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adodb-datadict.inc.php
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<?php
/**
@version v5.22.0-dev Unreleased
@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.
DOCUMENTATION:
See adodb/tests/test-datadict.php for docs and examples.
*/
/*
Test script for parser
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
function Lens_ParseTest()
{
$str = "`zcol ACOL` NUMBER(32,2) DEFAULT 'The \"cow\" (and Jim''s dog) jumps over the moon' PRIMARY, INTI INT AUTO DEFAULT 0, zcol2\"afs ds";
print "<p>$str</p>";
$a= Lens_ParseArgs($str);
print "<pre>";
print_r($a);
print "</pre>";
}
if (!function_exists('ctype_alnum')) {
function ctype_alnum($text) {
return preg_match('/^[a-z0-9]*$/i', $text);
}
}
//Lens_ParseTest();
/**
Parse arguments, treat "text" (text) and 'text' as quotation marks.
To escape, use "" or '' or ))
Will read in "abc def" sans quotes, as: abc def
Same with 'abc def'.
However if `abc def`, then will read in as `abc def`
@param endstmtchar Character that indicates end of statement
@param tokenchars Include the following characters in tokens apart from A-Z and 0-9
@returns 2 dimensional array containing parsed tokens.
*/
function Lens_ParseArgs($args,$endstmtchar=',',$tokenchars='_.-')
{
$pos = 0;
$intoken = false;
$stmtno = 0;
$endquote = false;
$tokens = array();
$tokens[$stmtno] = array();
$max = strlen($args);
$quoted = false;
$tokarr = array();
while ($pos < $max) {
$ch = substr($args,$pos,1);
switch($ch) {
case ' ':
case "\t":
case "\n":
case "\r":
if (!$quoted) {
if ($intoken) {
$intoken = false;
$tokens[$stmtno][] = implode('',$tokarr);
}
break;
}
$tokarr[] = $ch;
break;
case '`':
if ($intoken) $tokarr[] = $ch;
case '(':
case ')':
case '"':
case "'":
if ($intoken) {
if (empty($endquote)) {
$tokens[$stmtno][] = implode('',$tokarr);
if ($ch == '(') $endquote = ')';
else $endquote = $ch;
$quoted = true;
$intoken = true;
$tokarr = array();
} else if ($endquote == $ch) {
$ch2 = substr($args,$pos+1,1);
if ($ch2 == $endquote) {
$pos += 1;
$tokarr[] = $ch2;
} else {
$quoted = false;
$intoken = false;
$tokens[$stmtno][] = implode('',$tokarr);
$endquote = '';
}
} else
$tokarr[] = $ch;
}else {
if ($ch == '(') $endquote = ')';
else $endquote = $ch;
$quoted = true;
$intoken = true;
$tokarr = array();
if ($ch == '`') $tokarr[] = '`';
}
break;
default:
if (!$intoken) {
if ($ch == $endstmtchar) {
$stmtno += 1;
$tokens[$stmtno] = array();
break;
}
$intoken = true;
$quoted = false;
$endquote = false;
$tokarr = array();
}
if ($quoted) $tokarr[] = $ch;
else if (ctype_alnum($ch) || strpos($tokenchars,$ch) !== false) $tokarr[] = $ch;
else {
if ($ch == $endstmtchar) {
$tokens[$stmtno][] = implode('',$tokarr);
$stmtno += 1;
$tokens[$stmtno] = array();
$intoken = false;
$tokarr = array();
break;
}
$tokens[$stmtno][] = implode('',$tokarr);
$tokens[$stmtno][] = $ch;
$intoken = false;
}
}
$pos += 1;
}
if ($intoken) $tokens[$stmtno][] = implode('',$tokarr);
return $tokens;
}
class ADODB_DataDict {
public $connection = null;
public $debug = false;
public $dropTable = 'DROP TABLE %s';
public $renameTable = 'RENAME TABLE %s TO %s';
public $dropIndex = 'DROP INDEX %s';
public $addCol = ' ADD';
public $alterCol = ' ALTER COLUMN';
public $dropCol = ' DROP COLUMN';
public $renameColumn = 'ALTER TABLE %s RENAME COLUMN %s TO %s'; // table, old-column, new-column, column-definitions (not used by default)
public $nameRegex = '\w';
public $nameRegexBrackets = 'a-zA-Z0-9_\(\)';
public $schema = false;
public $serverInfo = array();//DEPRECATED; Use GetServerInfo() instead;
