/**
* @ingroup Database
*/
-class DatabaseSqlite extends Database {
+class DatabaseSqlite extends DatabaseBase {
var $mAffectedRows;
var $mLastResult;
/**
* Constructor
*/
- function __construct($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 ) {
+ global $wgSQLiteDataDir;
$this->mFailFunction = $failFunction;
$this->mFlags = $flags;
$this->mDatabaseFile = "$wgSQLiteDataDir/$dbName.sqlite";
+ if( !is_readable( $this->mDatabaseFile ) )
+ throw new DBConnectionError( $this, "SQLite database not accessible" );
$this->mName = $dbName;
- $this->open($server, $user, $password, $dbName);
+ $this->open( $server, $user, $password, $dbName );
}
/**
function implicitGroupby() { return false; }
function implicitOrderby() { return false; }
- static function newFromParams($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) {
+ function open( $server, $user, $pass, $dbName ) {
$this->mConn = false;
- if ($dbName) {
+ if ( $dbName ) {
$file = $this->mDatabaseFile;
try {
if ( $this->mFlags & DBO_PERSISTENT ) {
- $this->mConn = new PDO( "sqlite:$file", $user, $pass,
+ $this->mConn = new PDO( "sqlite:$file", $user, $pass,
array( PDO::ATTR_PERSISTENT => true ) );
} else {
$this->mConn = new PDO( "sqlite:$file", $user, $pass );
}
$this->mOpened = $this->mConn;
# set error codes only, don't raise exceptions
- $this->mConn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT );
+ $this->mConn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT );
}
return $this->mConn;
}
*/
function close() {
$this->mOpened = false;
- if (is_object($this->mConn)) {
- if ($this->trxLevel()) $this->immediateCommit();
+ if ( is_object( $this->mConn ) ) {
+ if ( $this->trxLevel() ) $this->immediateCommit();
$this->mConn = null;
}
return true;
/**
* SQLite doesn't allow buffered results or data seeking etc, so we'll use fetchAll as the result
*/
- function doQuery($sql) {
- $res = $this->mConn->query($sql);
- if ($res === false) {
+ 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);
+ 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;
+ if ( $res instanceof ResultWrapper )
+ $r =& $res->result;
+ else
+ $r =& $res;
+
$cur = current($r);
if (is_array($cur)) {
next($r);
/**
* 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 ) );
}
/**
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)) {
+ if ( !is_object( $this->mConn ) ) {
return "Cannot return last error, no db connection";
} else {
$info = $this->mConn->errorInfo();
* Returns false if the index does not exist
* - if errors are explicitly ignored, returns NULL on failure
*/
- function indexInfo($table, $index, $fname = 'Database::indexExists') {
+ function indexInfo( $table, $index, $fname = 'DatabaseSqlite::indexExists' ) {
$sql = 'PRAGMA index_info(' . $this->addQuotes( $this->indexName( $index ) ) . ')';
$res = $this->query( $sql, $fname );
if ( !$res ) {
return $info;
}
- function indexUnique($table, $index, $fname = 'Database::indexUnique') {
- $row = $this->selectRow( 'sqlite_master', '*',
+ function indexUnique( $table, $index, $fname = 'DatabaseSqlite::indexUnique' ) {
+ $row = $this->selectRow( 'sqlite_master', '*',
array(
'type' => 'index',
'name' => $this->indexName( $index ),
/**
* Filter the options used in SELECT statements
*/
- function makeSelectOptions($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( $options );
}
/**
* Based on MySQL method (parent) with some prior SQLite-sepcific adjustments
*/
- function insert($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 '';
- }
-
/**
* 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 textFieldSize($table, $field) {
- return -1;
+ function textFieldSize( $table, $field ) {
+ return - 1;
}
- /**
- * No low priority option in SQLite
- */
- function lowPriorityOption() {
- return '';
+ function unionSupportsOrderAndLimit() {
+ return false;
}
- /**
- * Returns an SQL expression for a simple conditional.
