1170 lines
31 KiB
PHP
1170 lines
31 KiB
PHP
<?php
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/**
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* @ingroup Database
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* @file
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*/
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/**
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* This is the Oracle database abstraction layer.
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* @ingroup Database
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*/
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class ORABlob {
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var $mData;
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function __construct( $data ) {
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$this->mData = $data;
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}
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function getData() {
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return $this->mData;
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}
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}
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/**
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* The oci8 extension is fairly weak and doesn't support oci_num_rows, among
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* other things. We use a wrapper class to handle that and other
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* Oracle-specific bits, like converting column names back to lowercase.
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* @ingroup Database
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*/
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class ORAResult {
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private $rows;
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private $cursor;
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private $stmt;
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private $nrows;
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private $unique;
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private function array_unique_md( $array_in ) {
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$array_out = array();
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$array_hashes = array();
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foreach ( $array_in as $key => $item ) {
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$hash = md5( serialize( $item ) );
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if ( !isset( $array_hashes[$hash] ) ) {
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$array_hashes[$hash] = $hash;
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$array_out[] = $item;
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}
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}
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return $array_out;
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}
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function __construct( &$db, $stmt, $unique = false ) {
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$this->db =& $db;
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if ( ( $this->nrows = oci_fetch_all( $stmt, $this->rows, 0, - 1, OCI_FETCHSTATEMENT_BY_ROW | OCI_NUM ) ) === false ) {
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$e = oci_error( $stmt );
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$db->reportQueryError( $e['message'], $e['code'], '', __FUNCTION__ );
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return;
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}
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if ( $unique ) {
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$this->rows = $this->array_unique_md( $this->rows );
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$this->nrows = count( $this->rows );
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}
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$this->cursor = 0;
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$this->stmt = $stmt;
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}
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public function free() {
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oci_free_statement( $this->stmt );
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}
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public function seek( $row ) {
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$this->cursor = min( $row, $this->nrows );
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}
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public function numRows() {
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return $this->nrows;
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}
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public function numFields() {
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return oci_num_fields( $this->stmt );
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}
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public function fetchObject() {
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if ( $this->cursor >= $this->nrows ) {
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return false;
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}
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$row = $this->rows[$this->cursor++];
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$ret = new stdClass();
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foreach ( $row as $k => $v ) {
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$lc = strtolower( oci_field_name( $this->stmt, $k + 1 ) );
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$ret->$lc = $v;
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}
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return $ret;
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}
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public function fetchRow() {
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if ( $this->cursor >= $this->nrows ) {
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return false;
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}
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$row = $this->rows[$this->cursor++];
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$ret = array();
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foreach ( $row as $k => $v ) {
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$lc = strtolower( oci_field_name( $this->stmt, $k + 1 ) );
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$ret[$lc] = $v;
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$ret[$k] = $v;
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}
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return $ret;
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}
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}
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/**
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* Utility class.
