1469 lines
43 KiB
PHP
1469 lines
43 KiB
PHP
<?php
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/**
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* @ingroup Database
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* @file
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* This is the Postgres database abstraction layer.
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*
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*/
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class PostgresField {
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private $name, $tablename, $type, $nullable, $max_length, $deferred, $deferrable, $conname;
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static function fromText($db, $table, $field) {
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global $wgDBmwschema;
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$q = <<<SQL
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SELECT
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attnotnull, attlen, COALESCE(conname, '') AS conname,
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COALESCE(condeferred, 'f') AS deferred,
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COALESCE(condeferrable, 'f') AS deferrable,
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CASE WHEN typname = 'int2' THEN 'smallint'
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WHEN typname = 'int4' THEN 'integer'
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WHEN typname = 'int8' THEN 'bigint'
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WHEN typname = 'bpchar' THEN 'char'
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ELSE typname END AS typname
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FROM pg_class c
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JOIN pg_namespace n ON (n.oid = c.relnamespace)
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JOIN pg_attribute a ON (a.attrelid = c.oid)
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JOIN pg_type t ON (t.oid = a.atttypid)
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LEFT JOIN pg_constraint o ON (o.conrelid = c.oid AND a.attnum = ANY(o.conkey) AND o.contype = 'f')
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WHERE relkind = 'r'
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AND nspname=%s
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AND relname=%s
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AND attname=%s;
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SQL;
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$table = $db->tableName( $table );
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$res = $db->query(sprintf($q,
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$db->addQuotes($wgDBmwschema),
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$db->addQuotes($table),
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$db->addQuotes($field)));
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$row = $db->fetchObject($res);
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if (!$row)
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return null;
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$n = new PostgresField;
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$n->type = $row->typname;
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$n->nullable = ($row->attnotnull == 'f');
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$n->name = $field;
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$n->tablename = $table;
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$n->max_length = $row->attlen;
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$n->deferrable = ($row->deferrable == 't');
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$n->deferred = ($row->deferred == 't');
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$n->conname = $row->conname;
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return $n;
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}
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function name() {
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return $this->name;
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}
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function tableName() {
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return $this->tablename;
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}
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function type() {
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return $this->type;
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}
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function nullable() {
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return $this->nullable;
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}
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function maxLength() {
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return $this->max_length;
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}
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function is_deferrable() {
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return $this->deferrable;
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}
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function is_deferred() {
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return $this->deferred;
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}
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function conname() {
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return $this->conname;
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}
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}
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/**
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* @ingroup Database
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*/
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class DatabasePostgres extends DatabaseBase {
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var $mInsertId = null;
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var $mLastResult = null;
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var $numeric_version = null;
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var $mAffectedRows = null;
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function DatabasePostgres($server = false, $user = false, $password = false, $dbName = false,
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$failFunction = false, $flags = 0 )
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{
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$this->mFailFunction = $failFunction;
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$this->mFlags = $flags;
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$this->open( $server, $user, $password, $dbName);
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}
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function getType() {
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return 'postgres';
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}
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function cascadingDeletes() {
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return true;
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}
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function cleanupTriggers() {
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return true;
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}
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function strictIPs() {
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return true;
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}
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function realTimestamps() {
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return true;
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}
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function implicitGroupby() {
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return false;
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}
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function implicitOrderby() {
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return false;
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}
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function searchableIPs() {
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return true;
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}
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function functionalIndexes() {
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return true;
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}
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function hasConstraint( $name ) {
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global $wgDBmwschema;
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$SQL = "SELECT 1 FROM pg_catalog.pg_constraint c, pg_catalog.pg_namespace n WHERE c.connamespace = n.oid AND conname = '" . pg_escape_string( $name ) . "' AND n.nspname = '" . pg_escape_string($wgDBmwschema) ."'";
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return $this->numRows($res = $this->doQuery($SQL));
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}
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static function newFromParams( $server, $user, $password, $dbName, $failFunction = false, $flags = 0)
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{
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return new DatabasePostgres( $server, $user, $password, $dbName, $failFunction, $flags );
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}
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/**
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* Usually aborts on failure
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* If the failFunction is set to a non-zero integer, returns success
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*/
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function open( $server, $user, $password, $dbName ) {
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# Test for Postgres support, to avoid suppressed fatal error
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if ( !function_exists( 'pg_connect' ) ) {
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throw new DBConnectionError( $this, "Postgres functions missing, have you compiled PHP with the --with-pgsql option?\n (Note: if you recently installed PHP, you may need to restart your webserver and database)\n" );
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}
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global $wgDBport;
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if (!strlen($user)) { ## e.g. the class is being loaded
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return;
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}
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$this->close();
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$this->mServer = $server;
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$this->mPort = $port = $wgDBport;
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$this->mUser = $user;
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$this->mPassword = $password;
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$this->mDBname = $dbName;
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$connectVars = array(
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'dbname' => $dbName,
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'user' => $user,
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'password' => $password );
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if ($server!=false && $server!="") {
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$connectVars['host'] = $server;
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}
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if ($port!=false && $port!="") {
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$connectVars['port'] = $port;
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}
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$connectString = $this->makeConnectionString( $connectVars, PGSQL_CONNECT_FORCE_NEW );
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$this->installErrorHandler();
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$this->mConn = pg_connect( $connectString );
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$phpError = $this->restoreErrorHandler();
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if ( !$this->mConn ) {
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wfDebug( "DB connection error\n" );
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wfDebug( "Server: $server, Database: $dbName, User: $user, Password: " . substr( $password, 0, 3 ) . "...\n" );
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wfDebug( $this->lastError()."\n" );
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if ( !$this->mFailFunction ) {
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throw new DBConnectionError( $this, $phpError );
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} else {
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return false;
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}
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}
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$this->mOpened = true;
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global $wgCommandLineMode;
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## If called from the command-line (e.g. importDump), only show errors
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if ($wgCommandLineMode) {
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$this->doQuery( "SET client_min_messages = 'ERROR'" );
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}
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$this->doQuery( "SET client_encoding='UTF8'" );
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global $wgDBmwschema, $wgDBts2schema;
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if (isset( $wgDBmwschema ) && isset( $wgDBts2schema )
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&& $wgDBmwschema !== 'mediawiki'
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&& preg_match( '/^\w+$/', $wgDBmwschema )
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&& preg_match( '/^\w+$/', $wgDBts2schema )
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) {
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$safeschema = $this->quote_ident($wgDBmwschema);
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$safeschema2 = $this->quote_ident($wgDBts2schema);
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$this->doQuery( "SET search_path = $safeschema, $wgDBts2schema, public" );
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}
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return $this->mConn;
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}
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function makeConnectionString( $vars ) {
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$s = '';
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foreach ( $vars as $name => $value ) {
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$s .= "$name='" . str_replace( "'", "\\'", $value ) . "' ";
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}
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return $s;
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}
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function initial_setup($password, $dbName) {
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// If this is the initial connection, setup the schema stuff and possibly create the user
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global $wgDBname, $wgDBuser, $wgDBpassword, $wgDBsuperuser, $wgDBmwschema, $wgDBts2schema;
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print "<li>Checking the version of Postgres...";
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$version = $this->getServerVersion();
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$PGMINVER = '8.1';
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if ($version < $PGMINVER) {
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print "<b>FAILED</b>. Required version is $PGMINVER. You have " . htmlspecialchars( $version ) . "</li>\n";
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dieout("</ul>");
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}
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print "version " . htmlspecialchars( $this->numeric_version ) . " is OK.</li>\n";
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$safeuser = $this->quote_ident($wgDBuser);
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// Are we connecting as a superuser for the first time?
