/**
* @ingroup Database
*/
-class DatabaseSqlite extends Database {
+class DatabaseSqlite extends DatabaseBase {
var $mAffectedRows;
var $mLastResult;
var $mDatabaseFile;
+ var $mName;
/**
- * Constructor
+ * Constructor.
+ * Parameters $server, $user and $password are not used.
*/
- function __construct($server = false, $user = false, $password = false, $dbName = false, $failFunction = false, $flags = 0) {
- global $wgOut,$wgSQLiteDataDir, $wgSQLiteDataDirMode;
- if ("$wgSQLiteDataDir" == '') $wgSQLiteDataDir = dirname($_SERVER['DOCUMENT_ROOT']).'/data';
- if (!is_dir($wgSQLiteDataDir)) wfMkdirParents( $wgSQLiteDataDir, $wgSQLiteDataDirMode );
+ function __construct( $server = false, $user = false, $password = false, $dbName = false, $failFunction = false, $flags = 0 ) {
$this->mFailFunction = $failFunction;
$this->mFlags = $flags;
- $this->mDatabaseFile = "$wgSQLiteDataDir/$dbName.sqlite";
- $this->open($server, $user, $password, $dbName);
+ $this->mName = $dbName;
+ $this->open( $server, $user, $password, $dbName );
+ }
+
+ function getType() {
+ return 'sqlite';
}
/**
- * todo: check if these should be true like parent class
+ * @todo: check if it should be true like parent class
*/
function implicitGroupby() { return false; }
- function implicitOrderby() { return false; }
- static function newFromParams($server, $user, $password, $dbName, $failFunction = false, $flags = 0) {
- return new DatabaseSqlite($server, $user, $password, $dbName, $failFunction, $flags);
+ static function newFromParams( $server, $user, $password, $dbName, $failFunction = false, $flags = 0 ) {
+ return new DatabaseSqlite( $server, $user, $password, $dbName, $failFunction, $flags );
}
/** Open an SQLite database and return a resource handle to it
* NOTE: only $dbName is used, the other parameters are irrelevant for SQLite databases
*/
- function open($server,$user,$pass,$dbName) {
- $this->mConn = false;
- if ($dbName) {
- $file = $this->mDatabaseFile;
- try {
- if ( $this->mFlags & DBO_PERSISTENT ) {
- $this->mConn = new PDO( "sqlite:$file", $user, $pass,
- array( PDO::ATTR_PERSISTENT => true ) );
- } else {
- $this->mConn = new PDO( "sqlite:$file", $user, $pass );
- }
- } catch ( PDOException $e ) {
- $err = $e->getMessage();
- }
- if ( $this->mConn === false ) {
- wfDebug( "DB connection error: $err\n" );
- if ( !$this->mFailFunction ) {
- throw new DBConnectionError( $this, $err );
- } else {
- return false;
- }
+ function open( $server, $user, $pass, $dbName ) {
+ global $wgSQLiteDataDir;
- }
- $this->mOpened = $this->mConn;
- # set error codes only, don't raise exceptions
- $this->mConn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT );
+ $fileName = self::generateFileName( $wgSQLiteDataDir, $dbName );
+ if ( !is_readable( $fileName ) ) {
+ throw new DBConnectionError( $this, "SQLite database not accessible" ); $this->mConn = false;
}
+ $this->openFile( $fileName );
return $this->mConn;
}
+ /**
+ * Opens a database file
+ * @return SQL connection or false if failed
+ */
+ function openFile( $fileName ) {
+ $this->mDatabaseFile = $fileName;
+ try {
+ if ( $this->mFlags & DBO_PERSISTENT ) {
+ $this->mConn = new PDO( "sqlite:$fileName", '', '',
+ array( PDO::ATTR_PERSISTENT => true ) );
+ } else {
+ $this->mConn = new PDO( "sqlite:$fileName", '', '' );
+ }
+ } catch ( PDOException $e ) {
+ $err = $e->getMessage();
+ }
+ if ( $this->mConn === false ) {
+ wfDebug( "DB connection error: $err\n" );
+ if ( !$this->mFailFunction ) {
+ throw new DBConnectionError( $this, $err );
+ } else {
+ return false;
+ }
+
+ }
+ $this->mOpened = !!$this->mConn;
+ # set error codes only, don't raise exceptions
+ if ( $this->mOpened ) {
+ $this->mConn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT );
+ return true;
+ }
+ }
+
/**
* Close an SQLite database
*/
function close() {
$this->mOpened = false;
- if (is_object($this->mConn)) {
- if ($this->trxLevel()) $this->immediateCommit();
+ if ( is_object( $this->mConn ) ) {
+ if ( $this->trxLevel() ) $this->commit();
$this->mConn = null;
}
return true;
}
+ /**
+ * Generates a database file name. Explicitly public for installer.
