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Diffstat (limited to 'includes/db/DatabaseOracle.php')
| -rw-r--r-- | includes/db/DatabaseOracle.php | 1546 |
1 files changed, 0 insertions, 1546 deletions
diff --git a/includes/db/DatabaseOracle.php b/includes/db/DatabaseOracle.php deleted file mode 100644 index 87c31646..00000000 --- a/includes/db/DatabaseOracle.php +++ /dev/null @@ -1,1546 +0,0 @@ -<?php -/** - * This is the Oracle database abstraction layer. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * http://www.gnu.org/copyleft/gpl.html - * - * @file - * @ingroup Database - */ - -/** - * The oci8 extension is fairly weak and doesn't support oci_num_rows, among - * other things. We use a wrapper class to handle that and other - * Oracle-specific bits, like converting column names back to lowercase. - * @ingroup Database - */ -class ORAResult { - private $rows; - private $cursor; - private $nrows; - - private $columns = array(); - - private function array_unique_md( $array_in ) { - $array_out = array(); - $array_hashes = array(); - - foreach ( $array_in as $item ) { - $hash = md5( serialize( $item ) ); - if ( !isset( $array_hashes[$hash] ) ) { - $array_hashes[$hash] = $hash; - $array_out[] = $item; - } - } - - return $array_out; - } - - /** - * @param DatabaseBase $db - * @param resource $stmt A valid OCI statement identifier - * @param bool $unique - */ - function __construct( &$db, $stmt, $unique = false ) { - $this->db =& $db; - - $this->nrows = oci_fetch_all( $stmt, $this->rows, 0, -1, OCI_FETCHSTATEMENT_BY_ROW | OCI_NUM ); - if ( $this->nrows === false ) { - $e = oci_error( $stmt ); - $db->reportQueryError( $e['message'], $e['code'], '', __METHOD__ ); - $this->free(); - - return; - } - - if ( $unique ) { - $this->rows = $this->array_unique_md( $this->rows ); - $this->nrows = count( $this->rows ); - } - - if ( $this->nrows > 0 ) { - foreach ( $this->rows[0] as $k => $v ) { - $this->columns[$k] = strtolower( oci_field_name( $stmt, $k + 1 ) ); - } - } - - $this->cursor = 0; - oci_free_statement( $stmt ); - } - - public function free() { - unset( $this->db ); - } - - public function seek( $row ) { - $this->cursor = min( $row, $this->nrows ); - } - - public function numRows() { - return $this->nrows; - } - - public function numFields() { - return count( $this->columns ); - } - - public function fetchObject() { - if ( $this->cursor >= $this->nrows ) { - return false; - } - $row = $this->rows[$this->cursor++]; - $ret = new stdClass(); - foreach ( $row as $k => $v ) { - $lc = $this->columns[$k]; - $ret->$lc = $v; - } - - return $ret; - } - - public function fetchRow() { - if ( $this->cursor >= $this->nrows ) { - return false; - } - - $row = $this->rows[$this->cursor++]; - $ret = array(); - foreach ( $row as $k => $v ) { - $lc = $this->columns[$k]; - $ret[$lc] = $v; - $ret[$k] = $v; - } - - return $ret; - } -} - -/** - * Utility class. - * @ingroup Database - */ -class ORAField implements Field { - private $name, $tablename, $default, $max_length, $nullable, - $is_pk, $is_unique, $is_multiple, $is_key, $type; - - function __construct( $info ) { - $this->name = $info['column_name']; - $this->tablename = $info['table_name']; - $this->default = $info['data_default']; - $this->max_length = $info['data_length']; - $this->nullable = $info['not_null']; - $this->is_pk = isset( $info['prim'] ) && $info['prim'] == 1 ? 1 : 0; - $this->is_unique = isset( $info['uniq'] ) && $info['uniq'] == 1 ? 1 : 0; - $this->is_multiple = isset( $info['nonuniq'] ) && $info['nonuniq'] == 1 ? 1 : 0; - $this->is_key = ( $this->is_pk || $this->is_unique || $this->is_multiple ); - $this->type = $info['data_type']; - } - - function name() { - return $this->name; - } - - function tableName() { - return $this->tablename; - } - - function defaultValue() { - return $this->default; - } - - function maxLength() { - return $this->max_length; - } - - function isNullable() { - return $this->nullable; - } - - function isKey() { - return $this->is_key; - } - - function isMultipleKey() { - return $this->is_multiple; - } - - function type() { - return $this->type; - } -} - -/** - * @ingroup Database - */ -class DatabaseOracle extends DatabaseBase { - /** @var resource */ - protected $mLastResult = null; - - /** @var int The number of rows affected as an integer */ - protected $mAffectedRows; - - /** @var int */ - private $mInsertId = null; - - /** @var bool */ - private $ignoreDupValOnIndex = false; - - /** @var bool|array */ - private $sequenceData = null; - - /** @var string Character set for Oracle database */ - private $defaultCharset = 'AL32UTF8'; - - /** @var array */ - private $mFieldInfoCache = array(); - - function __construct( array $p ) { - global $wgDBprefix; - - if ( $p['tablePrefix'] == 'get from