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adodb-oci8.inc.php
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adodb-oci8.inc.php
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<?php
/**
* FileDescription
*
* This file is part of ADOdb, a Database Abstraction Layer library for PHP.
*
* @package ADOdb
* @link https://adodb.org Project's web site and documentation
* @link https://github.com/ADOdb/ADOdb Source code and issue tracker
*
* The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
* any later version. This means you can use it in proprietary products.
* See the LICENSE.md file distributed with this source code for details.
* @license BSD-3-Clause
* @license LGPL-2.1-or-later
*
* @copyright 2000-2013 John Lim
* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
* @author John Lim
* @author George Fourlanos <fou@infomap.gr>
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
/*
NLS_Date_Format
Allows you to use a date format other than the Oracle Lite default. When a literal
character string appears where a date value is expected, the Oracle Lite database
tests the string to see if it matches the formats of Oracle, SQL-92, or the value
specified for this parameter in the POLITE.INI file. Setting this parameter also
defines the default format used in the TO_CHAR or TO_DATE functions when no
other format string is supplied.
For Oracle the default is dd-mon-yy or dd-mon-yyyy, and for SQL-92 the default is
yy-mm-dd or yyyy-mm-dd.
Using 'RR' in the format forces two-digit years less than or equal to 49 to be
interpreted as years in the 21st century (2000-2049), and years over 50 as years in
the 20th century (1950-1999). Setting the RR format as the default for all two-digit
year entries allows you to become year-2000 compliant. For example:
NLS_DATE_FORMAT='RR-MM-DD'
You can also modify the date format using the ALTER SESSION command.
*/
# define the LOB descriptor type for the given type
# returns false if no LOB descriptor
function oci_lob_desc($type) {
switch ($type) {
case OCI_B_BFILE: return OCI_D_FILE;
case OCI_B_CFILEE: return OCI_D_FILE;
case OCI_B_CLOB: return OCI_D_LOB;
case OCI_B_BLOB: return OCI_D_LOB;
case OCI_B_ROWID: return OCI_D_ROWID;
}
return false;
}
class ADODB_oci8 extends ADOConnection {
var $databaseType = 'oci8';
var $dataProvider = 'oci8';
var $replaceQuote = "''"; // string to use to replace quotes
var $concat_operator='||';
var $sysDate = "TRUNC(SYSDATE)";
var $sysTimeStamp = 'SYSDATE'; // requires oracle 9 or later, otherwise use SYSDATE
var $metaDatabasesSQL = "SELECT USERNAME FROM ALL_USERS WHERE USERNAME NOT IN ('SYS','SYSTEM','DBSNMP','OUTLN') ORDER BY 1";
var $_stmt;
var $_commit = OCI_COMMIT_ON_SUCCESS;
var $_initdate = true; // init date to YYYY-MM-DD
var $metaTablesSQL = "select table_name,table_type from cat where table_type in ('TABLE','VIEW') and table_name not like 'BIN\$%'"; // bin$ tables are recycle bin tables
var $metaColumnsSQL = "select cname,coltype,width, SCALE, PRECISION, NULLS, DEFAULTVAL from col where tname='%s' order by colno"; //changed by smondino@users.sourceforge. net
var $metaColumnsSQL2 = "select column_name,data_type,data_length, data_scale, data_precision,
case when nullable = 'Y' then 'NULL'
else 'NOT NULL' end as nulls,
data_default from all_tab_cols
where owner='%s' and table_name='%s' order by column_id"; // when there is a schema
var $_bindInputArray = true;
var $hasGenID = true;
var $_genIDSQL = "SELECT (%s.nextval) FROM DUAL";
var $_genSeqSQL = "
DECLARE
PRAGMA AUTONOMOUS_TRANSACTION;
BEGIN
execute immediate 'CREATE SEQUENCE %s START WITH %s';
END;
";
var $_dropSeqSQL = "DROP SEQUENCE %s";
var $hasAffectedRows = true;
var $random = "abs(mod(DBMS_RANDOM.RANDOM,10000001)/10000000)";
var $noNullStrings = false;
var $connectSID = false;
var $_bind = false;
var $_nestedSQL = true;
var $_getarray = false; // currently not working
var $leftOuter = ''; // oracle wierdness, $col = $value (+) for LEFT OUTER, $col (+)= $value for RIGHT OUTER
var $session_sharing_force_blob = false; // alter session on updateblob if set to true
var $firstrows = true; // enable first rows optimization on SelectLimit()
var $selectOffsetAlg1 = 1000; // when to use 1st algorithm of selectlimit.