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* @ingroup Database
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*/
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class ORAField {
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private $name, $tablename, $default, $max_length, $nullable,
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$is_pk, $is_unique, $is_multiple, $is_key, $type;
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function __construct( $info ) {
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$this->name = $info['column_name'];
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$this->tablename = $info['table_name'];
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$this->default = $info['data_default'];
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$this->max_length = $info['data_length'];
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$this->nullable = $info['not_null'];
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$this->is_pk = isset( $info['prim'] ) && $info['prim'] == 1 ? 1 : 0;
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$this->is_unique = isset( $info['uniq'] ) && $info['uniq'] == 1 ? 1 : 0;
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$this->is_multiple = isset( $info['nonuniq'] ) && $info['nonuniq'] == 1 ? 1 : 0;
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$this->is_key = ( $this->is_pk || $this->is_unique || $this->is_multiple );
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$this->type = $info['data_type'];
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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 defaultValue() {
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return $this->default;
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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 nullable() {
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return $this->nullable;
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}
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function isKey() {
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return $this->is_key;
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}
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function isMultipleKey() {
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return $this->is_multiple;
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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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}
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/**
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* @ingroup Database
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*/
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class DatabaseOracle 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 $lastResult = null;
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var $cursor = 0;
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var $mAffectedRows;
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var $ignore_DUP_VAL_ON_INDEX = false;
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var $sequenceData = null;
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var $defaultCharset = 'AL32UTF8';
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var $mFieldInfoCache = array();
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function __construct( $server = false, $user = false, $password = false, $dbName = false,
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$failFunction = false, $flags = 0, $tablePrefix = 'get from global' )
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{
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$tablePrefix = $tablePrefix == 'get from global' ? $tablePrefix : strtoupper( $tablePrefix );
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parent::__construct( $server, $user, $password, $dbName, $failFunction, $flags, $tablePrefix );
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wfRunHooks( 'DatabaseOraclePostInit', array( &$this ) );
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}
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function getType() {
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return 'oracle';
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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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static function newFromParams( $server, $user, $password, $dbName, $failFunction = false, $flags = 0 )
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{
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return new DatabaseOracle( $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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if ( !function_exists( 'oci_connect' ) ) {
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throw new DBConnectionError( $this, "Oracle functions missing, have you compiled PHP with the --with-oci8 option?\n (Note: if you recently installed PHP, you may need to restart your webserver and database)\n" );
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}
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$this->close();
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$this->mServer = $server;
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$this->mUser = $user;
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$this->mPassword = $password;
