+++ /dev/null
-<?php
-/**
- * This script is the MSSQL Server database abstraction layer
- *
- * See maintenance/mssql/README for development notes and other specific information
- * @ingroup Database
- * @file
- */
-
-/**
- * @ingroup Database
- */
-class DatabaseMssql extends DatabaseBase {
-
- var $mAffectedRows;
- var $mLastResult;
- var $mLastError;
- var $mLastErrorNo;
- var $mDatabaseFile;
-
- /**
- * Constructor
- */
- function __construct($server = false, $user = false, $password = false, $dbName = false,
- $failFunction = false, $flags = 0, $tablePrefix = 'get from global') {
-
- global $wgOut, $wgDBprefix, $wgCommandLineMode;
- if (!isset($wgOut)) $wgOut = null; # Can't get a reference if it hasn't been set yet
- $this->mOut =& $wgOut;
- $this->mFailFunction = $failFunction;
- $this->mFlags = $flags;
-
- if ( $this->mFlags & DBO_DEFAULT ) {
- if ( $wgCommandLineMode ) {
- $this->mFlags &= ~DBO_TRX;
- } else {
- $this->mFlags |= DBO_TRX;
- }
- }
-
- /** Get the default table prefix*/
- $this->mTablePrefix = $tablePrefix == 'get from global' ? $wgDBprefix : $tablePrefix;
-
- if ($server) $this->open($server, $user, $password, $dbName);
-
- }
-
- function getType() {
- return 'mssql';
- }
-
- /**
- * todo: check if these should be true like parent class
- */
- function implicitGroupby() { return false; }
- function implicitOrderby() { return false; }
-
- static function newFromParams($server, $user, $password, $dbName, $failFunction = false, $flags = 0) {
- return new DatabaseMssql($server, $user, $password, $dbName, $failFunction, $flags);
- }
-
- /** Open an MSSQL database and return a resource handle to it
- * NOTE: only $dbName is used, the other parameters are irrelevant for MSSQL databases
- */
- function open($server,$user,$password,$dbName) {
- wfProfileIn(__METHOD__);
-
- # Test for missing mysql.so
- # First try to load it
- if (!@extension_loaded('mssql')) {
- @dl('mssql.so');
- }
-
- # Fail now
- # Otherwise we get a suppressed fatal error, which is very hard to track down
- if (!function_exists( 'mssql_connect')) {
- throw new DBConnectionError( $this, "MSSQL functions missing, have you compiled PHP with the --with-mssql option?\n" );
- }
-
- $this->close();
- $this->mServer = $server;
- $this->mUser = $user;
- $this->mPassword = $password;
- $this->mDBname = $dbName;
-
- wfProfileIn("dbconnect-$server");
-
- # Try to connect up to three times
- # The kernel's default SYN retransmission period is far too slow for us,
- # so we use a short timeout plus a manual retry.
- $this->mConn = false;
- $max = 3;
- for ( $i = 0; $i < $max && !$this->mConn; $i++ ) {
- if ( $i > 1 ) {
- usleep( 1000 );
- }
- if ($this->mFlags & DBO_PERSISTENT) {
- @/**/$this->mConn = mssql_pconnect($server, $user, $password);
- } else {
- # Create a new connection...
- @/**/$this->mConn = mssql_connect($server, $user, $password, true);
- }
- }
-
- wfProfileOut("dbconnect-$server");
-
- if ($dbName != '') {
- if ($this->mConn !== false) {
- $success = @/**/mssql_select_db($dbName, $this->mConn);
- if (!$success) {
- $error = "Error selecting database $dbName on server {$this->mServer} " .
