-<?
-include_once( "FulltextStoplist.php" );
-include_once( "CacheManager.php" );
-
-define( "DB_READ", -1 );
-define( "DB_WRITE", -2 );
-define( "DB_LAST", -3 );
+<?php
+# $Id$
+# This file deals with MySQL interface functions
+# and query specifics/optimisations
+#
+require_once( "CacheManager.php" );
define( "LIST_COMMA", 0 );
define( "LIST_AND", 1 );
+define( "LIST_SET", 2 );
+
+# Number of times to re-try an operation in case of deadlock
+define( "DEADLOCK_TRIES", 4 );
+# Minimum time to wait before retry, in microseconds
+define( "DEADLOCK_DELAY_MIN", 500000 );
+# Maximum time to wait before retry
+define( "DEADLOCK_DELAY_MAX", 1500000 );
class Database {
/* private */ var $mOut, $mDebug, $mOpened = false;
/* private */ var $mFailFunction;
+ /* private */ var $mTablePrefix;
#------------------------------------------------------------------------------
# Accessors
# Output page, used for reporting errors
# FALSE means discard output
- function &setOutputPage( &$out ) { return wfSetRef( $this->mOut, $out ); }
+ function &setOutputPage( &$out ) { $this->mOut =& $out; }
# Boolean, controls output of large amounts of debug information
function setDebug( $debug ) { return wfSetVar( $this->mDebug, $debug ); }
# Other functions
#------------------------------------------------------------------------------
- function Database()
+ function Database( $server = false, $user = false, $password = false, $dbName = false,
+ $failFunction = false, $debug = false, $bufferResults = true, $ignoreErrors = false,
+ $tablePrefix = 'get from global' )
{
- global $wgOut;
- $this->mOut = $wgOut;
-
+ global $wgOut, $wgDBprefix;
+ # Can't get a reference if it hasn't been set yet
+ if ( !isset( $wgOut ) ) {
+ $wgOut = NULL;
+ }
+ $this->mOut =& $wgOut;
+
+ $this->mFailFunction = $failFunction;
+ $this->mIgnoreErrors = $ignoreErrors;
+ $this->mDebug = $debug;
+ $this->mBufferResults = $bufferResults;
+ if ( $tablePrefix == 'get from global' ) {
+ $this->mTablePrefix = $wgDBprefix;
+ } else {
+ $this->mTablePrefix = $tablePrefix;
+ }
+
+ if ( $server ) {
+ $this->open( $server, $user, $password, $dbName );
+ }
}
/* static */ function newFromParams( $server, $user, $password, $dbName,
$failFunction = false, $debug = false, $bufferResults = true, $ignoreErrors = false )
{
- $db = new Database;
- $db->mFailFunction = $failFunction;
- $db->mIgnoreErrors = $ignoreErrors;
- $db->mDebug = $debug;
- $db->open( $server, $user, $password, $dbName );
- return $db;
+ return new Database( $server, $user, $password, $dbName, $failFunction, $debug,
+ $bufferResults, $ignoreErrors );
}
# Usually aborts on failure
# If the failFunction is set to a non-zero integer, returns success
function open( $server, $user, $password, $dbName )
{
- global $wgEmergencyContact;
+ # Test for missing mysql.so
+ # Otherwise we get a suppressed fatal error, which is very hard to track down
+ if ( !function_exists( 'mysql_connect' ) ) {
+ die( "MySQL functions missing, have you compiled PHP with the --with-mysql option?\n" );
+ }
$this->close();
$this->mServer = $server;
wfDebug( "Error selecting database \"$dbName\": " . $this->lastError() . "\n" );
}
} else {
- wfDebug( "DB connect error: " . $this->lastError() . "\n" );
+ wfDebug( "DB connection error\n" );
wfDebug( "Server: $server, User: $user, Password: " .
