%PDF-
%PDF-
Mini Shell
Mini Shell
<?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
*/
use MediaWiki\MediaWikiServices;
use Wikimedia\Rdbms\Database;
use Wikimedia\Rdbms\DatabaseDomain;
use Wikimedia\Rdbms\Blob;
use Wikimedia\Rdbms\ResultWrapper;
use Wikimedia\Rdbms\DBConnectionError;
use Wikimedia\Rdbms\DBUnexpectedError;
use Wikimedia\Rdbms\DBExpectedError;
/**
* @ingroup Database
*/
class DatabaseOracle extends Database {
/** @var resource */
protected $mLastResult = null;
/** @var int The number of rows affected as an integer */
protected $mAffectedRows;
/** @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 = [];
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', [ $this ] );
}
function __destruct() {
if ( $this->opened ) {
Wikimedia\suppressWarnings();
$this->close();
Wikimedia\restoreWarnings();
}
}
function getType() {
return 'oracle';
}
function implicitGroupby() {
return false;
}
function implicitOrderby() {
return false;
}
protected function open( $server, $user, $password, $dbName, $schema, $tablePrefix ) {
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->user = $user;
$this->password = $password;
if ( !$server ) {
// Backward compatibility (server used to be null and TNS was supplied in dbname)
$this->server = $dbName;
$realDatabase = $user;
} else {
// $server now holds the TNS endpoint
$this->server = $server;
// $dbName is schema name if different from username
$realDatabase = $dbName ?: $user;
}
if ( !strlen( $user ) ) { # e.g. the class is being loaded
return null;
}
if ( $wgDBOracleDRCP ) {
$this->setFlag( DBO_PERSISTENT );
}
$session_mode = $this->flags & DBO_SYSDBA ? OCI_SYSDBA : OCI_DEFAULT;
Wikimedia\suppressWarnings();
if ( $this->flags & DBO_PERSISTENT ) {
$this->conn = oci_pconnect(
$this->user,
$this->password,
$this->server,
$this->defaultCharset,
$session_mode
);
} elseif ( $this->flags & DBO_DEFAULT ) {
$this->conn = oci_new_connect(
$this->user,
$this->password,
$this->server,
$this->defaultCharset,
$session_mode
);
} else {
$this->conn = oci_connect(
$this->user,
$this->password,
$this->server,
$this->defaultCharset,
$session_mode
);
}
Wikimedia\restoreWarnings();
if ( $this->user != $realDatabase ) {
// change current schema in session
$this->selectDB( $realDatabase );
} else {
$this->currentDomain = new DatabaseDomain(
$realDatabase,
null,
$tablePrefix
);
}
if ( !$this->conn ) {
throw new DBConnectionError( $this, $this->lastError() );
}
$this->opened = 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\'' );
$this->doQuery( 'ALTER SESSION SET NLS_NUMERIC_CHARACTERS=\'.,\'' );
return (bool)$this->conn;
}
/**
* Closes a database connection, if it is open
* Returns success, true if already closed
* @return bool
*/
protected function closeConnection() {
return oci_close( $this->conn );
}
function execFlags() {
return $this->trxLevel ? OCI_NO_AUTO_COMMIT : OCI_COMMIT_ON_SUCCESS;
}
protected function doQuery( $sql ) {
wfDebug( "SQL: [$sql]\n" );
if ( !StringUtils::isUtf8( $sql ) ) {
throw new InvalidArgumentException( "SQL encoding is invalid\n$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
);
Wikimedia\suppressWarnings();
$this->mLastResult = $stmt = oci_parse( $this->conn, $sql );
if ( $stmt === false ) {
$e = oci_error( $this->conn );
$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;
}
}
Wikimedia\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|ORAResult $res
*/
function freeResult( $res ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
$res->free();
}
/**
* @param ResultWrapper|ORAResult $res
* @return mixed
*/
function fetchObject( $res ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
return $res->fetchObject();
}
/**
* @param ResultWrapper|ORAResult $res
* @return mixed
*/
function fetchRow( $res ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
return $res->fetchRow();
}
/**
* @param ResultWrapper|ORAResult $res
* @return int
*/
function numRows( $res ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
return $res->numRows();
}
/**
* @param ResultWrapper|ORAResult $res
* @return int
*/
function numFields( $res ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
return $res->numFields();
}
function fieldName( $stmt, $n ) {
return oci_field_name( $stmt, $n );
}
function insertId() {
$res = $this->query( "SELECT lastval_pkg.getLastval FROM dual" );
$row = $this->fetchRow( $res );
return is_null( $row[0] ) ? null : (int)$row[0];
}
/**
* @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->conn === false ) {
$e = oci_error();
} else {
$e = oci_error( $this->conn );
}
return $e['message'];
}
function lastErrno() {
if ( $this->conn === false ) {
$e = oci_error();
} else {
$e = oci_error( $this->conn );
}
return $e['code'];
}
protected function fetchAffectedRowCount() {
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 = [] ) {
if ( !count( $a ) ) {
return true;
}