- "from client host " . wfHostname() . "\n";
- wfLogDBError(" Error selecting database $dbName on server {$this->mServer} \n");
- wfDebug( $error );
- }
- } else {
- wfDebug("DB connection error\n");
- wfDebug("Server: $server, User: $user, Password: ".substr($password, 0, 3)."...\n");
- $success = false;
- }
- } else {
- # Delay USE query
- $success = (bool)$this->mConn;
- }
-
- if (!$success) $this->reportConnectionError();
- $this->mOpened = $success;
- wfProfileOut(__METHOD__);
- return $success;
- }
-
- /**
- * Close an MSSQL database
- */
- function close() {
- $this->mOpened = false;
- if ($this->mConn) {
- if ($this->trxLevel()) $this->commit();
- return mssql_close($this->mConn);
- } else return true;
- }
-
- /**
- * - MSSQL doesn't seem to do buffered results
- * - the trasnaction syntax is modified here to avoid having to replicate
- * Database::query which uses BEGIN, COMMIT, ROLLBACK
- */
- function doQuery($sql) {
- if ($sql == 'BEGIN' || $sql == 'COMMIT' || $sql == 'ROLLBACK') return true; # $sql .= ' TRANSACTION';
- $sql = preg_replace('|[^\x07-\x7e]|','?',$sql); # TODO: need to fix unicode - just removing it here while testing
- $ret = mssql_query($sql, $this->mConn);
- if ($ret === false) {
- $err = mssql_get_last_message();
- if ($err) $this->mlastError = $err;
- $row = mssql_fetch_row(mssql_query('select @@ERROR'));
- if ($row[0]) $this->mlastErrorNo = $row[0];
- } else $this->mlastErrorNo = false;
- return $ret;
- }
-
- /**
- * Free a result object
- */
- function freeResult( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- if ( !@/**/mssql_free_result( $res ) ) {
- throw new DBUnexpectedError( $this, "Unable to free MSSQL result" );
- }
- }
-
- /**
- * Fetch the next row from the given result object, in object form.
- * Fields can be retrieved with $row->fieldname, with fields acting like
- * member variables.
- *
- * @param $res SQL result object as returned from Database::query(), etc.
- * @return MySQL row object
- * @throws DBUnexpectedError Thrown if the database returns an error
- */
- function fetchObject( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- @/**/$row = mssql_fetch_object( $res );
- if ( $this->lastErrno() ) {
- throw new DBUnexpectedError( $this, 'Error in fetchObject(): ' . htmlspecialchars( $this->lastError() ) );
- }
- return $row;
- }
-
- /**
- * Fetch the next row from the given result object, in associative array
- * form. Fields are retrieved with $row['fieldname'].
- *
- * @param $res SQL result object as returned from Database::query(), etc.
- * @return MySQL row object
- * @throws DBUnexpectedError Thrown if the database returns an error
- */
- function fetchRow( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- @/**/$row = mssql_fetch_array( $res );
- if ( $this->lastErrno() ) {
- throw new DBUnexpectedError( $this, 'Error in fetchRow(): ' . htmlspecialchars( $this->lastError() ) );
- }
- return $row;
- }
-
- /**
- * Get the number of rows in a result object
- */
- function numRows( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- @/**/$n = mssql_num_rows( $res );
- if ( $this->lastErrno() ) {
- throw new DBUnexpectedError( $this, 'Error in numRows(): ' . htmlspecialchars( $this->lastError() ) );
- }
- return $n;
- }
-
- /**
- * Get the number of fields in a result object
- * See documentation for mysql_num_fields()
- * @param $res SQL result object as returned from Database::query(), etc.
- */
- function numFields( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- return mssql_num_fields( $res );
- }
-
- /**
- * Get a field name in a result object
- * See documentation for mysql_field_name():
- * http://www.php.net/mysql_field_name
- * @param $res SQL result object as returned from Database::query(), etc.
- * @param $n Int
- */
- function fieldName( $res, $n ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- return mssql_field_name( $res, $n );
- }
-
- /**
- * Get the inserted value of an auto-increment row
- *
- * The value inserted should be fetched from nextSequenceValue()
- *
- * Example:
- * $id = $dbw->nextSequenceValue('page_page_id_seq');
- * $dbw->insert('page',array('page_id' => $id));
- * $id = $dbw->insertId();
- */
- function insertId() {
- $row = mssql_fetch_row(mssql_query('select @@IDENTITY'));
- return $row[0];
- }
-
- /**
- * Change the position of the cursor in a result object
- * See mysql_data_seek()
- * @param $res SQL result object as returned from Database::query(), etc.