public $autoIncrement = false;
public $dataProvider = null; //Copied from the ADOConnection instance
public $databaseType = null; //Copied from the ADOConnection instance
public $invalidResizeTypes4 = array('CLOB','BLOB','TEXT','DATE','TIME'); // for changetablesql
public $nameQuote = '"'; /// string to use to quote identifiers
public $sql_concatenateOperator = '+'; /// default concat operator -- change to || for Oracle/Interbase
public $sql_sysDate = false; /// name of function that returns the current date
public $sql_sysTimeStamp = false; /// name of function that returns the current timestamp
//PRIVATES
protected $_serverInfoArray = null;
/*
* Indicates whether a BLOB/CLOB field will allow a NOT NULL setting
* The type is whatever is matched to an X or X2 or B type. We must
* explicitly set the value in the driver to switch the behaviour on
*/
public $blobAllowsNotNull = false;
/*
* Indicates whether a BLOB/CLOB field will allow a DEFAULT set
* The type is whatever is matched to an X or X2 or B type. We must
* explicitly set the value in the driver to switch the behaviour on
*/
public $blobAllowsDefaultValue = false;
public function GetCommentSQL($table,$col)
{
return false;
}
public function SetCommentSQL($table,$col,$cmt)
{
return false;
}
public function MetaTables()
{
if (!$this->connection->IsConnected()) return array();
return $this->connection->MetaTables();
}
public function MetaColumns($tab, $upper=null)
{
if (!$this->connection->IsConnected()) return array();
return $this->connection->MetaColumns($tab, $upper);
}
public function MetaPrimaryKeys($tab,$owner=false,$intkey=false)
{
if (!$this->connection->IsConnected()) return array();
return $this->connection->MetaPrimaryKeys($tab, $owner, $intkey);
}
public function MetaIndexes($table, $primary = false, $owner = false)
{
if (!$this->connection->IsConnected()) return array();
return $this->connection->MetaIndexes($table, $primary, $owner);
}
public final function MetaType($t,$len=-1,$fieldobj=false)
{return $this->connection->MetaType($t,$len,$fieldobj);}
public function NameQuote($name = NULL,$allowBrackets=false)
{
if (!is_string($name)) {
return FALSE;
}
$name = trim($name);
if ( !is_object($this->connection) ) {
return $name;
}
$quote = $this->nameQuote;
// if name is of the form `name`, quote it
if ( preg_match('/^`(.+)`$/', $name, $matches) ) {
return $this->ForceNameQuote($matches[1]);
}
// if name contains special characters, quote it
$regex = ($allowBrackets) ? $this->nameRegexBrackets : $this->nameRegex;
if ( !preg_match('/^[' . $regex . ']+$/', $name) ) {
return $quote . $name . $quote;
}
return $name;
}
public function ForceNameQuote($pName = NULL)
{
if(!is_string($pName))
{return false;}
$vName = trim($pName);
$vMatches = null;
if($this->nameQuote === '[')
{return '['.$vName.']';}
return $this->nameQuote.$vName.$this->nameQuote;
}
public function TableName($name)
{
if ( $this->schema ) {
return $this->NameQuote($this->schema) .'.'. $this->NameQuote($name);
}
return $this->NameQuote($name);
}
// Executes the sql array returned by GetTableSQL and GetIndexSQL
public function ExecuteSQLArray($sql, $continueOnError = true)
{
$rez = 2;
$conn = $this->connection;
$saved = $conn->debug;
foreach($sql as $line) {
if ($this->debug) $conn->debug = true;
$ok = $conn->Execute($line);
$conn->debug = $saved;
if (!$ok) {
if ($this->debug) ADOConnection::outp($conn->ErrorMsg());
if (!$continueOnError) return 0;
$rez = 1;
}
}
return $rez;
}
/**
Returns the actual type given a character code.