+ * @param $dir String: Directory where database resides
+ * @param $dbName String: Database name
+ * @return String
+ */
+ public static function generateFileName( $dir, $dbName ) {
+ return "$dir/$dbName.sqlite";
+ }
+
+ /**
+ * Returns version of currently supported SQLite fulltext search module or false if none present.
+ * @return String
+ */
+ function getFulltextSearchModule() {
+ $table = 'dummy_search_test';
+ $this->query( "DROP TABLE IF EXISTS $table", __METHOD__ );
+ if ( $this->query( "CREATE VIRTUAL TABLE $table USING FTS3(dummy_field)", __METHOD__, true ) ) {
+ $this->query( "DROP TABLE IF EXISTS $table", __METHOD__ );
+ return 'FTS3';
+ }
+ return false;
+ }
+
/**
* SQLite doesn't allow buffered results or data seeking etc, so we'll use fetchAll as the result
*/
- function doQuery($sql) {
- $res = $this->mConn->query($sql);
- if ($res === false) $this->reportQueryError($this->lastError(),$this->lastErrno(),$sql,__FUNCTION__);
- else {
+ function doQuery( $sql ) {
+ $res = $this->mConn->query( $sql );
+ if ( $res === false ) {
+ return false;
+ } else {
$r = $res instanceof ResultWrapper ? $res->result : $res;
$this->mAffectedRows = $r->rowCount();
- $res = new ResultWrapper($this,$r->fetchAll());
+ $res = new ResultWrapper( $this, $r->fetchAll() );
}
return $res;
}
- function freeResult(&$res) {
- if ($res instanceof ResultWrapper) $res->result = NULL; else $res = NULL;
+ function freeResult( $res ) {
+ if ( $res instanceof ResultWrapper )
+ $res->result = null;
+ else
+ $res = null;
}
- function fetchObject(&$res) {
- if ($res instanceof ResultWrapper) $r =& $res->result; else $r =& $res;
- $cur = current($r);
- if (is_array($cur)) {
- next($r);
+ function fetchObject( $res ) {
+ if ( $res instanceof ResultWrapper )
+ $r =& $res->result;
+ else
+ $r =& $res;
+
+ $cur = current( $r );
+ if ( is_array( $cur ) ) {
+ next( $r );
$obj = new stdClass;
- foreach ($cur as $k => $v) if (!is_numeric($k)) $obj->$k = $v;
+ foreach ( $cur as $k => $v )
+ if ( !is_numeric( $k ) )
+ $obj->$k = $v;
+
return $obj;
}
return false;
}
- function fetchRow(&$res) {
- if ($res instanceof ResultWrapper) $r =& $res->result; else $r =& $res;
- $cur = current($r);
- if (is_array($cur)) {
- next($r);
+ function fetchRow( $res ) {
+ if ( $res instanceof ResultWrapper )
+ $r =& $res->result;
+ else
+ $r =& $res;
+
+ $cur = current( $r );
+ if ( is_array( $cur ) ) {
+ next( $r );
return $cur;
}
return false;
/**
* The PDO::Statement class implements the array interface so count() will work
*/
- function numRows(&$res) {
+ function numRows( $res ) {
$r = $res instanceof ResultWrapper ? $res->result : $res;
- return count($r);
+ return count( $r );
}
- function numFields(&$res) {
+ function numFields( $res ) {
$r = $res instanceof ResultWrapper ? $res->result : $res;
- return is_array($r) ? count($r[0]) : 0;
