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moodle/lib/adodb/drivers/adodb-mssqlnative.inc.php
Eloy Lafuente (stronk7) 91969d1e04 MDL-71011 adodb: Bump to v5.21.0 
Following the instructions @ readme_moodle.txt
2021-04-12 18:49:30 +02:00

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<?php
/*
@version v5.21.0 2021-02-27
@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
@copyright (c) 2014 Damien Regad, Mark Newnham and the ADOdb community
Released under both BSD license and Lesser GPL library license.
Whenever there is any discrepancy between the two licenses,
the BSD license will take precedence.
Set tabs to 4 for best viewing.
Latest version is available at https://adodb.org/
Native mssql driver. Requires mssql client. Works on Windows.
http://www.microsoft.com/sql/technologies/php/default.mspx
To configure for Unix, see
http://phpbuilder.com/columns/alberto20000919.php3
$stream = sqlsrv_get_field($stmt, $index, SQLSRV_SQLTYPE_STREAM(SQLSRV_ENC_BINARY));
stream_filter_append($stream, "convert.iconv.ucs-2/utf-8"); // Voila, UTF-8 can be read directly from $stream
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
if (!function_exists('sqlsrv_configure')) {
die("mssqlnative extension not installed");
}
if (!function_exists('sqlsrv_set_error_handling')) {
function sqlsrv_set_error_handling($constant) {
sqlsrv_configure("WarningsReturnAsErrors", $constant);
}
}
if (!function_exists('sqlsrv_log_set_severity')) {
function sqlsrv_log_set_severity($constant) {
sqlsrv_configure("LogSeverity", $constant);
}
}
if (!function_exists('sqlsrv_log_set_subsystems')) {
function sqlsrv_log_set_subsystems($constant) {
sqlsrv_configure("LogSubsystems", $constant);
}
}
class ADODB_mssqlnative extends ADOConnection {
var $databaseType = "mssqlnative";
var $dataProvider = "mssqlnative";
var $replaceQuote = "''"; // string to use to replace quotes
var $fmtDate = "'Y-m-d'";
var $fmtTimeStamp = "'Y-m-d\TH:i:s'";
var $hasInsertID = true;
var $substr = "substring";
var $length = 'len';
var $hasAffectedRows = true;
var $poorAffectedRows = false;
var $metaDatabasesSQL = "select name from sys.sysdatabases where name <> 'master'";
var $metaTablesSQL="select name,case when type='U' then 'T' else 'V' end from sysobjects where (type='U' or type='V') and (name not in ('sysallocations','syscolumns','syscomments','sysdepends','sysfilegroups','sysfiles','sysfiles1','sysforeignkeys','sysfulltextcatalogs','sysindexes','sysindexkeys','sysmembers','sysobjects','syspermissions','sysprotects','sysreferences','systypes','sysusers','sysalternates','sysconstraints','syssegments','REFERENTIAL_CONSTRAINTS','CHECK_CONSTRAINTS','CONSTRAINT_TABLE_USAGE','CONSTRAINT_COLUMN_USAGE','VIEWS','VIEW_TABLE_USAGE','VIEW_COLUMN_USAGE','SCHEMATA','TABLES','TABLE_CONSTRAINTS','TABLE_PRIVILEGES','COLUMNS','COLUMN_DOMAIN_USAGE','COLUMN_PRIVILEGES','DOMAINS','DOMAIN_CONSTRAINTS','KEY_COLUMN_USAGE','dtproperties'))";
var $metaColumnsSQL =
"select c.name,
t.name as type,
c.length,
c.xprec as precision,
c.xscale as scale,
c.isnullable as nullable,
c.cdefault as default_value,
c.xtype,
t.length as type_length,
sc.is_identity
from syscolumns c
join systypes t on t.xusertype=c.xusertype
join sysobjects o on o.id=c.id
join sys.tables st on st.name=o.name
join sys.columns sc on sc.object_id = st.object_id and sc.name=c.name
where o.name='%s'";
var $hasTop = 'top'; // support mssql SELECT TOP 10 * FROM TABLE
var $hasGenID = true;
var $sysDate = 'convert(datetime,convert(char,GetDate(),102),102)';
var $sysTimeStamp = 'GetDate()';
var $maxParameterLen = 4000;
var $arrayClass = 'ADORecordSet_array_mssqlnative';
var $uniqueSort = true;
var $leftOuter = '*=';
var $rightOuter = '=*';
var $ansiOuter = true; // for mssql7 or later
var $identitySQL = 'select SCOPE_IDENTITY()'; // 'select SCOPE_IDENTITY'; # for mssql 2000
var $uniqueOrderBy = true;
var $_bindInputArray = true;
var $_dropSeqSQL = "drop table %s";
var $connectionInfo = array('ReturnDatesAsStrings'=>true);
var $cachedSchemaFlush = false;
var $sequences = false;
var $mssql_version = '';
function __construct()
{
if ($this->debug) {
ADOConnection::outp("<pre>");
sqlsrv_set_error_handling( SQLSRV_ERRORS_LOG_ALL );
sqlsrv_log_set_severity( SQLSRV_LOG_SEVERITY_ALL );
sqlsrv_log_set_subsystems(SQLSRV_LOG_SYSTEM_ALL);
sqlsrv_configure('WarningsReturnAsErrors', 0);
} else {
sqlsrv_set_error_handling(0);
sqlsrv_log_set_severity(0);
sqlsrv_log_set_subsystems(SQLSRV_LOG_SYSTEM_ALL);
sqlsrv_configure('WarningsReturnAsErrors', 0);
}
}
/**
* Initializes the SQL Server version.