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if ($wgDBsuperuser) {
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// Are we really a superuser? Check out our rights
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$SQL = "SELECT
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CASE WHEN usesuper IS TRUE THEN
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CASE WHEN usecreatedb IS TRUE THEN 3 ELSE 1 END
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ELSE CASE WHEN usecreatedb IS TRUE THEN 2 ELSE 0 END
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END AS rights
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FROM pg_catalog.pg_user WHERE usename = " . $this->addQuotes($wgDBsuperuser);
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$rows = $this->numRows($res = $this->doQuery($SQL));
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if (!$rows) {
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print "<li>ERROR: Could not read permissions for user \"" . htmlspecialchars( $wgDBsuperuser ) . "\"</li>\n";
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dieout('</ul>');
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}
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$perms = pg_fetch_result($res, 0, 0);
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$SQL = "SELECT 1 FROM pg_catalog.pg_user WHERE usename = " . $this->addQuotes($wgDBuser);
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$rows = $this->numRows($this->doQuery($SQL));
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if ($rows) {
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print "<li>User \"" . htmlspecialchars( $wgDBuser ) . "\" already exists, skipping account creation.</li>";
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}
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else {
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if ($perms != 1 and $perms != 3) {
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print "<li>ERROR: the user \"" . htmlspecialchars( $wgDBsuperuser ) . "\" cannot create other users. ";
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print 'Please use a different Postgres user.</li>';
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dieout('</ul>');
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}
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print "<li>Creating user <b>" . htmlspecialchars( $wgDBuser ) . "</b>...";
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$safepass = $this->addQuotes($wgDBpassword);
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$SQL = "CREATE USER $safeuser NOCREATEDB PASSWORD $safepass";
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$this->doQuery($SQL);
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print "OK</li>\n";
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}
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// User now exists, check out the database
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if ($dbName != $wgDBname) {
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$SQL = "SELECT 1 FROM pg_catalog.pg_database WHERE datname = " . $this->addQuotes($wgDBname);
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$rows = $this->numRows($this->doQuery($SQL));
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if ($rows) {
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print "<li>Database \"" . htmlspecialchars( $wgDBname ) . "\" already exists, skipping database creation.</li>";
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}
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else {
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if ($perms < 1) {
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print "<li>ERROR: the user \"" . htmlspecialchars( $wgDBsuperuser ) . "\" cannot create databases. ";
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print 'Please use a different Postgres user.</li>';
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dieout('</ul>');
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}
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print "<li>Creating database <b>" . htmlspecialchars( $wgDBname ) . "</b>...";
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$safename = $this->quote_ident($wgDBname);
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$SQL = "CREATE DATABASE $safename OWNER $safeuser ";
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$this->doQuery($SQL);
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print "OK</li>\n";
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// Hopefully tsearch2 and plpgsql are in template1...
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}
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// Reconnect to check out tsearch2 rights for this user
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print "<li>Connecting to \"" . htmlspecialchars( $wgDBname ) . "\" as superuser \"" .
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htmlspecialchars( $wgDBsuperuser ) . "\" to check rights...";
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$connectVars = array();
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if ($this->mServer!=false && $this->mServer!="") {
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$connectVars['host'] = $this->mServer;
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}
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if ($this->mPort!=false && $this->mPort!="") {
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$connectVars['port'] = $this->mPort;
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}
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$connectVars['dbname'] = $wgDBname;
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$connectVars['user'] = $wgDBsuperuser;
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$connectVars['password'] = $password;
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@$this->mConn = pg_connect( $this->makeConnectionString( $connectVars ) );
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if ( !$this->mConn ) {
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print "<b>FAILED TO CONNECT!</b></li>";
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dieout("</ul>");
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}
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print "OK</li>\n";
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}
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if ($this->numeric_version < 8.3) {
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// Tsearch2 checks
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print "<li>Checking that tsearch2 is installed in the database \"" .
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htmlspecialchars( $wgDBname ) . "\"...";
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if (! $this->tableExists("pg_ts_cfg", $wgDBts2schema)) {
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print "<b>FAILED</b>. tsearch2 must be installed in the database \"" .
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htmlspecialchars( $wgDBname ) . "\".";
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print "Please see <a href='http://www.devx.com/opensource/Article/21674/0/page/2'>this article</a>";
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print " for instructions or ask on #postgresql on irc.freenode.net</li>\n";
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dieout("</ul>");
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}
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print "OK</li>\n";
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print "<li>Ensuring that user \"" . htmlspecialchars( $wgDBuser ) .
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"\" has select rights on the tsearch2 tables...";
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foreach (array('cfg','cfgmap','dict','parser') as $table) {
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$SQL = "GRANT SELECT ON pg_ts_$table TO $safeuser";
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$this->doQuery($SQL);
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}
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print "OK</li>\n";
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}
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// Setup the schema for this user if needed
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$result = $this->schemaExists($wgDBmwschema);
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$safeschema = $this->quote_ident($wgDBmwschema);
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if (!$result) {
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print "<li>Creating schema <b>" . htmlspecialchars( $wgDBmwschema ) . "</b> ...";
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$result = $this->doQuery("CREATE SCHEMA $safeschema AUTHORIZATION $safeuser");
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if (!$result) {
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print "<b>FAILED</b>.</li>\n";
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dieout("</ul>");
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}
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print "OK</li>\n";
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}
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else {
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print "<li>Schema already exists, explicitly granting rights...\n";
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$safeschema2 = $this->addQuotes($wgDBmwschema);
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$SQL = "SELECT 'GRANT ALL ON '||pg_catalog.quote_ident(relname)||' TO $safeuser;'\n".
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"FROM pg_catalog.pg_class p, pg_catalog.pg_namespace n\n".
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"WHERE relnamespace = n.oid AND n.nspname = $safeschema2\n".
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"AND p.relkind IN ('r','S','v')\n";
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$SQL .= "UNION\n";
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$SQL .= "SELECT 'GRANT ALL ON FUNCTION '||pg_catalog.quote_ident(proname)||'('||\n".
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"pg_catalog.oidvectortypes(p.proargtypes)||') TO $safeuser;'\n".
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"FROM pg_catalog.pg_proc p, pg_catalog.pg_namespace n\n".
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"WHERE p.pronamespace = n.oid AND n.nspname = $safeschema2";
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$res = $this->doQuery($SQL);
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if (!$res) {
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print "<b>FAILED</b>. Could not set rights for the user.</li>\n";
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dieout("</ul>");
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}
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$this->doQuery("SET search_path = $safeschema");
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$rows = $this->numRows($res);
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while ($rows) {
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$rows--;
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$this->doQuery(pg_fetch_result($res, $rows, 0));
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}
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print "OK</li>";
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}
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// Install plpgsql if needed
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$this->setup_plpgsql();
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$wgDBsuperuser = '';
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return true; // Reconnect as regular user
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|
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} // end superuser
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|
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if (!defined('POSTGRES_SEARCHPATH')) {
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|
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if ($this->numeric_version < 8.3) {
|
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// Do we have the basic tsearch2 table?