global' ) { - $p['tablePrefix'] = $wgDBprefix; - } - $p['tablePrefix'] = strtoupper( $p['tablePrefix'] ); - parent::__construct( $p ); - Hooks::run( 'DatabaseOraclePostInit', array( $this ) ); - } - - function __destruct() { - if ( $this->mOpened ) { - MediaWiki\suppressWarnings(); - $this->close(); - MediaWiki\restoreWarnings(); - } - } - - function getType() { - return 'oracle'; - } - - function cascadingDeletes() { - return true; - } - - function cleanupTriggers() { - return true; - } - - function strictIPs() { - return true; - } - - function realTimestamps() { - return true; - } - - function implicitGroupby() { - return false; - } - - function implicitOrderby() { - return false; - } - - function searchableIPs() { - return true; - } - - /** - * Usually aborts on failure - * @param string $server - * @param string $user - * @param string $password - * @param string $dbName - * @throws DBConnectionError - * @return DatabaseBase|null - */ - function open( $server, $user, $password, $dbName ) { - global $wgDBOracleDRCP; - if ( !function_exists( 'oci_connect' ) ) { - throw new DBConnectionError( - $this, - "Oracle functions missing, have you compiled PHP with the --with-oci8 option?\n " . - "(Note: if you recently installed PHP, you may need to restart your webserver\n " . - "and database)\n" ); - } - - $this->close(); - $this->mUser = $user; - $this->mPassword = $password; - // changed internal variables functions - // mServer now holds the TNS endpoint - // mDBname is schema name if different from username - if ( !$server ) { - // backward compatibillity (server used to be null and TNS was supplied in dbname) - $this->mServer = $dbName; - $this->mDBname = $user; - } else { - $this->mServer = $server; - if ( !$dbName ) { - $this->mDBname = $user; - } else { - $this->mDBname = $dbName; - } - } - - if ( !strlen( $user ) ) { # e.g. the class is being loaded - return null; - } - - if ( $wgDBOracleDRCP ) { - $this->setFlag( DBO_PERSISTENT ); - } - - $session_mode = $this->mFlags & DBO_SYSDBA ? OCI_SYSDBA : OCI_DEFAULT; - - MediaWiki\suppressWarnings(); - if ( $this->mFlags & DBO_PERSISTENT ) { - $this->mConn = oci_pconnect( - $this->mUser, - $this->mPassword, - $this->mServer, - $this->defaultCharset, - $session_mode - ); - } elseif ( $this->mFlags & DBO_DEFAULT ) { - $this->mConn = oci_new_connect( - $this->mUser, - $this->mPassword, - $this->mServer, - $this->defaultCharset, - $session_mode - ); - } else { - $this->mConn = oci_connect( - $this->mUser, - $this->mPassword, - $this->mServer, - $this->defaultCharset, - $session_mode - ); - } - MediaWiki\restoreWarnings(); - - if ( $this->mUser != $this->mDBname ) { - //change current schema in session - $this->selectDB( $this->mDBname ); - } - - if ( !$this->mConn ) { - throw new DBConnectionError( $this, $this->lastError() ); - } - - $this->mOpened = true; - - # removed putenv calls because they interfere with the system globaly - $this->doQuery( 'ALTER SESSION SET NLS_TIMESTAMP_FORMAT=\'DD-MM-YYYY HH24:MI:SS.FF6\'' ); - $this->doQuery( 'ALTER SESSION SET NLS_TIMESTAMP_TZ_FORMAT=\'DD-MM-YYYY HH24:MI:SS.FF6\'' ); - $this->doQuery( 'ALTER SESSION SET NLS_NUMERIC_CHARACTERS=\'.,\'' ); - - return $this->mConn; - } - - /** - * Closes a database connection, if it is open - * Returns success, true if already closed - * @return bool - */ - protected function closeConnection() { - return oci_close( $this->mConn ); - } - - function execFlags() { - return $this->mTrxLevel ? OCI_NO_AUTO_COMMIT : OCI_COMMIT_ON_SUCCESS; - } - - protected function doQuery( $sql ) { - wfDebug( "SQL: [$sql]\n" ); - if ( !StringUtils::isUtf8( $sql ) ) { - throw new MWException( "SQL encoding is invalid\n$sql" ); - } - - // handle some oracle specifics - // remove AS column/table/subquery namings - if ( !$this->getFlag( DBO_DDLMODE ) ) { - $sql = preg_replace( '/ as /i', ' ', $sql ); - } - - // Oracle has issues with UNION clause if the statement includes LOB fields - // So we do a UNION ALL and then filter the results array with array_unique - $union_unique = ( preg_match( '/\/\* UNION_UNIQUE \*\/ /', $sql ) != 0 ); - // EXPLAIN syntax in Oracle is EXPLAIN PLAN FOR and it return nothing - // you have to select data from plan table after explain - $explain_id = MWTimestamp::getLocalInstance()->format( 'dmYHis' ); - - $sql = preg_replace( - '/^EXPLAIN /', - 'EXPLAIN PLAN SET STATEMENT_ID = \'' . $explain_id . '\' FOR', - $sql, - 1, - $explain_count - ); - - MediaWiki\suppressWarnings(); - - if ( ( $this->mLastResult = $stmt = oci_parse( $this->mConn, $sql ) ) === false ) { - $e = oci_error( $this->mConn ); - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - - return false; - } - - if ( !oci_execute( $stmt, $this->execFlags() ) ) { - $e = oci_error( $stmt ); - if ( !