*
* @return string
*/
- public function getType();
+ function getType();
/**
* Open a connection to the database. Usually aborts on failure
* @return bool
* @throws DBConnectionError
*/
- public function open( $server, $user, $password, $dbName );
+ function open( $server, $user, $password, $dbName );
/**
* The DBMS-dependent part of query()
* @return Result object to feed to fetchObject, fetchRow, ...; or false on failure
* @private
*/
- /*private*/ function doQuery( $sql );
+ function doQuery( $sql );
/**
* Fetch the next row from the given result object, in object form.
* @return Row object
* @throws DBUnexpectedError Thrown if the database returns an error
*/
- public function fetchObject( $res );
+ function fetchObject( $res );
/**
* Fetch the next row from the given result object, in associative array
* @return Row object
* @throws DBUnexpectedError Thrown if the database returns an error
*/
- public function fetchRow( $res );
+ function fetchRow( $res );
/**
* Get the number of rows in a result object
* @param $res Mixed: A SQL result
* @return int
*/
- public function numRows( $res );
+ function numRows( $res );
/**
* Get the number of fields in a result object
* @param $res Mixed: A SQL result
* @return int
*/
- public function numFields( $res );
+ function numFields( $res );
/**
* Get a field name in a result object
* @param $n Integer
* @return string
*/
- public function fieldName( $res, $n );
+ function fieldName( $res, $n );
/**
* Get the inserted value of an auto-increment row
*
* @return int
*/
- public function insertId();
+ function insertId();
/**
* Change the position of the cursor in a result object
* @param $res Mixed: A SQL result
* @param $row Mixed: Either MySQL row or ResultWrapper
*/
- public function dataSeek( $res, $row );
+ function dataSeek( $res, $row );
/**
* Get the last error number
*
* @return int
*/
- public function lastErrno();
+ function lastErrno();
/**
* Get a description of the last error
*
* @return string
*/
- public function lastError();
+ function lastError();
/**
* mysql_fetch_field() wrapper
* @param $table string: table name
* @param $field string: field name
*/
- public function fieldInfo( $table, $field );
+ function fieldInfo( $table, $field );
/**
* Get information about an index into an object
*
* @return int
*/
- public function affectedRows();
+ function affectedRows();
/**
* Wrapper for addslashes()
* @param $s string: to be slashed.
* @return string: slashed string.
*/
- public function strencode( $s );
+ function strencode( $s );
/**
* Returns a wikitext link to the DB's website, e.g.,
*
* @return string: wikitext of a link to the server software's web site
*/
- public static function getSoftwareLink();
+ static function getSoftwareLink();
/**
* A string describing the current software version, like from
*
* @return string: Version information from the database server.
*/
- public function getServerVersion();
+ function getServerVersion();
/**
* A string describing the current software version, and possibly
*
* @return string: Version information from the database server
*/
- public function getServerInfo();
+ function getServerInfo();
}
/**
}
function tablePrefix( $prefix = null ) {
- return wfSetVar( $this->mTablePrefix, $prefix );
+ return wfSetVar( $this->mTablePrefix, $prefix, true );
}
/**
}
}
- /*
- // Faster read-only access
- if ( wfReadOnly() ) {
- $this->mFlags |= DBO_PERSISTENT;
- $this->mFlags &= ~DBO_TRX;
- }*/
-
/** Get the default table prefix*/
if ( $tablePrefix == 'get from global' ) {
$this->mTablePrefix = $wgDBprefix;
return new DatabaseMysql( $server, $user, $password, $dbName, $flags );
}
+ /**
+ * Given a DB type, construct the name of the appropriate child class of
+ * DatabaseBase. This is designed to replace all of the manual stuff like:
+ * $class = 'Database' . ucfirst( strtolower( $type ) );
+ * as well as validate against the canonical list of DB types we have
+ *
+ * @param $dbType String A possible DB type
+ * @return DatabaseBase subclass or null
+ */
+ public final static function classFromType( $dbType ) {
+ $canonicalDBTypes = array(
+ 'mysql', 'postgres', 'sqlite', 'oracle', 'mssql', 'ibm_db2'
+ );
+ $dbType = strtolower( $dbType );
+ if( in_array( $dbType, $canonicalDBTypes ) ) {
+ return 'Database' . ucfirst( $dbType );
+ } else {
+ return null;
+ }
+ }
+
protected function installErrorHandler() {
$this->mPHPError = false;
$this->htmlErrors = ini_set( 'html_errors', '0' );
* comment (you can use __METHOD__ or add some extra info)
* @param $tempIgnore Boolean: Whether to avoid throwing an exception on errors...