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print "<li>Checking for tsearch2 in the schema \"" . htmlspecialchars( $wgDBts2schema ) . "\"...";
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if (! $this->tableExists("pg_ts_dict", $wgDBts2schema)) {
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print "<b>FAILED</b>. Make sure tsearch2 is installed. See <a href=";
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print "'http://www.devx.com/opensource/Article/21674/0/page/2'>this article</a>";
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print " for instructions.</li>\n";
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dieout("</ul>");
|
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}
|
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print "OK</li>\n";
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|
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// Does this user have the rights to the tsearch2 tables?
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$ctype = pg_fetch_result($this->doQuery("SHOW lc_ctype"),0,0);
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print "<li>Checking tsearch2 permissions...";
|
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// Let's check all four, just to be safe
|
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error_reporting( 0 );
|
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$ts2tables = array('cfg','cfgmap','dict','parser');
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$safetsschema = $this->quote_ident($wgDBts2schema);
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foreach ( $ts2tables AS $tname ) {
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$SQL = "SELECT count(*) FROM $safetsschema.pg_ts_$tname";
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$res = $this->doQuery($SQL);
|
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if (!$res) {
|
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print "<b>FAILED</b> to access " . htmlspecialchars( "pg_ts_$tname" ) .
|
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". Make sure that the user \"". htmlspecialchars( $wgDBuser ) .
|
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"\" has SELECT access to all four tsearch2 tables</li>\n";
|
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dieout("</ul>");
|
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}
|
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}
|
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$SQL = "SELECT ts_name FROM $safetsschema.pg_ts_cfg WHERE locale = " . $this->addQuotes( $ctype ) ;
|
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$SQL .= " ORDER BY CASE WHEN ts_name <> 'default' THEN 1 ELSE 0 END";
|
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$res = $this->doQuery($SQL);
|
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error_reporting( E_ALL );
|
|
if (!$res) {
|
|
print "<b>FAILED</b>. Could not determine the tsearch2 locale information</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
print "OK</li>";
|
|
|
|
// Will the current locale work? Can we force it to?
|
|
print "<li>Verifying tsearch2 locale with " . htmlspecialchars( $ctype ) . "...";
|
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$rows = $this->numRows($res);
|
|
$resetlocale = 0;
|
|
if (!$rows) {
|
|
print "<b>not found</b></li>\n";
|
|
print "<li>Attempting to set default tsearch2 locale to \"" . htmlspecialchars( $ctype ) . "\"...";
|
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$resetlocale = 1;
|
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}
|
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else {
|
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$tsname = pg_fetch_result($res, 0, 0);
|
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if ($tsname != 'default') {
|
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print "<b>not set to default (" . htmlspecialchars( $tsname ) . ")</b>";
|
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print "<li>Attempting to change tsearch2 default locale to \"" .
|
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htmlspecialchars( $ctype ) . "\"...";
|
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$resetlocale = 1;
|
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}
|
|
}
|
|
if ($resetlocale) {
|
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$SQL = "UPDATE $safetsschema.pg_ts_cfg SET locale = " . $this->addQuotes( $ctype ) . " WHERE ts_name = 'default'";
|
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$res = $this->doQuery($SQL);
|
|
if (!$res) {
|
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print "<b>FAILED</b>. ";
|
|
print "Please make sure that the locale in pg_ts_cfg for \"default\" is set to \"" .
|
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htmlspecialchars( $ctype ) . "\"</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
print "OK</li>";
|
|
}
|
|
|
|
// Final test: try out a simple tsearch2 query
|
|
$SQL = "SELECT $safetsschema.to_tsvector('default','MediaWiki tsearch2 testing')";
|
|
$res = $this->doQuery($SQL);
|
|
if (!$res) {
|
|
print "<b>FAILED</b>. Specifically, \"" . htmlspecialchars( $SQL ) . "\" did not work.</li>";
|
|
dieout("</ul>");
|
|
}
|
|
print "OK</li>";
|
|
}
|
|
|
|
// Install plpgsql if needed
|
|
$this->setup_plpgsql();
|
|
|
|
// Does the schema already exist? Who owns it?
|
|
$result = $this->schemaExists($wgDBmwschema);
|
|
if (!$result) {
|
|
print "<li>Creating schema <b>" . htmlspecialchars( $wgDBmwschema ) . "</b> ...";
|
|
error_reporting( 0 );
|
|
$safeschema = $this->quote_ident($wgDBmwschema);
|
|
$result = $this->doQuery("CREATE SCHEMA $safeschema");
|
|
error_reporting( E_ALL );
|
|
if (!$result) {
|
|
print "<b>FAILED</b>. The user \"" . htmlspecialchars( $wgDBuser ) .
|
|
"\" must be able to access the schema. ".
|
|
"You can try making them the owner of the database, or try creating the schema with a ".
|
|
"different user, and then grant access to the \"" .
|
|
htmlspecialchars( $wgDBuser ) . "\" user.</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
print "OK</li>\n";
|
|
}
|
|
else if ($result != $wgDBuser) {
|
|
print "<li>Schema \"" . htmlspecialchars( $wgDBmwschema ) . "\" exists but is not owned by \"" .
|
|
htmlspecialchars( $wgDBuser ) . "\". Not ideal.</li>\n";
|
|
}
|
|
else {
|
|
print "<li>Schema \"" . htmlspecialchars( $wgDBmwschema ) . "\" exists and is owned by \"" .
|
|
htmlspecialchars( $wgDBuser ) . "\". Excellent.</li>\n";
|
|
}
|
|
|
|
// Always return GMT time to accomodate the existing integer-based timestamp assumption
|
|
print "<li>Setting the timezone to GMT for user \"" . htmlspecialchars( $wgDBuser ) . "\" ...";
|
|
$SQL = "ALTER USER $safeuser SET timezone = 'GMT'";
|
|
$result = pg_query($this->mConn, $SQL);
|
|
if (!$result) {
|
|
print "<b>FAILED</b>.</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
print "OK</li>\n";
|
|
// Set for the rest of this session
|
|
$SQL = "SET timezone = 'GMT'";
|
|
$result = pg_query($this->mConn, $SQL);
|
|
if (!$result) {
|
|
print "<li>Failed to set timezone</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
|
|
print "<li>Setting the datestyle to ISO, YMD for user \"" . htmlspecialchars( $wgDBuser ) . "\" ...";
|
|
$SQL = "ALTER USER $safeuser SET datestyle = 'ISO, YMD'";
|
|
$result = pg_query($this->mConn, $SQL);
|
|
if (!$result) {
|
|
print "<b>FAILED</b>.</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
print "OK</li>\n";
|
|
// Set for the rest of this session
|
|
$SQL = "SET datestyle = 'ISO, YMD'";
|
|
$result = pg_query($this->mConn, $SQL);
|
|
if (!$result) {
|
|
print "<li>Failed to set datestyle</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
|
|
// Fix up the search paths if needed
|
|
print "<li>Setting the search path for user \"" . htmlspecialchars( $wgDBuser ) . "\" ...";
|
|
$path = $this->quote_ident($wgDBmwschema);
|
|
if ($wgDBts2schema !== $wgDBmwschema)
|
|
$path .= ", ". $this->quote_ident($wgDBts2schema);
|
|
if ($wgDBmwschema !== 'public' and $wgDBts2schema !== 'public')
|
|
$path .= ", public";
|
|
$SQL = "ALTER USER $safeuser SET search_path = $path";
|
|
$result = pg_query($this->mConn, $SQL);
|
|
if (!$result) {
|
|
print "<b>FAILED</b>.</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
print "OK</li>\n";
|
|
// Set for the rest of this session
|
|
$SQL = "SET search_path = $path";
|
|
$result = pg_query($this->mConn, $SQL);
|
|
if (!$result) {
|
|
print "<li>Failed to set search_path</li>\n";
|
|
dieout("</ul>");
|
|
}
|
|
define( "POSTGRES_SEARCHPATH", $path );
|
|
}
|
|
}
|
|
|
|
|
|
function setup_plpgsql() {
|
|
print "<li>Checking for Pl/Pgsql ...";
|
|
$SQL = "SELECT 1 FROM pg_catalog.pg_language WHERE lanname = 'plpgsql'";
|
|
$rows = $this->numRows($this->doQuery($SQL));
|
|
if ($rows < 1) {
|
|
// plpgsql is not installed, but if we have a pg_pltemplate table, we should be able to create it
|
|
print "not installed. Attempting to install Pl/Pgsql ...";
|
|
$SQL = "SELECT 1 FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON (n.oid = c.relnamespace) ".