$this->ignoreDupValOnIndex || $e['code'] != '1' ) { - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - - return false; - } - } - - MediaWiki\restoreWarnings(); - - if ( $explain_count > 0 ) { - return $this->doQuery( 'SELECT id, cardinality "ROWS" FROM plan_table ' . - 'WHERE statement_id = \'' . $explain_id . '\'' ); - } elseif ( oci_statement_type( $stmt ) == 'SELECT' ) { - return new ORAResult( $this, $stmt, $union_unique ); - } else { - $this->mAffectedRows = oci_num_rows( $stmt ); - - return true; - } - } - - function queryIgnore( $sql, $fname = '' ) { - return $this->query( $sql, $fname, true ); - } - - /** - * Frees resources associated with the LOB descriptor - * @param ResultWrapper|resource $res - */ - function freeResult( $res ) { - if ( $res instanceof ResultWrapper ) { - $res = $res->result; - } - - $res->free(); - } - - /** - * @param ResultWrapper|stdClass $res - * @return mixed - */ - function fetchObject( $res ) { - if ( $res instanceof ResultWrapper ) { - $res = $res->result; - } - - return $res->fetchObject(); - } - - function fetchRow( $res ) { - if ( $res instanceof ResultWrapper ) { - $res = $res->result; - } - - return $res->fetchRow(); - } - - function numRows( $res ) { - if ( $res instanceof ResultWrapper ) { - $res = $res->result; - } - - return $res->numRows(); - } - - function numFields( $res ) { - if ( $res instanceof ResultWrapper ) { - $res = $res->result; - } - - return $res->numFields(); - } - - function fieldName( $stmt, $n ) { - return oci_field_name( $stmt, $n ); - } - - /** - * This must be called after nextSequenceVal - * @return null|int - */ - function insertId() { - return $this->mInsertId; - } - - /** - * @param mixed $res - * @param int $row - */ - function dataSeek( $res, $row ) { - if ( $res instanceof ORAResult ) { - $res->seek( $row ); - } else { - $res->result->seek( $row ); - } - } - - function lastError() { - if ( $this->mConn === false ) { - $e = oci_error(); - } else { - $e = oci_error( $this->mConn ); - } - - return $e['message']; - } - - function lastErrno() { - if ( $this->mConn === false ) { - $e = oci_error(); - } else { - $e = oci_error( $this->mConn ); - } - - return $e['code']; - } - - function affectedRows() { - return $this->mAffectedRows; - } - - /** - * Returns information about an index - * If errors are explicitly ignored, returns NULL on failure - * @param string $table - * @param string $index - * @param string $fname - * @return bool - */ - function indexInfo( $table, $index, $fname = __METHOD__ ) { - return false; - } - - function indexUnique( $table, $index, $fname = __METHOD__ ) { - return false; - } - - function insert( $table, $a, $fname = __METHOD__, $options = array() ) { - if ( !count( $a ) ) { - return true; - } - - if ( !is_array( $options ) ) { - $options = array( $options ); - } - - if ( in_array( 'IGNORE', $options ) ) { - $this->ignoreDupValOnIndex = true; - } - - if ( !is_array( reset( $a ) ) ) { - $a = array( $a ); - } - - foreach ( $a as &$row ) { - $this->insertOneRow( $table, $row, $fname ); - } - $retVal = true; - - if ( in_array( 'IGNORE', $options ) ) { - $this->ignoreDupValOnIndex = false; - } - - return $retVal; - } - - private function fieldBindStatement( $table, $col, &$val, $includeCol = false ) { - $col_info = $this->fieldInfoMulti( $table, $col ); - $col_type = $col_info != false ? $col_info->type() : 'CONSTANT'; - - $bind = ''; - if ( is_numeric( $col ) ) { - $bind = $val; - $val = null; - - return $bind; - } elseif ( $includeCol ) { - $bind = "$col = "; - } - - if ( $val == '' && $val !== 0 && $col_type != 'BLOB' && $col_type != 'CLOB' ) { - $val = null; - } - - if ( $val === 'NULL' ) { - $val = null; - } - - if ( $val === null ) { - if ( $col_info != false && $col_info->isNullable() == 0 && $col_info->defaultValue() != null ) { - $bind .= 'DEFAULT'; - } else { - $bind .= 'NULL'; - } - } else { - $bind .= ':' . $col; - } - - return $bind; - } - - /** - * @param string $table - * @param array $row - * @param string $fname - * @return bool - * @throws DBUnexpectedError - */ - private function insertOneRow( $table, $row, $fname ) { - global $wgContLang; - - $table = $this->tableName( $table ); - // "INSERT INTO tables (a, b, c)" - $sql = "INSERT INTO " . $table . " (" . join( ',', array_keys( $row ) ) . ')'; - $sql .= " VALUES ("; - - // for each value, append ":key" - $first = true; - foreach ( $row as $col => &$val ) { - if ( !$first ) { - $sql .= ', '; - } else { - $first = false; - } - if ( $this->isQuotedIdentifier( $val ) ) { - $sql .= $this->removeIdentifierQuotes( $val ); - unset( $row[$col] ); - } else { - $sql .= $this->fieldBindStatement( $table, $col, $val ); - } - } - $sql .