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$this->mDBname = $dbName;
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if ( !strlen( $user ) ) { # e.g. the class is being loaded
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return;
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}
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$session_mode = $this->mFlags & DBO_SYSDBA ? OCI_SYSDBA : OCI_DEFAULT;
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if ( $this->mFlags & DBO_DEFAULT ) {
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$this->mConn = oci_new_connect( $user, $password, $dbName, $this->defaultCharset, $session_mode );
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} else {
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$this->mConn = oci_connect( $user, $password, $dbName, $this->defaultCharset, $session_mode );
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}
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if ( $this->mConn == false ) {
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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( $this->lastError() . "\n" );
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return false;
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}
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$this->mOpened = true;
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# removed putenv calls because they interfere with the system globaly
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$this->doQuery( 'ALTER SESSION SET NLS_TIMESTAMP_FORMAT=\'DD-MM-YYYY HH24:MI:SS.FF6\'' );
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$this->doQuery( 'ALTER SESSION SET NLS_TIMESTAMP_TZ_FORMAT=\'DD-MM-YYYY HH24:MI:SS.FF6\'' );
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return $this->mConn;
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}
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/**
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* Closes a database connection, if it is open
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* Returns success, true if already closed
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*/
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function close() {
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$this->mOpened = false;
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if ( $this->mConn ) {
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return oci_close( $this->mConn );
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} else {
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return true;
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}
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}
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function execFlags() {
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return $this->mTrxLevel ? OCI_DEFAULT : OCI_COMMIT_ON_SUCCESS;
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}
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function doQuery( $sql ) {
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wfDebug( "SQL: [$sql]\n" );
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if ( !mb_check_encoding( $sql ) ) {
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throw new MWException( "SQL encoding is invalid\n$sql" );
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}
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// handle some oracle specifics
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// remove AS column/table/subquery namings
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if ( !defined( 'MEDIAWIKI_INSTALL' ) ) {
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$sql = preg_replace( '/ as /i', ' ', $sql );
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}
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// Oracle has issues with UNION clause if the statement includes LOB fields
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// So we do a UNION ALL and then filter the results array with array_unique
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$union_unique = ( preg_match( '/\/\* UNION_UNIQUE \*\/ /', $sql ) != 0 );
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// EXPLAIN syntax in Oracle is EXPLAIN PLAN FOR and it return nothing
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// you have to select data from plan table after explain
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$explain_id = date( 'dmYHis' );
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$sql = preg_replace( '/^EXPLAIN /', 'EXPLAIN PLAN SET STATEMENT_ID = \'' . $explain_id . '\' FOR', $sql, 1, $explain_count );
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wfSuppressWarnings();
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if ( ( $this->mLastResult = $stmt = oci_parse( $this->mConn, $sql ) ) === false ) {
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$e = oci_error( $this->mConn );
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$this->reportQueryError( $e['message'], $e['code'], $sql, __FUNCTION__ );
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}
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if ( oci_execute( $stmt, $this->execFlags() ) == false ) {
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$e = oci_error( $stmt );
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if ( !$this->ignore_DUP_VAL_ON_INDEX || $e['code'] != '1' ) {