substr( $password, 0, 3 ) . "...\n" );
$success = false;
}
} else {
- # Delay USE
- $success = true;
+ # Delay USE query
+ $success = !!$this->mConn;
}
if ( !$success ) {
{
if ( $this->mFailFunction ) {
if ( !is_int( $this->mFailFunction ) ) {
- $this->$mFailFunction( $this );
+ $ff = $this->mFailFunction;
+ $ff( $this, mysql_error() );
}
} else {
- wfEmergencyAbort( $this );
+ wfEmergencyAbort( $this, mysql_error() );
}
}
# Usually aborts on failure
# If errors are explicitly ignored, returns success
- function query( $sql, $fname = "" )
+ function query( $sql, $fname = "", $tempIgnore = false )
{
- global $wgProfiling;
+ global $wgProfiling, $wgCommandLineMode;
if ( $wgProfiling ) {
# generalizeSQL will probably cut down the query to reasonable
$sqlx = wordwrap(strtr($sqlx,"\t\n"," "));
wfDebug( "SQL: $sqlx\n" );
}
+ # Add a comment for easy SHOW PROCESSLIST interpretation
+ if ( $fname ) {
+ $commentedSql = "/* $fname */ $sql";
+ } else {
+ $commentedSql = $sql;
+ }
+
if( $this->mBufferResults ) {
- $ret = mysql_query( $sql, $this->mConn );
+ $ret = mysql_query( $commentedSql, $this->mConn );
} else {
- $ret = mysql_unbuffered_query( $sql, $this->mConn );
+ $ret = mysql_unbuffered_query( $commentedSql, $this->mConn );
}
if ( false === $ret ) {
- if( $this->mIgnoreErrors ) {
- wfDebug("SQL ERROR (ignored): " . mysql_error( $this->mConn ) . "\n");
- } else {
- wfDebug("SQL ERROR: " . mysql_error( $this->mConn ) . "\n");
- if ( $this->mOut ) {
- $this->mOut->databaseError( $fname ); // calls wfAbruptExit()
- }
- }
+ $this->reportQueryError( mysql_error(), mysql_errno(), $sql, $fname, $tempIgnore );
}
if ( $wgProfiling ) {
return $ret;
}
- function freeResult( $res ) { mysql_free_result( $res ); }
- function fetchObject( $res ) { return mysql_fetch_object( $res ); }
- function numRows( $res ) { return mysql_num_rows( $res ); }
+ function reportQueryError( $error, $errno, $sql, $fname, $tempIgnore = false ) {
+ global $wgCommandLineMode, $wgFullyInitialised;
+ # Ignore errors during error handling to avoid infinite recursion
+ $ignore = $this->setIgnoreErrors( true );
+
+ if( $ignore || $tempIgnore ) {
+ wfDebug("SQL ERROR (ignored): " . $error . "\n");
+ } else {
+ $sql1line = str_replace( "\n", "\\n", $sql );
+ wfLogDBError("$fname\t$errno\t$error\t$sql1line\n");
+ wfDebug("SQL ERROR: " . $error . "\n");
+ if ( $wgCommandLineMode || !$this->mOut || empty( $wgFullyInitialised ) ) {
+ $message = "A database error has occurred\n" .
+ "Query: $sql\n" .
+ "Function: $fname\n" .
+ "Error: $errno $error\n";
+ if ( !$wgCommandLineMode ) {
+ $message = nl2br( $message );
+ }
+ wfDebugDieBacktrace( $message );
+ } else {
+ // this calls wfAbruptExit()
+ $this->mOut->databaseError( $fname, $sql, $error, $errno );
+ }
+ }
+ $this->setIgnoreErrors( $ignore );
+ }
+
+ function freeResult( $res ) {
+ if ( !@mysql_free_result( $res ) ) {
+ wfDebugDieBacktrace( "Unable to free MySQL result\n" );
+ }
+ }
+ function fetchObject( $res ) {
+ @$row = mysql_fetch_object( $res );
+ # FIXME: HACK HACK HACK HACK debug
+ if( mysql_errno() ) {
+ wfDebugDieBacktrace( "Error in fetchObject(): " . htmlspecialchars( mysql_error() ) );
+ }
+ return $row;
+ }
+
+ function fetchRow( $res ) {
+ @$row = mysql_fetch_array( $res );
+ if (mysql_errno() ) {
+ wfDebugDieBacktrace( "Error in fetchRow(): " . htmlspecialchars( mysql_error() ) );
+ }
+ return $row;
+ }
+
+ function numRows( $res ) {
+ @$n = mysql_num_rows( $res );
+ if( mysql_errno() ) {
+ wfDebugDieBacktrace( "Error in numRows(): " . htmlspecialchars( mysql_error() ) );
+ }
+ return $n;
+ }
function numFields( $res ) { return mysql_num_fields( $res ); }
function fieldName( $res, $n ) { return mysql_field_name( $res, $n ); }
function insertId() { return mysql_insert_id( $this->mConn ); }
function dataSeek( $res, $row ) { return mysql_data_seek( $res, $row ); }
- function lastErrno() { return mysql_errno( $this->mConn ); }
- function lastError() { return mysql_error( $this->mConn ); }
+ function lastErrno() { return mysql_errno(); }
+ function lastError() { return mysql_error(); }
function affectedRows() { return mysql_affected_rows( $this->mConn ); }
# Simple UPDATE wrapper
# If errors are explicitly ignored, returns success
function set( $table, $var, $value, $cond, $fname = "Database::set" )
{
+ $table = $this->tableName( $table );
$sql = "UPDATE $table SET $var = '" .