= ')'; - - if ( ( $this->mLastResult = $stmt = oci_parse( $this->mConn, $sql ) ) === false ) { - $e = oci_error( $this->mConn ); - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - - return false; - } - foreach ( $row as $col => &$val ) { - $col_info = $this->fieldInfoMulti( $table, $col ); - $col_type = $col_info != false ? $col_info->type() : 'CONSTANT'; - - if ( $val === null ) { - // do nothing ... null was inserted in statement creation - } elseif ( $col_type != 'BLOB' && $col_type != 'CLOB' ) { - if ( is_object( $val ) ) { - $val = $val->fetch(); - } - - // backward compatibility - if ( preg_match( '/^timestamp.*/i', $col_type ) == 1 && strtolower( $val ) == 'infinity' ) { - $val = $this->getInfinity(); - } - - $val = ( $wgContLang != null ) ? $wgContLang->checkTitleEncoding( $val ) : $val; - if ( oci_bind_by_name( $stmt, ":$col", $val, -1, SQLT_CHR ) === false ) { - $e = oci_error( $stmt ); - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - - return false; - } - } else { - /** @var OCI_Lob[] $lob */ - if ( ( $lob[$col] = oci_new_descriptor( $this->mConn, OCI_D_LOB ) ) === false ) { - $e = oci_error( $stmt ); - throw new DBUnexpectedError( $this, "Cannot create LOB descriptor: " . $e['message'] ); - } - - if ( is_object( $val ) ) { - $val = $val->fetch(); - } - - if ( $col_type == 'BLOB' ) { - $lob[$col]->writeTemporary( $val, OCI_TEMP_BLOB ); - oci_bind_by_name( $stmt, ":$col", $lob[$col], -1, OCI_B_BLOB ); - } else { - $lob[$col]->writeTemporary( $val, OCI_TEMP_CLOB ); - oci_bind_by_name( $stmt, ":$col", $lob[$col], -1, OCI_B_CLOB ); - } - } - } - - MediaWiki\suppressWarnings(); - - if ( oci_execute( $stmt, $this->execFlags() ) === false ) { - $e = oci_error( $stmt ); - if ( !$this->ignoreDupValOnIndex || $e['code'] != '1' ) { - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - - return false; - } else { - $this->mAffectedRows = oci_num_rows( $stmt ); - } - } else { - $this->mAffectedRows = oci_num_rows( $stmt ); - } - - MediaWiki\restoreWarnings(); - - if ( isset( $lob ) ) { - foreach ( $lob as $lob_v ) { - $lob_v->free(); - } - } - - if ( !$this->mTrxLevel ) { - oci_commit( $this->mConn ); - } - - return oci_free_statement( $stmt ); - } - - function insertSelect( $destTable, $srcTable, $varMap, $conds, $fname = __METHOD__, - $insertOptions = array(), $selectOptions = array() - ) { - $destTable = $this->tableName( $destTable ); - 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 ( ( $sequenceData = $this->getSequenceData( $destTable ) ) !== false && - !isset( $varMap[$sequenceData['column']] ) - ) { - $varMap[$sequenceData['column']] = 'GET_SEQUENCE_VALUE(\'' . $sequenceData['sequence'] . '\')'; - } - - // count-alias subselect fields to avoid abigious definition errors - $i = 0; - foreach ( $varMap as &$val ) { - $val = $val . ' field' . ( $i++ ); - } - - $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"; - - if ( in_array( 'IGNORE', $insertOptions ) ) { - $this->ignoreDupValOnIndex = true; - } - - $retval = $this->query( $sql, $fname ); - - if ( in_array( 'IGNORE', $insertOptions ) ) { - $this->ignoreDupValOnIndex = false; - } - - return $retval; - } - - public function upsert( $table, array $rows, array $uniqueIndexes, array $set, - $fname = __METHOD__ - ) { - if ( !count( $rows ) ) { - return true; // nothing to do - } - - if ( !is_array( reset( $rows ) ) ) { - $rows = array( $rows ); - } - - $sequenceData = $this->getSequenceData( $table ); - if ( $sequenceData !== false ) { - // add sequence column to each list of columns, when not set - foreach ( $rows as &$row ) { - if ( !isset( $row[$sequenceData['column']] ) ) { - $row[$sequenceData['column']] = - $this->addIdentifierQuotes( 'GET_SEQUENCE_VALUE(\'' . - $sequenceData['sequence'] . '\')' ); - } - } - } - - return parent::upsert( $table, $rows, $uniqueIndexes, $set, $fname ); - } - - function tableName( $name, $format = 'quoted' ) { - /* - Replace reserved words with better ones - Using uppercase because that's the only way Oracle can handle - quoted tablenames - */ - switch ( $name ) { - case 'user': - $name = 'MWUSER'; - break; - case 'text': - $name = 'PAGECONTENT'; - break; - } - - return strtoupper( parent::tableName( $name, $format ) ); - } - - function tableNameInternal( $name ) { - $name = $this->tableName( $name ); - - return preg_replace( '/.*\.(.*)/', '$1', $name ); - } - - /** - * Return the next in a sequence, save the value for retrieval via insertId() - * - * @param string $seqName - * @return null|int - */ - function nextSequenceValue( $seqName ) { - $res = $this->query( "SELECT $seqName.nextval FROM dual" ); - $row = $this->fetchRow( $res ); - $this->mInsertId = $row[0]; - - return $this->mInsertId; - } - - /** - * Return sequence_name if table has a sequence - * - * @param string $table - * @return bool - */ - private function getSequenceData( $table ) { - if ( $this->sequenceData == null ) { - $result = $this->doQuery( "SELECT lower(asq.sequence_name), - lower(atc.table_name), - lower(atc.column_name) - FROM all_sequences asq, all_tab_columns atc - WHERE decode( - atc.table_name, - '{$this->mTablePrefix}MWUSER', - '{$this->mTablePrefix}USER', - atc.table_name - ) || '_' || - atc.column_name || '_SEQ' = '{$this->mTablePrefix}' || asq.sequence_name - AND asq.sequence_owner = upper('{$this->mDBname}') - AND atc.owner = upper('{$this->mDBname}')" ); - - while ( ( $row = $result->fetchRow() ) !