- * @param $row Database row
- */
- function dataSeek( $res, $row ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- return mssql_data_seek( $res, $row );
- }
-
- /**
- * Get the last error number
- */
- function lastErrno() {
- return $this->mlastErrorNo;
- }
-
- /**
- * Get a description of the last error
- */
- function lastError() {
- return $this->mlastError;
- }
-
- /**
- * Get the number of rows affected by the last write query
- */
- function affectedRows() {
- return mssql_rows_affected( $this->mConn );
- }
-
- /**
- * Simple UPDATE wrapper
- * Usually aborts on failure
- * If errors are explicitly ignored, returns success
- *
- * This function exists for historical reasons, Database::update() has a more standard
- * calling convention and feature set
- */
- function set( $table, $var, $value, $cond, $fname = 'Database::set' )
- {
- if ($value == "NULL") $value = "''"; # see comments in makeListWithoutNulls()
- $table = $this->tableName( $table );
- $sql = "UPDATE $table SET $var = '" .
- $this->strencode( $value ) . "' WHERE ($cond)";
- return (bool)$this->query( $sql, $fname );
- }
-
- /**
- * Simple SELECT wrapper, returns a single field, input must be encoded
- * Usually aborts on failure
- * If errors are explicitly ignored, returns FALSE on failure
- */
- function selectField( $table, $var, $cond='', $fname = 'Database::selectField', $options = array() ) {
- if ( !is_array( $options ) ) {
- $options = array( $options );
- }
- $options['LIMIT'] = 1;
-
- $res = $this->select( $table, $var, $cond, $fname, $options );
- if ( $res === false || !$this->numRows( $res ) ) {
- return false;
- }
- $row = $this->fetchRow( $res );
- if ( $row !== false ) {
- $this->freeResult( $res );
- return $row[0];
- } else {
- return false;
- }
- }
-
- /**
- * 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['HAVING'] ) ) $preLimitTail .= " HAVING {$options['HAVING']}";
- if ( isset( $options['ORDER BY'] ) ) $preLimitTail .= " ORDER BY {$options['ORDER BY']}";
-
- //if (isset($options['LIMIT'])) {
- // $tailOpts .= $this->limitResult('', $options['LIMIT'],
- // isset($options['OFFSET']) ? $options['OFFSET']
- // : false);
- //}
-
- if ( isset( $noKeyOptions['FOR UPDATE'] ) ) $postLimitTail .= ' FOR UPDATE';
- if ( isset( $noKeyOptions['LOCK IN SHARE MODE'] ) ) $postLimitTail .= ' LOCK IN SHARE MODE';
- if ( isset( $noKeyOptions['DISTINCT'] ) || isset( $noKeyOptions['DISTINCTROW'] ) ) $startOpts .= 'DISTINCT';
-
- # Various MySQL extensions
- if ( isset( $noKeyOptions['STRAIGHT_JOIN'] ) ) $startOpts .= ' /*! STRAIGHT_JOIN */';
- if ( isset( $noKeyOptions['HIGH_PRIORITY'] ) ) $startOpts .= ' HIGH_PRIORITY';
- if ( isset( $noKeyOptions['SQL_BIG_RESULT'] ) ) $startOpts .= ' SQL_BIG_RESULT';
- if ( isset( $noKeyOptions['SQL_BUFFER_RESULT'] ) ) $startOpts .= ' SQL_BUFFER_RESULT';
- if ( isset( $noKeyOptions['SQL_SMALL_RESULT'] ) ) $startOpts .= ' SQL_SMALL_RESULT';
- if ( isset( $noKeyOptions['SQL_CALC_FOUND_ROWS'] ) ) $startOpts .= ' SQL_CALC_FOUND_ROWS';
- if ( isset( $noKeyOptions['SQL_CACHE'] ) ) $startOpts .= ' SQL_CACHE';
- if ( isset( $noKeyOptions['SQL_NO_CACHE'] ) ) $startOpts .= ' SQL_NO_CACHE';
-
- if ( isset( $options['USE INDEX'] ) && ! is_array( $options['USE INDEX'] ) ) {
- $useIndex = $this->useIndexClause( $options['USE INDEX'] );
- } else {
- $useIndex = '';
- }
-
- return array( $startOpts, $useIndex, $preLimitTail, $postLimitTail );
- }
-
- /**
- * SELECT wrapper
- *
- * @param $table Mixed: Array or string, table name(s) (prefix auto-added)
- * @param $vars Mixed: Array or string, field name(s) to be retrieved
- * @param $conds Mixed: Array or string, condition(s) for WHERE
- * @param $fname String: Calling function name (use __METHOD__) for logs/profiling
- * @param $options Array: Associative array of options (e.g. array('GROUP BY' => 'page_title')),