* Dies if connected to a non-supported version (2000 and older)
*/
function ServerVersion() {
$data = $this->ServerInfo();
preg_match('/^\d{2}/', $data['version'], $matches);
$version = (int)reset($matches);
// We only support SQL Server 2005 and up
if($version < 9) {
die("SQL SERVER VERSION {$data['version']} NOT SUPPORTED IN mssqlnative DRIVER");
}
$this->mssql_version = $version;
}
function ServerInfo() {
global $ADODB_FETCH_MODE;
static $arr = false;
if (is_array($arr))
return $arr;
if ($this->fetchMode === false) {
$savem = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
} elseif ($this->fetchMode >=0 && $this->fetchMode <=2) {
$savem = $this->fetchMode;
} else
$savem = $this->SetFetchMode(ADODB_FETCH_NUM);
$arrServerInfo = sqlsrv_server_info($this->_connectionID);
$ADODB_FETCH_MODE = $savem;
$arr['description'] = $arrServerInfo['SQLServerName'].' connected to '.$arrServerInfo['CurrentDatabase'];
$arr['version'] = $arrServerInfo['SQLServerVersion'];//ADOConnection::_findvers($arr['description']);
return $arr;
}
function IfNull( $field, $ifNull )
{
return " ISNULL($field, $ifNull) "; // if MS SQL Server
}
function _insertid()
{
$rez = sqlsrv_query($this->_connectionID,$this->identitySQL);
sqlsrv_fetch($rez);
$this->lastInsertID = sqlsrv_get_field($rez, 0);
return $this->lastInsertID;
}
function _affectedrows()
{
if ($this->_queryID)
return sqlsrv_rows_affected($this->_queryID);
}
function GenID($seq='adodbseq',$start=1) {
switch($this->mssql_version){
case 9:
case 10:
return $this->GenID2008($seq, $start);
break;
default:
return $this->GenID2012($seq, $start);
break;
}
}
function CreateSequence($seq='adodbseq',$start=1)
{
switch($this->mssql_version){
case 9:
case 10:
return $this->CreateSequence2008($seq, $start);
break;
default:
return $this->CreateSequence2012($seq, $start);
break;
}
}
/**
* For Server 2005,2008, duplicate a sequence with an identity table
*/
function CreateSequence2008($seq='adodbseq',$start=1)
{
if($this->debug) ADOConnection::outp("<hr>CreateSequence($seq,$start)");
sqlsrv_begin_transaction($this->_connectionID);
$start -= 1;
$this->Execute("create table $seq (id int)");//was float(53)
$ok = $this->Execute("insert into $seq with (tablock,holdlock) values($start)");
if (!$ok) {
if($this->debug) ADOConnection::outp("<hr>Error: ROLLBACK");
sqlsrv_rollback($this->_connectionID);
return false;
}
sqlsrv_commit($this->_connectionID);
return true;
}
/**
* Proper Sequences Only available to Server 2012 and up
*/
function CreateSequence2012($seq='adodbseq',$start=1){
if (!$this->sequences){
$sql = "SELECT name FROM sys.sequences";
$this->sequences = $this->GetCol($sql);
}
$ok = $this->Execute("CREATE SEQUENCE $seq START WITH $start INCREMENT BY 1");
if (!$ok)
die("CANNOT CREATE SEQUENCE" . print_r(sqlsrv_errors(),true));
$this->sequences[] = $seq;
}
/**
* For Server 2005,2008, duplicate a sequence with an identity table
*/
function GenID2008($seq='adodbseq',$start=1)
{
if($this->debug) ADOConnection::outp("<hr>CreateSequence($seq,$start)");
sqlsrv_begin_transaction($this->_connectionID);
$ok = $this->Execute("update $seq with (tablock,holdlock) set id = id + 1");
if (!$ok) {
$start -= 1;
$this->Execute("create table $seq (id int)");//was float(53)
$ok = $this->Execute("insert into $seq with (tablock,holdlock) values($start)");
if (!$ok) {
if($this->debug) ADOConnection::outp("<hr>Error: ROLLBACK");
sqlsrv_rollback($this->_connectionID);
return false;
}
}
$num = $this->GetOne("select id from $seq");
sqlsrv_commit($this->_connectionID);
return $num;
}
/**
* Only available to Server 2012 and up
* Cannot do this the normal adodb way by trapping an error if the