|
|
"WHERE relname = 'pg_pltemplate' AND nspname='pg_catalog'";
|
|
$rows = $this->numRows($this->doQuery($SQL));
|
|
if ($rows >= 1) {
|
|
$olde = error_reporting(0);
|
|
error_reporting($olde - E_WARNING);
|
|
$result = $this->doQuery("CREATE LANGUAGE plpgsql");
|
|
error_reporting($olde);
|
|
if (!$result) {
|
|
print "<b>FAILED</b>. You need to install the language plpgsql in the database <tt>" .
|
|
htmlspecialchars( $wgDBname ) . "</tt></li>";
|
|
dieout("</ul>");
|
|
}
|
|
}
|
|
else {
|
|
print "<b>FAILED</b>. You need to install the language plpgsql in the database <tt>" .
|
|
htmlspecialchars( $wgDBname ) . "</tt></li>";
|
|
dieout("</ul>");
|
|
}
|
|
}
|
|
print "OK</li>\n";
|
|
}
|
|
|
|
|
|
/**
|
|
* Closes a database connection, if it is open
|
|
* Returns success, true if already closed
|
|
*/
|
|
function close() {
|
|
$this->mOpened = false;
|
|
if ( $this->mConn ) {
|
|
return pg_close( $this->mConn );
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
function doQuery( $sql ) {
|
|
if (function_exists('mb_convert_encoding')) {
|
|
$sql = mb_convert_encoding($sql,'UTF-8');
|
|
}
|
|
$this->mLastResult = pg_query( $this->mConn, $sql);
|
|
$this->mAffectedRows = null; // use pg_affected_rows(mLastResult)
|
|
return $this->mLastResult;
|
|
}
|
|
|
|
function queryIgnore( $sql, $fname = '' ) {
|
|
return $this->query( $sql, $fname, true );
|
|
}
|
|
|
|
function freeResult( $res ) {
|
|
if ( $res instanceof ResultWrapper ) {
|
|
$res = $res->result;
|
|
}
|
|
if ( !@pg_free_result( $res ) ) {
|
|
throw new DBUnexpectedError($this, "Unable to free Postgres result\n" );
|
|
}
|
|
}
|
|
|
|
function fetchObject( $res ) {
|
|
if ( $res instanceof ResultWrapper ) {
|
|
$res = $res->result;
|
|
}
|
|
@$row = pg_fetch_object( $res );
|
|
# FIXME: HACK HACK HACK HACK debug
|
|
|
|
# TODO:
|
|
# hashar : not sure if the following test really trigger if the object
|
|
# fetching failed.
|
|
if( pg_last_error($this->mConn) ) {
|
|
throw new DBUnexpectedError($this, 'SQL error: ' . htmlspecialchars( pg_last_error($this->mConn) ) );
|
|
}
|
|
return $row;
|
|
}
|
|
|
|
function fetchRow( $res ) {
|
|
if ( $res instanceof ResultWrapper ) {
|
|
$res = $res->result;
|
|
}
|
|
@$row = pg_fetch_array( $res );
|
|
if( pg_last_error($this->mConn) ) {
|
|
throw new DBUnexpectedError($this, 'SQL error: ' . htmlspecialchars( pg_last_error($this->mConn) ) );
|
|
}
|
|
return $row;
|
|
}
|
|
|
|
function numRows( $res ) {
|
|
if ( $res instanceof ResultWrapper ) {
|
|
$res = $res->result;
|
|
}
|
|
@$n = pg_num_rows( $res );
|
|
if( pg_last_error($this->mConn) ) {
|
|
throw new DBUnexpectedError($this, 'SQL error: ' . htmlspecialchars( pg_last_error($this->mConn) ) );
|
|
}
|
|
return $n;
|
|
}
|
|
function numFields( $res ) {
|
|
if ( $res instanceof ResultWrapper ) {
|
|
$res = $res->result;
|
|
}
|
|
return pg_num_fields( $res );
|
|
}
|
|
function fieldName( $res, $n ) {
|
|
if ( $res instanceof ResultWrapper ) {
|
|
$res = $res->result;
|
|
}
|
|
return pg_field_name( $res, $n );
|
|
}
|
|
|
|
/**
|
|
* This must be called after nextSequenceVal
|
|
*/
|
|
function insertId() {
|
|
return $this->mInsertId;
|
|
}
|
|
|
|
function dataSeek( $res, $row ) {
|
|
if ( $res instanceof ResultWrapper ) {
|
|
$res = $res->result;
|
|
}
|
|
return pg_result_seek( $res, $row );
|
|
}
|
|
|
|
function lastError() {
|
|
if ( $this->mConn ) {
|
|
return pg_last_error();
|
|
}
|
|
else {
|
|
return "No database connection";
|
|
}
|
|
}
|
|
function lastErrno() {
|
|
return pg_last_error() ? 1 : 0;
|
|
}
|
|
|
|
function affectedRows() {
|
|
if ( !is_null( $this->mAffectedRows ) ) {
|
|
// Forced result for simulated queries
|
|
return $this->mAffectedRows;
|
|
}
|
|
if( empty( $this->mLastResult ) )
|
|
return 0;
|
|
return pg_affected_rows( $this->mLastResult );
|
|
}
|
|
|
|
/**
|
|
* Estimate rows in dataset
|
|
* Returns estimated count, based on EXPLAIN output
|
|
* This is not necessarily an accurate estimate, so use sparingly
|
|
* Returns -1 if count cannot be found
|
|
* Takes same arguments as Database::select()
|
|
*/
|
|
|
|
function estimateRowCount( $table, $vars='*', $conds='', $fname = 'DatabasePostgres::estimateRowCount', $options = array() ) {
|
|
$options['EXPLAIN'] = true;
|
|
$res = $this->select( $table, $vars, $conds, $fname, $options );
|
|
$rows = -1;
|
|
if ( $res ) {
|
|
$row = $this->fetchRow( $res );
|
|
$count = array();
|
|
if( preg_match( '/rows=(\d+)/', $row[0], $count ) ) {
|
|
$rows = $count[1];
|
|
}
|
|
$this->freeResult($res);
|
|
}
|
|
return $rows;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns information about an index
|
|
* If errors are explicitly ignored, returns NULL on failure
|
|
*/
|
|
function indexInfo( $table, $index, $fname = 'DatabasePostgres::indexInfo' ) {
|
|
$sql = "SELECT indexname FROM pg_indexes WHERE tablename='$table'";
|
|
$res = $this->query( $sql, $fname );
|
|
if ( !$res ) {
|
|
return null;
|
|
}
|
|
while ( $row = $this->fetchObject( $res ) ) {
|
|
if ( $row->indexname == $this->indexName( $index ) ) {
|
|
return $row;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function indexUnique ($table, $index, $fname = 'DatabasePostgres::indexUnique' ) {
|
|
$sql = "SELECT indexname FROM pg_indexes WHERE tablename='{$table}'".