C: varchar
X: CLOB (character large object) or largest varchar size if CLOB is not supported
C2: Multibyte varchar
X2: Multibyte CLOB
B: BLOB (binary large object)
D: Date
T: Date-time
L: Integer field suitable for storing booleans (0 or 1)
I: Integer
F: Floating point number
N: Numeric or decimal number
NOTE (APRIL-2021): It is desirable for the following condition to hold:
ADODB_DataDict::ActualType(x) != ADODB_DataDict::ActualType(y) FOR ALL x != y
Refer to adoSchema::ExtractSchema()
*/
public function ActualType($meta)
{
return $meta;
}
public function CreateDatabase($dbname,$options=false)
{
$options = $this->_Options($options);
$sql = array();
$s = 'CREATE DATABASE ' . $this->NameQuote($dbname);
if (isset($options[$this->upperName]))
$s .= ' '.$options[$this->upperName];
$sql[] = $s;
return $sql;
}
/*
Generates the SQL to create index. Returns an array of sql strings.
*/
public function CreateIndexSQL($idxname, $tabname, $flds, $idxoptions = false)
{
if (!is_array($flds)) {
$flds = explode(',',$flds);
}
foreach($flds as $key => $fld) {
# some indexes can use partial fields, eg. index first 32 chars of "name" with NAME(32)
$flds[$key] = $this->NameQuote($fld,$allowBrackets=true);
}
return $this->_IndexSQL($this->NameQuote($idxname), $this->TableName($tabname), $flds, $this->_Options($idxoptions));
}
public function DropIndexSQL ($idxname, $tabname = NULL)
{
return array(sprintf($this->dropIndex, $this->NameQuote($idxname), $this->TableName($tabname)));
}
public function SetSchema($schema)
{
$this->schema = $schema;
}
public function AddColumnSQL($tabname, $flds)
{
$tabname = $this->TableName ($tabname);
$sql = array();
list($lines,$pkey,$idxs) = $this->_GenFields($flds);
// genfields can return FALSE at times
if ($lines == null) $lines = array();
$alter = 'ALTER TABLE ' . $tabname . $this->addCol . ' ';
foreach($lines as $v) {
$sql[] = $alter . $v;
}
if (is_array($idxs)) {
foreach($idxs as $idx => $idxdef) {
$sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']);
$sql = array_merge($sql, $sql_idxs);
}
}
return $sql;
}
/**
* Change the definition of one column
*
* As some DBM's can't do that on there own, you need to supply the complete definition of the new table,
* to allow, recreating the table and copying the content over to the new table
* @param string $tabname table-name
* @param string $flds column-name and type for the changed column
* @param string $tableflds='' complete definition of the new table, eg. for postgres, default ''
* @param array/string $tableoptions='' options for the new table see CreateTableSQL, default ''
* @return array with SQL strings
*/
public function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
{
$tabname = $this->TableName ($tabname);
$sql = array();
list($lines,$pkey,$idxs) = $this->_GenFields($flds);
// genfields can return FALSE at times
if ($lines == null) $lines = array();
$alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' ';
foreach($lines as $v) {
$sql[] = $alter . $v;
}
if (is_array($idxs)) {
foreach($idxs as $idx => $idxdef) {
$sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']);
$sql = array_merge($sql, $sql_idxs);
}
}
return $sql;
}
/**
* Rename one column
*
* Some DBM's can only do this together with changeing the type of the column (even if that stays the same, eg. mysql)
* @param string $tabname table-name
* @param string $oldcolumn column-name to be renamed
* @param string $newcolumn new column-name
* @param string $flds='' complete column-defintion-string like for AddColumnSQL, only used by mysql atm., default=''
* @return array with SQL strings
*/
public function RenameColumnSQL($tabname,$oldcolumn,$newcolumn,$flds='')
{
$tabname = $this->TableName ($tabname);
if ($flds) {
list($lines,$pkey,$idxs) = $this->_GenFields($flds);
// genfields can return FALSE at times
if ($lines == null) $lines = array();
$first = current($lines);
list(,$column_def) = preg_split("/[\t ]+/",$first,2);
}
return array(sprintf($this->renameColumn,$tabname,$this->NameQuote($oldcolumn),$this->NameQuote($newcolumn),$column_def));
}
/**
* Drop one column
*
* Some DBM's can't do that on there own, you need to supply the complete definition of the new table,
* to allow, recreating the table and copying the content over to the new table
* @param string $tabname table-name
* @param string $flds column-name and type for the changed column
* @param string $tableflds='' complete definition of the new table, eg. for postgres, default ''
* @param array/string $tableoptions='' options for the new table see CreateTableSQL, default ''
* @return array with SQL strings
*/
public function DropColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
{
$tabname = $this->TableName ($tabname);
if (!is_array($flds)) $flds = explode(',',$flds);
$sql = array();
$alter = 'ALTER TABLE ' . $tabname . $this->dropCol . ' ';
foreach($flds as $v) {
$sql[] = $alter . $this->NameQuote($v);
}
return $sql;
}
public function DropTableSQL($tabname)
{
return array (sprintf($this->dropTable, $this->TableName($tabname)));
}
public function RenameTableSQL($tabname,$newname)
{
return array (sprintf($this->renameTable, $this->TableName($tabname),$this->TableName($newname)));
}
/**
Generate the SQL to create table. Returns an array of sql strings.