+ return is_array( $r ) ? count( $r[0] ) : 0;
}
- function fieldName(&$res,$n) {
+ function fieldName( $res, $n ) {
$r = $res instanceof ResultWrapper ? $res->result : $res;
- if (is_array($r)) {
- $keys = array_keys($r[0]);
+ if ( is_array( $r ) ) {
+ $keys = array_keys( $r[0] );
return $keys[$n];
}
return false;
/**
* Use MySQL's naming (accounts for prefix etc) but remove surrounding backticks
*/
- function tableName($name) {
- return str_replace('`','',parent::tableName($name));
+ function tableName( $name ) {
+ return str_replace( '`', '', parent::tableName( $name ) );
+ }
+
+ /**
+ * Index names have DB scope
+ */
+ function indexName( $index ) {
+ return $index;
}
/**
return $this->mConn->lastInsertId();
}
- function dataSeek(&$res,$row) {
- if ($res instanceof ResultWrapper) $r =& $res->result; else $r =& $res;
- reset($r);
- if ($row > 0) for ($i = 0; $i < $row; $i++) next($r);
+ function dataSeek( $res, $row ) {
+ if ( $res instanceof ResultWrapper )
+ $r =& $res->result;
+ else
+ $r =& $res;
+ reset( $r );
+ if ( $row > 0 )
+ for ( $i = 0; $i < $row; $i++ )
+ next( $r );
}
function lastError() {
- if (!is_object($this->mConn)) return "Cannot return last error, no db connection";
+ if ( !is_object( $this->mConn ) )
+ return "Cannot return last error, no db connection";
$e = $this->mConn->errorInfo();
- return isset($e[2]) ? $e[2] : '';
+ return isset( $e[2] ) ? $e[2] : '';
}
function lastErrno() {
- if (!is_object($this->mConn)) return "Cannot return last error, no db connection";
- return $this->mConn->errorCode();
+ if ( !is_object( $this->mConn ) ) {
+ return "Cannot return last error, no db connection";
+ } else {
+ $info = $this->mConn->errorInfo();
+ return $info[1];
+ }
}
function affectedRows() {
/**
* Returns information about an index
+ * Returns false if the index does not exist
* - if errors are explicitly ignored, returns NULL on failure
*/
- function indexInfo($table, $index, $fname = 'Database::indexExists') {
- return false;
+ function indexInfo( $table, $index, $fname = 'DatabaseSqlite::indexExists' ) {
+ $sql = 'PRAGMA index_info(' . $this->addQuotes( $this->indexName( $index ) ) . ')';
+ $res = $this->query( $sql, $fname );
+ if ( !$res ) {
+ return null;
+ }
+ if ( $res->numRows() == 0 ) {
+ return false;
+ }
+ $info = array();
+ foreach ( $res as $row ) {
+ $info[] = $row->name;
+ }
+ return $info;
}
- function indexUnique($table, $index, $fname = 'Database::indexUnique') {
- return false;
+ function indexUnique( $table, $index, $fname = 'DatabaseSqlite::indexUnique' ) {
+ $row = $this->selectRow( 'sqlite_master', '*',
+ array(
+ 'type' => 'index',
+ 'name' => $this->indexName( $index ),
+ ), $fname );
+ if ( !$row || !isset( $row->sql ) ) {
+ return null;
+ }
+
+ // $row->sql will be of the form CREATE [UNIQUE] INDEX ...