if ( !is_array( $options ) ) {
$options = [ $options ];
}
if ( in_array( 'IGNORE', $options ) ) {
$this->ignoreDupValOnIndex = true;
}
if ( !is_array( reset( $a ) ) ) {
$a = [ $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 ) {
$table = $this->tableName( $table );
// "INSERT INTO tables (a, b, c)"
$sql = "INSERT INTO " . $table . " (" . implode( ',', 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 .= ')';
$this->mLastResult = $stmt = oci_parse( $this->conn, $sql );
if ( $stmt === false ) {
$e = oci_error( $this->conn );
$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 = MediaWikiServices::getInstance()->getContentLanguage()->
checkTitleEncoding( $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 */
$lob[$col] = oci_new_descriptor( $this->conn, OCI_D_LOB );
if ( $lob[$col] === 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 );
}
}
}
Wikimedia\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 );
}
Wikimedia\restoreWarnings();
if ( isset( $lob ) ) {
foreach ( $lob as $lob_v ) {
$lob_v->free();
}
}
if ( !$this->trxLevel ) {
oci_commit( $this->conn );
}
return oci_free_statement( $stmt );
}
function nativeInsertSelect( $destTable, $srcTable, $varMap, $conds, $fname = __METHOD__,
$insertOptions = [], $selectOptions = [], $selectJoinConds = []
) {
$destTable = $this->tableName( $destTable );
$sequenceData = $this->getSequenceData( $destTable );
if ( $sequenceData !== 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++ );
}
$selectSql = $this->selectSQLText(
$srcTable,
array_values( $varMap ),
$conds,
$fname,
$selectOptions,
$selectJoinConds
);
$sql = "INSERT INTO $destTable (" . implode( ',', array_keys( $varMap ) ) . ') ' . $selectSql;
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 = [ $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 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->tablePrefix}MWUSER',
'{$this->tablePrefix}USER',
atc.table_name
) || '_' ||
atc.column_name || '_SEQ' = '{$this->tablePrefix}' || asq.sequence_name
AND asq.sequence_owner = upper('{$this->getDBname()}')
AND atc.owner = upper('{$this->getDBname()}')" );
while ( ( $row = $result->fetchRow() ) !== false ) {
$this->sequenceData[$row[1]] = [
'sequence' => $row[0],
'column' => $row[2]
];
}
}
$table = strtolower( $this->removeIdentifierQuotes( $this->tableName( $table ) ) );
return $this->sequenceData[$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->tablePrefix ) );
$oldPrefix = substr( $oldName, 0, strlen( $oldName ) - strlen( $tabName ) );
$newPrefix = strtoupper( $this->tablePrefix );
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->getDBname() );
$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 = [];
$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%\''
);
$row = $rset->fetchRow();
if ( !$row ) {
return oci_server_version( $this->conn );
}
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->getDBname() );
$sql = "SELECT 1 FROM all_indexes WHERE owner='$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->getDBname() ) );
$sql = "SELECT 1 FROM all_tables WHERE owner=$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|false
*/
private function fieldInfoMulti( $table, $field ) {
$field = strtoupper( $field );
if ( is_array( $table ) ) {
$table = array_map( [ $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->conn,
'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->trxLevel = 1;
$this->doQuery( 'SET CONSTRAINTS ALL DEFERRED' );
}
protected function doCommit( $fname = __METHOD__ ) {
if ( $this->trxLevel ) {
$ret = oci_commit( $this->conn );
if ( !$ret ) {
throw new DBUnexpectedError( $this, $this->lastError() );
}
$this->trxLevel = 0;
$this->doQuery( 'SET CONSTRAINTS ALL IMMEDIATE' );
}
}
protected function doRollback( $fname = __METHOD__ ) {
if ( $this->trxLevel ) {
oci_rollback( $this->conn );
$this->trxLevel = 0;
$this->doQuery( 'SET CONSTRAINTS ALL IMMEDIATE' );
}
}
function sourceStream(
$fp,
callable $lineCallback = null,
callable $resultCallback = null,
$fname = __METHOD__, callable $inputCallback = null
) {
$cmd = '';
$done = false;
$dollarquote = false;
$replacements = [];
// Defines must comply with ^define\s*([^\s=]*)\s*=\s?'\{\$([^\}]*)\}';
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;
}
protected function doSelectDomain( DatabaseDomain $domain ) {
if ( $domain->getSchema() !== null ) {
// We use the *database* aspect of $domain for schema, not the domain schema
throw new DBExpectedError( $this, __CLASS__ . ": domain schemas are not supported." );
}
$database = $domain->getDatabase();
if ( $database === null || $database === $this->user ) {
// Backward compatibility
$this->currentDomain = $domain;
return true;
}
// https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj32268.html
$encDatabase = $this->addIdentifierQuotes( strtoupper( $database ) );
$sql = "ALTER SESSION SET CURRENT_SCHEMA=$encDatabase";