*/
public function CreateTableSQL($tabname, $flds, $tableoptions=array())
{
list($lines,$pkey,$idxs) = $this->_GenFields($flds, true);
// genfields can return FALSE at times
if ($lines == null) $lines = array();
$taboptions = $this->_Options($tableoptions);
$tabname = $this->TableName ($tabname);
$sql = $this->_TableSQL($tabname,$lines,$pkey,$taboptions);
// ggiunta - 2006/10/12 - KLUDGE:
// if we are on autoincrement, and table options includes REPLACE, the
// autoincrement sequence has already been dropped on table creation sql, so
// we avoid passing REPLACE to trigger creation code. This prevents
// creating sql that double-drops the sequence
if ($this->autoIncrement && isset($taboptions['REPLACE']))
unset($taboptions['REPLACE']);
$tsql = $this->_Triggers($tabname,$taboptions);
foreach($tsql as $s) $sql[] = $s;
if (is_array($idxs)) {
foreach($idxs as $idx => $idxdef) {
$sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']);
$sql = array_merge($sql, $sql_idxs);
}
}
return $sql;
}
protected function _GenFields($flds,$widespacing=false)
{
if (is_string($flds)) {
$padding = ' ';
$txt = $flds.$padding;
$flds = array();
$flds0 = Lens_ParseArgs($txt,',');
$hasparam = false;
foreach($flds0 as $f0) {
$f1 = array();
foreach($f0 as $token) {
switch (strtoupper($token)) {
case 'INDEX':
$f1['INDEX'] = '';
// fall through intentionally
case 'CONSTRAINT':
case 'DEFAULT':
$hasparam = $token;
break;
default:
if ($hasparam) $f1[$hasparam] = $token;
else $f1[] = $token;
$hasparam = false;
break;
}
}
// 'index' token without a name means single column index: name it after column
if (array_key_exists('INDEX', $f1) && $f1['INDEX'] == '') {
$f1['INDEX'] = isset($f0['NAME']) ? $f0['NAME'] : $f0[0];
// check if column name used to create an index name was quoted
if (($f1['INDEX'][0] == '"' || $f1['INDEX'][0] == "'" || $f1['INDEX'][0] == "`") &&
($f1['INDEX'][0] == substr($f1['INDEX'], -1))) {
$f1['INDEX'] = $f1['INDEX'][0].'idx_'.substr($f1['INDEX'], 1, -1).$f1['INDEX'][0];
}
else
$f1['INDEX'] = 'idx_'.$f1['INDEX'];
}
// reset it, so we don't get next field 1st token as INDEX...