+ $indexPos = strpos( $row->sql, 'INDEX' );
+ if ( $indexPos === false ) {
+ return null;
+ }
+ $firstPart = substr( $row->sql, 0, $indexPos );
+ $options = explode( ' ', $firstPart );
+ return in_array( 'UNIQUE', $options );
}
/**
* Filter the options used in SELECT statements
*/
- function makeSelectOptions($options) {
- foreach ($options as $k => $v) if (is_numeric($k) && $v == 'FOR UPDATE') $options[$k] = '';
- return parent::makeSelectOptions($options);
+ function makeSelectOptions( $options ) {
+ foreach ( $options as $k => $v )
+ if ( is_numeric( $k ) && $v == 'FOR UPDATE' )
+ $options[$k] = '';
+ return parent::makeSelectOptions( $options );
}
/**
- * Based on MySQL method (parent) with some prior SQLite-sepcific adjustments
+ * Based on generic method (parent) with some prior SQLite-sepcific adjustments
*/
- function insert($table, $a, $fname = 'DatabaseSqlite::insert', $options = array()) {
- if (!count($a)) return true;
- if (!is_array($options)) $options = array($options);
+ function insert( $table, $a, $fname = 'DatabaseSqlite::insert', $options = array() ) {
+ if ( !count( $a ) ) return true;
+ if ( !is_array( $options ) ) $options = array( $options );
# SQLite uses OR IGNORE not just IGNORE
- foreach ($options as $k => $v) if ($v == 'IGNORE') $options[$k] = 'OR IGNORE';
+ foreach ( $options as $k => $v )
+ if ( $v == 'IGNORE' )
+ $options[$k] = 'OR IGNORE';
# SQLite can't handle multi-row inserts, so divide up into multiple single-row inserts
- if (isset($a[0]) && is_array($a[0])) {
+ if ( isset( $a[0] ) && is_array( $a[0] ) ) {
$ret = true;
- foreach ($a as $k => $v) if (!parent::insert($table,$v,"$fname/multi-row",$options)) $ret = false;
+ foreach ( $a as $k => $v )
+ if ( !parent::insert( $table, $v, "$fname/multi-row", $options ) )
+ $ret = false;
+ } else {
+ $ret = parent::insert( $table, $a, "$fname/single-row", $options );
}
- else $ret = parent::insert($table,$a,"$fname/single-row",$options);
return $ret;
}
- /**
- * SQLite does not have a "USE INDEX" clause, so return an empty string
- */
- function useIndexClause($index) {
- return '';
- }
+ function replace( $table, $uniqueIndexes, $rows, $fname = 'DatabaseSqlite::replace' ) {
+ if ( !count( $rows ) ) return true;
+
+ # SQLite can't handle multi-row replaces, so divide up into multiple single-row queries
+ if ( isset( $rows[0] ) && is_array( $rows[0] ) ) {
+ $ret = true;
+ foreach ( $rows as $k => $v )
+ if ( !parent::replace( $table, $uniqueIndexes, $v, "$fname/multi-row" ) )
+ $ret = false;
+ } else {
+ $ret = parent::replace( $table, $uniqueIndexes, $rows, "$fname/single-row" );
+ }
- # Returns the size of a text field, or -1 for "unlimited"
- function textFieldSize($table, $field) {
- return -1;
+ return $ret;
}
/**
- * No low priority option in SQLite
+ * Returns the size of a text field, or -1 for "unlimited"
+ * In SQLite this is SQLITE_MAX_LENGTH, by default 1GB. No way to query it though.
*/
- function lowPriorityOption() {
- return '';
+ function textFieldSize( $table, $field ) {
+ return - 1;
}
- /**
- * Returns an SQL expression for a simple conditional.
- * - uses CASE on SQLite
- */
- function conditional($cond, $trueVal, $falseVal) {
- return " (CASE WHEN $cond THEN $trueVal ELSE $falseVal END) ";
+ function unionSupportsOrderAndLimit() {
+ return false;
+ }
+
+ function unionQueries( $sqls, $all ) {
+ $glue = $all ? ' UNION ALL ' : ' UNION ';
+ return implode( $glue, $sqls );
}
function wasDeadlock() {
- return $this->lastErrno() == SQLITE_BUSY;
+ return $this->lastErrno() == 5; // SQLITE_BUSY
+ }
+
+ function wasErrorReissuable() {
+ return $this->lastErrno() == 17; // SQLITE_SCHEMA;
+ }
+
+ function wasReadOnlyError() {
+ return $this->lastErrno() == 8; // SQLITE_READONLY;
}
/**
* @return string Version information from the database
*/
function getServerVersion() {
- global $wgContLang;
- $ver = $this->mConn->getAttribute(PDO::ATTR_SERVER_VERSION);
- $size = $wgContLang->formatSize(filesize($this->mDatabaseFile));
- $file = basename($this->mDatabaseFile);
- return $ver." ($file: $size)";
+ $ver = $this->mConn->getAttribute( PDO::ATTR_SERVER_VERSION );
+ return $ver;
}
/**
* Query whether a given column exists in the mediawiki schema
*/
- function fieldExists($table, $field) { return true; }
+ function fieldExists( $table, $field, $fname = '' ) {
+ $info = $this->fieldInfo( $table, $field );
+ return (bool)$info;
+ }
- function fieldInfo($table, $field) { return SQLiteField::fromText($this, $table, $field); }
+ /**
+ * Get information about a given field
+ * Returns false if the field does not exist.