|
|
" AND indexdef LIKE 'CREATE UNIQUE%(" .
|
|
$this->strencode( $this->indexName( $index ) ) .
|
|
")'";
|
|
$res = $this->query( $sql, $fname );
|
|
if ( !$res )
|
|
return null;
|
|
while ($row = $this->fetchObject( $res ))
|
|
return true;
|
|
return false;
|
|
|
|
}
|
|
|
|
/**
|
|
* INSERT wrapper, inserts an array into a table
|
|
*
|
|
* $args may be a single associative array, or an array of these with numeric keys,
|
|
* for multi-row insert (Postgres version 8.2 and above only).
|
|
*
|
|
* @param $table String: Name of the table to insert to.
|
|
* @param $args Array: Items to insert into the table.
|
|
* @param $fname String: Name of the function, for profiling
|
|
* @param $options String or Array. Valid options: IGNORE
|
|
*
|
|
* @return bool Success of insert operation. IGNORE always returns true.
|
|
*/
|
|
function insert( $table, $args, $fname = 'DatabasePostgres::insert', $options = array() ) {
|
|
global $wgDBversion;
|
|
|
|
if ( !count( $args ) ) {
|
|
return true;
|
|
}
|
|
|
|
$table = $this->tableName( $table );
|
|
if (! isset( $wgDBversion ) ) {
|
|
$wgDBversion = $this->getServerVersion();
|
|
}
|
|
|
|
if ( !is_array( $options ) )
|
|
$options = array( $options );
|
|
|
|
if ( isset( $args[0] ) && is_array( $args[0] ) ) {
|
|
$multi = true;
|
|
$keys = array_keys( $args[0] );
|
|
}
|
|
else {
|
|
$multi = false;
|
|
$keys = array_keys( $args );
|
|
}
|
|
|
|
// If IGNORE is set, we use savepoints to emulate mysql's behavior
|
|
$ignore = in_array( 'IGNORE', $options ) ? 'mw' : '';
|
|
|
|
// If we are not in a transaction, we need to be for savepoint trickery
|
|
$didbegin = 0;
|
|
if ( $ignore ) {
|
|
if (! $this->mTrxLevel) {
|
|
$this->begin();
|
|
$didbegin = 1;
|
|
}
|
|
$olde = error_reporting( 0 );
|
|
// For future use, we may want to track the number of actual inserts
|
|
// Right now, insert (all writes) simply return true/false
|
|
$numrowsinserted = 0;
|
|
}
|
|
|
|
$sql = "INSERT INTO $table (" . implode( ',', $keys ) . ') VALUES ';
|
|
|
|
if ( $multi ) {
|
|
if ( $wgDBversion >= 8.2 && !$ignore ) {
|
|
$first = true;
|
|
foreach ( $args as $row ) {
|
|
if ( $first ) {
|
|
$first = false;
|
|
} else {
|
|
$sql .= ',';
|
|
}
|
|
$sql .= '(' . $this->makeList( $row ) . ')';
|
|
}
|
|
$res = (bool)$this->query( $sql, $fname, $ignore );
|
|
}
|
|
else {
|
|
$res = true;
|
|
$origsql = $sql;
|
|
foreach ( $args as $row ) {
|
|
$tempsql = $origsql;
|
|
$tempsql .= '(' . $this->makeList( $row ) . ')';
|
|
|
|
if ( $ignore ) {
|
|
pg_query($this->mConn, "SAVEPOINT $ignore");
|
|
}
|
|
|
|
$tempres = (bool)$this->query( $tempsql, $fname, $ignore );
|
|
|
|
if ( $ignore ) {
|
|
$bar = pg_last_error();
|
|
if ($bar != false) {
|
|
pg_query( $this->mConn, "ROLLBACK TO $ignore" );
|
|
}
|
|
else {
|
|
pg_query( $this->mConn, "RELEASE $ignore" );
|
|
$numrowsinserted++;
|
|
}
|
|
}
|
|
|
|
// If any of them fail, we fail overall for this function call
|
|
// Note that this will be ignored if IGNORE is set
|
|
if (! $tempres)
|
|
$res = false;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// Not multi, just a lone insert
|
|
if ( $ignore ) {
|
|
pg_query($this->mConn, "SAVEPOINT $ignore");
|
|
}
|
|
|
|
$sql .= '(' . $this->makeList( $args ) . ')';
|
|
$res = (bool)$this->query( $sql, $fname, $ignore );
|
|
if ( $ignore ) {
|
|
$bar = pg_last_error();
|
|
if ($bar != false) {
|
|
pg_query( $this->mConn, "ROLLBACK TO $ignore" );
|
|
}
|
|
else {
|
|
pg_query( $this->mConn, "RELEASE $ignore" );
|
|
$numrowsinserted++;
|
|
}
|
|
}
|
|
}
|
|
if ( $ignore ) {
|
|
$olde = error_reporting( $olde );
|
|
if ($didbegin) {
|
|
$this->commit();
|
|
}
|
|
|
|
// Set the affected row count for the whole operation
|
|
$this->mAffectedRows = $numrowsinserted;
|
|
|
|
// IGNORE always returns true
|
|
return true;
|
|
}
|
|
|
|
|
|
return $res;
|
|
|
|
}
|
|
|
|
/**
|
|
* INSERT SELECT wrapper
|
|
* $varMap must be an associative array of the form array( 'dest1' => 'source1', ...)
|
|
* Source items may be literals rather then field names, but strings should be quoted with Database::addQuotes()
|
|
* $conds may be "*" to copy the whole table
|
|
* srcTable may be an array of tables.
|
|
* @todo FIXME: implement this a little better (seperate select/insert)?
|
|
*/
|
|
function insertSelect( $destTable, $srcTable, $varMap, $conds, $fname = 'DatabasePostgres::insertSelect',
|
|
$insertOptions = array(), $selectOptions = array() )
|
|
{
|
|
$destTable = $this->tableName( $destTable );
|
|
|
|
// If IGNORE is set, we use savepoints to emulate mysql's behavior
|
|
$ignore = in_array( 'IGNORE', $insertOptions ) ? 'mw' : '';
|
|
|
|
if( is_array( $insertOptions ) ) {
|
|
$insertOptions = implode( ' ', $insertOptions );
|
|
}
|
|
if( !is_array( $selectOptions ) ) {
|
|
$selectOptions = array( $selectOptions );
|
|
}
|
|
list( $startOpts, $useIndex, $tailOpts ) = $this->makeSelectOptions( $selectOptions );
|
|
if( is_array( $srcTable ) ) {
|
|
$srcTable = implode( ',', array_map( array( &$this, 'tableName' ), $srcTable ) );
|
|
} else {
|
|
$srcTable = $this->tableName( $srcTable );
|
|
}
|
|
|
|
// If we are not in a transaction, we need to be for savepoint trickery
|
|
$didbegin = 0;
|
|
if ( $ignore ) {
|
|
if( !$this->mTrxLevel ) {
|
|
$this->begin();
|
|
$didbegin = 1;
|
|
}
|
|
$olde = error_reporting( 0 );
|
|
$numrowsinserted = 0;
|
|
pg_query( $this->mConn, "SAVEPOINT $ignore");
|
|
}
|
|
|
|
$sql = "INSERT INTO $destTable (" . implode( ',', array_keys( $varMap ) ) . ')' .