$hasparam = false;
$flds[] = $f1;
}
}
$this->autoIncrement = false;
$lines = array();
$pkey = array();
$idxs = array();
foreach($flds as $fld) {
if (is_array($fld))
$fld = array_change_key_case($fld,CASE_UPPER);
$fname = false;
$fdefault = false;
$fautoinc = false;
$ftype = false;
$fsize = false;
$fprec = false;
$fprimary = false;
$fnoquote = false;
$fdefts = false;
$fdefdate = false;
$fconstraint = false;
$fnotnull = false;
$funsigned = false;
$findex = '';
$funiqueindex = false;
$fOptions = array();
//-----------------
// Parse attributes
foreach($fld as $attr => $v) {
if ($attr == 2 && is_numeric($v))
$attr = 'SIZE';
elseif ($attr == 2 && strtoupper($ftype) == 'ENUM')
$attr = 'ENUM';
else if (is_numeric($attr) && $attr > 1 && !is_numeric($v))
$attr = strtoupper($v);
switch($attr) {
case '0':
case 'NAME': $fname = $v; break;
case '1':
case 'TYPE':
$ty = $v;
$ftype = $this->ActualType(strtoupper($v));
break;
case 'SIZE':
$dotat = strpos($v,'.');
if ($dotat === false)
$dotat = strpos($v,',');
if ($dotat === false)
$fsize = $v;
else {
$fsize = substr($v,0,$dotat);
$fprec = substr($v,$dotat+1);
}
break;
case 'UNSIGNED': $funsigned = true; break;
case 'AUTOINCREMENT':
case 'AUTO': $fautoinc = true; $fnotnull = true; break;
case 'KEY':
// a primary key col can be non unique in itself (if key spans many cols...)
case 'PRIMARY': $fprimary = $v; $fnotnull = true; /*$funiqueindex = true;*/ break;
case 'DEF':
case 'DEFAULT': $fdefault = $v; break;
case 'NOTNULL': $fnotnull = $v; break;
case 'NOQUOTE': $fnoquote = $v; break;
case 'DEFDATE': $fdefdate = $v; break;
case 'DEFTIMESTAMP': $fdefts = $v; break;
case 'CONSTRAINT': $fconstraint = $v; break;
// let INDEX keyword create a 'very standard' index on column
case 'INDEX': $findex = $v; break;
case 'UNIQUE': $funiqueindex = true; break;
case 'ENUM':
$fOptions['ENUM'] = $v; break;
} //switch
} // foreach $fld
//--------------------
// VALIDATE FIELD INFO
if (!strlen($fname)) {
if ($this->debug) ADOConnection::outp("Undefined NAME");
return false;
}
$fid = strtoupper(preg_replace('/^`(.+)`$/', '$1', $fname));
$fname = $this->NameQuote($fname);
if (!strlen($ftype)) {
if ($this->debug) ADOConnection::outp("Undefined TYPE for field '$fname'");
return false;
} else {
$ftype = strtoupper($ftype);
}
$ftype = $this->_GetSize($ftype, $ty, $fsize, $fprec, $fOptions);
if (($ty == 'X' || $ty == 'X2' || $ty == 'XL' || $ty == 'B') && !$this->blobAllowsNotNull)
/*
* some blob types do not accept nulls, so we override the
* previously defined value
*/
$fnotnull = false;
if ($fprimary)
$pkey[] = $fname;
if (($ty == 'X' || $ty == 'X2' || $ty == 'XL' || $ty == 'B') && !$this->blobAllowsDefaultValue)
/*
* some databases do not allow blobs to have defaults, so we
* override the previously defined value
*/
$fdefault = false;
// build list of indexes
if ($findex != '') {
if (array_key_exists($findex, $idxs)) {
$idxs[$findex]['cols'][] = ($fname);
if (in_array('UNIQUE', $idxs[$findex]['opts']) != $funiqueindex) {
if ($this->debug) ADOConnection::outp("Index $findex defined once UNIQUE and once not");
}
if ($funiqueindex && !in_array('UNIQUE', $idxs[$findex]['opts']))
$idxs[$findex]['opts'][] = 'UNIQUE';
}
else
{
$idxs[$findex] = array();
$idxs[$findex]['cols'] = array($fname);
if ($funiqueindex)
$idxs[$findex]['opts'] = array('UNIQUE');
else
$idxs[$findex]['opts'] = array();
}
}
//--------------------
// CONSTRUCT FIELD SQL
if ($fdefts) {
if (substr($this->connection->databaseType,0,5) == 'mysql') {
$ftype = 'TIMESTAMP';
} else {
$fdefault = $this->connection->sysTimeStamp;
}
} else if ($fdefdate) {
if (substr($this->connection->databaseType,0,5) == 'mysql') {
$ftype = 'TIMESTAMP';
} else {
$fdefault = $this->connection->sysDate;
}
} else if ($fdefault !== false && !$fnoquote) {
if ($ty == 'C' or $ty == 'X' or
( substr($fdefault,0,1) != "'" && !is_numeric($fdefault))) {
if (($ty == 'D' || $ty == 'T') && strtolower($fdefault) != 'null') {
// convert default date into database-aware code
if ($ty == 'T')
{
$fdefault = $this->connection->DBTimeStamp($fdefault);