- wfStrencode( $value ) . "' WHERE ($cond)";
- return !!$this->query( $sql, DB_WRITE, $fname );
+ $this->strencode( $value ) . "' WHERE ($cond)";
+ return !!$this->query( $sql, DB_MASTER, $fname );
}
- # Simple SELECT wrapper
+ function getField( $table, $var, $cond, $fname = "Database::get", $options = array() ) {
+ return $this->selectField( $table, $var, $cond, $fname = "Database::get", $options = array() );
+ }
+
+ # 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 get( $table, $var, $cond, $fname = "Database::get" )
+ function selectField( $table, $var, $cond, $fname = "Database::selectField", $options = array() )
{
- $sql = "SELECT $var FROM $table WHERE ($cond)";
- $result = $this->query( $sql, DB_READ, $fname );
+ 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;
+ }
+ }
- $ret = "";
- if ( mysql_num_rows( $result ) > 0 ) {
- $s = mysql_fetch_object( $result );
- $ret = $s->$var;
- mysql_free_result( $result );
+ # Returns an optional USE INDEX clause to go after the table, and a string to go at the end of the query
+ function makeSelectOptions( $options ) {
+ if ( !is_array( $options ) ) {
+ $options = array( $options );
}
- return $ret;
+
+ $tailOpts = '';
+
+ if ( isset( $options['ORDER BY'] ) ) {
+ $tailOpts .= " ORDER BY {$options['ORDER BY']}";
+ }
+ if ( isset( $options['LIMIT'] ) ) {
+ $tailOpts .= " LIMIT {$options['LIMIT']}";
+ }
+
+ if ( is_numeric( array_search( 'FOR UPDATE', $options ) ) ) {
+ $tailOpts .= ' FOR UPDATE';
+ }
+
+ if ( is_numeric( array_search( 'LOCK IN SHARE MODE', $options ) ) ) {
+ $tailOpts .= ' LOCK IN SHARE MODE';
+ }
+
+ if ( isset( $options['USE INDEX'] ) ) {
+ $useIndex = $this->useIndexClause( $options['USE INDEX'] );
+ } else {
+ $useIndex = '';
+ }
+ return array( $useIndex, $tailOpts );
+ }
+
+ # SELECT wrapper
+ function select( $table, $vars, $conds, $fname = "Database::select", $options = array() )
+ {
+ if ( is_array( $vars ) ) {
+ $vars = implode( ",", $vars );
+ }
+ $table = $this->tableName( $table );
+ list( $useIndex, $tailOpts ) = $this->makeSelectOptions( $options );
+
+ if ( $conds !== false ) {
+ if ( is_array( $conds ) ) {
+ $conds = $this->makeList( $conds, LIST_AND );
+ }
+ $sql = "SELECT $vars FROM $table $useIndex WHERE $conds $tailOpts";
+ } else {
+ $sql = "SELECT $vars FROM $table $useIndex $tailOpts";
+ }
+ return $this->query( $sql, $fname );
+ }
+
+ function getArray( $table, $vars, $conds, $fname = "Database::getArray", $options = array() ) {
+ return $this->selectRow( $table, $vars, $conds, $fname, $options );
}
- # More complex SELECT wrapper, single row only
+ # Single row SELECT wrapper
# Aborts or returns FALSE on error
+ #
+ # $vars: the selected variables
+ # $conds: a condition map, terms are ANDed together.