var $NLS_DATE_FORMAT = 'YYYY-MM-DD'; // To include time, use 'RRRR-MM-DD HH24:MI:SS'
var $dateformat = 'YYYY-MM-DD'; // DBDate format
var $useDBDateFormatForTextInput=false;
var $datetime = false; // MetaType('DATE') returns 'D' (datetime==false) or 'T' (datetime == true)
var $_refLOBs = array();
/*
* Legacy compatibility for sequence names for emulated auto-increments
*/
public $useCompactAutoIncrements = false;
/*
* Defines the schema name for emulated auto-increment columns
*/
public $schema = false;
/*
* Defines the prefix for emulated auto-increment columns
*/
public $seqPrefix = 'SEQ_';
/* function MetaColumns($table, $normalize=true) added by smondino@users.sourceforge.net*/
function MetaColumns($table, $normalize=true)
{
global $ADODB_FETCH_MODE;
$schema = '';
$this->_findschema($table, $schema);
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== false) {
$savem = $this->SetFetchMode(false);
}
if ($schema){
$rs = $this->Execute(sprintf($this->metaColumnsSQL2, strtoupper($schema), strtoupper($table)));
}
else {
$rs = $this->Execute(sprintf($this->metaColumnsSQL,strtoupper($table)));
}
if (isset($savem)) {
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
if (!$rs) {
return false;
}
$retarr = array();
while (!$rs->EOF) {
$fld = new ADOFieldObject();
$fld->name = $rs->fields[0];
$fld->type = $rs->fields[1];
$fld->max_length = $rs->fields[2];
$fld->scale = $rs->fields[3];
if ($rs->fields[1] == 'NUMBER') {
if ($rs->fields[3] == 0) {
$fld->type = 'INT';
}
$fld->max_length = $rs->fields[4];
}
$fld->not_null = (strncmp($rs->fields[5], 'NOT',3) === 0);
$fld->binary = (strpos($fld->type,'BLOB') !== false);
$fld->default_value = $rs->fields[6];
if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) {
$retarr[] = $fld;
}
else {
$retarr[strtoupper($fld->name)] = $fld;
}
$rs->MoveNext();
}
$rs->Close();
if (empty($retarr)) {
return false;
}
return $retarr;
}
function Time()
{
$rs = $this->Execute("select TO_CHAR($this->sysTimeStamp,'YYYY-MM-DD HH24:MI:SS') from dual");
if ($rs && !$rs->EOF) {
return $this->UnixTimeStamp(reset($rs->fields));
}
return false;
}
/**
* Connect to database.