== false ) { - $this->sequenceData[$row[1]] = array( - 'sequence' => $row[0], - 'column' => $row[2] - ); - } - } - $table = strtolower( $this->removeIdentifierQuotes( $this->tableName( $table ) ) ); - - return ( isset( $this->sequenceData[$table] ) ) ? $this->sequenceData[$table] : false; - } - - /** - * Returns the size of a text field, or -1 for "unlimited" - * - * @param string $table - * @param string $field - * @return mixed - */ - function textFieldSize( $table, $field ) { - $fieldInfoData = $this->fieldInfo( $table, $field ); - - return $fieldInfoData->maxLength(); - } - - function limitResult( $sql, $limit, $offset = false ) { - if ( $offset === false ) { - $offset = 0; - } - - return "SELECT * FROM ($sql) WHERE rownum >= (1 + $offset) AND rownum < (1 + $limit + $offset)"; - } - - function encodeBlob( $b ) { - return new Blob( $b ); - } - - function decodeBlob( $b ) { - if ( $b instanceof Blob ) { - $b = $b->fetch(); - } - - return $b; - } - - function unionQueries( $sqls, $all ) { - $glue = ' UNION ALL '; - - return 'SELECT * ' . ( $all ? '' : '/* UNION_UNIQUE */ ' ) . - 'FROM (' . implode( $glue, $sqls ) . ')'; - } - - function wasDeadlock() { - return $this->lastErrno() == 'OCI-00060'; - } - - function duplicateTableStructure( $oldName, $newName, $temporary = false, - $fname = __METHOD__ - ) { - $temporary = $temporary ? 'TRUE' : 'FALSE'; - - $newName = strtoupper( $newName ); - $oldName = strtoupper( $oldName ); - - $tabName = substr( $newName, strlen( $this->mTablePrefix ) ); - $oldPrefix = substr( $oldName, 0, strlen( $oldName ) - strlen( $tabName ) ); - $newPrefix = strtoupper( $this->mTablePrefix ); - - return $this->doQuery( "BEGIN DUPLICATE_TABLE( '$tabName', " . - "'$oldPrefix', '$newPrefix', $temporary ); END;" ); - } - - function listTables( $prefix = null, $fname = __METHOD__ ) { - $listWhere = ''; - if ( !empty( $prefix ) ) { - $listWhere = ' AND table_name LIKE \'' . strtoupper( $prefix ) . '%\''; - } - - $owner = strtoupper( $this->mDBname ); - $result = $this->doQuery( "SELECT table_name FROM all_tables " . - "WHERE owner='$owner' AND table_name NOT LIKE '%!_IDX\$_' ESCAPE '!' $listWhere" ); - - // dirty code ... i know - $endArray = array(); - $endArray[] = strtoupper( $prefix . 'MWUSER' ); - $endArray[] = strtoupper( $prefix . 'PAGE' ); - $endArray[] = strtoupper( $prefix . 'IMAGE' ); - $fixedOrderTabs = $endArray; - while ( ( $row = $result->fetchRow() ) !== false ) { - if ( !in_array( $row['table_name'], $fixedOrderTabs ) ) { - $endArray[] = $row['table_name']; - } - } - - return $endArray; - } - - public function dropTable( $tableName, $fName = __METHOD__ ) { - $tableName = $this->tableName( $tableName ); - if ( !$this->tableExists( $tableName ) ) { - return false; - } - - return $this->doQuery( "DROP TABLE $tableName CASCADE CONSTRAINTS PURGE" ); - } - - function timestamp( $ts = 0 ) { - return wfTimestamp( TS_ORACLE, $ts ); - } - - /** - * Return aggregated value function call - * - * @param array $valuedata - * @param string $valuename - * @return mixed - */ - public function aggregateValue( $valuedata, $valuename = 'value' ) { - return $valuedata; - } - - /** - * @return string Wikitext of a link to the server software's web site - */ - public function getSoftwareLink() { - return '[{{int:version-db-oracle-url}} Oracle]'; - } - - /** - * @return string Version information from the database - */ - function getServerVersion() { - //better version number, fallback on driver - $rset = $this->doQuery( - 'SELECT version FROM product_component_version ' . - 'WHERE UPPER(product) LIKE \'ORACLE DATABASE%\'' - ); - if ( !( $row = $rset->fetchRow() ) ) { - return oci_server_version( $this->mConn ); - } - - return $row['version']; - } - - /** - * Query whether a given index exists - * @param string $table - * @param string $index - * @param string $fname - * @return bool - */ - function indexExists( $table, $index, $fname = __METHOD__ ) { - $table = $this->tableName( $table ); - $table = strtoupper( $this->removeIdentifierQuotes( $table ) ); - $index = strtoupper( $index ); - $owner = strtoupper( $this->mDBname ); - $sql = "SELECT 1 FROM all_indexes WHERE owner='$owner' AND index_name='{$table}_{$index}'"; - $res = $this->doQuery( $sql ); - if ( $res ) { - $count = $res->numRows(); - $res->free(); - } else { - $count = 0; - } - - return $count != 0; - } - - /** - * Query whether a given table exists (in the given schema, or the default