* sequence does not exist because sql server will auto create a
* sequence with the starting number of -9223372036854775808
*/
function GenID2012($seq='adodbseq',$start=1)
{
/*
* First time in create an array of sequence names that we
* can use in later requests to see if the sequence exists
* the overhead is creating a list of sequences every time
* we need access to at least 1. If we really care about
* performance, we could maybe flag a 'nocheck' class variable
*/
if (!$this->sequences){
$sql = "SELECT name FROM sys.sequences";
$this->sequences = $this->GetCol($sql);
}
if (!is_array($this->sequences)
|| is_array($this->sequences) && !in_array($seq,$this->sequences)){
$this->CreateSequence2012($seq, $start);
}
$num = $this->GetOne("SELECT NEXT VALUE FOR $seq");
return $num;
}
// Format date column in sql string given an input format that understands Y M D
function SQLDate($fmt, $col=false)
{
if (!$col) $col = $this->sysTimeStamp;
$s = '';
$ConvertableFmt=array(
"m/d/Y"=>101,"m/d/y"=>101 // US
,"Y.m.d"=>102,"y/m/d"=>102 // ANSI
,"d/m/Y"=>103,"d/m/y"=>103 // French /english
,"d.m.Y"=>104,"d.m.y"=>104 // German
,"d-m-Y"=>105,"d-m-y"=>105 // Italian
,"m-d-Y"=>110,"m-d-y"=>110 // US Dash
,"Y/m/d"=>111,"y/m/d"=>111 // Japan
,"Ymd"=>112,"ymd"=>112 // ISO
,"H:i:s"=>108 // Time
);
if(key_exists($fmt,$ConvertableFmt))
return "convert (varchar ,$col,".$ConvertableFmt[$fmt].")";
$len = strlen($fmt);
for ($i=0; $i < $len; $i++) {
if ($s) $s .= '+';
$ch = $fmt[$i];
switch($ch) {
case 'Y':
case 'y':
$s .= "datename(yyyy,$col)";
break;
case 'M':
$s .= "convert(char(3),$col,0)";
break;
case 'm':
$s .= "replace(str(month($col),2),' ','0')";
break;
case 'Q':
case 'q':
$s .= "datename(quarter,$col)";
break;
case 'D':
case 'd':
$s .= "replace(str(day($col),2),' ','0')";
break;
case 'h':
$s .= "substring(convert(char(14),$col,0),13,2)";
break;
case 'H':
$s .= "replace(str(datepart(hh,$col),2),' ','0')";
break;
case 'i':
$s .= "replace(str(datepart(mi,$col),2),' ','0')";
break;
case 's':
$s .= "replace(str(datepart(ss,$col),2),' ','0')";
break;
case 'a':
case 'A':
$s .= "substring(convert(char(19),$col,0),18,2)";
break;
case 'l':
$s .= "datename(dw,$col)";
break;
default:
if ($ch == '\\') {
$i++;
$ch = substr($fmt,$i,1);
}
$s .= $this->qstr($ch);
break;
}
}
return $s;
}
function BeginTrans()
{
if ($this->transOff) return true;
$this->transCnt += 1;
if ($this->debug) ADOConnection::outp('<hr>begin transaction');
sqlsrv_begin_transaction($this->_connectionID);
return true;
}
function CommitTrans($ok=true)
{
if ($this->transOff) return true;
if ($this->debug) ADOConnection::outp('<hr>commit transaction');
if (!$ok) return $this->RollbackTrans();
if ($this->transCnt) $this->transCnt -= 1;
sqlsrv_commit($this->_connectionID);
return true;
}
function RollbackTrans()
{
if ($this->transOff) return true;
if ($this->debug) ADOConnection::outp('<hr>rollback transaction');
if ($this->transCnt) $this->transCnt -= 1;
sqlsrv_rollback($this->_connectionID);
return true;
}
function SetTransactionMode( $transaction_mode )
{
$this->_transmode = $transaction_mode;
if (empty($transaction_mode)) {
$this->Execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
return;
}
if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
$this->Execute("SET TRANSACTION ".$transaction_mode);
}
/*
Usage:
$this->BeginTrans();
$this->RowLock('table1,table2','table1.id=33 and table2.id=table1.id'); # lock row 33 for both tables
# some operation on both tables table1 and table2
$this->CommitTrans();
See http://www.swynk.com/friends/achigrik/SQL70Locks.asp
*/
function RowLock($tables,$where,$col='1 as adodbignore')
{
if ($col == '1 as adodbignore') $col = 'top 1 null as ignore';