*
* Multiple modes of connection are supported:
*
* 1. Local Database
* $conn->connect(false, 'scott', 'tiger');
*
* 2. From tnsnames.ora
* $conn->connect($tnsname, 'scott', 'tiger');
* OR
* $conn->connect(false, 'scott', 'tiger', $tnsname);
*
* 3. Server + service name
* $conn->connect($serveraddress, 'scott, 'tiger', $service_name);
*
* 4. Server + SID
* $conn->connectSID = true;
* $conn->Connect($serveraddress,'scott,'tiger',$SID);
* OR
* $conn->Connect($serveraddress,'scott,'tiger',"SID=$SID");
*
* By default, the Session Mode will be set to OCI_DEFAULT, but it is
* possible to use one of other modes referenced in the
* {@link https://www.php.net/manual/en/function.oci-connect oci8_connect()}
* function's documentation, like this:
* $conn->setConnectionParameter('session_mode', OCI_SYSDBA);
* $conn->connect(...);
*
* @param string|false $argHostname DB server hostname or TNS name
* @param string $argUsername
* @param string $argPassword
* @param string $argDatabasename Service name, SID (defaults to null)
* @param int $mode Connection mode, defaults to 0
* (0 = non-persistent, 1 = persistent, 2 = force new connection)
*
* @return bool
*/
function _connect($argHostname, $argUsername, $argPassword, $argDatabasename=null, $mode=0)
{
if (!function_exists('oci_pconnect')) {
return null;
}
#adodb_backtrace();
$this->_errorMsg = false;
$this->_errorCode = false;
if($argHostname) { // added by Jorma Tuomainen <jorma.tuomainen@ppoy.fi>
if (empty($argDatabasename)) {
$argDatabasename = $argHostname;
}
else {
if(strpos($argHostname,":")) {
$argHostinfo=explode(":",$argHostname);
$argHostname=$argHostinfo[0];
$argHostport=$argHostinfo[1];
} else {
$argHostport = empty($this->port)? "1521" : $this->port;
}
if (strncasecmp($argDatabasename,'SID=',4) == 0) {
$argDatabasename = substr($argDatabasename,4);
$this->connectSID = true;
}
$sidOrService = $this->connectSID ? 'SID' : 'SERVICE_NAME';
$argDatabasename = "(DESCRIPTION="
. "(ADDRESS=(PROTOCOL=TCP)(HOST=$argHostname)(PORT=$argHostport))"
. "(CONNECT_DATA=($sidOrService=$argDatabasename)))";
}
}
// Determine the connect function to use based on connection mode
switch ($mode) {
case 1: $ociConnectFunction = 'oci_pconnect'; break;
case 2: $ociConnectFunction = 'oci_new_connect'; break;
default: $ociConnectFunction = 'oci_connect';
}
// Process the connection parameters
$sessionMode = OCI_DEFAULT;
$clientIdentifier = '';
foreach ($this->connectionParameters as $options) {
foreach($options as $parameter => $value) {
switch ($parameter) {
case 'session_mode':
$sessionMode = $value;
break;
case 'client_identifier':
$clientIdentifier = $value;
break;
}
}
}
$this->_connectionID = $ociConnectFunction(
$argUsername,
$argPassword,
$argDatabasename,
$this->charSet ?: '',
$sessionMode
);
if (!$this->_connectionID) {
return false;
}
// Set client identifier, but see documentation for limitations
if ($clientIdentifier) {
oci_set_client_identifier($this->_connectionID, $clientIdentifier);
}
if ($mode == 1 && $this->autoRollback ) {
oci_rollback($this->_connectionID);
}
if ($this->_initdate) {
$this->Execute("ALTER SESSION SET NLS_DATE_FORMAT='".$this->NLS_DATE_FORMAT."'");
}
return true;
}
function ServerInfo()
{
$arr['compat'] = $this->GetOne('select value from sys.database_compatible_level');
$arr['description'] = @oci_server_version($this->_connectionID);
$arr['version'] = ADOConnection::_findvers($arr['description']);
return $arr;
}
// returns true or false
function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
{
return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabasename,1);
}
// returns true or false
function _nconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