- * see Database::makeSelectOptions code for list of supported stuff
- * @return mixed Database result resource (feed to Database::fetchObject or whatever), or false on failure
- */
- function select( $table, $vars, $conds='', $fname = 'Database::select', $options = array() )
- {
- if( is_array( $vars ) ) {
- $vars = implode( ',', $vars );
- }
- if( !is_array( $options ) ) {
- $options = array( $options );
- }
- if( is_array( $table ) ) {
- if ( isset( $options['USE INDEX'] ) && is_array( $options['USE INDEX'] ) )
- $from = ' FROM ' . $this->tableNamesWithUseIndex( $table, $options['USE INDEX'] );
- else
- $from = ' FROM ' . implode( ',', array_map( array( &$this, 'tableName' ), $table ) );
- } elseif ($table!='') {
- if ($table{0}==' ') {
- $from = ' FROM ' . $table;
- } else {
- $from = ' FROM ' . $this->tableName( $table );
- }
- } else {
- $from = '';
- }
-
- list( $startOpts, $useIndex, $preLimitTail, $postLimitTail ) = $this->makeSelectOptions( $options );
-
- if( !empty( $conds ) ) {
- if ( is_array( $conds ) ) {
- $conds = $this->makeList( $conds, LIST_AND );
- }
- $sql = "SELECT $startOpts $vars $from $useIndex WHERE $conds $preLimitTail";
- } else {
- $sql = "SELECT $startOpts $vars $from $useIndex $preLimitTail";
- }
-
- if (isset($options['LIMIT']))
- $sql = $this->limitResult($sql, $options['LIMIT'],
- isset($options['OFFSET']) ? $options['OFFSET'] : false);
- $sql = "$sql $postLimitTail";
-
- if (isset($options['EXPLAIN'])) {
- $sql = 'EXPLAIN ' . $sql;
- }
- return $this->query( $sql, $fname );
- }
-
- /**
- * Determines whether a field exists in a table
- * Usually aborts on failure
- * If errors are explicitly ignored, returns NULL on failure
- */
- function fieldExists( $table, $field, $fname = 'Database::fieldExists' ) {
- $table = $this->tableName( $table );
- $sql = "SELECT TOP 1 * FROM $table";
- $res = $this->query( $sql, 'Database::fieldExists' );
-
- $found = false;
- while ( $row = $this->fetchArray( $res ) ) {
- if ( isset($row[$field]) ) {
- $found = true;
- break;
- }
- }
-
- $this->freeResult( $res );
- return $found;
- }
-
- /**
- * Get information about an index into an object
- * Returns false if the index does not exist
- */
- function indexInfo( $table, $index, $fname = 'Database::indexInfo' ) {
-
- throw new DBUnexpectedError( $this, 'Database::indexInfo called which is not supported yet' );
- return null;
-
- $table = $this->tableName( $table );
- $sql = 'SHOW INDEX FROM '.$table;
- $res = $this->query( $sql, $fname );
- if ( !$res ) {
- return null;
- }
-
- $result = array();
- while ( $row = $this->fetchObject( $res ) ) {
- if ( $row->Key_name == $index ) {
- $result[] = $row;
- }
- }
- $this->freeResult($res);
-
- return empty($result) ? false : $result;
- }
-
- /**
- * Query whether a given table exists
- */
- function tableExists( $table ) {
- $table = $this->tableName( $table );
- $res = $this->query( "SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = '$table'" );
- $exist = ($res->numRows() > 0);
- $this->freeResult($res);
- return $exist;
- }
-
- /**
- * mysql_fetch_field() wrapper
- * Returns false if the field doesn't exist
- *
- * @param $table
- * @param $field
- */
- function fieldInfo( $table, $field ) {
- $table = $this->tableName( $table );
- $res = $this->query( "SELECT TOP 1 * FROM $table" );
- $n = mssql_num_fields( $res->result );
- for( $i = 0; $i < $n; $i++ ) {
- $meta = mssql_fetch_field( $res->result, $i );
- if( $field == $meta->name ) {
- return new MSSQLField($meta);
- }
- }
- return false;
- }
-
- /**
- * mysql_field_type() wrapper
- */
- function fieldType( $res, $index ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- return mssql_field_type( $res, $index );
- }
-
- /**
- * INSERT wrapper, inserts an array into a table
- *
- * $a may be a single associative array, or an array of these with numeric keys, for
- * multi-row insert.