if (!$this->transCnt) $this->BeginTrans();
return $this->GetOne("select $col from $tables with (ROWLOCK,HOLDLOCK) where $where");
}
function SelectDB($dbName)
{
$this->database = $dbName;
$this->databaseName = $dbName; # obsolete, retained for compat with older adodb versions
if ($this->_connectionID) {
$rs = $this->Execute('USE '.$dbName);
if($rs) {
return true;
} else return false;
}
else return false;
}
function ErrorMsg()
{
$retErrors = sqlsrv_errors(SQLSRV_ERR_ALL);
if($retErrors != null) {
foreach($retErrors as $arrError) {
$this->_errorMsg .= "SQLState: ".$arrError[ 'SQLSTATE']."\n";
$this->_errorMsg .= "Error Code: ".$arrError[ 'code']."\n";
$this->_errorMsg .= "Message: ".$arrError[ 'message']."\n";
}
}
return $this->_errorMsg;
}
function ErrorNo()
{
$err = sqlsrv_errors(SQLSRV_ERR_ALL);
if ($err && $err[0])
return $err[0]['code'];
else
return 0;
}
// returns true or false
function _connect($argHostname, $argUsername, $argPassword, $argDatabasename)
{
if (!function_exists('sqlsrv_connect'))
{
if ($this->debug)
ADOConnection::outp('Microsoft SQL Server native driver (mssqlnative) not installed');
return null;
}
if (!empty($this->port))
/*
* Port uses a comma
*/
$argHostname .= ",".$this->port;
$connectionInfo = $this->connectionInfo;
$connectionInfo["Database"] = $argDatabasename;
if ((string)$argUsername != '' || (string)$argPassword != '')
{
/*
* If they pass either a userid or password, we assume
* SQL Server authentication
*/
$connectionInfo["UID"] = $argUsername;
$connectionInfo["PWD"] = $argPassword;
if ($this->debug)
ADOConnection::outp('userid or password supplied, attempting connection with SQL Server Authentication');
}
else
{
/*
* If they don't pass either value, we won't add them to the
* connection parameters. This will then force an attempt
* to use windows authentication
*/
if ($this->debug)
ADOConnection::outp('No userid or password supplied, attempting connection with Windows Authentication');
}
/*
* Now merge in the passed connection parameters setting
*/
foreach ($this->connectionParameters as $options)
{
foreach($options as $parameter=>$value)
$connectionInfo[$parameter] = $value;
}
if ($this->debug) ADOConnection::outp("connecting to host: $argHostname params: ".var_export($connectionInfo,true));
if(!($this->_connectionID = @sqlsrv_connect($argHostname,$connectionInfo)))
{
if ($this->debug)
ADOConnection::outp( 'Connection Failed: '.print_r( sqlsrv_errors(), true));
return false;
}
$this->ServerVersion();
return true;
}
// returns true or false
function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
{
//return null;//not implemented. NOTE: Persistent connections have no effect if PHP is used as a CGI program. (FastCGI!)
return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabasename);
}
function Prepare($sql)
{
return $sql; // prepare does not work properly with bind parameters as bind parameters are managed by sqlsrv_prepare!
}
// returns concatenated string
// MSSQL requires integers to be cast as strings
// automatically cast every datatype to VARCHAR(255)
// @author David Rogers (introspectshun)
function Concat()
{
$s = "";
$arr = func_get_args();
// Split single record on commas, if possible
if (sizeof($arr) == 1) {
foreach ($arr as $arg) {
$args = explode(',', $arg);
}
$arr = $args;
}
array_walk(
$arr,
function(&$value, $key) {
$value = "CAST(" . $value . " AS VARCHAR(255))";
}
);
$s = implode('+',$arr);
if (sizeof($arr) > 0) return "$s";
return '';
}
/*
Unfortunately, it appears that mssql cannot handle varbinary > 255 chars
So all your blobs must be of type "image".
Remember to set in php.ini the following...