{
return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabasename,2);
}
function _affectedrows()
{
if (is_resource($this->_stmt)) {
return @oci_num_rows($this->_stmt);
}
return 0;
}
function IfNull( $field, $ifNull )
{
return " NVL($field, $ifNull) "; // if Oracle
}
protected function _insertID($table = '', $column = '')
{
if ($this->schema)
{
$t = strpos($table,'.');
if ($t !== false)
$tab = substr($table,$t+1);
else
$tab = $table;
if ($this->useCompactAutoIncrements)
$tab = sprintf('%u',crc32(strtolower($tab)));
$seqname = $this->schema.'.'.$this->seqPrefix.$tab;
}
else
{
if ($this->useCompactAutoIncrements)
$table = sprintf('%u',crc32(strtolower($table)));
$seqname = $this->seqPrefix.$table;
}
if (strlen($seqname) > 30)
/*
* We cannot successfully identify the sequence
*/
return false;
return $this->getOne("SELECT $seqname.currval FROM dual");
}
// format and return date string in database date format
function DBDate($d,$isfld=false)
{
if (empty($d) && $d !== 0) {
return 'null';
}
if ($isfld) {
$d = _adodb_safedate($d);
return 'TO_DATE('.$d.",'".$this->dateformat."')";
}
if (is_string($d)) {
$d = ADORecordSet::UnixDate($d);
}
if (is_object($d)) {
$ds = $d->format($this->fmtDate);
}
else {
$ds = date($this->fmtDate,$d);
}
return "TO_DATE(".$ds.",'".$this->dateformat."')";
}
function BindDate($d)
{
$d = ADOConnection::DBDate($d);
if (strncmp($d, "'", 1)) {
return $d;
}
return substr($d, 1, strlen($d)-2);
}
function BindTimeStamp($ts)
{
if (empty($ts) && $ts !== 0) {
return 'null';
}
if (is_string($ts)) {
$ts = ADORecordSet::UnixTimeStamp($ts);
}
if (is_object($ts)) {
$tss = $ts->format("'Y-m-d H:i:s'");
}
else {
$tss = date("'Y-m-d H:i:s'",$ts);
}
return $tss;
}
// format and return date string in database timestamp format
function DBTimeStamp($ts,$isfld=false)
{
if (empty($ts) && $ts !== 0) {
return 'null';
}
if ($isfld) {
return 'TO_DATE(substr('.$ts.",1,19),'RRRR-MM-DD, HH24:MI:SS')";
}
if (is_string($ts)) {
$ts = ADORecordSet::UnixTimeStamp($ts);
}
if (is_object($ts)) {
$tss = $ts->format("'Y-m-d H:i:s'");
}
else {
$tss = date("'Y-m-d H:i:s'",$ts);
}
return 'TO_DATE('.$tss.",'RRRR-MM-DD, HH24:MI:SS')";
}
function RowLock($tables,$where,$col='1 as adodbignore')
{
if ($this->autoCommit) {
$this->BeginTrans();
}
return $this->GetOne("select $col from $tables where $where for update");
}
function MetaTables($ttype=false,$showSchema=false,$mask=false)
{
if ($mask) {
$save = $this->metaTablesSQL;
$mask = $this->qstr(strtoupper($mask));
$this->metaTablesSQL .= " AND upper(table_name) like $mask";
}
$ret = ADOConnection::MetaTables($ttype,$showSchema);
if ($mask) {
$this->metaTablesSQL = $save;
}
return $ret;
}
// Mark Newnham
function MetaIndexes ($table, $primary = FALSE, $owner=false)
{
// save old fetch mode
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== FALSE) {
$savem = $this->SetFetchMode(FALSE);
}
// get index details
$table = strtoupper($table);
// get Primary index
$primary_key = '';
$rs = $this->Execute(sprintf("SELECT * FROM ALL_CONSTRAINTS WHERE UPPER(TABLE_NAME)='%s' AND CONSTRAINT_TYPE='P'",$table));
if (!is_object($rs)) {
if (isset($savem)) {
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
return false;
}
if ($row = $rs->FetchRow()) {
$primary_key = $row[1]; //constraint_name
}
if ($primary==TRUE && $primary_key=='') {
if (isset($savem)) {
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
return false; //There is no primary key
}
$rs = $this->Execute(sprintf("SELECT ALL_INDEXES.INDEX_NAME, ALL_INDEXES.UNIQUENESS, ALL_IND_COLUMNS.COLUMN_POSITION, ALL_IND_COLUMNS.COLUMN_NAME FROM ALL_INDEXES,ALL_IND_COLUMNS WHERE UPPER(ALL_INDEXES.TABLE_NAME)='%s' AND ALL_IND_COLUMNS.INDEX_NAME=ALL_INDEXES.INDEX_NAME",$table));