+ # Items with numeric keys are taken to be literal conditions
# Takes an array of selected variables, and a condition map, which is ANDed
- # e.g. getArray( "cur", array( "cur_id" ), array( "cur_namespace" => 0, "cur_title" => "Astronomy" ) )
+ # e.g. selectRow( "cur", array( "cur_id" ), array( "cur_namespace" => 0, "cur_title" => "Astronomy" ) )
# would return an object where $obj->cur_id is the ID of the Astronomy article
- function getArray( $table, $vars, $conds, $fname = "Database::getArray" )
- {
- $vars = implode( ",", $vars );
- $where = Database::makeList( $conds, LIST_AND );
- $sql = "SELECT $vars FROM $table WHERE $where";
- $res = $this->query( $sql, $fname );
+ function selectRow( $table, $vars, $conds, $fname = "Database::selectRow", $options = array() ) {
+ $options['LIMIT'] = 1;
+ $res = $this->select( $table, $vars, $conds, $fname, $options );
if ( $res === false || !$this->numRows( $res ) ) {
return false;
}
- return $this->fetchObject( $res );
+ $obj = $this->fetchObject( $res );
+ $this->freeResult( $res );
+ return $obj;
+
}
# Removes most variables from an SQL query and replaces them with X or N for numbers.
# If errors are explicitly ignored, returns NULL on failure
function fieldExists( $table, $field, $fname = "Database::fieldExists" )
{
- $res = $this->query( "DESCRIBE $table", DB_READ, $fname );
+ $table = $this->tableName( $table );
+ $res = $this->query( "DESCRIBE $table", DB_SLAVE, $fname );
if ( !$res ) {
return NULL;
}
# If errors are explicitly ignored, returns NULL on failure
function indexExists( $table, $index, $fname = "Database::indexExists" )
{
- $sql = "SHOW INDEXES FROM $table";
- $res = $this->query( $sql, DB_READ, $fname );
+ $info = $this->indexInfo( $table, $index, $fname );
+ if ( is_null( $info ) ) {
+ return NULL;
+ } else {
+ return $info !== false;
+ }
+ }
+
+ function indexInfo( $table, $index, $fname = "Database::indexInfo" ) {
+ # SHOW INDEX works in MySQL 3.23.58, but SHOW INDEXES does not.
+ # SHOW INDEX should work for 3.x and up:
+ # http://dev.mysql.com/doc/mysql/en/SHOW_INDEX.html
+ $table = $this->tableName( $table );
+ $sql = "SHOW INDEX FROM $table";
+ $res = $this->query( $sql, $fname );
if ( !$res ) {
return NULL;
}
- $found = false;
-
while ( $row = $this->fetchObject( $res ) ) {
if ( $row->Key_name == $index ) {
- $found = true;
- break;
+ return $row;
}
}
- return $found;
+ return false;
}
-
function tableExists( $table )
{
- $res = mysql_list_tables( $this->mDBname );
- if( !$res ) {
- echo "** " . $this->lastError() . "\n";
+ $table = $this->tableName( $table );
+ $old = $this->mIgnoreErrors;
+ $this->mIgnoreErrors = true;
+ $res = $this->query( "SELECT 1 FROM $table LIMIT 1" );
+ $this->mIgnoreErrors = $old;
+ if( $res ) {
+ $this->freeResult( $res );
+ return true;
+ } else {
return false;
}
- for( $i = $this->numRows( $res ) - 1; $i--; $i > 0 ) {
- if( mysql_tablename( $res, $i ) == $table ) return true;
- }
- return false;
}
function fieldInfo( $table, $field )
{
+ $table = $this->tableName( $table );
$res = $this->query( "SELECT * FROM $table LIMIT 1" );
$n = mysql_num_fields( $res );
for( $i = 0; $i < $n; $i++ ) {
}
return false;
}
+
+ function fieldType( $res, $index ) {
+ return mysql_field_type( $res, $index );
+ }
+
+ function indexUnique( $table, $index ) {
+ $indexInfo = $this->indexInfo( $table, $index );
+ if ( !$indexInfo ) {
+ return NULL;
+ }
+ return !$indexInfo->Non_unique;
+ }
+
+ function insertArray( $table, $a, $fname = "Database::insertArray", $options = array() ) {
+ return $this->insert( $table, $a, $fname = "Database::insertArray", $options = array() );
+ }
# INSERT wrapper, inserts an array into a table
- # Keys are field names, values are values
+ #
+ # $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
- function insertArray( $table, $a, $fname = "Database::insertArray" )
+ function insert( $table, $a, $fname = "Database::insert", $options = array() )
{
- $sql1 = "INSERT INTO $table (";
- $sql2 = "VALUES (" . Database::makeList( $a );
- $first = true;
- foreach ( $a as $field => $value ) {
- if ( !$first ) {
- $sql1 .= ",";
+ $table = $this->tableName( $table );
+ if ( !is_array( $options ) ) {
+ $options = array( $options );
+ }
+ if ( isset( $a[0] ) && is_array( $a[0] ) ) {
+ $multi = true;
+ $keys = array_keys( $a[0] );
+ } else {
+ $multi = false;
+ $keys = array_keys( $a );
+ }
+
+ $sql = 'INSERT ' . implode( ' ', $options ) .