; Valid range 0 - 2147483647. Default = 4096.
mssql.textlimit = 0 ; zero to pass through
; Valid range 0 - 2147483647. Default = 4096.
mssql.textsize = 0 ; zero to pass through
*/
function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
{
if (strtoupper($blobtype) == 'CLOB') {
$sql = "UPDATE $table SET $column='" . $val . "' WHERE $where";
return $this->Execute($sql) != false;
}
$sql = "UPDATE $table SET $column=0x".bin2hex($val)." WHERE $where";
return $this->Execute($sql) != false;
}
// returns query ID if successful, otherwise false
function _query($sql,$inputarr=false)
{
$this->_errorMsg = false;
if (is_array($sql))
$sql = $sql[1];
$insert = false;
// handle native driver flaw for retrieving the last insert ID
if(preg_match('/^\W*insert[\s\w()[\]",.]+values\s*\((?:[^;\']|\'\'|(?:(?:\'\')*\'[^\']+\'(?:\'\')*))*;?$/i', $sql)) {
$insert = true;
$sql .= '; '.$this->identitySQL; // select scope_identity()
}
if($inputarr)
{
/*
* Ensure that the input array is numeric, as required by
* sqlsrv_query. If param() was used to create portable binds
* then the array might be associative
*/
$inputarr = array_values($inputarr);
$rez = sqlsrv_query($this->_connectionID, $sql, $inputarr);
} else {
$rez = sqlsrv_query($this->_connectionID,$sql);
}
if ($this->debug) ADOConnection::outp("<hr>running query: ".var_export($sql,true)."<hr>input array: ".var_export($inputarr,true)."<hr>result: ".var_export($rez,true));
if(!$rez)
$rez = false;
return $rez;
}
// returns true or false
function _close()
{
if ($this->transCnt) {
$this->RollbackTrans();
}
if($this->_connectionID) {
$rez = sqlsrv_close($this->_connectionID);
}
$this->_connectionID = false;
return $rez;
}
function MetaIndexes($table,$primary=false, $owner = false)
{
$table = $this->qstr($table);
$sql = "SELECT i.name AS ind_name, C.name AS col_name, USER_NAME(O.uid) AS Owner, c.colid, k.Keyno,
CASE WHEN I.indid BETWEEN 1 AND 254 AND (I.status & 2048 = 2048 OR I.Status = 16402 AND O.XType = 'V') THEN 1 ELSE 0 END AS IsPK,
CASE WHEN I.status & 2 = 2 THEN 1 ELSE 0 END AS IsUnique
FROM dbo.sysobjects o INNER JOIN dbo.sysindexes I ON o.id = i.id
INNER JOIN dbo.sysindexkeys K ON I.id = K.id AND I.Indid = K.Indid
INNER JOIN dbo.syscolumns c ON K.id = C.id AND K.colid = C.Colid
WHERE LEFT(i.name, 8) <> '_WA_Sys_' AND o.status >= 0 AND O.Name LIKE $table
ORDER BY O.name, I.Name, K.keyno";
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== FALSE) {
$savem = $this->SetFetchMode(FALSE);
}
$rs = $this->Execute($sql);
if (isset($savem)) {
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
if (!is_object($rs)) {
return FALSE;
}
$indexes = array();
while ($row = $rs->FetchRow()) {
if (!$primary && $row[5]) continue;
$indexes[$row[0]]['unique'] = $row[6];
$indexes[$row[0]]['columns'][] = $row[1];
}
return $indexes;
}
function MetaForeignKeys($table, $owner=false, $upper=false)
{
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
$table = $this->qstr(strtoupper($table));
$sql =
"select object_name(constid) as constraint_name,
col_name(fkeyid, fkey) as column_name,
object_name(rkeyid) as referenced_table_name,
col_name(rkeyid, rkey) as referenced_column_name
from sysforeignkeys
where upper(object_name(fkeyid)) = $table
order by constraint_name, referenced_table_name, keyno";
$constraints = $this->GetArray($sql);
$ADODB_FETCH_MODE = $save;
$arr = false;
foreach($constraints as $constr) {
//print_r($constr);
$arr[$constr[0]][$constr[2]][] = $constr[1].'='.$constr[3];
}
if (!$arr) return false;
$arr2 = false;
foreach($arr as $k => $v) {
foreach($v as $a => $b) {
if ($upper) $a = strtoupper($a);
if (is_array($arr2[$a])) { // a previous foreign key was define for this reference table, we merge the new one
$arr2[$a] = array_merge($arr2[$a], $b);
} else {
$arr2[$a] = $b;
}
}
}
return $arr2;
}
//From: Fernando Moreira <FMoreira@imediata.pt>
function MetaDatabases()
{
$this->SelectDB("master");
$rs =& $this->Execute($this->metaDatabasesSQL);
$rows = $rs->GetRows();
$ret = array();