if (!is_object($rs)) {
if (isset($savem)) {
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
return false;
}
$indexes = array ();
// parse index data into array
while ($row = $rs->FetchRow()) {
if ($primary && $row[0] != $primary_key) {
continue;
}
if (!isset($indexes[$row[0]])) {
$indexes[$row[0]] = array(
'unique' => ($row[1] == 'UNIQUE'),
'columns' => array()
);
}
$indexes[$row[0]]['columns'][$row[2] - 1] = $row[3];
}
// sort columns by order in the index
foreach ( array_keys ($indexes) as $index ) {
ksort ($indexes[$index]['columns']);
}
if (isset($savem)) {
$this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
}
return $indexes;
}
function BeginTrans()
{
if ($this->transOff) {
return true;
}
$this->transCnt += 1;
$this->autoCommit = false;
$this->_commit = OCI_DEFAULT;
if ($this->_transmode) {
$ok = $this->Execute("SET TRANSACTION ".$this->_transmode);
}
else {
$ok = true;
}
return (bool)$ok;
}
function CommitTrans($ok=true)
{
if ($this->transOff) {
return true;
}
if (!$ok) {
return $this->RollbackTrans();
}
if ($this->transCnt) {
$this->transCnt -= 1;
}
$ret = oci_commit($this->_connectionID);
$this->_commit = OCI_COMMIT_ON_SUCCESS;
$this->autoCommit = true;
return $ret;
}
function RollbackTrans()
{
if ($this->transOff) {
return true;
}
if ($this->transCnt) {
$this->transCnt -= 1;
}
$ret = oci_rollback($this->_connectionID);
$this->_commit = OCI_COMMIT_ON_SUCCESS;
$this->autoCommit = true;
return $ret;
}
function SelectDB($dbName)
{
return false;
}
function ErrorMsg()
{
if ($this->_errorMsg !== false) {
return $this->_errorMsg;
}
if (is_resource($this->_stmt)) {
$arr = @oci_error($this->_stmt);
}
if (empty($arr)) {
if (is_resource($this->_connectionID)) {
$arr = @oci_error($this->_connectionID);
}
else {
$arr = @oci_error();
}
if ($arr === false) {
return '';
}
}
$this->_errorMsg = $arr['message'];
$this->_errorCode = $arr['code'];
return $this->_errorMsg;
}
function ErrorNo()
{
if ($this->_errorCode !== false) {
return $this->_errorCode;
}
if (is_resource($this->_stmt)) {
$arr = @oci_error($this->_stmt);
}
if (empty($arr)) {
$arr = @oci_error($this->_connectionID);
if ($arr == false) {
$arr = @oci_error();
}
if ($arr == false) {
return '';
}
}
$this->_errorMsg = $arr['message'];
$this->_errorCode = $arr['code'];
return $arr['code'];
}
/**
* Format date column in sql string given an input format that understands Y M D
*/
function SQLDate($fmt, $col=false)
{
if (!$col) {
$col = $this->sysTimeStamp;
}
$s = 'TO_CHAR('.$col.",'";
$len = strlen($fmt);
for ($i=0; $i < $len; $i++) {
$ch = $fmt[$i];
switch($ch) {
case 'Y':
case 'y':
$s .= 'YYYY';
break;
case 'Q':
case 'q':
$s .= 'Q';
break;
case 'M':
$s .= 'Mon';
break;
case 'm':
$s .= 'MM';
break;
case 'D':
case 'd':
$s .= 'DD';
break;
case 'H':
$s.= 'HH24';
break;
case 'h':
$s .= 'HH';
break;
case 'i':
$s .= 'MI';
break;
case 's':
$s .= 'SS';
break;
case 'a':
case 'A':
$s .= 'AM';
break;
case 'w':
$s .= 'D';
break;
case 'l':
$s .= 'DAY';
break;
case 'W':
$s .= 'WW';
break;
default:
// handle escape characters...
if ($ch == '\\') {
$i++;
$ch = substr($fmt,$i,1);
}
if (strpos('-/.:;, ',$ch) !== false) {
$s .= $ch;
}
else {
$s .= '"'.$ch.'"';
}
}
}
return $s. "')";
}
function GetRandRow($sql, $arr = false)
{
$sql = "SELECT * FROM ($sql ORDER BY dbms_random.value) WHERE rownum = 1";
return $this->GetRow($sql,$arr);
}
/**
* This algorithm makes use of
*
* a. FIRST_ROWS hint
* The FIRST_ROWS hint explicitly chooses the approach to optimize response
* time, that is, minimum resource usage to return the first row. Results
* will be returned as soon as they are identified.