+ " INTO $table (" . implode( ',', $keys ) . ') VALUES ';
+
+ if ( $multi ) {
+ $first = true;
+ foreach ( $a as $row ) {
+ if ( $first ) {
+ $first = false;
+ } else {
+ $sql .= ",";
+ }
+ $sql .= '(' . $this->makeList( $row ) . ')';
}
- $first = false;
- $sql1 .= $field;
+ } else {
+ $sql .= '(' . $this->makeList( $a ) . ')';
}
- $sql = "$sql1) $sql2)";
return !!$this->query( $sql, $fname );
}
+
+ function updateArray( $table, $values, $conds, $fname = "Database::updateArray" ) {
+ return $this->update( $table, $values, $conds, $fname );
+ }
+
+ # UPDATE wrapper, takes a condition array and a SET array
+ function update( $table, $values, $conds, $fname = "Database::update" )
+ {
+ $table = $this->tableName( $table );
+ $sql = "UPDATE $table SET " . $this->makeList( $values, LIST_SET );
+ $sql .= " WHERE " . $this->makeList( $conds, LIST_AND );
+ $this->query( $sql, $fname );
+ }
# Makes a wfStrencoded list from an array
- # $mode: LIST_COMMA - comma separated
- # LIST_AND - ANDed WHERE clause (without the WHERE)
- /* static */ function makeList( $a, $mode = LIST_COMMA)
+ # $mode: LIST_COMMA - comma separated, no field names
+ # LIST_AND - ANDed WHERE clause (without the WHERE)
+ # LIST_SET - comma separated with field names, like a SET clause
+ function makeList( $a, $mode = LIST_COMMA )
{
+ if ( !is_array( $a ) ) {
+ wfDebugDieBacktrace( 'Database::makeList called with incorrect parameters' );
+ }
+
$first = true;
$list = "";
foreach ( $a as $field => $value ) {
} else {
$first = false;
}
- if ( $mode == LIST_AND ) {
- $list .= "$field=";
- }
- if ( is_string( $value ) ) {
- $list .= "'" . wfStrencode( $value ) . "'";
+ if ( $mode == LIST_AND && is_numeric( $field ) ) {
+ $list .= "($value)";
} else {
- $list .= $value;
+ if ( $mode == LIST_AND || $mode == LIST_SET ) {
+ $list .= "$field=";
+ }
+ $list .= $this->addQuotes( $value );
}
}
return $list;
function selectDB( $db )
{
- $this->mDatabase = $db;
+ $this->mDBname = $db;
mysql_select_db( $db, $this->mConn );
}
+
+ function startTimer( $timeout )
+ {
+ global $IP;
+
+ $tid = mysql_thread_id( $this->mConn );
+ exec( "php $IP/killthread.php $timeout $tid &>/dev/null &" );
+ }
+
+ function stopTimer()
+ {
+ }
+
+ function tableName( $name ) {
+ if ( $this->mTablePrefix !== '' ) {
+ if ( strpos( '.', $name ) === false ) {
+ $name = $this->mTablePrefix . $name;
+ }
+ }
+ return $name;
+ }
+
+ function tableNames() {
+ $inArray = func_get_args();
+ $retVal = array();
+ foreach ( $inArray as $name ) {
+ $retVal[$name] = $this->tableName( $name );
+ }
+ return $retVal;
+ }
+
+ function strencode( $s ) {
+ return addslashes( $s );
+ }
+
+ # If it's a string, adds quotes and backslashes
+ # Otherwise returns as-is
+ function addQuotes( $s ) {
+ if ( !is_numeric( $s ) ) {
+ $s = "'" . $this->strencode( $s ) . "'";
+ } else if ( is_null( $s ) ) {
+ $s = 'NULL';
+ }
+ return $s;
+ }
+
+ # Returns an appropriately quoted sequence value for inserting a new row.