- *
- * Usually aborts on failure
- * If errors are explicitly ignored, returns success
- *
- * Same as parent class implementation except that it removes primary key from column lists
- * because MSSQL doesn't support writing nulls to IDENTITY (AUTO_INCREMENT) columns
- */
- function insert( $table, $a, $fname = 'Database::insert', $options = array() ) {
- # No rows to insert, easy just return now
- if ( !count( $a ) ) {
- return true;
- }
- $table = $this->tableName( $table );
- if ( !is_array( $options ) ) {
- $options = array( $options );
- }
-
- # todo: need to record primary keys at table create time, and remove NULL assignments to them
- if ( isset( $a[0] ) && is_array( $a[0] ) ) {
- $multi = true;
- $keys = array_keys( $a[0] );
-# if (ereg('_id$',$keys[0])) {
- foreach ($a as $i) {
- if (is_null($i[$keys[0]])) unset($i[$keys[0]]); # remove primary-key column from multiple insert lists if empty value
- }
-# }
- $keys = array_keys( $a[0] );
- } else {
- $multi = false;
- $keys = array_keys( $a );
-# if (ereg('_id$',$keys[0]) && empty($a[$keys[0]])) unset($a[$keys[0]]); # remove primary-key column from insert list if empty value
- if (is_null($a[$keys[0]])) unset($a[$keys[0]]); # remove primary-key column from insert list if empty value
- $keys = array_keys( $a );
- }
-
- # handle IGNORE option
- # example:
- # MySQL: INSERT IGNORE INTO user_groups (ug_user,ug_group) VALUES ('1','sysop')
- # MSSQL: IF NOT EXISTS (SELECT * FROM user_groups WHERE ug_user = '1') INSERT INTO user_groups (ug_user,ug_group) VALUES ('1','sysop')
- $ignore = in_array('IGNORE',$options);
-
- # remove IGNORE from options list
- if ($ignore) {
- $oldoptions = $options;
- $options = array();
- foreach ($oldoptions as $o) if ($o != 'IGNORE') $options[] = $o;
- }
-
- $keylist = implode(',', $keys);
- $sql = 'INSERT '.implode(' ', $options)." INTO $table (".implode(',', $keys).') VALUES ';
- if ($multi) {
- if ($ignore) {
- # If multiple and ignore, then do each row as a separate conditional insert
- foreach ($a as $row) {
- $prival = $row[$keys[0]];
- $sql = "IF NOT EXISTS (SELECT * FROM $table WHERE $keys[0] = '$prival') $sql";
- if (!$this->query("$sql (".$this->makeListWithoutNulls($row).')', $fname)) return false;
- }
- return true;
- } else {
- $first = true;
- foreach ($a as $row) {
- if ($first) $first = false; else $sql .= ',';
- $sql .= '('.$this->makeListWithoutNulls($row).')';
- }
- }
- } else {
- if ($ignore) {
- $prival = $a[$keys[0]];
- $sql = "IF NOT EXISTS (SELECT * FROM $table WHERE $keys[0] = '$prival') $sql";
- }
- $sql .= '('.$this->makeListWithoutNulls($a).')';
- }
- return (bool)$this->query( $sql, $fname );
- }
-
- /**
- * MSSQL doesn't allow implicit casting of NULL's into non-null values for NOT NULL columns
- * for now I've just converted the NULL's in the lists for updates and inserts into empty strings
- * which get implicitly casted to 0 for numeric columns
- * NOTE: the set() method above converts NULL to empty string as well but not via this method
- */
- function makeListWithoutNulls($a, $mode = LIST_COMMA) {
- return str_replace("NULL","''",$this->makeList($a,$mode));
- }
-
- /**
- * UPDATE wrapper, takes a condition array and a SET array
- *
- * @param $table String: The table to UPDATE
- * @param $values Array: An array of values to SET
- * @param $conds Array: An array of conditions (WHERE). Use '*' to update all rows.