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$this->reportQueryError( $e['message'], $e['code'], $sql, __FUNCTION__ );
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}
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}
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wfRestoreWarnings();
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if ( $explain_count > 0 ) {
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return $this->doQuery( 'SELECT id, cardinality "ROWS" FROM plan_table WHERE statement_id = \'' . $explain_id . '\'' );
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} elseif ( oci_statement_type( $stmt ) == 'SELECT' ) {
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return new ORAResult( $this, $stmt, $union_unique );
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} else {
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$this->mAffectedRows = oci_num_rows( $stmt );
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return true;
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}
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}
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function queryIgnore( $sql, $fname = '' ) {
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return $this->query( $sql, $fname, true );
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}
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function freeResult( $res ) {
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if ( $res instanceof ORAResult ) {
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$res->free();
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} else {
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$res->result->free();
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}
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}
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function fetchObject( $res ) {
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if ( $res instanceof ORAResult ) {
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return $res->numRows();
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} else {
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return $res->result->fetchObject();
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}
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}
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function fetchRow( $res ) {
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if ( $res instanceof ORAResult ) {
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return $res->fetchRow();
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} else {
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return $res->result->fetchRow();
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}
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}
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function numRows( $res ) {
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if ( $res instanceof ORAResult ) {
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return $res->numRows();
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} else {
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return $res->result->numRows();
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}
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}
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function numFields( $res ) {
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if ( $res instanceof ORAResult ) {
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return $res->numFields();
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} else {
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return $res->result->numFields();
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}
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}
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function fieldName( $stmt, $n ) {
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return oci_field_name( $stmt, $n );
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}
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/**
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* This must be called after nextSequenceVal
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*/
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function insertId() {
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return $this->mInsertId;
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}
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function dataSeek( $res, $row ) {
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if ( $res instanceof ORAResult ) {
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$res->seek( $row );
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} else {
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$res->result->seek( $row );
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}
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}
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function lastError() {
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if ( $this->mConn === false ) {
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$e = oci_error();
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} else {
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$e = oci_error( $this->mConn );
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}
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return $e['message'];