+ # MySQL has autoincrement fields, so this is just NULL. But the PostgreSQL
+ # subclass will return an integer, and save the value for insertId()
+ function nextSequenceValue( $seqName ) {
+ return NULL;
+ }
+
+ # USE INDEX clause
+ # PostgreSQL doesn't have them and returns ""
+ function useIndexClause( $index ) {
+ return "USE INDEX ($index)";
+ }
+
+ # 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
+ 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_flip( $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
+ #
+ # $delTable is the table to delete from
+ # $joinTable is the other table
+ # $delVar is the variable to join on, in the first table
+ # $joinVar is the variable to join on, in the second table
+ # $conds is a condition array of field names mapped to variables, ANDed together in the WHERE clause
+ #
+ # 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
+ function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = "Database::deleteJoin" ) {
+ if ( !$conds ) {
+ wfDebugDieBacktrace( '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 = "SHOW COLUMNS FROM $table LIKE \"$field\";";
+ $res = $this->query( $sql, "Database::textFieldSize" );
+ $row = $this->fetchObject( $res );
+ $this->freeResult( $res );
+
+ if ( preg_match( "/\((.*)\)/", $row->Type, $m ) ) {
+ $size = $m[1];
+ } else {
+ $size = -1;
+ }
+ return $size;
+ }
+
+ function lowPriorityOption() {
+ return 'LOW_PRIORITY';
+ }
+
+ # Use $conds == "*" to delete all rows
+ function delete( $table, $conds, $fname = "Database::delete" ) {
+ if ( !$conds ) {
+ wfDebugDieBacktrace( "Database::delete() called with no conditions" );
+ }
+ $table = $this->tableName( $table );
+ $sql = "DELETE FROM $table ";
+ if ( $conds != '*' ) {
+ $sql .= "WHERE " . $this->makeList( $conds, LIST_AND );
+ }
+ return $this->query( $sql, $fname );
+ }
+
+ # 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
+ function insertSelect( $destTable, $srcTable, $varMap, $conds, $fname = 'Database::insertSelect' ) {
+ $destTable = $this->tableName( $destTable );
+ $srcTable = $this->tableName( $srcTable );
+ $sql = "INSERT INTO $destTable (" . implode( ',', array_keys( $varMap ) ) . ")" .
+ " SELECT " . implode( ',', $varMap ) .
+ " FROM $srcTable";
+ if ( $conds != '*' ) {
+ $sql .= " WHERE " . $this->makeList( $conds, LIST_AND );
+ }
+ return $this->query( $sql, $fname );
+ }
+
+ function limitResult($limit,$offset) {
+ return " LIMIT ".(is_numeric($offset)?"{$offset},":"")."{$limit} ";
+ }
+
+ function wasDeadlock() {
+ return $this->lastErrno() == 1213;
+ }
+
+ function deadlockLoop() {
+ $myFname = 'Database::deadlockLoop';
+
+ $this->query( "BEGIN", $myFname );
+ $args = func_get_args();
+ $function = array_shift( $args );
+ $oldIgnore = $dbw->setIgnoreErrors( true );
+ $tries = DEADLOCK_TRIES;
+ if ( is_array( $function ) ) {
+ $fname = $function[0];
+ } else {
+ $fname = $function;
+ }
+ do {
+ $retVal = call_user_func_array( $function, $args );
+ $error = $this->lastError();
+ $errno = $this->lastErrno();
+ $sql = $this->lastQuery();
+
+ if ( $errno ) {
+ if ( $dbw->wasDeadlock() ) {
+ # Retry
+ usleep( mt_rand( DEADLOCK_DELAY_MIN, DEADLOCK_DELAY_MAX ) );
+ } else {
+ $dbw->reportQueryError( $error, $errno, $sql, $fname );
+ }
+ }
+ } while( $dbw->wasDeadlock && --$tries > 0 );
+ $this->setIgnoreErrors( $oldIgnore );
+ if ( $tries <= 0 ) {
+ $this->query( "ROLLBACK", $myFname );
+ $this->reportQueryError( $error, $errno, $sql, $fname );
+ return false;
+ } else {
+ $this->query( "COMMIT", $myFname );
+ return $retVal;
+ }
+ }
+
+ # Do a SELECT MASTER_POS_WAIT()