mw one if not given) - * @param string $table - * @param string $fname - * @return bool - */ - function tableExists( $table, $fname = __METHOD__ ) { - $table = $this->tableName( $table ); - $table = $this->addQuotes( strtoupper( $this->removeIdentifierQuotes( $table ) ) ); - $owner = $this->addQuotes( strtoupper( $this->mDBname ) ); - $sql = "SELECT 1 FROM all_tables WHERE owner=$owner AND table_name=$table"; - $res = $this->doQuery( $sql ); - if ( $res && $res->numRows() > 0 ) { - $exists = true; - } else { - $exists = false; - } - - $res->free(); - - return $exists; - } - - /** - * Function translates mysql_fetch_field() functionality on ORACLE. - * Caching is present for reducing query time. - * For internal calls. Use fieldInfo for normal usage. - * Returns false if the field doesn't exist - * - * @param array|string $table - * @param string $field - * @return ORAField|ORAResult - */ - private function fieldInfoMulti( $table, $field ) { - $field = strtoupper( $field ); - if ( is_array( $table ) ) { - $table = array_map( array( &$this, 'tableNameInternal' ), $table ); - $tableWhere = 'IN ('; - foreach ( $table as &$singleTable ) { - $singleTable = $this->removeIdentifierQuotes( $singleTable ); - if ( isset( $this->mFieldInfoCache["$singleTable.$field"] ) ) { - return $this->mFieldInfoCache["$singleTable.$field"]; - } - $tableWhere .= '\'' . $singleTable . '\','; - } - $tableWhere = rtrim( $tableWhere, ',' ) . ')'; - } else { - $table = $this->removeIdentifierQuotes( $this->tableNameInternal( $table ) ); - if ( isset( $this->mFieldInfoCache["$table.$field"] ) ) { - return $this->mFieldInfoCache["$table.$field"]; - } - $tableWhere = '= \'' . $table . '\''; - } - - $fieldInfoStmt = oci_parse( - $this->mConn, - 'SELECT * FROM wiki_field_info_full WHERE table_name ' . - $tableWhere . ' and column_name = \'' . $field . '\'' - ); - if ( oci_execute( $fieldInfoStmt, $this->execFlags() ) === false ) { - $e = oci_error( $fieldInfoStmt ); - $this->reportQueryError( $e['message'], $e['code'], 'fieldInfo QUERY', __METHOD__ ); - - return false; - } - $res = new ORAResult( $this, $fieldInfoStmt ); - if ( $res->numRows() == 0 ) { - if ( is_array( $table ) ) { - foreach ( $table as &$singleTable ) { - $this->mFieldInfoCache["$singleTable.$field"] = false; - } - } else { - $this->mFieldInfoCache["$table.$field"] = false; - } - $fieldInfoTemp = null; - } else { - $fieldInfoTemp = new ORAField( $res->fetchRow() ); - $table = $fieldInfoTemp->tableName(); - $this->mFieldInfoCache["$table.$field"] = $fieldInfoTemp; - } - $res->free(); - - return $fieldInfoTemp; - } - - /** - * @throws DBUnexpectedError - * @param string $table - * @param string $field - * @return ORAField - */ - function fieldInfo( $table, $field ) { - if ( is_array( $table ) ) { - throw new DBUnexpectedError( $this, 'DatabaseOracle::fieldInfo called with table array!' ); - } - - return $this->fieldInfoMulti( $table, $field ); - } - - protected function doBegin( $fname = __METHOD__ ) { - $this->mTrxLevel = 1; - $this->doQuery( 'SET CONSTRAINTS ALL DEFERRED' ); - } - - protected function doCommit( $fname = __METHOD__ ) { - if ( $this->mTrxLevel ) { - $ret = oci_commit( $this->mConn ); - if ( !$ret ) { - throw new DBUnexpectedError( $this, $this->lastError() ); - } - $this->mTrxLevel = 0; - $this->doQuery( 'SET CONSTRAINTS ALL IMMEDIATE' ); - } - } - - protected function doRollback( $fname = __METHOD__ ) { - if ( $this->mTrxLevel ) { - oci_rollback( $this->mConn ); - $this->mTrxLevel = 0; - $this->doQuery( 'SET CONSTRAINTS ALL IMMEDIATE' ); - } - } - - /** - * defines must comply with ^define\s*([^\s=]*)\s*=\s?'\{\$([^\}]*)\}'; - * - * @param resource $fp - * @param bool|string $lineCallback - * @param bool|callable $resultCallback - * @param string $fname - * @param bool|callable $inputCallback - * @return bool|string - */ - function sourceStream( $fp, $lineCallback = false, $resultCallback = false, - $fname = __METHOD__, $inputCallback = false ) { - $cmd = ''; - $done = false; - $dollarquote = false; - - $replacements = array(); - - while ( !feof( $fp ) ) { - if ( $lineCallback ) { - call_user_func( $lineCallback ); - } - $line = trim( fgets( $fp, 1024 ) ); - $sl = strlen( $line ) - 1; - - if ( $sl < 0 ) { - continue; - } - if ( '-' == $line[0] && '-' == $line[1] ) { - continue; - } - - // Allow dollar quoting for function declarations - if ( substr( $line, 0, 8 ) == '/*$mw$*/' ) { - if ( $dollarquote ) { - $dollarquote = false; - $line = str_replace( '/*$mw$*/', '', $line ); // remove dollarquotes - $done = true; - } else { - $dollarquote = true; - } - } elseif ( !$dollarquote ) { - if ( ';' == $line[$sl] && ( $sl < 2 || ';' != $line[$sl - 1] ) ) { - $done = true; - $line = substr( $line, 0, $sl ); - } - } - - if ( $cmd != '' ) { - $cmd .= ' '; - } - $cmd .