+ */
+ function fieldInfo( $table, $field ) {
+ $tableName = $this->tableName( $table );
+ $sql = 'PRAGMA table_info(' . $this->addQuotes( $tableName ) . ')';
+ $res = $this->query( $sql, __METHOD__ );
+ foreach ( $res as $row ) {
+ if ( $row->name == $field ) {
+ return new SQLiteField( $row, $tableName );
+ }
+ }
+ return false;
+ }
- function begin() {
- if ($this->mTrxLevel == 1) $this->commit();
+ function begin( $fname = '' ) {
+ if ( $this->mTrxLevel == 1 ) $this->commit();
$this->mConn->beginTransaction();
$this->mTrxLevel = 1;
}
- function commit() {
- if ($this->mTrxLevel == 0) return;
+ function commit( $fname = '' ) {
+ if ( $this->mTrxLevel == 0 ) return;
$this->mConn->commit();
$this->mTrxLevel = 0;
}
- function rollback() {
- if ($this->mTrxLevel == 0) return;
+ function rollback( $fname = '' ) {
+ if ( $this->mTrxLevel == 0 ) return;
$this->mConn->rollBack();
$this->mTrxLevel = 0;
}
- function limitResultForUpdate($sql, $num) {
- return $sql;
+ function limitResultForUpdate( $sql, $num ) {
+ return $this->limitResult( $sql, $num );
}
- function strencode($s) {
- return substr($this->addQuotes($s),1,-1);
+ function strencode( $s ) {
+ return substr( $this->addQuotes( $s ), 1, - 1 );
}
- function encodeBlob($b) {
+ function encodeBlob( $b ) {
return new Blob( $b );
}
- function decodeBlob($b) {
- if ($b instanceof Blob) {
+ function decodeBlob( $b ) {
+ if ( $b instanceof Blob ) {
$b = $b->fetch();
}
return $b;
}
- function addQuotes($s) {
+ function addQuotes( $s ) {
if ( $s instanceof Blob ) {
return "x'" . bin2hex( $s->fetch() ) . "'";
} else {
- return $this->mConn->quote($s);
+ return $this->mConn->quote( $s );
}
}
- function quote_ident($s) { return $s; }
-
- /**
- * For now, does nothing
- */
- function selectDB($db) { return true; }
-
- /**
- * not done
- */
- public function setTimeout($timeout) { return; }
+ function quote_ident( $s ) {
+ return $s;
+ }
- function ping() {
- wfDebug("Function ping() not written for SQLite yet");
- return true;
+ function buildLike() {
+ $params = func_get_args();
+ if ( count( $params ) > 0 && is_array( $params[0] ) ) {
+ $params = $params[0];
+ }
+ return parent::buildLike( $params ) . "ESCAPE '\' ";
}
/**
* - this is the same way PostgreSQL works, MySQL reads in tables.sql and interwiki.sql using dbsource (which calls db->sourceFile)
*/
public function setup_database() {
- global $IP,$wgSQLiteDataDir,$wgDBTableOptions;
- $wgDBTableOptions = '';
- $mysql_tmpl = "$IP/maintenance/tables.sql";
- $mysql_iw = "$IP/maintenance/interwiki.sql";
- $sqlite_tmpl = "$IP/maintenance/sqlite/tables.sql";
-
- # Make an SQLite template file if it doesn't exist (based on the same one MySQL uses to create a new wiki db)
- if (!file_exists($sqlite_tmpl)) {
- $sql = file_get_contents($mysql_tmpl);
- $sql = preg_replace('/^\s*--.*?$/m','',$sql); # strip comments
- $sql = preg_replace('/^\s*(UNIQUE)?\s*(PRIMARY)?\s*KEY.+?$/m','',$sql);
- $sql = preg_replace('/^\s*(UNIQUE )?INDEX.+?$/m','',$sql); # These indexes should be created with a CREATE INDEX query