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}
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function lastErrno() {
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if ( $this->mConn === false ) {
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$e = oci_error();
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} else {
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$e = oci_error( $this->mConn );
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}
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return $e['code'];
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}
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function affectedRows() {
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return $this->mAffectedRows;
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}
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/**
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* Returns information about an index
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* If errors are explicitly ignored, returns NULL on failure
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*/
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function indexInfo( $table, $index, $fname = 'DatabaseOracle::indexExists' ) {
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return false;
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}
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function indexUnique( $table, $index, $fname = 'DatabaseOracle::indexUnique' ) {
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return false;
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}
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function insert( $table, $a, $fname = 'DatabaseOracle::insert', $options = array() ) {
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if ( !count( $a ) ) {
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return true;
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}
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if ( !is_array( $options ) ) {
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$options = array( $options );
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}
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if ( in_array( 'IGNORE', $options ) ) {
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$this->ignore_DUP_VAL_ON_INDEX = true;
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}
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if ( !is_array( reset( $a ) ) ) {
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$a = array( $a );
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}
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foreach ( $a as &$row ) {
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$this->insertOneRow( $table, $row, $fname );
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}
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$retVal = true;
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if ( in_array( 'IGNORE', $options ) ) {
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$this->ignore_DUP_VAL_ON_INDEX = false;
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}
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return $retVal;
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}
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private function insertOneRow( $table, $row, $fname ) {
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global $wgLang;
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$table = $this->tableName( $table );
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// "INSERT INTO tables (a, b, c)"
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$sql = "INSERT INTO " . $table . " (" . join( ',', array_keys( $row ) ) . ')';
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$sql .= " VALUES (";
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// for each value, append ":key"
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$first = true;
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foreach ( $row as $col => $val ) {
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if ( $first ) {
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$sql .= $val !== null ? ':' . $col : 'NULL';
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} else {
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$sql .= $val !== null ? ', :' . $col : ', NULL';
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}
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$first = false;
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}
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$sql .= ')';
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$stmt = oci_parse( $this->mConn, $sql );
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foreach ( $row as $col => &$val ) {
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$col_info = $this->fieldInfoMulti( $table, $col );
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$col_type = $col_info != false ? $col_info->type() : 'CONSTANT';
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if ( $val === null ) {
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// do nothing ... null was inserted in statement creation
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} elseif ( $col_type != 'BLOB' && $col_type != 'CLOB' ) {
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if ( is_object( $val ) ) {