- * @param $fname String: The Class::Function calling this function
- * (for the log)
- * @param $options Array: An array of UPDATE options, can be one or
- * more of IGNORE, LOW_PRIORITY
- * @return bool
- */
- function update( $table, $values, $conds, $fname = 'Database::update', $options = array() ) {
- $table = $this->tableName( $table );
- $opts = $this->makeUpdateOptions( $options );
- $sql = "UPDATE $opts $table SET " . $this->makeListWithoutNulls( $values, LIST_SET );
- if ( $conds != '*' ) {
- $sql .= " WHERE " . $this->makeList( $conds, LIST_AND );
- }
- return $this->query( $sql, $fname );
- }
-
- /**
- * Make UPDATE options for the Database::update function
- *
- * @private
- * @param $options Array: The options passed to Database::update
- * @return string
- */
- function makeUpdateOptions( $options ) {
- if( !is_array( $options ) ) {
- $options = array( $options );
- }
- $opts = array();
- if ( in_array( 'LOW_PRIORITY', $options ) )
- $opts[] = $this->lowPriorityOption();
- if ( in_array( 'IGNORE', $options ) )
- $opts[] = 'IGNORE';
- return implode(' ', $opts);
- }
-
- /**
- * Change the current database
- */
- function selectDB( $db ) {
- $this->mDBname = $db;
- return mssql_select_db( $db, $this->mConn );
- }
-
- /**
- * MSSQL has a problem with the backtick quoting, so all this does is ensure the prefix is added exactly once
- */
- function tableName($name) {
- return strpos($name, $this->mTablePrefix) === 0 ? $name : "{$this->mTablePrefix}$name";
- }
-
- /**
- * MSSQL doubles quotes instead of escaping them
- * @param $s String to be slashed.
- * @return string slashed string.
- */
- function strencode($s) {
- return str_replace("'","''",$s);
- }
-
- /**
- * REPLACE query wrapper
- * PostgreSQL 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
- *
- * @todo migrate comment to phodocumentor format
- */
- function replace( $table, $uniqueIndexes, $rows, $fname = 'Database::replace' ) {
- $table = $this->tableName( $table );
-
- # Single row case
- if ( !is_array( reset( $rows ) ) ) {
- $rows = array( $rows );
- }
-
- $sql = "REPLACE INTO $table (" . implode( ',', array_keys( $rows[0] ) ) .') VALUES ';
- $first = true;
- foreach ( $rows as $row ) {
- if ( $first ) {
- $first = false;
- } else {
- $sql .= ',';
- }
- $sql .= '(' . $this->makeList( $row ) . ')';
- }
- return $this->query( $sql, $fname );
- }
-
- /**
- * DELETE where the condition is a join
- * MySQL does this with a multi-table DELETE syntax, PostgreSQL does it with sub-selects
- *
- * For safety, an empty $conds will not delete everything. If you want to delete all rows where the
- * join condition matches, set $conds='*'
- *
- * DO NOT put the join condition in $conds
- *
- * @param $delTable String: The table to delete from.
- * @param $joinTable String: The other table.
- * @param $delVar String: The variable to join on, in the first table.
- * @param $joinVar String: The variable to join on, in the second table.