*
* b. Uses rownum tricks to obtain only the required rows from a given offset.
* As this uses complicated sql statements, we only use this if $offset >= 100.
* This idea by Tomas V V Cox.
*
* This implementation does not appear to work with oracle 8.0.5 or earlier.
* Comment out this function then, and the slower SelectLimit() in the base
* class will be used.
*
* Note: FIRST_ROWS hinting is only used if $sql is a string; when
* processing a prepared statement's handle, no hinting is performed.
*/
function SelectLimit($sql,$nrows=-1,$offset=-1, $inputarr=false,$secs2cache=0)
{
$nrows = (int) $nrows;
$offset = (int) $offset;
// Since the methods used to limit the number of returned rows rely
// on modifying the provided SQL query, we can't work with prepared
// statements so we just extract the SQL string.
if(is_array($sql)) {
$sql = $sql[0];
}
// seems that oracle only supports 1 hint comment in 8i
if ($this->firstrows) {
if ($nrows > 500 && $nrows < 1000) {
$hint = "FIRST_ROWS($nrows)";
}
else {
$hint = 'FIRST_ROWS';
}
if (strpos($sql,'/*+') !== false) {
$sql = str_replace('/*+ ',"/*+$hint ",$sql);
}
else {
$sql = preg_replace('/^[ \t\n]*select/i',"SELECT /*+$hint*/",$sql);
}
$hint = "/*+ $hint */";
} else {
$hint = '';
}
// If non-bound statement, $inputarr is false
if (!$inputarr) {
$inputarr = array();
}
if ($offset == -1 || ($offset < $this->selectOffsetAlg1 && 0 < $nrows && $nrows < 1000)) {
if ($nrows > 0) {
if ($offset > 0) {
$nrows += $offset;
}
$sql = "select * from (".$sql.") where rownum <= :adodb_offset";
$inputarr['adodb_offset'] = $nrows;
$nrows = -1;
}
// note that $nrows = 0 still has to work ==> no rows returned
return ADOConnection::SelectLimit($sql, $nrows, $offset, $inputarr, $secs2cache);
} else {
// Algorithm by Tomas V V Cox, from PEAR DB oci8.php
// Let Oracle return the name of the columns
$q_fields = "SELECT * FROM (".$sql.") WHERE NULL = NULL";
if (! $stmt_arr = $this->Prepare($q_fields)) {
return false;
}
$stmt = $stmt_arr[1];
foreach($inputarr as $k => $v) {
$i = 0;
if ($this->databaseType == 'oci8po') {
$bv_name = ":" . $i++;
} else {
$bv_name = ":" . $k;
}
if (is_array($v)) {
// suggested by g.giunta@libero.
if (sizeof($v) == 2) {
oci_bind_by_name($stmt, $bv_name, $inputarr[$k][0], $v[1]);
} else {
oci_bind_by_name($stmt, $bv_name, $inputarr[$k][0], $v[1], $v[2]);
}
} else {
$len = -1;
if ($v === ' ') {
$len = 1;
}
if (isset($bindarr)) {
// prepared sql, so no need to oci_bind_by_name again
$bindarr[$k] = $v;
} else {
// dynamic sql, so rebind every time
oci_bind_by_name($stmt, $bv_name, $inputarr[$k], $len);
}
}
}
if (!oci_execute($stmt, OCI_DEFAULT)) {
oci_free_statement($stmt);
return false;
}
$ncols = oci_num_fields($stmt);
for ( $i = 1; $i <= $ncols; $i++ ) {
$cols[] = '"'.oci_field_name($stmt, $i).'"';
}
$result = false;
oci_free_statement($stmt);
$fields = implode(',', $cols);
if ($nrows <= 0) {
$nrows = 999999999999;
}
else {
$nrows += $offset;
}
$offset += 1; // in Oracle rownum starts at 1
$sql = "SELECT $hint $fields FROM".