}
else
{
$fdefault = $this->connection->DBDate($fdefault);
}
}
else
if (strlen($fdefault) != 1 && substr($fdefault,0,1) == ' ' && substr($fdefault,strlen($fdefault)-1) == ' ')
$fdefault = trim($fdefault);
else if (strtolower($fdefault) != 'null')
$fdefault = $this->connection->qstr($fdefault);
}
}
$suffix = $this->_CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned);
// add index creation
if ($widespacing) $fname = str_pad($fname,24);
// check for field names appearing twice
if (array_key_exists($fid, $lines)) {
ADOConnection::outp("Field '$fname' defined twice");
}
$lines[$fid] = $fname.' '.$ftype.$suffix;
if ($fautoinc) $this->autoIncrement = true;
} // foreach $flds
return array($lines,$pkey,$idxs);
}
/**
GENERATE THE SIZE PART OF THE DATATYPE
$ftype is the actual type
$ty is the type defined originally in the DDL
*/
protected function _GetSize($ftype, $ty, $fsize, $fprec, $options=false)
{
if (strlen($fsize) && $ty != 'X' && $ty != 'B' && strpos($ftype,'(') === false) {
$ftype .= "(".$fsize;
if (strlen($fprec)) $ftype .= ",".$fprec;
$ftype .= ')';
}
/*
* Handle additional options
*/
if (is_array($options))
{
foreach($options as $type=>$value)
{
switch ($type)
{
case 'ENUM':
$ftype .= '(' . $value . ')';
break;
default:
}
}
}
return $ftype;
}
// return string must begin with space
protected function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
{
$suffix = '';
if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
if ($fnotnull) $suffix .= ' NOT NULL';
if ($fconstraint) $suffix .= ' '.$fconstraint;
return $suffix;
}
protected function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
{
$sql = array();
if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
$sql[] = sprintf ($this->dropIndex, $idxname);
if ( isset($idxoptions['DROP']) )
return $sql;
}
if ( empty ($flds) ) {
return $sql;
}
$unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : '';
$s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' ';
if ( isset($idxoptions[$this->upperName]) )
$s .= $idxoptions[$this->upperName];
if ( is_array($flds) )
$flds = implode(', ',$flds);
$s .= '(' . $flds . ')';
$sql[] = $s;
return $sql;
}
protected function _DropAutoIncrement($tabname)
{
return false;
}
protected function _TableSQL($tabname,$lines,$pkey,$tableoptions)
{
$sql = array();
if (isset($tableoptions['REPLACE']) || isset ($tableoptions['DROP'])) {
$sql[] = sprintf($this->dropTable,$tabname);
if ($this->autoIncrement) {
$sInc = $this->_DropAutoIncrement($tabname);
if ($sInc) $sql[] = $sInc;
}
if ( isset ($tableoptions['DROP']) ) {
return $sql;
}
}
$s = "CREATE TABLE $tabname (\n";
$s .= implode(",\n", $lines);
if (sizeof($pkey)>0) {
$s .= ",\n PRIMARY KEY (";
$s .= implode(", ",$pkey).")";
}
if (isset($tableoptions['CONSTRAINTS']))
$s .= "\n".$tableoptions['CONSTRAINTS'];
if (isset($tableoptions[$this->upperName.'_CONSTRAINTS']))
$s .= "\n".$tableoptions[$this->upperName.'_CONSTRAINTS'];
$s .= "\n)";
if (isset($tableoptions[$this->upperName])) $s .= $tableoptions[$this->upperName];
$sql[] = $s;
return $sql;
}
/**
GENERATE TRIGGERS IF NEEDED
used when table has auto-incrementing field that is emulated using triggers
*/
protected function _Triggers($tabname,$taboptions)
{
return array();
}
/**
Sanitize options, so that array elements with no keys are promoted to keys
*/
protected function _Options($opts)
{
if (!is_array($opts)) return array();
$newopts = array();
foreach($opts as $k => $v) {
if (is_numeric($k)) $newopts[strtoupper($v)] = $v;
else $newopts[strtoupper($k)] = $v;
}
return $newopts;
}
protected function _getSizePrec($size)
{
$fsize = false;
$fprec = false;
$dotat = strpos($size,'.');
if ($dotat === false) $dotat = strpos($size,',');
if ($dotat === false) $fsize = $size;
else {
$fsize = substr($size,0,$dotat);
$fprec = substr($size,$dotat+1);
}
return array($fsize, $fprec);
}
/**
"Florian Buzin [ easywe ]" <florian.buzin#easywe.de>
This function changes/adds new fields to your table. You don't
have to know if the col is new or not. It will check on its own.