= "$line\n"; - - if ( $done ) { - $cmd = str_replace( ';;', ";", $cmd ); - if ( strtolower( substr( $cmd, 0, 6 ) ) == 'define' ) { - if ( preg_match( '/^define\s*([^\s=]*)\s*=\s*\'\{\$([^\}]*)\}\'/', $cmd, $defines ) ) { - $replacements[$defines[2]] = $defines[1]; - } - } else { - foreach ( $replacements as $mwVar => $scVar ) { - $cmd = str_replace( '&' . $scVar . '.', '`{$' . $mwVar . '}`', $cmd ); - } - - $cmd = $this->replaceVars( $cmd ); - if ( $inputCallback ) { - call_user_func( $inputCallback, $cmd ); - } - $res = $this->doQuery( $cmd ); - if ( $resultCallback ) { - call_user_func( $resultCallback, $res, $this ); - } - - if ( false === $res ) { - $err = $this->lastError(); - - return "Query \"{$cmd}\" failed with error code \"$err\".\n"; - } - } - - $cmd = ''; - $done = false; - } - } - - return true; - } - - function selectDB( $db ) { - $this->mDBname = $db; - if ( $db == null || $db == $this->mUser ) { - return true; - } - $sql = 'ALTER SESSION SET CURRENT_SCHEMA=' . strtoupper( $db ); - $stmt = oci_parse( $this->mConn, $sql ); - MediaWiki\suppressWarnings(); - $success = oci_execute( $stmt ); - MediaWiki\restoreWarnings(); - if ( !$success ) { - $e = oci_error( $stmt ); - if ( $e['code'] != '1435' ) { - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - } - - return false; - } - - return true; - } - - function strencode( $s ) { - return str_replace( "'", "''", $s ); - } - - function addQuotes( $s ) { - global $wgContLang; - if ( isset( $wgContLang->mLoaded ) && $wgContLang->mLoaded ) { - $s = $wgContLang->checkTitleEncoding( $s ); - } - - return "'" . $this->strencode( $s ) . "'"; - } - - public function addIdentifierQuotes( $s ) { - if ( !$this->getFlag( DBO_DDLMODE ) ) { - $s = '/*Q*/' . $s; - } - - return $s; - } - - public function removeIdentifierQuotes( $s ) { - return strpos( $s, '/*Q*/' ) === false ? $s : substr( $s, 5 ); - } - - public function isQuotedIdentifier( $s ) { - return strpos( $s, '/*Q*/' ) !== false; - } - - private function wrapFieldForWhere( $table, &$col, &$val ) { - global $wgContLang; - - $col_info = $this->fieldInfoMulti( $table, $col ); - $col_type = $col_info != false ? $col_info->type() : 'CONSTANT'; - if ( $col_type == 'CLOB' ) { - $col = 'TO_CHAR(' . $col . ')'; - $val = $wgContLang->checkTitleEncoding( $val ); - } elseif ( $col_type == 'VARCHAR2' ) { - $val = $wgContLang->checkTitleEncoding( $val ); - } - } - - private function wrapConditionsForWhere( $table, $conds, $parentCol = null ) { - $conds2 = array(); - foreach ( $conds as $col => $val ) { - if ( is_array( $val ) ) { - $conds2[$col] = $this->wrapConditionsForWhere( $table, $val, $col ); - } else { - if ( is_numeric( $col ) && $parentCol != null ) { - $this->wrapFieldForWhere( $table, $parentCol, $val ); - } else { - $this->wrapFieldForWhere( $table, $col, $val ); - } - $conds2[$col] = $val; - } - } - - return $conds2; - } - - function selectRow( $table, $vars, $conds, $fname = __METHOD__, - $options = array(), $join_conds = array() - ) { - if ( is_array( $conds ) ) { - $conds = $this->wrapConditionsForWhere( $table, $conds ); - } - - return parent::selectRow( $table, $vars, $conds, $fname, $options, $join_conds ); - } - - /** - * Returns an optional USE INDEX clause to go after the table, and a - * string to go at the end of the query - * - * @param array $options 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 = ''; - - $noKeyOptions = array(); - foreach ( $options as $key => $option ) { - if ( is_numeric( $key ) ) { - $noKeyOptions[$option] = true; - } - } - - $preLimitTail .= $this->makeGroupByWithHaving( $options ); - - $preLimitTail .= $this->makeOrderBy( $options ); - - if ( isset( $noKeyOptions['FOR UPDATE'] ) ) { - $postLimitTail .= ' FOR UPDATE'; - } - - if ( isset( $noKeyOptions['DISTINCT'] ) || isset( $noKeyOptions['DISTINCTROW'] ) ) { - $startOpts .= 'DISTINCT'; - } - - if ( isset( $options['USE INDEX'] ) && !is_array( $options['USE INDEX'] ) ) { - $useIndex = $this->useIndexClause( $options['USE INDEX'] ); - } else { - $useIndex = ''; - } - - return array( $startOpts, $useIndex, $preLimitTail, $postLimitTail ); - } - - public function delete( $table, $conds, $fname = __METHOD__ ) { - if ( is_array( $conds ) ) { - $conds = $this->wrapConditionsForWhere( $table, $conds ); - } - // a hack for deleting pages, users and images (which have non-nullable FKs) - // all deletions on these tables have transactions so final failure rollbacks these updates - $table = $this->tableName( $table ); - if ( $table == $this->tableName( 'user' ) ) { - $this->update( 'archive', array( 'ar_user' => 0 ), - array( 'ar_user' => $conds['user_id'] ), $fname ); - $this->update( 'ipblocks', array( 'ipb_user' => 0 ), - array( 'ipb_user' => $conds['user_id'] ), $fname ); - $this->update( 'image', array( 'img_user' => 0 ), - array( 