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$val = $val->getData();
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}
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if ( preg_match( '/^timestamp.*/i', $col_type ) == 1 && strtolower( $val ) == 'infinity' ) {
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$val = '31-12-2030 12:00:00.000000';
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}
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$val = ( $wgLang != null ) ? $wgLang->checkTitleEncoding( $val ) : $val;
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if ( oci_bind_by_name( $stmt, ":$col", $val ) === false ) {
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$this->reportQueryError( $this->lastErrno(), $this->lastError(), $sql, __METHOD__ );
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}
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} else {
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if ( ( $lob[$col] = oci_new_descriptor( $this->mConn, OCI_D_LOB ) ) === false ) {
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$e = oci_error( $stmt );
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throw new DBUnexpectedError( $this, "Cannot create LOB descriptor: " . $e['message'] );
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}
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if ( $col_type == 'BLOB' ) { // is_object($val)) {
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$lob[$col]->writeTemporary( $val ); // ->getData());
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oci_bind_by_name( $stmt, ":$col", $lob[$col], - 1, SQLT_BLOB );
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} else {
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$lob[$col]->writeTemporary( $val );
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oci_bind_by_name( $stmt, ":$col", $lob[$col], - 1, OCI_B_CLOB );
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}
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}
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}
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wfSuppressWarnings();
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if ( oci_execute( $stmt, OCI_DEFAULT ) === false ) {
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$e = oci_error( $stmt );
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if ( !$this->ignore_DUP_VAL_ON_INDEX || $e['code'] != '1' ) {
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$this->reportQueryError( $e['message'], $e['code'], $sql, __METHOD__ );
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} else {
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$this->mAffectedRows = oci_num_rows( $stmt );
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}
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} else {
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$this->mAffectedRows = oci_num_rows( $stmt );
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}
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wfRestoreWarnings();
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if ( isset( $lob ) ) {
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foreach ( $lob as $lob_i => $lob_v ) {
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$lob_v->free();
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}
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}
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|
|
if ( !$this->mTrxLevel ) {
|
|
oci_commit( $this->mConn );
|
|
}
|
|
|
|
oci_free_statement( $stmt );
|
|
}
|
|
|
|
function insertSelect( $destTable, $srcTable, $varMap, $conds, $fname = 'DatabaseOracle::insertSelect',
|
|
$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 $key => &$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->ignore_DUP_VAL_ON_INDEX = true;
|
|
}
|
|
|
|
$retval = $this->query( $sql, $fname );
|
|
|
|
if ( in_array( 'IGNORE', $insertOptions ) ) {
|
|
$this->ignore_DUP_VAL_ON_INDEX = false;
|
|
}
|
|
|
|
return $retval;
|
|
}
|
|
|
|
function tableName( $name ) {
|
|
global $wgSharedDB, $wgSharedPrefix, $wgSharedTables;
|
|
/*
|
|
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;
|
|
}
|
|
|
|
/*
|
|
The rest of procedure is equal to generic Databse class
|
|
except for the quoting style
|
|
*/
|
|
if ( $name[0] == '"' && substr( $name, - 1, 1 ) == '"' ) {
|
|
return $name;
|
|
}
|
|
if ( preg_match( '/(^|\s)(DISTINCT|JOIN|ON|AS)(\s|$)/i', $name ) !== 0 ) {
|
|
return $name;
|
|
}
|
|
$dbDetails = array_reverse( explode( '.', $name, 2 ) );
|
|
if ( isset( $dbDetails[1] ) ) {
|
|
@list( $table, $database ) = $dbDetails;
|
|
} else {
|
|
@list( $table ) = $dbDetails;
|
|
}
|
|
|
|
$prefix = $this->mTablePrefix;
|
|
|
|
if ( isset( $database ) ) {
|
|
$table = ( $table[0] == '`' ? $table : "`{$table}`" );
|
|
}
|
|
|
|
if ( !isset( $database ) && isset( $wgSharedDB ) && $table[0] != '"'
|
|
&& isset( $wgSharedTables )
|
|
&& is_array( $wgSharedTables )
|
|
&& in_array( $table, $wgSharedTables )
|
|
) {
|
|
$database = $wgSharedDB;
|
|
$prefix = isset( $wgSharedPrefix ) ? $wgSharedPrefix : $prefix;
|
|
}
|
|
|
|
if ( isset( $database ) ) {
|
|
$database = ( $database[0] == '"' ? $database : "\"{$database}\"" );
|
|
}
|
|
$table = ( $table[0] == '"' ? $table : "\"{$prefix}{$table}\"" );
|
|
|
|
$tableName = ( isset( $database ) ? "{$database}.{$table}" : "{$table}" );
|
|
|
|
return strtoupper( $tableName );