|
|
" SELECT $startOpts " . implode( ',', $varMap ) .
|
|
" FROM $srcTable $useIndex";
|
|
|
|
if ( $conds != '*') {
|
|
$sql .= ' WHERE ' . $this->makeList( $conds, LIST_AND );
|
|
}
|
|
|
|
$sql .= " $tailOpts";
|
|
|
|
$res = (bool)$this->query( $sql, $fname, $ignore );
|
|
if( $ignore ) {
|
|
$bar = pg_last_error();
|
|
if( $bar != false ) {
|
|
pg_query( $this->mConn, "ROLLBACK TO $ignore" );
|
|
} else {
|
|
pg_query( $this->mConn, "RELEASE $ignore" );
|
|
$numrowsinserted++;
|
|
}
|
|
$olde = error_reporting( $olde );
|
|
if( $didbegin ) {
|
|
$this->commit();
|
|
}
|
|
|
|
// Set the affected row count for the whole operation
|
|
$this->mAffectedRows = $numrowsinserted;
|
|
|
|
// IGNORE always returns true
|
|
return true;
|
|
}
|
|
|
|
return $res;
|
|
}
|
|
|
|
function tableName( $name ) {
|
|
# Replace reserved words with better ones
|
|
switch( $name ) {
|
|
case 'user':
|
|
return 'mwuser';
|
|
case 'text':
|
|
return 'pagecontent';
|
|
default:
|
|
return $name;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the next in a sequence, save the value for retrieval via insertId()
|
|
*/
|
|
function nextSequenceValue( $seqName ) {
|
|
$safeseq = preg_replace( "/'/", "''", $seqName );
|
|
$res = $this->query( "SELECT nextval('$safeseq')" );
|
|
$row = $this->fetchRow( $res );
|
|
$this->mInsertId = $row[0];
|
|
$this->freeResult( $res );
|
|
return $this->mInsertId;
|
|
}
|
|
|
|
/**
|
|
* Return the current value of a sequence. Assumes it has been nextval'ed in this session.
|
|
*/
|
|
function currentSequenceValue( $seqName ) {
|
|
$safeseq = preg_replace( "/'/", "''", $seqName );
|
|
$res = $this->query( "SELECT currval('$safeseq')" );
|
|
$row = $this->fetchRow( $res );
|
|
$currval = $row[0];
|
|
$this->freeResult( $res );
|
|
return $currval;
|
|
}
|
|
|
|
# REPLACE query wrapper
|
|
# Postgres simulates this with a DELETE followed by INSERT
|
|
# $row is the row to insert, an associative array
|
|
# $uniqueIndexes is an array of indexes. Each element may be either a
|
|
# field name or an array of field names
|
|
#
|
|
# It may be more efficient to leave off unique indexes which are unlikely to collide.
|
|
# However if you do this, you run the risk of encountering errors which wouldn't have
|
|
# occurred in MySQL
|
|
function replace( $table, $uniqueIndexes, $rows, $fname = 'DatabasePostgres::replace' ) {
|
|
$table = $this->tableName( $table );
|
|
|
|
if (count($rows)==0) {
|
|
return;
|
|
}
|
|
|
|
# Single row case
|
|
if ( !is_array( reset( $rows ) ) ) {
|
|
$rows = array( $rows );
|
|
}
|
|
|
|
foreach( $rows as $row ) {
|
|
# Delete rows which collide
|
|
if ( $uniqueIndexes ) {
|
|
$sql = "DELETE FROM $table WHERE ";
|
|
$first = true;
|
|
foreach ( $uniqueIndexes as $index ) {
|
|
if ( $first ) {
|
|
$first = false;
|
|
$sql .= "(";
|
|
} else {
|
|
$sql .= ') OR (';
|
|
}
|
|
if ( is_array( $index ) ) {
|
|
$first2 = true;
|
|
foreach ( $index as $col ) {
|
|
if ( $first2 ) {
|
|
$first2 = false;
|
|
} else {
|
|
$sql .= ' AND ';
|
|
}
|
|
$sql .= $col.'=' . $this->addQuotes( $row[$col] );
|
|
}
|
|
} else {
|
|
$sql .= $index.'=' . $this->addQuotes( $row[$index] );
|
|
}
|
|
}
|
|
$sql .= ')';
|
|
$this->query( $sql, $fname );
|
|
}
|
|
|
|
# Now insert the row
|
|
$sql = "INSERT INTO $table (" . $this->makeList( array_keys( $row ), LIST_NAMES ) .') VALUES (' .
|
|
$this->makeList( $row, LIST_COMMA ) . ')';
|
|
$this->query( $sql, $fname );
|
|
}
|
|
}
|
|
|
|
# DELETE where the condition is a join
|
|
function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = 'DatabasePostgres::deleteJoin' ) {
|
|
if ( !$conds ) {
|
|
throw new DBUnexpectedError($this, 'Database::deleteJoin() called with empty $conds' );
|
|
}
|
|
|
|
$delTable = $this->tableName( $delTable );
|
|
$joinTable = $this->tableName( $joinTable );
|
|
$sql = "DELETE FROM $delTable WHERE $delVar IN (SELECT $joinVar FROM $joinTable ";
|
|
if ( $conds != '*' ) {
|
|
$sql .= 'WHERE ' . $this->makeList( $conds, LIST_AND );
|
|
}
|
|
$sql .= ')';
|
|
|
|
$this->query( $sql, $fname );
|
|
}
|
|
|
|
# Returns the size of a text field, or -1 for "unlimited"
|
|
function textFieldSize( $table, $field ) {
|
|
$table = $this->tableName( $table );
|
|
$sql = "SELECT t.typname as ftype,a.atttypmod as size
|
|
FROM pg_class c, pg_attribute a, pg_type t
|
|
WHERE relname='$table' AND a.attrelid=c.oid AND
|
|
a.atttypid=t.oid and a.attname='$field'";
|
|
$res =$this->query($sql);
|
|
$row=$this->fetchObject($res);
|
|
if ($row->ftype=="varchar") {
|
|
$size=$row->size-4;
|
|
} else {
|
|
$size=$row->size;
|
|
}
|
|
$this->freeResult( $res );
|
|
return $size;
|
|
}
|
|
|
|
function limitResult($sql, $limit, $offset=false) {
|
|
return "$sql LIMIT $limit ".(is_numeric($offset)?" OFFSET {$offset} ":"");
|
|
}
|
|
|
|
function wasDeadlock() {
|
|
return $this->lastErrno() == '40P01';
|
|
}
|
|
|
|
function duplicateTableStructure( $oldName, $newName, $temporary = false, $fname = 'DatabasePostgres::duplicateTableStructure' ) {
|
|
return $this->query( 'CREATE ' . ( $temporary ? 'TEMPORARY ' : '' ) . " TABLE $newName (LIKE $oldName INCLUDING DEFAULTS)", $fname );
|
|
}
|
|
|
|
function timestamp( $ts=0 ) {
|
|
return wfTimestamp(TS_POSTGRES,$ts);
|
|
}
|
|
|
|
/**
|
|
* Return aggregated value function call
|
|
*/
|
|
function aggregateValue ($valuedata,$valuename='value') {
|
|
return $valuedata;
|
|
}
|
|
|
|
|
|
function reportQueryError( $error, $errno, $sql, $fname, $tempIgnore = false ) {
|
|
// Ignore errors during error handling to avoid infinite recursion
|
|
$ignore = $this->ignoreErrors( true );
|
|
$this->mErrorCount++;
|
|
|
|
if ($ignore || $tempIgnore) {
|
|
wfDebug("SQL ERROR (ignored): $error\n");
|
|
$this->ignoreErrors( $ignore );
|
|
}
|
|
else {
|
|
$message = "A database error has occurred\n" .