'img_user' => $conds['user_id'] ), $fname ); - $this->update( 'oldimage', array( 'oi_user' => 0 ), - array( 'oi_user' => $conds['user_id'] ), $fname ); - $this->update( 'filearchive', array( 'fa_deleted_user' => 0 ), - array( 'fa_deleted_user' => $conds['user_id'] ), $fname ); - $this->update( 'filearchive', array( 'fa_user' => 0 ), - array( 'fa_user' => $conds['user_id'] ), $fname ); - $this->update( 'uploadstash', array( 'us_user' => 0 ), - array( 'us_user' => $conds['user_id'] ), $fname ); - $this->update( 'recentchanges', array( 'rc_user' => 0 ), - array( 'rc_user' => $conds['user_id'] ), $fname ); - $this->update( 'logging', array( 'log_user' => 0 ), - array( 'log_user' => $conds['user_id'] ), $fname ); - } elseif ( $table == $this->tableName( 'image' ) ) { - $this->update( 'oldimage', array( 'oi_name' => 0 ), - array( 'oi_name' => $conds['img_name'] ), $fname ); - } - - return parent::delete( $table, $conds, $fname ); - } - - /** - * @param string $table - * @param array $values - * @param array $conds - * @param string $fname - * @param array $options - * @return bool - * @throws DBUnexpectedError - */ - function update( $table, $values, $conds, $fname = __METHOD__, $options = array() ) { - global $wgContLang; - - $table = $this->tableName( $table ); - $opts = $this->makeUpdateOptions( $options ); - $sql = "UPDATE $opts $table SET "; - - $first = true; - foreach ( $values as $col => &$val ) { - $sqlSet = $this->fieldBindStatement( $table, $col, $val, true ); - - if ( !$first ) { - $sqlSet = ', ' . $sqlSet; - } else { - $first = false; - } - $sql .= $sqlSet; - } - - if ( $conds !== array() && $conds !== '*' ) { - $conds = $this->wrapConditionsForWhere( $table, $conds ); - $sql .= ' WHERE ' . $this->makeList( $conds, LIST_AND ); - } - - if ( ( $this->mLastResult = $stmt = oci_parse( $this->mConn, $sql ) ) === false ) { - $e = oci_error( $this->mConn ); - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - - return false; - } - foreach ( $values as $col => &$val ) { - $col_info = $this->fieldInfoMulti( $table, $col ); - $col_type = $col_info != false ? $col_info->type() : 'CONSTANT'; - - if ( $val === null ) { - // do nothing ... null was inserted in statement creation - } elseif ( $col_type != 'BLOB' && $col_type != 'CLOB' ) { - if ( is_object( $val ) ) { - $val = $val->getData(); - } - - if ( preg_match( '/^timestamp.*/i', $col_type ) == 1 && strtolower( $val ) == 'infinity' ) { - $val = '31-12-2030 12:00:00.000000'; - } - - $val = ( $wgContLang != null ) ? $wgContLang->checkTitleEncoding( $val ) : $val; - if ( oci_bind_by_name( $stmt, ":$col", $val ) === false ) { - $e = oci_error( $stmt ); - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - - return false; - } - } else { - /** @var OCI_Lob[] $lob */ - if ( ( $lob[$col] = oci_new_descriptor( $this->mConn, OCI_D_LOB ) ) === false ) { - $e = oci_error( $stmt ); - throw new DBUnexpectedError( $this, "Cannot create LOB descriptor: " . $e['message'] ); - } - - if ( is_object( $val ) ) { - $val = $val->getData(); - } - - if ( $col_type == 'BLOB' ) { - $lob[$col]->writeTemporary( $val ); - oci_bind_by_name( $stmt, ":$col", $lob[$col], -1, SQLT_BLOB ); - } else { - $lob[$col]->writeTemporary( $val ); - oci_bind_by_name( $stmt, ":$col", $lob[$col], -1, OCI_B_CLOB ); - } - } - } - - MediaWiki\suppressWarnings(); - - if ( oci_execute( $stmt, $this->execFlags() ) === false ) { - $e = oci_error( $stmt ); - if ( !$this->ignoreDupValOnIndex || $e['code'] != '1' ) { - $this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ ); - - return false; - } else { - $this->mAffectedRows = oci_num_rows( $stmt ); - } - } else { - $this->mAffectedRows = oci_num_rows( $stmt ); - } - - MediaWiki\restoreWarnings(); - - if ( isset( $lob ) ) { - foreach ( $lob as $lob_v ) { - $lob_v->free(); - } - } - - if ( !$this->mTrxLevel ) { - oci_commit( $this->mConn ); - } - - return oci_free_statement( $stmt ); - } - - function bitNot( $field ) { - // expecting bit-fields smaller than 4bytes - return 'BITNOT(' . $field . ')'; - } - - function bitAnd( $fieldLeft, $fieldRight ) { - return 'BITAND(' . $fieldLeft . ', ' . $fieldRight . ')'; - } - - function bitOr( $fieldLeft, $fieldRight ) { - return 'BITOR(' . $fieldLeft . ', ' . $fieldRight . ')'; - } - - function getDBname() { - return $this->mDBname; - } - - function getServer() { - return $this->mServer; - } - - public function buildGroupConcatField( - $delim, $table, $field, $conds = '', $join_conds = array() - ) { - $fld = "LISTAGG($field," . $this->addQuotes( $delim ) . ") WITHIN GROUP (ORDER BY $field)"; - - return '(' . $this->selectSQLText( $table, $fld, $conds, null, array(), $join_conds ) . ')'; - } - - public function getSearchEngine() { - return 'SearchOracle'; - } - - public function getInfinity() { - return '31-12-2030 12:00:00.000000'; - } -} |