"(SELECT rownum as adodb_rownum, $fields FROM".
" ($sql) WHERE rownum <= :adodb_nrows".
") WHERE adodb_rownum >= :adodb_offset";
$inputarr['adodb_nrows'] = $nrows;
$inputarr['adodb_offset'] = $offset;
if ($secs2cache > 0) {
$rs = $this->CacheExecute($secs2cache, $sql,$inputarr);
}
else {
$rs = $this->Execute($sql, $inputarr);
}
return $rs;
}
}
/**
* Usage:
* Store BLOBs and CLOBs
*
* Example: to store $var in a blob
* $conn->Execute('insert into TABLE (id,ablob) values(12,empty_blob())');
* $conn->UpdateBlob('TABLE', 'ablob', $varHoldingBlob, 'ID=12', 'BLOB');
*
* $blobtype supports 'BLOB' and 'CLOB', but you need to change to 'empty_clob()'.
*
* to get length of LOB:
* select DBMS_LOB.GETLENGTH(ablob) from TABLE
*
* If you are using CURSOR_SHARING = force, it appears this will case a segfault
* under oracle 8.1.7.0. Run:
* $db->Execute('ALTER SESSION SET CURSOR_SHARING=EXACT');
* before UpdateBlob() then...
*/
function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
{
//if (strlen($val) < 4000) return $this->Execute("UPDATE $table SET $column=:blob WHERE $where",array('blob'=>$val)) != false;
switch(strtoupper($blobtype)) {
default: ADOConnection::outp("<b>UpdateBlob</b>: Unknown blobtype=$blobtype"); return false;
case 'BLOB': $type = OCI_B_BLOB; break;
case 'CLOB': $type = OCI_B_CLOB; break;
}
if ($this->databaseType == 'oci8po')
$sql = "UPDATE $table set $column=EMPTY_{$blobtype}() WHERE $where RETURNING $column INTO ?";
else
$sql = "UPDATE $table set $column=EMPTY_{$blobtype}() WHERE $where RETURNING $column INTO :blob";
$desc = oci_new_descriptor($this->_connectionID, OCI_D_LOB);
$arr['blob'] = array($desc,-1,$type);
if ($this->session_sharing_force_blob) {
$this->Execute('ALTER SESSION SET CURSOR_SHARING=EXACT');
}
$commit = $this->autoCommit;
if ($commit) {
$this->BeginTrans();
}
$rs = $this->_Execute($sql,$arr);
if ($rez = !empty($rs)) {
$desc->save($val);
}
$desc->free();
if ($commit) {
$this->CommitTrans();
}
if ($this->session_sharing_force_blob) {
$this->Execute('ALTER SESSION SET CURSOR_SHARING=FORCE');
}
if ($rez) {
$rs->Close();
}
return $rez;
}
/**
* Usage: store file pointed to by $val in a blob
*/
function UpdateBlobFile($table,$column,$val,$where,$blobtype='BLOB')
{
switch(strtoupper($blobtype)) {
default: ADOConnection::outp( "<b>UpdateBlob</b>: Unknown blobtype=$blobtype"); return false;
case 'BLOB': $type = OCI_B_BLOB; break;
case 'CLOB': $type = OCI_B_CLOB; break;
}
if ($this->databaseType == 'oci8po')
$sql = "UPDATE $table set $column=EMPTY_{$blobtype}() WHERE $where RETURNING $column INTO ?";
else
$sql = "UPDATE $table set $column=EMPTY_{$blobtype}() WHERE $where RETURNING $column INTO :blob";
$desc = oci_new_descriptor($this->_connectionID, OCI_D_LOB);
$arr['blob'] = array($desc,-1,$type);
$this->BeginTrans();
$rs = ADODB_oci8::Execute($sql,$arr);
if ($rez = !empty($rs)) {
$desc->savefile($val);
}
$desc->free();
$this->CommitTrans();
if ($rez) {
$rs->Close();
}
return $rez;
}
function Execute($sql,$inputarr=false)
{