|
|
"Query: $sql\n" .
|
|
"Function: $fname\n" .
|
|
"Error: $errno $error\n";
|
|
throw new DBUnexpectedError($this, $message);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return string wikitext of a link to the server software's web site
|
|
*/
|
|
function getSoftwareLink() {
|
|
return "[http://www.postgresql.org/ PostgreSQL]";
|
|
}
|
|
|
|
/**
|
|
* @return string Version information from the database
|
|
*/
|
|
function getServerVersion() {
|
|
$versionInfo = pg_version( $this->mConn );
|
|
if ( version_compare( $versionInfo['client'], '7.4.0', 'lt' ) ) {
|
|
// Old client, abort install
|
|
$this->numeric_version = '7.3 or earlier';
|
|
} elseif ( isset( $versionInfo['server'] ) ) {
|
|
// Normal client
|
|
$this->numeric_version = $versionInfo['server'];
|
|
} else {
|
|
// Bug 16937: broken pgsql extension from PHP<5.3
|
|
$this->numeric_version = pg_parameter_status( $this->mConn, 'server_version' );
|
|
}
|
|
return $this->numeric_version;
|
|
}
|
|
|
|
/**
|
|
* Query whether a given relation exists (in the given schema, or the
|
|
* default mw one if not given)
|
|
*/
|
|
function relationExists( $table, $types, $schema = false ) {
|
|
global $wgDBmwschema;
|
|
if ( !is_array( $types ) )
|
|
$types = array( $types );
|
|
if ( !$schema )
|
|
$schema = $wgDBmwschema;
|
|
$etable = $this->addQuotes( $table );
|
|
$eschema = $this->addQuotes( $schema );
|
|
$SQL = "SELECT 1 FROM pg_catalog.pg_class c, pg_catalog.pg_namespace n "
|
|
. "WHERE c.relnamespace = n.oid AND c.relname = $etable AND n.nspname = $eschema "
|
|
. "AND c.relkind IN ('" . implode("','", $types) . "')";
|
|
$res = $this->query( $SQL );
|
|
$count = $res ? $res->numRows() : 0;
|
|
if ($res)
|
|
$this->freeResult( $res );
|
|
return $count ? true : false;
|
|
}
|
|
|
|
/*
|
|
* For backward compatibility, this function checks both tables and
|
|
* views.
|
|
*/
|
|
function tableExists( $table, $schema = false ) {
|
|
return $this->relationExists( $table, array( 'r', 'v' ), $schema );
|
|
}
|
|
|
|
function sequenceExists( $sequence, $schema = false ) {
|
|
return $this->relationExists( $sequence, 'S', $schema );
|
|
}
|
|
|
|
function triggerExists( $table, $trigger ) {
|
|
global $wgDBmwschema;
|
|
|
|
$q = <<<SQL
|
|
SELECT 1 FROM pg_class, pg_namespace, pg_trigger
|
|
WHERE relnamespace=pg_namespace.oid AND relkind='r'
|
|
AND tgrelid=pg_class.oid
|
|
AND nspname=%s AND relname=%s AND tgname=%s
|
|
SQL;
|
|
$res = $this->query(sprintf($q,
|
|
$this->addQuotes($wgDBmwschema),
|
|
$this->addQuotes($table),
|
|
$this->addQuotes($trigger)));
|
|
if (!$res)
|
|
return null;
|
|
$rows = $res->numRows();
|
|
$this->freeResult( $res );
|
|
return $rows;
|
|
}
|
|
|
|
function ruleExists( $table, $rule ) {
|
|
global $wgDBmwschema;
|
|
$exists = $this->selectField("pg_rules", "rulename",
|
|
array( "rulename" => $rule,
|
|
"tablename" => $table,
|
|
"schemaname" => $wgDBmwschema ) );
|
|
return $exists === $rule;
|
|
}
|
|
|
|
function constraintExists( $table, $constraint ) {
|
|
global $wgDBmwschema;
|
|
$SQL = sprintf("SELECT 1 FROM information_schema.table_constraints ".
|
|
"WHERE constraint_schema = %s AND table_name = %s AND constraint_name = %s",
|
|
$this->addQuotes($wgDBmwschema),
|
|
$this->addQuotes($table),
|
|
$this->addQuotes($constraint));
|
|
$res = $this->query($SQL);
|
|
if (!$res)
|
|
return null;
|
|
$rows = $res->numRows();
|
|
$this->freeResult($res);
|
|
return $rows;
|
|
}
|
|
|
|
/**
|
|
* Query whether a given schema exists. Returns the name of the owner
|
|
*/
|
|
function schemaExists( $schema ) {
|
|
$eschema = preg_replace("/'/", "''", $schema);
|
|
$SQL = "SELECT rolname FROM pg_catalog.pg_namespace n, pg_catalog.pg_roles r "
|
|
."WHERE n.nspowner=r.oid AND n.nspname = '$eschema'";
|
|
$res = $this->query( $SQL );
|
|
if ( $res && $res->numRows() ) {
|
|
$row = $res->fetchObject();
|
|
$owner = $row->rolname;
|
|
} else {
|
|
$owner = false;
|
|
}
|
|
if ($res)
|
|
$this->freeResult($res);
|
|
return $owner;
|
|
}
|
|
|
|
function fieldInfo( $table, $field ) {
|
|
return PostgresField::fromText($this, $table, $field);
|
|
}
|
|
|
|
/**
|
|
* pg_field_type() wrapper
|
|
*/
|
|
function fieldType( $res, $index ) {
|
|
if ( $res instanceof ResultWrapper ) {
|
|
$res = $res->result;
|
|
}
|
|
return pg_field_type( $res, $index );
|
|
}
|
|
|
|
function begin( $fname = 'DatabasePostgres::begin' ) {
|
|
$this->query( 'BEGIN', $fname );
|
|
$this->mTrxLevel = 1;
|
|
}
|
|
|
|
function commit( $fname = 'DatabasePostgres::commit' ) {
|
|
$this->query( 'COMMIT', $fname );
|
|
$this->mTrxLevel = 0;
|
|
}
|
|
|
|
/* Not even sure why this is used in the main codebase... */
|
|
function limitResultForUpdate( $sql, $num ) {
|
|
return $sql;
|
|
}
|
|
|
|
function setup_database() {
|
|
global $wgVersion, $wgDBmwschema, $wgDBts2schema, $wgDBport, $wgDBuser;
|
|
|
|
// Make sure that we can write to the correct schema
|
|
// If not, Postgres will happily and silently go to the next search_path item
|
|
$ctest = "mediawiki_test_table";
|
|
$safeschema = $this->quote_ident($wgDBmwschema);
|
|
if ($this->tableExists($ctest, $wgDBmwschema)) {
|
|
$this->doQuery("DROP TABLE $safeschema.$ctest");
|
|
}
|
|
$SQL = "CREATE TABLE $safeschema.$ctest(a int)";
|
|
$olde = error_reporting( 0 );
|
|
$res = $this->doQuery($SQL);
|
|
error_reporting( $olde );
|
|
if (!$res) {
|
|
print "<b>FAILED</b>. Make sure that the user \"" . htmlspecialchars( $wgDBuser ) .