|
|
}
|
|
|
|
/**
|
|
* Return the next in a sequence, save the value for retrieval via insertId()
|
|
*/
|
|
function nextSequenceValue( $seqName ) {
|
|
$res = $this->query( "SELECT $seqName.nextval FROM dual" );
|
|
$row = $this->fetchRow( $res );
|
|
$this->mInsertId = $row[0];
|
|
$this->freeResult( $res );
|
|
return $this->mInsertId;
|
|
}
|
|
|
|
/**
|
|
* Return sequence_name if table has a sequence
|
|
*/
|
|
private function getSequenceData( $table ) {
|
|
if ( $this->sequenceData == null ) {
|
|
$result = $this->query( "SELECT lower(us.sequence_name), lower(utc.table_name), lower(utc.column_name) from user_sequences us, user_tab_columns utc where us.sequence_name = utc.table_name||'_'||utc.column_name||'_SEQ'" );
|
|
|
|
while ( ( $row = $result->fetchRow() ) !== false ) {
|
|
$this->sequenceData[$this->tableName( $row[1] )] = array(
|
|
'sequence' => $row[0],
|
|
'column' => $row[2]
|
|
);
|
|
}
|
|
}
|
|
|
|
return ( isset( $this->sequenceData[$table] ) ) ? $this->sequenceData[$table] : false;
|
|
}
|
|
|
|
# REPLACE query wrapper
|
|
# Oracle 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 = 'DatabaseOracle::replace' ) {
|
|
$table = $this->tableName( $table );
|
|
|
|
if ( count( $rows ) == 0 ) {
|
|
return;
|
|
}
|
|
|
|
# Single row case
|
|
if ( !is_array( reset( $rows ) ) ) {
|
|
$rows = array( $rows );
|
|
}
|
|
|
|
$sequenceData = $this->getSequenceData( $table );
|
|
|
|
foreach ( $rows as $row ) {
|
|
# Delete rows which collide
|
|
if ( $uniqueIndexes ) {
|
|
$condsDelete = array();
|
|
foreach ( $uniqueIndexes as $index )
|
|
$condsDelete[$index] = $row[$index];
|
|
if (count($condsDelete) > 0) {
|
|
$this->delete( $table, $condsDelete, $fname );
|
|
}
|
|
}
|
|
|
|
if ( $sequenceData !== false && !isset( $row[$sequenceData['column']] ) ) {
|
|
$row[$sequenceData['column']] = $this->nextSequenceValue( $sequenceData['sequence'] );
|
|
}
|
|
|
|
# Now insert the row
|
|
$this->insert( $table, $row, $fname );
|
|
}
|
|
}
|
|
|
|
# DELETE where the condition is a join
|
|
function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = "DatabaseOracle::deleteJoin" ) {
|
|
if ( !$conds ) {
|
|
throw new DBUnexpectedError( $this, 'DatabaseOracle::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 ) {
|
|
$fieldInfoData = $this->fieldInfo( $table, $field);
|
|
if ( $fieldInfoData->type == "varchar" ) {
|
|
$size = $row->size - 4;
|
|
} else {
|
|
$size = $row->size;
|
|
}
|
|
return $size;
|
|
}
|
|
|
|
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 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 = 'DatabaseOracle::duplicateTableStructure' ) {
|
|
$temporary = $temporary ? 'TRUE' : 'FALSE';
|
|
return $this->query( 'BEGIN DUPLICATE_TABLE(\'' . $oldName . '\', \'' . $newName . '\', ' . $temporary . '); END;', $fname );
|
|
}
|
|
|
|
function timestamp( $ts = 0 ) {
|
|
return wfTimestamp( TS_ORACLE, $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 {
|
|
throw new DBQueryError( $this, $error, $errno, $sql, $fname );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return string wikitext of a link to the server software's web site
|
|
*/
|
|
function getSoftwareLink() {
|
|
return '[http://www.oracle.com/ Oracle]';
|
|
}
|
|
|
|
/**
|
|
* @return string Version information from the database
|
|
*/
|
|
function getServerVersion() {
|
|
return oci_server_version( $this->mConn );
|
|
}
|
|
|
|
/**
|
|
* Query whether a given table exists (in the given schema, or the default mw one if not given)
|
|
*/
|
|
function tableExists( $table ) {
|
|
$SQL = "SELECT 1 FROM user_tables WHERE table_name='$table'";
|
|
$res = $this->doQuery( $SQL );
|
|
if ( $res ) {
|
|
$count = $res->numRows();
|
|
$res->free();
|
|
} else {
|
|
$count = 0;
|
|
}
|
|
return $count;
|
|
}
|
|
|
|
/**
|
|
* 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 $table
|
|
* @param String $field
|
|
*/
|
|
private function fieldInfoMulti( $table, $field ) {
|
|
$tableWhere = '';
|
|
$field = strtoupper($field);
|
|
if (is_array($table)) {
|
|
$table = array_map( array( &$this, 'tableName' ), $table );
|
|
$tableWhere = 'IN (';
|
|
foreach($table as &$singleTable) {
|
|
$singleTable = strtoupper(trim( $singleTable, '"' ));
|
|
if (isset($this->mFieldInfoCache["$singleTable.$field"])) {
|
|
return $this->mFieldInfoCache["$singleTable.$field"];
|
|
}
|
|
$tableWhere .= '\''.$singleTable.'\',';
|
|
}
|
|
$tableWhere = rtrim($tableWhere, ',').')';
|
|
} else {
|
|
$table = strtoupper(trim( $this->tableName($table), '"' ));
|
|
if (isset($this->mFieldInfoCache["$table.$field"])) {
|
|
return $this->mFieldInfoCache["$table.$field"];
|
|
}
|
|
$tableWhere = '= \''.$table.'\'';
|
|
}
|
|
|
|
$fieldInfoStmt = oci_parse( $this->mConn, 'SELECT * FROM '.$this->tableName('wiki_field_info_full').' WHERE table_name '.$tableWhere.' and column_name = \''.$field.'\'' );
|
|
if ( oci_execute( $fieldInfoStmt, OCI_DEFAULT ) === 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;
|
|
}
|
|
} else {
|
|
$fieldInfoTemp = new ORAField( $res->fetchRow() );
|
|
$table = $fieldInfoTemp->tableName();
|
|
$this->mFieldInfoCache["$table.$field"] = $fieldInfoTemp;
|
|
return $fieldInfoTemp;
|
|
}
|
|
}
|
|
|
|
function fieldInfo( $table, $field ) {
|
|
if ( is_array( $table ) ) {
|
|
throw new DBUnexpectedError( $this, 'Database::fieldInfo called with table array!' );
|
|
}
|
|
return $this->fieldInfoMulti ($table, $field);
|
|
}
|
|
|
|
function fieldExists( $table, $field, $fname = 'DatabaseOracle::fieldExists' ) {