- $sql = preg_replace('/^\s*FULLTEXT.+?$/m','',$sql); # Full text indexes
- $sql = preg_replace('/ENUM\(.+?\)/','TEXT',$sql); # Make ENUM's into TEXT's
- $sql = preg_replace('/binary\(\d+\)/','BLOB',$sql);
- $sql = preg_replace('/(TYPE|MAX_ROWS|AVG_ROW_LENGTH)=\w+/','',$sql);
- $sql = preg_replace('/,\s*\)/s',')',$sql); # removing previous items may leave a trailing comma
- $sql = str_replace('binary','',$sql);
- $sql = str_replace('auto_increment','PRIMARY KEY AUTOINCREMENT',$sql);
- $sql = str_replace(' unsigned','',$sql);
- $sql = str_replace(' int ',' INTEGER ',$sql);
- $sql = str_replace('NOT NULL','',$sql);
-
- # Tidy up and write file
- $sql = preg_replace('/^\s*^/m','',$sql); # Remove empty lines
- $sql = preg_replace('/;$/m',";\n",$sql); # Separate each statement with an empty line
- file_put_contents($sqlite_tmpl,$sql);
- }
+ global $IP;
- # Parse the SQLite template replacing inline variables such as /*$wgDBprefix*/
- $err = $this->sourceFile($sqlite_tmpl);
- if ($err !== true) $this->reportQueryError($err,0,$sql,__FUNCTION__);
+ # Process common MySQL/SQLite table definitions
+ $err = $this->sourceFile( "$IP/maintenance/tables.sql" );
+ if ( $err !== true ) {
+ echo " <b>FAILED</b></li>";
+ dieout( htmlspecialchars( $err ) );
+ }
+ echo " done.</li>";
# 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");
+ $f = fopen( "$IP/maintenance/interwiki.sql", 'r' );
+ if ( $f == false ) {
+ dieout( "Could not find the interwiki.sql file." );
+ }
+
$sql = "INSERT INTO interwiki(iw_prefix,iw_url,iw_local) VALUES ";
- while (!feof($f)) {
- $line = fgets($f,1024);
+ while ( !feof( $f ) ) {
+ $line = fgets( $f, 1024 );
$matches = array();
- if (!preg_match('/^\s*(\(.+?),(\d)\)/', $line, $matches)) continue;
- $this->query("$sql $matches[1],$matches[2])");
+ if ( !preg_match( '/^\s*(\(.+?),(\d)\)/', $line, $matches ) ) continue;
+ $this->query( "$sql $matches[1],$matches[2])" );
}
}
- /**
- * No-op lock functions
- */
- public function lock( $lockName, $method ) {
- return true;
- }
- public function unlock( $lockName, $method ) {
- return true;
- }
-
public function getSearchEngine() {
- return "SearchEngineDummy";
+ return "SearchSqlite";
}
/**
$function = array_shift( $args );
return call_user_func_array( $function, $args );
}
+
+ protected function replaceVars( $s ) {
+ $s = parent::replaceVars( $s );
+ if ( preg_match( '/^\s*(CREATE|ALTER) TABLE/i', $s ) ) {
+ // CREATE TABLE hacks to allow schema file sharing with MySQL
+
+ // binary/varbinary column type -> blob
+ $s = preg_replace( '/\b(var)?binary(\(\d+\))/i', 'BLOB', $s );
+ // no such thing as unsigned
+ $s = preg_replace( '/\b(un)?signed\b/i', '', $s );
+ // INT -> INTEGER
+ $s = preg_replace( '/\b(tiny|small|medium|big|)int(\([\s\d]*\)|\b)/i', 'INTEGER', $s );
+ // varchar -> TEXT
+ $s = preg_replace( '/\bvarchar\(\d+\)/i', 'TEXT', $s );
+ // TEXT normalization
+ $s = preg_replace( '/\b(tiny|medium|long)text\b/i', 'TEXT', $s );
+ // BLOB normalization