|
|
"\" can write to the schema \"" . htmlspecialchars( $wgDBmwschema ) . "\"</li>\n";
|
|
dieout(""); # Will close the main list <ul> and finish the page.
|
|
}
|
|
$this->doQuery("DROP TABLE $safeschema.$ctest");
|
|
|
|
$res = $this->sourceFile( "../maintenance/postgres/tables.sql" );
|
|
if ($res === true) {
|
|
print " done.</li>\n";
|
|
} else {
|
|
print " <b>FAILED</b></li>\n";
|
|
dieout( htmlspecialchars( $res ) );
|
|
}
|
|
|
|
## Update version information
|
|
$mwv = $this->addQuotes($wgVersion);
|
|
$pgv = $this->addQuotes($this->getServerVersion());
|
|
$pgu = $this->addQuotes($this->mUser);
|
|
$mws = $this->addQuotes($wgDBmwschema);
|
|
$tss = $this->addQuotes($wgDBts2schema);
|
|
$pgp = $this->addQuotes($wgDBport);
|
|
$dbn = $this->addQuotes($this->mDBname);
|
|
$ctype = $this->addQuotes( pg_fetch_result($this->doQuery("SHOW lc_ctype"),0,0) );
|
|
|
|
echo "<li>Populating interwiki table... ";
|
|
## Avoid the non-standard "REPLACE INTO" syntax
|
|
$f = fopen( "../maintenance/interwiki.sql", 'r' );
|
|
if ( !$f ) {
|
|
print "<b>FAILED</b></li>";
|
|
dieout( "Could not find the interwiki.sql file" );
|
|
}
|
|
## We simply assume it is already empty as we have just created it
|
|
$SQL = "INSERT INTO interwiki(iw_prefix,iw_url,iw_local) VALUES ";
|
|
while ( ! feof( $f ) ) {
|
|
$line = fgets($f,1024);
|
|
$matches = array();
|
|
if (!preg_match('/^\s*(\(.+?),(\d)\)/', $line, $matches)) {
|
|
continue;
|
|
}
|
|
$this->query("$SQL $matches[1],$matches[2])");
|
|
}
|
|
print " successfully populated.</li>\n";
|
|
|
|
$this->doQuery("COMMIT");
|
|
}
|
|
|
|
function encodeBlob( $b ) {
|
|
return new Blob ( pg_escape_bytea( $b ) ) ;
|
|
}
|
|
|
|
function decodeBlob( $b ) {
|
|
if ($b instanceof Blob) {
|
|
$b = $b->fetch();
|
|
}
|
|
return pg_unescape_bytea( $b );
|
|
}
|
|
|
|
function strencode( $s ) { ## Should not be called by us
|
|
return pg_escape_string( $s );
|
|
}
|
|
|
|
function addQuotes( $s ) {
|
|
if ( is_null( $s ) ) {
|
|
return 'NULL';
|
|
} else if ( is_bool( $s ) ) {
|
|
return intval( $s );
|
|
} else if ($s instanceof Blob) {
|
|
return "'".$s->fetch($s)."'";
|
|
}
|
|
return "'" . pg_escape_string($s) . "'";
|
|
}
|
|
|
|
function quote_ident( $s ) {
|
|
return '"' . preg_replace( '/"/', '""', $s) . '"';
|
|
}
|
|
|
|
/**
|
|
* Postgres specific version of replaceVars.
|
|
* Calls the parent version in Database.php
|
|
*
|
|
* @private
|
|
*
|
|
* @param $ins String: SQL string, read from a stream (usually tables.sql)
|
|
*
|
|
* @return string SQL string
|
|
*/
|
|
protected function replaceVars( $ins ) {
|
|
|
|
$ins = parent::replaceVars( $ins );
|
|
|
|
if ($this->numeric_version >= 8.3) {
|
|
// Thanks for not providing backwards-compatibility, 8.3
|
|
$ins = preg_replace( "/to_tsvector\s*\(\s*'default'\s*,/", 'to_tsvector(', $ins );
|
|
}
|
|
|
|
if ($this->numeric_version <= 8.1) { // Our minimum version
|
|
$ins = str_replace( 'USING gin', 'USING gist', $ins );
|
|
}
|
|
|
|
return $ins;
|
|
}
|
|
|
|
/**
|
|
* Various select options
|
|
*
|
|
* @private
|
|
*
|
|
* @param $options Array: an associative array of options to be turned into
|
|
* an SQL query, valid keys are listed in the function.
|
|
* @return array
|
|
*/
|
|
function makeSelectOptions( $options ) {
|
|
$preLimitTail = $postLimitTail = '';
|
|
$startOpts = $useIndex = '';
|
|
|
|
$noKeyOptions = array();
|
|
foreach ( $options as $key => $option ) {
|
|
if ( is_numeric( $key ) ) {
|
|
$noKeyOptions[$option] = true;
|
|
}
|
|
}
|
|
|
|
if ( isset( $options['GROUP BY'] ) ) $preLimitTail .= " GROUP BY " . $options['GROUP BY'];
|
|
if ( isset( $options['HAVING'] ) ) $preLimitTail .= " HAVING {$options['HAVING']}";
|
|
if ( isset( $options['ORDER BY'] ) ) $preLimitTail .= " ORDER BY " . $options['ORDER BY'];
|
|
|
|
//if (isset($options['LIMIT'])) {
|
|
// $tailOpts .= $this->limitResult('', $options['LIMIT'],
|
|
// isset($options['OFFSET']) ? $options['OFFSET']
|
|
// : false);
|
|
//}
|
|
|
|
if ( isset( $noKeyOptions['FOR UPDATE'] ) ) $postLimitTail .= ' FOR UPDATE';
|
|
if ( isset( $noKeyOptions['LOCK IN SHARE MODE'] ) ) $postLimitTail .= ' LOCK IN SHARE MODE';
|
|
if ( isset( $noKeyOptions['DISTINCT'] ) || isset( $noKeyOptions['DISTINCTROW'] ) ) $startOpts .= 'DISTINCT';
|
|
|
|
return array( $startOpts, $useIndex, $preLimitTail, $postLimitTail );
|
|
}
|
|
|
|
function setFakeMaster( $enabled = true ) {}
|
|
|
|
function getDBname() {
|
|
return $this->mDBname;
|
|
}
|
|
|
|
function getServer() {
|
|
return $this->mServer;
|
|
}
|
|
|
|
function buildConcat( $stringList ) {
|
|
return implode( ' || ', $stringList );
|
|
}
|
|
|
|
public function getSearchEngine() {
|
|
return "SearchPostgres";
|
|
}
|
|
} // end DatabasePostgres class
|