for($i=0;$i<count($rows);$i++) {
$ret[] = $rows[$i][0];
}
$this->SelectDB($this->database);
if($ret)
return $ret;
else
return false;
}
// "Stein-Aksel Basma" <basma@accelero.no>
// tested with MSSQL 2000
function MetaPrimaryKeys($table, $owner=false)
{
global $ADODB_FETCH_MODE;
$schema = '';
$this->_findschema($table,$schema);
if (!$schema) $schema = $this->database;
if ($schema) $schema = "and k.table_catalog like '$schema%'";
$sql = "select distinct k.column_name,ordinal_position from information_schema.key_column_usage k,
information_schema.table_constraints tc
where tc.constraint_name = k.constraint_name and tc.constraint_type =
'PRIMARY KEY' and k.table_name = '$table' $schema order by ordinal_position ";
$savem = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
$a = $this->GetCol($sql);
$ADODB_FETCH_MODE = $savem;
if ($a && sizeof($a)>0) return $a;
$false = false;
return $false;
}
function MetaTables($ttype=false,$showSchema=false,$mask=false)
{
if ($mask) {
$save = $this->metaTablesSQL;
$mask = $this->qstr(($mask));
$this->metaTablesSQL .= " AND name like $mask";
}
$ret = ADOConnection::MetaTables($ttype,$showSchema);
if ($mask) {
$this->metaTablesSQL = $save;
}
return $ret;
}
function MetaColumns($table, $upper=true, $schema=false){
/*
* A simple caching mechanism, to be replaced in ADOdb V6
*/
static $cached_columns = array();
if ($this->cachedSchemaFlush)
$cached_columns = array();
if (array_key_exists($table,$cached_columns)){
return $cached_columns[$table];
}
$this->_findschema($table,$schema);
if ($schema) {
$dbName = $this->database;
$this->SelectDB($schema);
}
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
$rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
if ($schema) {
$this->SelectDB($dbName);
}
if (isset($savem)) $this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
if (!is_object($rs)) {
$false = false;
return $false;
}
$retarr = array();
while (!$rs->EOF){
$fld = new ADOFieldObject();
if (array_key_exists(0,$rs->fields)) {
$fld->name = $rs->fields[0];
$fld->type = $rs->fields[1];
$fld->max_length = $rs->fields[2];
$fld->precision = $rs->fields[3];
$fld->scale = $rs->fields[4];
$fld->not_null =!$rs->fields[5];
$fld->has_default = $rs->fields[6];
$fld->xtype = $rs->fields[7];
$fld->type_length = $rs->fields[8];
$fld->auto_increment= $rs->fields[9];
} else {
$fld->name = $rs->fields['name'];
$fld->type = $rs->fields['type'];
$fld->max_length = $rs->fields['length'];
$fld->precision = $rs->fields['precision'];
$fld->scale = $rs->fields['scale'];
$fld->not_null =!$rs->fields['nullable'];
$fld->has_default = $rs->fields['default_value'];
$fld->xtype = $rs->fields['xtype'];
$fld->type_length = $rs->fields['type_length'];
$fld->auto_increment= $rs->fields['is_identity'];
}
if ($save == ADODB_FETCH_NUM)
$retarr[] = $fld;
else
$retarr[strtoupper($fld->name)] = $fld;
$rs->MoveNext();
}
$rs->Close();
$cached_columns[$table] = $retarr;
return $retarr;
}
/**
* Returns a substring of a varchar type field
*
* The SQL server version varies because the length is mandatory, so
* we append a reasonable string length
*
* @param string $fld The field to sub-string
* @param int $start The start point
* @param int $length An optional length
*
* @return The SQL text
*/
function substr($fld,$start,$length=0)
{
if ($length == 0)
/*
* The length available to varchar is 2GB, but that makes no
* sense in a substring, so I'm going to arbitrarily limit
* the length to 1K, but you could change it if you want
*/
$length = 1024;
$text = "SUBSTRING($fld,$start,$length)";
return $text;
}
/**
* Returns the maximum size of a MetaType C field. Because of the
* database design, SQL Server places no limits on the size of data inserted
* Although the actual limit is 2^31-1 bytes.
*
* @return int
*/
function charMax()
{
return ADODB_STRINGMAX_NOLIMIT;
}
/**
* Returns the maximum size of a MetaType X field. Because of the
* database design, SQL Server places no limits on the size of data inserted
* Although the actual limit is 2^31-1 bytes.