* maybe best to catch the exception instead?
- * @return boolean|ResultWrapper true for a successful write query, ResultWrapper object for a successful read query,
+ * @return boolean or ResultWrapper. true for a successful write query, ResultWrapper object for a successful read query,
* or false on failure if $tempIgnore set
* @throws DBQueryError Thrown when the database returns an error of any kind
*/
/**
* SELECT wrapper
*
- * @param $table Mixed: Array or string, table name(s) (prefix auto-added)
+ * @param $table Mixed: Array or string, table name(s) (prefix auto-added). Array keys are table aliases (optional)
* @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
if ( !empty( $join_conds ) || ( isset( $options['USE INDEX'] ) && is_array( @$options['USE INDEX'] ) ) ) {
$from = ' FROM ' . $this->tableNamesWithUseIndexOrJOIN( $table, @$options['USE INDEX'], $join_conds );
} else {
- $from = ' FROM ' . implode( ',', array_map( array( &$this, 'tableName' ), $table ) );
+ $from = ' FROM ' . implode( ',', $this->tableNamesWithAlias( $table ) );
}
} elseif ( $table != '' ) {
if ( $table { 0 } == ' ' ) {
return $retVal;
}
+ /**
+ * Get an aliased table name
+ * e.g. tableName AS newTableName
+ *
+ * @param $name string Table name, see tableName()
+ * @param $alias string Alias (optional)
+ * @return string SQL name for aliased table. Will not alias a table to its own name
+ */
+ public function tableNameWithAlias( $name, $alias = false ) {
+ if ( !$alias || $alias == $name ) {
+ return $this->tableName( $name );
+ } else {
+ return $this->tableName( $name ) . ' `' . $alias . '`';
+ }
+ }
+
+ /**
+ * Gets an array of aliased table names
+ *
+ * @param $tables array( [alias] => table )
+ * @return array of strings, see tableNameWithAlias()
+ */
+ public function tableNamesWithAlias( $tables ) {
+ $retval = array();
+ foreach ( $tables as $alias => $table ) {
+ if ( is_numeric( $alias ) ) {
+ $alias = $table;
+ }
+ $retval[] = $this->tableNameWithAlias( $table, $alias );
+ }
+ return $retval;
+ }
+
/**
* @private
*/
$use_index_safe = is_array( $use_index ) ? $use_index : array();
$join_conds_safe = is_array( $join_conds ) ? $join_conds : array();
- foreach ( $tables as $table ) {
+ foreach ( $tables as $alias => $table ) {
+ if ( !is_string( $alias ) ) {
+ // No alias? Set it equal to the table name
+ $alias = $table;
+ }
// Is there a JOIN and INDEX clause for this table?
- if ( isset( $join_conds_safe[$table] ) && isset( $use_index_safe[$table] ) ) {
- $tableClause = $join_conds_safe[$table][0] . ' ' . $this->tableName( $table );
- $tableClause .= ' ' . $this->useIndexClause( implode( ',', (array)$use_index_safe[$table] ) );
- $on = $this->makeList( (array)$join_conds_safe[$table][1], LIST_AND );
-
+ if ( isset( $join_conds_safe[$alias] ) && isset( $use_index_safe[$alias] ) ) {
+ $tableClause = $join_conds_safe[$alias][0] . ' ' . $this->tableNameWithAlias( $table, $alias );
+ $tableClause .= ' ' . $this->useIndexClause( implode( ',', (array)$use_index_safe[$alias] ) );
+ $on = $this->makeList( (array)$join_conds_safe[$alias][1], LIST_AND );
if ( $on != '' ) {
$tableClause .= ' ON (' . $on . ')';
}
$retJOIN[] = $tableClause;
// Is there an INDEX clause?
