) !== false ) {
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$this->logger->debug( sprintf( $msg_ok, $this->id ) );
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} else {
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$this->logger->debug( sprintf( $msg_failed, $this->id ) );
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}
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}
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public function savepoint() {
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$this->query( "SAVEPOINT",
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"Transaction state: savepoint \"%s\" established.\n",
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"Transaction state: establishment of savepoint \"%s\" FAILED.\n"
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);
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}
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public function release() {
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$this->query( "RELEASE",
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"Transaction state: savepoint \"%s\" released.\n",
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"Transaction state: release of savepoint \"%s\" FAILED.\n"
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);
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}
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public function rollback() {
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$this->query( "ROLLBACK TO",
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"Transaction state: savepoint \"%s\" rolled back.\n",
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"Transaction state: rollback of savepoint \"%s\" FAILED.\n"
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);
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}
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public function __toString() {
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return (string)$this->id;
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}
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}
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