*
* @return int
*/
function textMax()
{
return ADODB_STRINGMAX_NOLIMIT;
}
/**
* Lists procedures, functions and methods in an array.
*
* @param string $procedureNamePattern (optional)
* @param string $catalog (optional)
* @param string $schemaPattern (optional)
* @return array of stored objects in current database.
*
*/
public function metaProcedures($procedureNamePattern = null, $catalog = null, $schemaPattern = null)
{
$metaProcedures = array();
$procedureSQL = '';
$catalogSQL = '';
$schemaSQL = '';
if ($procedureNamePattern)
$procedureSQL = "AND ROUTINE_NAME LIKE " . strtoupper($this->qstr($procedureNamePattern));
if ($catalog)
$catalogSQL = "AND SPECIFIC_SCHEMA=" . strtoupper($this->qstr($catalog));
if ($schemaPattern)
$schemaSQL = "AND ROUTINE_SCHEMA LIKE {$this->qstr($schemaPattern)}";
$fields = " ROUTINE_NAME,ROUTINE_TYPE,ROUTINE_SCHEMA,ROUTINE_CATALOG";
$SQL = "SELECT $fields
FROM {$this->database}.information_schema.routines
WHERE 1=1
$procedureSQL
$catalogSQL
$schemaSQL
ORDER BY ROUTINE_NAME
";
$result = $this->execute($SQL);
if (!$result)
return false;
while ($r = $result->fetchRow()){
if (!isset($r[0]))
/*
* Convert to numeric
*/
$r = array_values($r);
$procedureName = $r[0];
$schemaName = $r[2];
$routineCatalog= $r[3];
$metaProcedures[$procedureName] = array('type'=> $r[1],
'catalog' => $routineCatalog,
'schema' => $schemaName,
'remarks' => '',
);
}
return $metaProcedures;
}
}
/*--------------------------------------------------------------------------------------
Class Name: Recordset
--------------------------------------------------------------------------------------*/
class ADORecordset_mssqlnative extends ADORecordSet {
var $databaseType = "mssqlnative";
var $canSeek = false;
var $fieldOffset = 0;
// _mths works only in non-localised system
/*
* Holds a cached version of the metadata
*/
private $fieldObjects = false;
/*
* Flags if we have retrieved the metadata
*/
private $fieldObjectsRetrieved = false;
/*
* Cross-reference the objects by name for easy access
*/
private $fieldObjectsIndex = array();
/*
* Cross references the dateTime objects for faster decoding
*/
private $dateTimeObjects = array();
/*
* flags that we have dateTimeObjects to handle
*/
private $hasDateTimeObjects = false;
/*
* This is cross reference between how the types are stored
* in SQL Server and their english-language description
* -154 is a time field, see #432
*/
private $_typeConversion = array(
-155 => 'datetimeoffset',
-154 => 'char',
-152 => 'xml',
-151 => 'udt',
-11 => 'uniqueidentifier',
-10 => 'ntext',
-9 => 'nvarchar',
-8 => 'nchar',
-7 => 'bit',
-6 => 'tinyint',
-5 => 'bigint',
-4 => 'image',
-3 => 'varbinary',
-2 => 'timestamp',
-1 => 'text',
1 => 'char',
2 => 'numeric',
3 => 'decimal',
4 => 'int',
5 => 'smallint',
6 => 'float',
7 => 'real',
12 => 'varchar',
91 => 'date',
93 => 'datetime'
);
function __construct($id,$mode=false)
{
if ($mode === false) {
global $ADODB_FETCH_MODE;
$mode = $ADODB_FETCH_MODE;
}
$this->fetchMode = $mode;
parent::__construct($id);
}
function _initrs()
{
$this->_numOfRows = -1;//not supported
// Cache the metadata right now
$this->_fetchField();
}
//Contributed by "Sven Axelsson" <sven.axelsson@bokochwebb.se>
// get next resultset - requires PHP 4.0.5 or later
function NextRecordSet()
{
if (!sqlsrv_next_result($this->_queryID)) return false;
$this->_inited = false;
$this->bind = false;
$this->_currentRow = -1;
$this->Init();
return true;
}
/* Use associative array to get fields array */
function Fields($colname)
{
if (!is_array($this->fields))
/*
* Too early
*/
return;
if ($this->fetchMode != ADODB_FETCH_NUM)
return $this->fields[$colname];
if (!$this->bind) {
$this->bind = array();
for ($i=0; $i < $this->_numOfFields; $i++) {
$o = $this->FetchField($i);
$this->bind[strtoupper($o->name)] = $i;
}
}
return $this->fields[$this->bind[strtoupper($colname)]];
}
/**
* Returns: an object containing field information.