|
|
return (bool)$this->fieldInfo( $table, $field, $fname );
|
|
}
|
|
|
|
function begin( $fname = '' ) {
|
|
$this->mTrxLevel = 1;
|
|
}
|
|
|
|
function immediateCommit( $fname = '' ) {
|
|
return true;
|
|
}
|
|
|
|
function commit( $fname = '' ) {
|
|
oci_commit( $this->mConn );
|
|
$this->mTrxLevel = 0;
|
|
}
|
|
|
|
/* Not even sure why this is used in the main codebase... */
|
|
function limitResultForUpdate( $sql, $num ) {
|
|
return $sql;
|
|
}
|
|
|
|
/* defines must comply with ^define\s*([^\s=]*)\s*=\s?'\{\$([^\}]*)\}'; */
|
|
function sourceStream( $fp, $lineCallback = false, $resultCallback = 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;
|
|
$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 );
|
|
$res = $this->query( $cmd, __METHOD__ );
|
|
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 setup_database() {
|
|
global $wgVersion, $wgDBmwschema, $wgDBts2schema, $wgDBport, $wgDBuser;
|
|
|
|
echo "<li>Creating DB objects</li>\n";
|
|
$res = $this->sourceFile( "../maintenance/ora/tables.sql" );
|
|
|
|
// Avoid the non-standard "REPLACE INTO" syntax
|
|
echo "<li>Populating table interwiki</li>\n";
|
|
$f = fopen( "../maintenance/interwiki.sql", 'r' );
|
|
if ( $f == false ) {
|
|
dieout( "<li>Could not find the interwiki.sql file</li>" );
|
|
}
|
|
|
|
// do it like the postgres :D
|
|
$SQL = "INSERT INTO ".$this->tableName('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])" );
|
|
}
|
|
|
|
echo "<li>Table interwiki successfully populated</li>\n";
|
|
}
|
|
|
|
function strencode( $s ) {
|
|
return str_replace( "'", "''", $s );
|
|
}
|
|
|
|
function addQuotes( $s ) {
|
|
global $wgLang;
|
|
if ( isset( $wgLang->mLoaded ) && $wgLang->mLoaded ) {
|
|
$s = $wgLang->checkTitleEncoding( $s );
|
|
}
|
|
return "'" . $this->strencode( $s ) . "'";
|
|
}
|
|
|
|
function quote_ident( $s ) {
|
|
return $s;
|
|
}
|
|
|
|
function selectRow( $table, $vars, $conds, $fname = 'DatabaseOracle::selectRow', $options = array(), $join_conds = array() ) {
|
|
global $wgLang;
|
|
|
|
$conds2 = array();
|
|
$conds = ($conds != null && !is_array($conds)) ? array($conds) : $conds;
|
|
foreach ( $conds as $col => $val ) {
|
|
$col_info = $this->fieldInfoMulti( $table, $col );
|
|
$col_type = $col_info != false ? $col_info->type() : 'CONSTANT';
|
|
if ( $col_type == 'CLOB' ) {
|
|
$conds2['TO_CHAR(' . $col . ')'] = $wgLang->checkTitleEncoding( $val );
|
|
} elseif ( $col_type == 'VARCHAR2' && !mb_check_encoding( $val ) ) {
|
|
$conds2[$col] = $wgLang->checkTitleEncoding( $val );
|
|
} else {
|
|
$conds2[$col] = $val;
|
|
}
|
|
}
|
|
|
|
return parent::selectRow( $table, $vars, $conds2, $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
|
|
*
|
|
* @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 = '';
|
|
|
|
$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['ORDER BY'] ) ) {
|
|
$preLimitTail .= " ORDER BY {$options['ORDER BY']}";
|
|
}
|
|
|
|
# if ( isset( $noKeyOptions['FOR UPDATE'] ) ) $tailOpts .= ' FOR UPDATE';
|
|
# if ( isset( $noKeyOptions['LOCK IN SHARE MODE'] ) ) $tailOpts .= ' LOCK IN SHARE MODE';
|
|
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 = 'DatabaseOracle::delete' ) {
|
|
global $wgLang;
|
|
|
|
if ( $wgLang != null ) {
|
|
$conds2 = array();
|
|
$conds = ($conds != null && !is_array($conds)) ? array($conds) : $conds;
|
|
foreach ( $conds as $col => $val ) {
|
|
$col_info = $this->fieldInfoMulti( $table, $col );
|
|
$col_type = $col_info != false ? $col_info->type() : 'CONSTANT';
|
|
if ( $col_type == 'CLOB' ) {
|
|
$conds2['TO_CHAR(' . $col . ')'] = $wgLang->checkTitleEncoding( $val );
|
|
} else {
|
|
if ( is_array( $val ) ) {
|
|
$conds2[$col] = $val;
|
|
foreach ( $conds2[$col] as &$val2 ) {
|
|
$val2 = $wgLang->checkTitleEncoding( $val2 );
|
|
}
|
|
} else {
|
|
$conds2[$col] = $wgLang->checkTitleEncoding( $val );
|
|
}
|
|
}
|
|
}
|
|
|
|
return parent::delete( $table, $conds2, $fname );
|
|
} else {
|
|
return parent::delete( $table, $conds, $fname );
|
|
}
|
|
}
|
|
|
|
function bitNot( $field ) {
|
|
// expecting bit-fields smaller than 4bytes
|
|
return 'BITNOT(' . $bitField . ')';
|
|
}
|
|
|
|
function bitAnd( $fieldLeft, $fieldRight ) {
|
|
return 'BITAND(' . $fieldLeft . ', ' . $fieldRight . ')';
|
|
}
|
|
|
|
function bitOr( $fieldLeft, $fieldRight ) {
|
|
return 'BITOR(' . $fieldLeft . ', ' . $fieldRight . ')';
|
|
}
|
|
|
|
/**
|
|
* How lagged is this slave?
|
|
*
|
|
* @return int
|
|
*/
|
|
public function getLag() {
|
|
# Not implemented for Oracle
|
|
return 0;
|
|
}
|
|
|
|
function setFakeSlaveLag( $lag ) { }
|
|
function setFakeMaster( $enabled = true ) { }
|
|
|
|
function getDBname() {
|
|
return $this->mDBname;
|
|
}
|
|
|
|
function getServer() {
|
|
return $this->mServer;
|
|
}
|
|
|
|
public function replaceVars( $ins ) {
|
|
$varnames = array( 'wgDBprefix' );
|
|
if ( $this->mFlags & DBO_SYSDBA ) {
|
|
$varnames[] = 'wgDBOracleDefTS';
|
|
$varnames[] = 'wgDBOracleTempTS';
|
|
}
|
|
|
|
// Ordinary variables
|
|
foreach ( $varnames as $var ) {
|
|
if ( isset( $GLOBALS[$var] ) ) {
|
|
$val = addslashes( $GLOBALS[$var] ); // FIXME: safety check?
|
|
$ins = str_replace( '{$' . $var . '}', $val, $ins );
|
|
$ins = str_replace( '/*$' . $var . '*/`', '`' . $val, $ins );
|
|
$ins = str_replace( '/*$' . $var . '*/', $val, $ins );
|
|
}
|
|
}
|
|
|
|
return parent::replaceVars( $ins );
|
|
}
|
|
|
|
public function getSearchEngine() {
|
|
return 'SearchOracle';
|
|
}
|
|
} // end DatabaseOracle class
|