$stmt = oci_parse( $this->conn, $sql );
Wikimedia\suppressWarnings();
$success = oci_execute( $stmt );
Wikimedia\restoreWarnings();
if ( $success ) {
// Update that domain fields on success (no exception thrown)
$this->currentDomain = $domain;
} else {
$e = oci_error( $stmt );
$this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ );
}
return true;
}
function strencode( $s ) {
return str_replace( "'", "''", $s );
}
function addQuotes( $s ) {
$contLang = MediaWikiServices::getInstance()->getContentLanguage();
if ( isset( $contLang->mLoaded ) && $contLang->mLoaded ) {
$s = $contLang->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 ) {
$col_info = $this->fieldInfoMulti( $table, $col );
$col_type = $col_info != false ? $col_info->type() : 'CONSTANT';
if ( $col_type == 'CLOB' ) {
$col = 'TO_CHAR(' . $col . ')';
$val =
MediaWikiServices::getInstance()->getContentLanguage()->checkTitleEncoding( $val );
} elseif ( $col_type == 'VARCHAR2' ) {
$val =
MediaWikiServices::getInstance()->getContentLanguage()->checkTitleEncoding( $val );
}
}
private function wrapConditionsForWhere( $table, $conds, $parentCol = null ) {
$conds2 = [];
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 = [], $join_conds = []
) {
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 = [];
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 = '';
}
if ( isset( $options['IGNORE INDEX'] ) && !is_array( $options['IGNORE INDEX'] ) ) {
$ignoreIndex = $this->ignoreIndexClause( $options['IGNORE INDEX'] );
} else {
$ignoreIndex = '';
}
return [ $startOpts, $useIndex, $preLimitTail, $postLimitTail, $ignoreIndex ];
}
public function delete( $table, $conds, $fname = __METHOD__ ) {
global $wgActorTableSchemaMigrationStage;
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
// @todo: Normalize the schema to match MySQL, no special FKs and such
$table = $this->tableName( $table );
if ( $table == $this->tableName( 'user' ) &&
( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_WRITE_OLD )
) {
$this->update( 'archive', [ 'ar_user' => 0 ],
[ 'ar_user' => $conds['user_id'] ], $fname );
$this->update( 'ipblocks', [ 'ipb_user' => 0 ],
[ 'ipb_user' => $conds['user_id'] ], $fname );
$this->update( 'image', [ 'img_user' => 0 ],
[ 'img_user' => $conds['user_id'] ], $fname );
$this->update( 'oldimage', [ 'oi_user' => 0 ],
[ 'oi_user' => $conds['user_id'] ], $fname );
$this->update( 'filearchive', [ 'fa_deleted_user' => 0 ],
[ 'fa_deleted_user' => $conds['user_id'] ], $fname );
$this->update( 'filearchive', [ 'fa_user' => 0 ],
[ 'fa_user' => $conds['user_id'] ], $fname );
$this->update( 'uploadstash', [ 'us_user' => 0 ],
[ 'us_user' => $conds['user_id'] ], $fname );
$this->update( 'recentchanges', [ 'rc_user' => 0 ],
[ 'rc_user' => $conds['user_id'] ], $fname );
$this->update( 'logging', [ 'log_user' => 0 ],
[ 'log_user' => $conds['user_id'] ], $fname );
} elseif ( $table == $this->tableName( 'image' ) ) {
$this->update( 'oldimage', [ 'oi_name' => 0 ],
[ '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 = [] ) {
$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 !== [] && $conds !== '*' ) {
$conds = $this->wrapConditionsForWhere( $table, $conds );
$sql .= ' WHERE ' . $this->makeList( $conds, LIST_AND );
}
$this->mLastResult = $stmt = oci_parse( $this->conn, $sql );
if ( $stmt === false ) {
$e = oci_error( $this->conn );
$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 = MediaWikiServices::getInstance()->getContentLanguage()->
checkTitleEncoding( $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 */
$lob[$col] = oci_new_descriptor( $this->conn, OCI_D_LOB );
if ( $lob[$col] === 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 );
}
}
}
Wikimedia\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 );
}
Wikimedia\restoreWarnings();
if ( isset( $lob ) ) {
foreach ( $lob as $lob_v ) {
$lob_v->free();
}
}
if ( !$this->trxLevel ) {
oci_commit( $this->conn );
}
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 getServer() {
return $this->server;
}
public function buildGroupConcatField(
$delim, $table, $field, $conds = '', $join_conds = []
) {
$fld = "LISTAGG($field," . $this->addQuotes( $delim ) . ") WITHIN GROUP (ORDER BY $field)";
return '(' . $this->selectSQLText( $table, $fld, $conds, null, [], $join_conds ) . ')';
}
public function buildSubstring( $input, $startPosition, $length = null ) {
$this->assertBuildSubstringParams( $startPosition, $length );
$params = [ $input, $startPosition ];
if ( $length !== null ) {
$params[] = $length;
}
return 'SUBSTR(' . implode( ',', $params ) . ')';
}
/**
* @param string $field Field or column to cast
* @return string
* @since 1.28
*/
public function buildStringCast( $field ) {
return 'CAST ( ' . $field . ' AS VARCHAR2 )';
}
public function getInfinity() {
return '31-12-2030 12:00:00.000000';
}
}
Zerion Mini Shell 1.0