- * @param $conds Array: Condition array of field names mapped to variables, ANDed together in the WHERE clause
- * @param $fname String: Calling function name
- */
- function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = 'Database::deleteJoin' ) {
- if ( !$conds ) {
- throw new DBUnexpectedError( $this, 'Database::deleteJoin() called with empty $conds' );
- }
-
- $delTable = $this->tableName( $delTable );
- $joinTable = $this->tableName( $joinTable );
- $sql = "DELETE $delTable FROM $delTable, $joinTable WHERE $delVar=$joinVar ";
- if ( $conds != '*' ) {
- $sql .= ' AND ' . $this->makeList( $conds, LIST_AND );
- }
-
- return $this->query( $sql, $fname );
- }
-
- /**
- * Returns the size of a text field, or -1 for "unlimited"
- */
- function textFieldSize( $table, $field ) {
- $table = $this->tableName( $table );
- $sql = "SELECT TOP 1 * FROM $table;";
- $res = $this->query( $sql, 'Database::textFieldSize' );
- $row = $this->fetchObject( $res );
- $this->freeResult( $res );
-
- $m = array();
- if ( preg_match( '/\((.*)\)/', $row->Type, $m ) ) {
- $size = $m[1];
- } else {
- $size = -1;
- }
- return $size;
- }
-
- /**
- * @return string Returns the text of the low priority option if it is supported, or a blank string otherwise
- */
- function lowPriorityOption() {
- return 'LOW_PRIORITY';
- }
-
- /**
- * INSERT SELECT wrapper
- * $varMap must be an associative array of the form array( 'dest1' => 'source1', ...)
- * Source items may be literals rather than field names, but strings should be quoted with Database::addQuotes()
- * $conds may be "*" to copy the whole table
- * srcTable may be an array of tables.
- */
- function insertSelect( $destTable, $srcTable, $varMap, $conds, $fname = 'Database::insertSelect',
- $insertOptions = array(), $selectOptions = array() )
- {
- $destTable = $this->tableName( $destTable );
- if ( is_array( $insertOptions ) ) {
- $insertOptions = implode( ' ', $insertOptions );
- }
- if( !is_array( $selectOptions ) ) {
- $selectOptions = array( $selectOptions );
- }
- list( $startOpts, $useIndex, $tailOpts ) = $this->makeSelectOptions( $selectOptions );
- if( is_array( $srcTable ) ) {
- $srcTable = implode( ',', array_map( array( &$this, 'tableName' ), $srcTable ) );
- } else {
- $srcTable = $this->tableName( $srcTable );
- }
- $sql = "INSERT $insertOptions INTO $destTable (" . implode( ',', array_keys( $varMap ) ) . ')' .
- " SELECT $startOpts " . implode( ',', $varMap ) .
- " FROM $srcTable $useIndex ";
- if ( $conds != '*' ) {
- $sql .= ' WHERE ' . $this->makeList( $conds, LIST_AND );
- }
- $sql .= " $tailOpts";
- return $this->query( $sql, $fname );
- }
-
- /**
- * Construct a LIMIT query with optional offset
- * This is used for query pages
- * $sql string SQL query we will append the limit to
- * $limit integer the SQL limit
- * $offset integer the SQL offset (default false)
- */
- function limitResult($sql, $limit, $offset=false) {
- if( !is_numeric($limit) ) {
- throw new DBUnexpectedError( $this, "Invalid non-numeric limit passed to limitResult()\n" );
- }
- if ($offset) {
- throw new DBUnexpectedError( $this, 'Database::limitResult called with non-zero offset which is not supported yet' );
- } else {
- $sql = ereg_replace("^SELECT", "SELECT TOP $limit", $sql);
- }
- return $sql;
- }
-
- /**
- * Should determine if the last failure was due to a deadlock
- * @return bool
- */
- function wasDeadlock() {
- return $this->lastErrno() == 1205;
- }
-
- /**
- * Return MW-style timestamp used for MySQL schema
- */
- function timestamp( $ts=0 ) {
- return wfTimestamp(TS_MW,$ts);
- }
-
- /**
- * Local database timestamp format or null
- */
- function timestampOrNull( $ts = null ) {
- if( is_null( $ts ) ) {
- return null;
- } else {
- return $this->timestamp( $ts );
- }
- }
-
- /**
- * @return string wikitext of a link to the server software's web site
- */
- function getSoftwareLink() {
- return "[http://www.microsoft.com/sql/default.mspx Microsoft SQL Server 2005 Home]";
- }
-
- /**
- * @return string Version information from the database
- */
- function getServerVersion() {
- $row = mssql_fetch_row(mssql_query('select @@VERSION'));
- return ereg("^(.+[0-9]+\\.[0-9]+\\.[0-9]+) ",$row[0],$m) ? $m[1] : $row[0];
- }
-
- function limitResultForUpdate($sql, $num) {
- return $sql;
- }
-
- /**
- * How lagged is this slave?