- * - uses CASE on SQLite
- */
- function conditional($cond, $trueVal, $falseVal) {
- return " (CASE WHEN $cond THEN $trueVal ELSE $falseVal END) ";
+ function unionQueries( $sqls, $all ) {
+ $glue = $all ? ' UNION ALL ' : ' UNION ';
+ return implode( $glue, $sqls );
}
function wasDeadlock() {
return $this->lastErrno() == SQLITE_SCHEMA;
}
+ function wasReadOnlyError() {
+ return $this->lastErrno() == SQLITE_READONLY;
+ }
+
/**
* @return string wikitext of a link to the server software's web site
*/
* @return string Version information from the database
*/
function getServerVersion() {
- global $wgContLang;
- $ver = $this->mConn->getAttribute(PDO::ATTR_SERVER_VERSION);
+ $ver = $this->mConn->getAttribute( PDO::ATTR_SERVER_VERSION );
return $ver;
}
/**
* Query whether a given column exists in the mediawiki schema
*/
- function fieldExists($table, $field, $fname = '') {
+ function fieldExists( $table, $field, $fname = '' ) {
$info = $this->fieldInfo( $table, $field );
return (bool)$info;
}
* Get information about a given field
* Returns false if the field does not exist.
*/
- function fieldInfo($table, $field) {
+ function fieldInfo( $table, $field ) {
$tableName = $this->tableName( $table );
$sql = 'PRAGMA table_info(' . $this->addQuotes( $tableName ) . ')';
$res = $this->query( $sql, __METHOD__ );
}
function begin( $fname = '' ) {
- if ($this->mTrxLevel == 1) $this->commit();
+ if ( $this->mTrxLevel == 1 ) $this->commit();
$this->mConn->beginTransaction();
$this->mTrxLevel = 1;
}
function commit( $fname = '' ) {
- if ($this->mTrxLevel == 0) return;
+ if ( $this->mTrxLevel == 0 ) return;
$this->mConn->commit();
$this->mTrxLevel = 0;
}
function rollback( $fname = '' ) {
- if ($this->mTrxLevel == 0) return;
+ if ( $this->mTrxLevel == 0 ) return;
$this->mConn->rollBack();
$this->mTrxLevel = 0;
}
- function limitResultForUpdate($sql, $num) {
+ 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 $s; }
-
- /**
- * Not possible in SQLite
- * We have ATTACH_DATABASE but that requires database selectors before the
- * table names and in any case is really a different concept to MySQL's USE
- */
- function selectDB($db) {
- if ( $db != $this->mName ) {
- throw new MWException( 'selectDB is not implemented in SQLite' );
- }
- }
-
- /**
- * not done
- */
- public function setTimeout($timeout) { return; }
-
- /**
- * No-op for a non-networked database
- */
- function ping() {
- return true;
+ function quote_ident( $s ) {
+ return $s;
}
/**
* - 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;
+ global $IP, $wgSQLiteDataDir, $wgDBTableOptions;
$wgDBTableOptions = '';
# Process common MySQL/SQLite table definitions
$err = $this->sourceFile( "$IP/maintenance/tables.sql" );
- if ($err !== true) {
- $this->reportQueryError($err,0,$sql,__FUNCTION__);
+ if ( $err !== true ) {
+ $this->reportQueryError( $err, 0, $sql, __FUNCTION__ );
exit( 1 );
}
# Use DatabasePostgres's code to populate interwiki from MySQL template
- $f = fopen("$IP/maintenance/interwiki.sql",'r');
- if ($f == false) dieout("<li>Could not find the interwiki.sql file");
+ $f = fopen( "$IP/maintenance/interwiki.sql", 'r' );
+ if ( $f == false ) dieout( "<li>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";
}
$s = parent::replaceVars( $s );
if ( preg_match( '/^\s*CREATE 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\1', $s );
// no such thing as unsigned
return $s;
}
+ /*
+ * Build a concatenation list to feed into a SQL query
+ */
+ function buildConcat( $stringList ) {
+ return '(' . implode( ') || (', $stringList ) . ')';
+ }
+
} // end DatabaseSqlite class
/**
# isKey(), isMultipleKey() not implemented, MySQL-specific concept.
# Suggest removal from base class [TS]
-
+
function type() {
return $this->info->type;
}
} // end SQLiteField
-