- } else if ( isset( $use_index_safe[$table] ) ) {
- $tableClause = $this->tableName( $table );
- $tableClause .= ' ' . $this->useIndexClause( implode( ',', (array)$use_index_safe[$table] ) );
+ } else if ( isset( $use_index_safe[$alias] ) ) {
+ $tableClause = $this->tableNameWithAlias( $table, $alias );
+ $tableClause .= ' ' . $this->useIndexClause( implode( ',', (array)$use_index_safe[$alias] ) );
$ret[] = $tableClause;
// Is there a JOIN clause?
- } else if ( isset( $join_conds_safe[$table] ) ) {
- $tableClause = $join_conds_safe[$table][0] . ' ' . $this->tableName( $table );
- $on = $this->makeList( (array)$join_conds_safe[$table][1], LIST_AND );
-
+ } else if ( isset( $join_conds_safe[$alias] ) ) {
+ $tableClause = $join_conds_safe[$alias][0] . ' ' . $this->tableNameWithAlias( $table, $alias );
+ $on = $this->makeList( (array)$join_conds_safe[$alias][1], LIST_AND );
if ( $on != '' ) {
$tableClause .= ' ON (' . $on . ')';
}
$retJOIN[] = $tableClause;
} else {
- $tableClause = $this->tableName( $table );
+ $tableClause = $this->tableNameWithAlias( $table, $alias );
$ret[] = $tableClause;
}
}
}
}
+ /**
+ * Quotes an identifier using `backticks` or "double quotes" depending on the database type.
+ * MySQL uses `backticks` while basically everything else uses double quotes.
+ * Since MySQL is the odd one out here the double quotes are our generic
+ * and we implement backticks in DatabaseMysql.
+ */
+ public function addIdentifierQuotes( $s ) {
+ return '"' . str_replace( '"', '""', $s ) . '"';
+ }
+
+ /**
+ * Backwards compatibility, identifier quoting originated in DatabasePostgres
+ * which used quote_ident which does not follow our naming conventions
+ * was renamed to addIdentifierQuotes.
+ * @deprecated use addIdentifierQuotes
+ */
+ function quote_ident( $s ) {
+ wfDeprecated( __METHOD__ );
+ return $this->addIdentifierQuotes( $s );
+ }
+
/**
* Escape string for safe LIKE usage.
* WARNING: you should almost never use this function directly,
return "REPLACE({$orig}, {$old}, {$new})";
}
- /**
- * Convert a field to an unix timestamp
- *
- * @param $field String: field name
- * @return String: SQL statement
- */
- public function unixTimestamp( $field ) {
- return "EXTRACT(epoch FROM $field)";
- }
-
/**
* Determines if the last failure was due to a deadlock
* STUB
function duplicateTableStructure( $oldName, $newName, $temporary = false, $fname = 'DatabaseBase::duplicateTableStructure' ) {
throw new MWException( 'DatabaseBase::duplicateTableStructure is not implemented in descendant class' );
}
+
+ /**
+ * List all tables on the database
+ *
+ * @param $prefix Only show tables with this prefix, e.g. mw_
+ * @param $fname String: calling function name
+ */
+ function listTables( $prefix = null, $fname = 'DatabaseBase::listTables' ) {
+ throw new MWException( 'DatabaseBase::listTables is not implemented in descendant class' );
+ }
/**
* Return MW-style timestamp used for MySQL schema
* using $filename
*/
function sourceFile( $filename, $lineCallback = false, $resultCallback = false, $fname = false ) {
+ wfSuppressWarnings();
$fp = fopen( $filename, 'r' );
+ wfRestoreWarnings();
if ( false === $fp ) {
- if ( !defined( "MEDIAWIKI_INSTALL" ) )
- throw new MWException( "Could not open \"{$filename}\".\n" );
- else
- return "Could not open \"{$filename}\".\n";
+ throw new MWException( "Could not open \"{$filename}\".\n" );
}
if ( !$fname ) {
$error = $this->sourceStream( $fp, $lineCallback, $resultCallback, $fname );
}
catch ( MWException $e ) {
- if ( defined( "MEDIAWIKI_INSTALL" ) ) {
- $error = $e->getMessage();
- } else {
- fclose( $fp );
- throw $e;
- }
+ fclose( $fp );
+ throw $e;
}
fclose( $fp );
return true;
}
+ /**
+ * Database independent variable replacement, replaces a set of named variables
+ * in a sql statement with the contents of their global variables.