- */
- public function getLag() {
- return 0;
- }
-
- /**
- * Called by the installer script
- * - this is the same way as DatabasePostgresql.php, MySQL reads in tables.sql and interwiki.sql using dbsource (which calls db->sourceFile)
- */
- public function setup_database() {
- global $IP,$wgDBTableOptions;
- $wgDBTableOptions = '';
- $mysql_tmpl = "$IP/maintenance/tables.sql";
- $mysql_iw = "$IP/maintenance/interwiki.sql";
- $mssql_tmpl = "$IP/maintenance/mssql/tables.sql";
-
- # Make an MSSQL template file if it doesn't exist (based on the same one MySQL uses to create a new wiki db)
- if (!file_exists($mssql_tmpl)) { # todo: make this conditional again
- $sql = file_get_contents($mysql_tmpl);
- $sql = preg_replace('/^\s*--.*?$/m','',$sql); # strip comments
- $sql = preg_replace('/^\s*(UNIQUE )?(INDEX|KEY|FULLTEXT).+?$/m', '', $sql); # These indexes should be created with a CREATE INDEX query
- $sql = preg_replace('/(\sKEY) [^\(]+\(/is', '$1 (', $sql); # "KEY foo (foo)" should just be "KEY (foo)"
- $sql = preg_replace('/(varchar\([0-9]+\))\s+binary/i', '$1', $sql); # "varchar(n) binary" cannot be followed by "binary"
- $sql = preg_replace('/(var)?binary\(([0-9]+)\)/ie', '"varchar(".strlen(pow(2,$2)).")"', $sql); # use varchar(chars) not binary(bits)
- $sql = preg_replace('/ (var)?binary/i', ' varchar', $sql); # use varchar not binary
- $sql = preg_replace('/(varchar\([0-9]+\)(?! N))/', '$1 NULL', $sql); # MSSQL complains if NULL is put into a varchar
- #$sql = preg_replace('/ binary/i',' varchar',$sql); # MSSQL binary's can't be assigned with strings, so use varchar's instead
- #$sql = preg_replace('/(binary\([0-9]+\) (NOT NULL )?default) [\'"].*?[\'"]/i','$1 0',$sql); # binary default cannot be string
- $sql = preg_replace('/[a-z]*(blob|text)([ ,])/i', 'text$2', $sql); # no BLOB types in MSSQL
- $sql = preg_replace('/\).+?;/',');', $sql); # remove all table options
- $sql = preg_replace('/ (un)?signed/i', '', $sql);
- $sql = preg_replace('/ENUM\(.+?\)/','TEXT',$sql); # Make ENUM's into TEXT's
- $sql = str_replace(' bool ', ' bit ', $sql);
- $sql = str_replace('auto_increment', 'IDENTITY(1,1)', $sql);
- #$sql = preg_replace('/NOT NULL(?! IDENTITY)/', 'NULL', $sql); # Allow NULL's for non IDENTITY columns
-
- # Tidy up and write file
- $sql = preg_replace('/,\s*\)/s', "\n)", $sql); # Remove spurious commas left after INDEX removals
- $sql = preg_replace('/^\s*^/m', '', $sql); # Remove empty lines
- $sql = preg_replace('/;$/m', ";\n", $sql); # Separate each statement with an empty line
- file_put_contents($mssql_tmpl, $sql);
- }
-
- # Parse the MSSQL template replacing inline variables such as /*$wgDBprefix*/
- $err = $this->sourceFile($mssql_tmpl);
- if ($err !== true) $this->reportQueryError($err,0,$sql,__FUNCTION__);
-
- # Use DatabasePostgres's code to populate interwiki from MySQL template
- $f = fopen($mysql_iw,'r');
- if ($f == false) dieout("<li>Could not find the interwiki.sql file");
- $sql = "INSERT INTO {$this->mTablePrefix}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])");
- }
- }
-
- public function getSearchEngine() {
- return "SearchEngineDummy";
- }
-}
-
-/**
- * @ingroup Database
- */
-class MSSQLField extends MySQLField {
-
- function __construct() {
- }
-
- static function fromText($db, $table, $field) {
- $n = new MSSQLField;
- $n->name = $field;
- $n->tablename = $table;
- return $n;
- }
-
-} // end DatabaseMssql class
-
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