+ $s = preg_replace( '/\b(tiny|small|medium|long|)blob\b/i', 'BLOB', $s );
+ // BOOL -> INTEGER
+ $s = preg_replace( '/\bbool(ean)?\b/i', 'INTEGER', $s );
+ // DATETIME -> TEXT
+ $s = preg_replace( '/\b(datetime|timestamp)\b/i', 'TEXT', $s );
+ // No ENUM type
+ $s = preg_replace( '/enum\([^)]*\)/i', 'BLOB', $s );
+ // binary collation type -> nothing
+ $s = preg_replace( '/\bbinary\b/i', '', $s );
+ // auto_increment -> autoincrement
+ $s = preg_replace( '/\bauto_increment\b/i', 'AUTOINCREMENT', $s );
+ // No explicit options
+ $s = preg_replace( '/\)[^);]*(;?)\s*$/', ')\1', $s );
+ } elseif ( preg_match( '/^\s*CREATE (\s*(?:UNIQUE|FULLTEXT)\s+)?INDEX/i', $s ) ) {
+ // No truncated indexes
+ $s = preg_replace( '/\(\d+\)/', '', $s );
+ // No FULLTEXT
+ $s = preg_replace( '/\bfulltext\b/i', '', $s );
+ }
+ return $s;
+ }
+
+ /*
+ * Build a concatenation list to feed into a SQL query
+ */
+ function buildConcat( $stringList ) {
+ return '(' . implode( ') || (', $stringList ) . ')';
+ }
+
+ function duplicateTableStructure( $oldName, $newName, $temporary = false, $fname = 'DatabaseSqlite::duplicateTableStructure' ) {
+ $res = $this->query( "SELECT sql FROM sqlite_master WHERE tbl_name='$oldName' AND type='table'", $fname );
+ $obj = $this->fetchObject( $res );
+ if ( !$obj ) {
+ throw new MWException( "Couldn't retrieve structure for table $oldName" );
+ }
+ $sql = $obj->sql;
+ $sql = preg_replace( '/\b' . preg_quote( $oldName ) . '\b/', $newName, $sql, 1 );
+ return $this->query( $sql, $fname );
+ }
+
+} // end DatabaseSqlite class
+
+/**
+ * This class allows simple acccess to a SQLite database independently from main database settings
+ * @ingroup Database
+ */
+class DatabaseSqliteStandalone extends DatabaseSqlite {
+ public function __construct( $fileName, $flags = 0 ) {
+ $this->mFlags = $flags;
+ $this->openFile( $fileName );
+ }
}
/**
* @ingroup Database
*/
-class SQLiteField extends MySQLField {
+class SQLiteField {
+ private $info, $tableName;
+ function __construct( $info, $tableName ) {
+ $this->info = $info;
+ $this->tableName = $tableName;
+ }
- function __construct() {
+ function name() {
+ return $this->info->name;
}
- static function fromText($db, $table, $field) {
- $n = new SQLiteField;
- $n->name = $field;
- $n->tablename = $table;
- return $n;
+ function tableName() {
+ return $this->tableName;
}
-} // end DatabaseSqlite class
+ function defaultValue() {
+ if ( is_string( $this->info->dflt_value ) ) {
+ // Typically quoted
+ if ( preg_match( '/^\'(.*)\'$', $this->info->dflt_value ) ) {
+ return str_replace( "''", "'", $this->info->dflt_value );
+ }
+ }
+ return $this->info->dflt_value;
+ }
+
+ function maxLength() {
+ return -1;
+ }
+
+ function nullable() {
+ // SQLite dynamic types are always nullable
+ return true;
+ }
+
+ # isKey(), isMultipleKey() not implemented, MySQL-specific concept.
+ # Suggest removal from base class [TS]
+
+ function type() {
+ return $this->info->type;
+ }
+} // end SQLiteField
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