*/
public function ChangeTableSQL($tablename, $flds, $tableoptions = false, $dropOldFlds=false)
{
$savem = $this->connection->SetFetchMode2(ADODB_FETCH_ASSOC);
// check table exists
$save_handler = $this->connection->raiseErrorFn;
$this->connection->raiseErrorFn = '';
$cols = $this->MetaColumns($tablename);
$this->connection->raiseErrorFn = $save_handler;
$this->connection->SetFetchMode2($savem);
if ( empty($cols)) {
return $this->CreateTableSQL($tablename, $flds, $tableoptions);
}
if (is_array($flds)) {
// Cycle through the update fields, comparing
// existing fields to fields to update.
// if the Metatype and size is exactly the
// same, ignore - by Mark Newham
$holdflds = array();
foreach($flds as $k=>$v) {
if ( isset($cols[$k]) && is_object($cols[$k]) ) {
// If already not allowing nulls, then don't change
$obj = $cols[$k];
if (isset($obj->not_null) && $obj->not_null)
$v = str_replace('NOT NULL','',$v);
if (isset($obj->auto_increment) && $obj->auto_increment && empty($v['AUTOINCREMENT']))
$v = str_replace('AUTOINCREMENT','',$v);
$c = $cols[$k];
$ml = $c->max_length;
$mt = $this->MetaType($c->type,$ml);
if (isset($c->scale)) $sc = $c->scale;
else $sc = 99; // always force change if scale not known.
if ($sc == -1) $sc = false;
list($fsize, $fprec) = $this->_getSizePrec($v['SIZE']);
if ($ml == -1) $ml = '';
if ($mt == 'X') $ml = $v['SIZE'];
if (($mt != $v['TYPE']) || ($ml != $fsize || $sc != $fprec) || (isset($v['AUTOINCREMENT']) && $v['AUTOINCREMENT'] != $obj->auto_increment)) {
$holdflds[$k] = $v;
}
} else {
$holdflds[$k] = $v;
}
}
$flds = $holdflds;
}
// already exists, alter table instead
list($lines,$pkey,$idxs) = $this->_GenFields($flds);
// genfields can return FALSE at times
if ($lines == null) $lines = array();
$alter = 'ALTER TABLE ' . $this->TableName($tablename);
$sql = array();
foreach ( $lines as $id => $v ) {
if ( isset($cols[$id]) && is_object($cols[$id]) ) {
$flds = Lens_ParseArgs($v,',');
// We are trying to change the size of the field, if not allowed, simply ignore the request.
// $flds[1] holds the type, $flds[2] holds the size -postnuke addition
if ($flds && in_array(strtoupper(substr($flds[0][1],0,4)),$this->invalidResizeTypes4)
&& (isset($flds[0][2]) && is_numeric($flds[0][2]))) {
if ($this->debug) ADOConnection::outp(sprintf("<h3>%s cannot be changed to %s currently</h3>", $flds[0][0], $flds[0][1]));
#echo "<h3>$this->alterCol cannot be changed to $flds currently</h3>";
continue;
}
$sql[] = $alter . $this->alterCol . ' ' . $v;
} else {
$sql[] = $alter . $this->addCol . ' ' . $v;
}
}
if ($dropOldFlds) {
foreach ( $cols as $id => $v )
if ( !isset($lines[$id]) )
$sql[] = $alter . $this->dropCol . ' ' . $v->name;
}
return $sql;
}
/**
* ACCESS: FINAL PROTECTED