+ * Supports '{$var}' `{$var}` and / *$var* / (without the spaces) style variables
+ *
+ * '{$var}' should be used for text and is passed through the database's addQuotes method
+ * `{$var}` should be used for identifiers (eg: table and database names), it is passed through
+ * the database's addIdentifierQuotes method which can be overridden if the database
+ * uses something other than backticks.
+ * / *$var* / is just encoded, besides traditional dbprefix and tableoptions it's use should be avoided
+ *
+ * @param $ins String: SQL statement to replace variables in
+ * @param $varnames Array: Array of global variable names to replace
+ * @return String The new SQL statement with variables replaced
+ */
+ protected function replaceGlobalVars( $ins, $varnames ) {
+ foreach ( $varnames as $var ) {
+ if ( isset( $GLOBALS[$var] ) ) {
+ $ins = str_replace( '\'{$' . $var . '}\'', $this->addQuotes( $GLOBALS[$var] ), $ins ); // replace '{$var}'
+ $ins = str_replace( '`{$' . $var . '}`', $this->addIdentifierQuotes( $GLOBALS[$var] ), $ins ); // replace `{$var}`
+ $ins = str_replace( '/*$' . $var . '*/', $this->strencode( $GLOBALS[$var] ) , $ins ); // replace /*$var*/
+ }
+ }
+ return $ins;
+ }
+
/**
* Replace variables in sourced SQL
*/
'wgDBadminuser', 'wgDBadminpassword', 'wgDBTableOptions',
);
- // Ordinary variables
- foreach ( $varnames as $var ) {
- if ( isset( $GLOBALS[$var] ) ) {
- $val = $this->addQuotes( $GLOBALS[$var] ); // FIXME: safety check?
- $ins = str_replace( '{$' . $var . '}', $val, $ins );
- $ins = str_replace( '/*$' . $var . '*/`', '`' . $val, $ins );
- $ins = str_replace( '/*$' . $var . '*/', $val, $ins );
- }
- }
+ $ins = $this->replaceGlobalVars( $ins, $varnames );
// Table prefixes
$ins = preg_replace_callback( '!/\*(?:\$wgDBprefix|_)\*/([a-zA-Z_0-9]*)!',
return true;
}
+ /**
+ * Delete a table
+ */
+ public function dropTable( $tableName, $fName = 'DatabaseBase::dropTable' ) {
+ if( !$this->tableExists( $tableName ) ) {
+ return false;
+ }
+ $sql = "DROP TABLE " . $this->tableName( $tableName );
+ if( $this->cascadingDeletes() ) {
+ $sql .= " CASCADE";
+ }
+ return $this->query( $sql, $fName );
+ }
+
/**
* Get search engine class. All subclasses of this need to implement this
* if they wish to use searching.
return 'SearchEngineDummy';
}
+ /**
+ * Find out when 'infinity' is. Most DBMSes support this. This is a special
+ * keyword for timestamps in PostgreSQL, and works with CHAR(14) as well
+ * because "i" sorts after all numbers.
+ *
+ * @return String
+ */
+ public function getInfinity() {
+ return 'infinity';
+ }
+
/**
* Allow or deny "big selects" for this session only. This is done by setting
* the sql_big_selects session variable.
$this->error = $this->db->getProperty( 'mServer' );
}
+ $this->error = Html::element( 'span', array( 'dir' => 'ltr' ), $this->error );
+
$noconnect = "<p><strong>$sorry</strong><br />$again</p><p><small>$info</small></p>";
$text = str_replace( '$1', $this->error, $noconnect );
return $trygoogle;
}
- function fileCachedPage() {
- global $wgTitle, $title, $wgLang, $wgOut;
+ private function fileCachedPage() {
+ global $wgTitle, $wgLang, $wgOut;
if ( $wgOut->isDisabled() ) {
return; // Done already?
$mainpage = 'Main Page';
if ( $wgLang instanceof Language ) {
- $mainpage = htmlspecialchars( $wgLang->getMessage( 'mainpage' ) );
+ $mainpage = htmlspecialchars( $wgLang->getMessage( 'mainpage' ) );
}
if ( $wgTitle ) {
$t =& $wgTitle;
- } elseif ( $title ) {
- $t = Title::newFromURL( $title );
} else {
$t = Title::newFromText( $mainpage );
}
dépôts / lhc / web / wiklou.git / blobdiff