*
* Get column information in the Recordset object. fetchField()
* can be used in order to obtain information about fields in a
* certain query result. If the field offset isn't specified,
* the next field that wasn't yet retrieved by fetchField()
* is retrieved.
*
* $param int $fieldOffset (optional default=-1 for all
* @return mixed an ADOFieldObject, or array of objects
*/
private function _fetchField($fieldOffset = -1)
{
if ($this->fieldObjectsRetrieved){
if ($this->fieldObjects) {
/*
* Already got the information
*/
if ($fieldOffset == -1)
return $this->fieldObjects;
else
return $this->fieldObjects[$fieldOffset];
}
else
/*
* No metadata available
*/
return false;
}
$this->fieldObjectsRetrieved = true;
/*
* Retrieve all metadata in one go. This is always returned as a
* numeric array.
*/
$fieldMetaData = sqlsrv_field_metadata($this->_queryID);
if (!$fieldMetaData)
/*
* Not a statement that gives us metaData
*/
return false;
$this->_numOfFields = count($fieldMetaData);
foreach ($fieldMetaData as $key=>$value)
{
$fld = new ADOFieldObject;
/*
* Caution - keys are case-sensitive, must respect
* casing of values
*/
$fld->name = $value['Name'];
$fld->max_length = $value['Size'];
$fld->column_source = $value['Name'];
$fld->type = $this->_typeConversion[$value['Type']];
$this->fieldObjects[$key] = $fld;
$this->fieldObjectsIndex[$fld->name] = $key;
}
if ($fieldOffset == -1)
return $this->fieldObjects;
return $this->fieldObjects[$fieldOffset];
}
/*
* Fetchfield copies the oracle method, it loads the field information
* into the _fieldobjs array once, to save multiple calls to the
* sqlsrv_field_metadata function
*
* @param int $fieldOffset (optional)
*
* @return adoFieldObject
*
* @author KM Newnham
* @date 02/20/2013
*/
function fetchField($fieldOffset = -1)
{
return $this->fieldObjects[$fieldOffset];
}
function _seek($row)
{
return false;//There is no support for cursors in the driver at this time. All data is returned via forward-only streams.
}
// speedup
function MoveNext()
{
if ($this->EOF)
return false;
$this->_currentRow++;
if ($this->_fetch())
return true;
$this->EOF = true;
return false;
}
function _fetch($ignore_fields=false)
{
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
if ($this->fetchMode & ADODB_FETCH_NUM)
$this->fields = @sqlsrv_fetch_array($this->_queryID,SQLSRV_FETCH_BOTH);
else
$this->fields = @sqlsrv_fetch_array($this->_queryID,SQLSRV_FETCH_ASSOC);
if (is_array($this->fields))
{
if (ADODB_ASSOC_CASE == ADODB_ASSOC_CASE_LOWER)
$this->fields = array_change_key_case($this->fields,CASE_LOWER);
else if (ADODB_ASSOC_CASE == ADODB_ASSOC_CASE_UPPER)
$this->fields = array_change_key_case($this->fields,CASE_UPPER);
}
}
else
$this->fields = @sqlsrv_fetch_array($this->_queryID,SQLSRV_FETCH_NUMERIC);
if (!$this->fields)
return false;
return $this->fields;
}
/**
* close() only needs to be called if you are worried about using too much
* memory while your script is running. All associated result memory for
* the specified result identifier will automatically be freed.
*
* @return bool tru if we succeeded in closing down
*/
function _close()
{
/*
* If we are closing down a failed query, collect any
* error messages. This is a hack fix to the "close too early"
* problem so this might go away later
*/
$this->connection->errorMsg();
if(is_resource($this->_queryID)) {
$rez = sqlsrv_free_stmt($this->_queryID);
$this->_queryID = false;
return $rez;
}
return true;
}
}
class ADORecordSet_array_mssqlnative extends ADORecordSet_array {}
/*
Code Example 1:
select object_name(constid) as constraint_name,
object_name(fkeyid) as table_name,
col_name(fkeyid, fkey) as column_name,
object_name(rkeyid) as referenced_table_name,
col_name(rkeyid, rkey) as referenced_column_name
from sysforeignkeys
where object_name(fkeyid) = x
order by constraint_name, table_name, referenced_table_name, keyno
Code Example 2:
select constraint_name,
column_name,
ordinal_position
from information_schema.key_column_usage
where constraint_catalog = db_name()
and table_name = x
order by constraint_name, ordinal_position
http://www.databasejournal.com/scripts/article.php/1440551
*/
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