+ function masterPosWait( $file, $pos ) {
+ $encFile = $this->strencode( $file );
+ $sql = "SELECT MASTER_POS_WAIT('$encFile', $pos)";
+ $res = $this->query( $sql, "Database::masterPosWait" );
+ if ( $res && $row = $this->fetchRow( $res ) ) {
+ $this->freeResult( $res );
+ return $row[0];
+ } else {
+ return false;
+ }
+ }
+
+ # Get the position of the master from SHOW SLAVE STATUS
+ function getSlavePos() {
+ $res = $this->query( 'SHOW SLAVE STATUS', 'Database::getSlavePos' );
+ $row = $this->fetchObject( $res );
+ if ( $row ) {
+ return array( $row->Master_Log_File, $row->Read_Master_Log_Pos );
+ } else {
+ return array( false, false );
+ }
+ }
+
+ # Get the position of the master from SHOW MASTER STATUS
+ function getMasterPos() {
+ $res = $this->query( 'SHOW MASTER STATUS', 'Database::getMasterPos' );
+ $row = $this->fetchObject( $res );
+ if ( $row ) {
+ return array( $row->File, $row->Position );
+ } else {
+ return array( false, false );
+ }
+ }
+}
+
+class DatabaseMysql extends Database {
+ # Inherit all
}
#------------------------------------------------------------------------------
/* Standard fail function, called by default when a connection cannot be established
Displays the file cache if possible */
-function wfEmergencyAbort( &$conn ) {
+function wfEmergencyAbort( &$conn, $error ) {
global $wgTitle, $wgUseFileCache, $title, $wgInputEncoding, $wgSiteNotice, $wgOutputEncoding;
- header( "Content-type: text/html; charset=$wgOutputEncoding" );
+ if( !headers_sent() ) {
+ header( "HTTP/1.0 500 Internal Server Error" );
+ header( "Content-type: text/html; charset=$wgOutputEncoding" );
+ /* Don't cache error pages! They cause no end of trouble... */
+ header( "Cache-control: none" );
+ header( "Pragma: nocache" );
+ }
$msg = $wgSiteNotice;
- if($msg == "") $msg = wfMsgNoDB( "noconnect" );
+ if($msg == "") $msg = wfMsgNoDB( "noconnect", $error );
$text = $msg;
if($wgUseFileCache) {
} else {
if($title) {
$t = Title::newFromURL( $title );
- } elseif ($_REQUEST['search']) {
+ } elseif (@$_REQUEST['search']) {
$search = $_REQUEST['search'];
- echo wfMsgNoDB( "searchdisabled", htmlspecialchars( $search ), $wgInputEncoding );
+ echo wfMsgNoDB( "searchdisabled" );
+ echo wfMsgNoDB( "googlesearch", htmlspecialchars( $search ), $wgInputEncoding );
wfAbruptExit();
} else {
$t = Title::newFromText( wfMsgNoDB( "mainpage" ) );
$cache = new CacheManager( $t );
if( $cache->isFileCached() ) {
- $msg = "<p style='color: red'><b>$msg<br>\n" .
+ $msg = "<p style='color: red'><b>$msg<br />\n" .
wfMsgNoDB( "cachederror" ) . "</b></p>\n";
$tag = "<div id='article'>";
}
}
- /* Don't cache error pages! They cause no end of trouble... */
- header( "Cache-control: none" );
- header( "Pragma: nocache" );
echo $text;
wfAbruptExit();
}
-function wfStrencode( $s )
-{
- return addslashes( $s );
-}
-
-# Ideally we'd be using actual time fields in the db
-function wfTimestamp2Unix( $ts ) {
- return gmmktime( ( (int)substr( $ts, 8, 2) ),
- (int)substr( $ts, 10, 2 ), (int)substr( $ts, 12, 2 ),
- (int)substr( $ts, 4, 2 ), (int)substr( $ts, 6, 2 ),
- (int)substr( $ts, 0, 4 ) );
-}
-
-function wfUnix2Timestamp( $unixtime ) {
- return gmdate( "YmdHis", $unixtime );
+function wfLimitResult( $limit, $offset ) {
+ return " LIMIT ".(is_numeric($offset)?"{$offset},":"")."{$limit} ";
}
-function wfTimestampNow() {
- # return NOW
- return gmdate( "YmdHis" );
-}
-
-# Sorting hack for MySQL 3, which doesn't use index sorts for DESC
-function wfInvertTimestamp( $ts ) {
- return strtr(
- $ts,
- "0123456789",
- "9876543210"
- );
-}
?>
dépôts / lhc / web / wiklou.git / blobdiff