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adodb-datadict.inc.php
1100 lines (966 loc) · 28.7 KB
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adodb-datadict.inc.php
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<?php
/**
* ADOdb Data Dictionary base class.
*
* 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
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
/**
* Test script for parser
*/
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 {
/** @var ADOConnection */
var $connection;
var $debug = false;
var $dropTable = 'DROP TABLE %s';
var $renameTable = 'RENAME TABLE %s TO %s';
var $dropIndex = 'DROP INDEX %s';
var $addCol = ' ADD';
var $alterCol = ' ALTER COLUMN';
var $dropCol = ' DROP COLUMN';
var $renameColumn = 'ALTER TABLE %s RENAME COLUMN %s TO %s'; // table, old-column, new-column, column-definitions (not used by default)
var $nameRegex = '\w';
var $nameRegexBrackets = 'a-zA-Z0-9_\(\)';
var $schema = false;
var $serverInfo = array();
var $autoIncrement = false;
var $dataProvider;
var $invalidResizeTypes4 = array('CLOB','BLOB','TEXT','DATE','TIME'); // for changeTableSQL
var $blobSize = 100; /// any varchar/char field this size or greater is treated as a blob
/// in other words, we use a text area for editing.
/** @var string Uppercase driver name */
var $upperName;
/*
* 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;
/*
* 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;
/**
* @var string String to use to quote identifiers and names
*/
public $quote;
function getCommentSQL($table,$col)
{
return false;
}
function setCommentSQL($table,$col,$cmt)
{
return false;
}
function metaTables()
{
if (!$this->connection->isConnected()) return array();
return $this->connection->metaTables();
}
function metaColumns($tab, $upper=true, $schema=false)
{
if (!$this->connection->isConnected()) return array();
return $this->connection->metaColumns($this->tableName($tab), $upper, $schema);
}
function metaPrimaryKeys($tab,$owner=false,$intkey=false)
{
if (!$this->connection->isConnected()) return array();
return $this->connection->metaPrimaryKeys($this->tableName($tab), $owner, $intkey);
}
function metaIndexes($table, $primary = false, $owner = false)
{
if (!$this->connection->isConnected()) return array();
return $this->connection->metaIndexes($this->tableName($table), $primary, $owner);
}
function metaType($t,$len=-1,$fieldobj=false)
{
static $typeMap = array(
'VARCHAR' => 'C',
'VARCHAR2' => 'C',
'CHAR' => 'C',
'C' => 'C',
'STRING' => 'C',
'NCHAR' => 'C',
'NVARCHAR' => 'C',
'VARYING' => 'C',
'BPCHAR' => 'C',
'CHARACTER' => 'C',
'INTERVAL' => 'C', # Postgres
'MACADDR' => 'C', # postgres
'VAR_STRING' => 'C', # mysql
##
'LONGCHAR' => 'X',
'TEXT' => 'X',
'NTEXT' => 'X',
'M' => 'X',
'X' => 'X',
'CLOB' => 'X',
'NCLOB' => 'X',
'LVARCHAR' => 'X',
##
'BLOB' => 'B',
'IMAGE' => 'B',
'BINARY' => 'B',
'VARBINARY' => 'B',
'LONGBINARY' => 'B',
'B' => 'B',
##
'YEAR' => 'D', // mysql
'DATE' => 'D',
'D' => 'D',
##
'UNIQUEIDENTIFIER' => 'C', # MS SQL Server
##
'TIME' => 'T',
'TIMESTAMP' => 'T',
'DATETIME' => 'T',
'TIMESTAMPTZ' => 'T',
'SMALLDATETIME' => 'T',
'T' => 'T',
'TIMESTAMP WITHOUT TIME ZONE' => 'T', // postgresql
##
'BOOL' => 'L',
'BOOLEAN' => 'L',
'BIT' => 'L',
'L' => 'L',
##
'COUNTER' => 'R',
'R' => 'R',
'SERIAL' => 'R', // ifx
'INT IDENTITY' => 'R',
##
'INT' => 'I',
'INT2' => 'I',
'INT4' => 'I',
'INT8' => 'I',
'INTEGER' => 'I',
'INTEGER UNSIGNED' => 'I',
'SHORT' => 'I',
'TINYINT' => 'I',
'SMALLINT' => 'I',
'I' => 'I',
##
'LONG' => 'N', // interbase is numeric, oci8 is blob
'BIGINT' => 'N', // this is bigger than PHP 32-bit integers
'DECIMAL' => 'N',
'DEC' => 'N',
'REAL' => 'N',
'DOUBLE' => 'N',
'DOUBLE PRECISION' => 'N',
'SMALLFLOAT' => 'N',
'FLOAT' => 'N',
'NUMBER' => 'N',
'NUM' => 'N',
'NUMERIC' => 'N',
'MONEY' => 'N',
## informix 9.2
'SQLINT' => 'I',
'SQLSERIAL' => 'I',
'SQLSMINT' => 'I',
'SQLSMFLOAT' => 'N',
'SQLFLOAT' => 'N',
'SQLMONEY' => 'N',
'SQLDECIMAL' => 'N',
'SQLDATE' => 'D',
'SQLVCHAR' => 'C',
'SQLCHAR' => 'C',
'SQLDTIME' => 'T',
'SQLINTERVAL' => 'N',
'SQLBYTES' => 'B',
'SQLTEXT' => 'X',
## informix 10
"SQLINT8" => 'I8',
"SQLSERIAL8" => 'I8',
"SQLNCHAR" => 'C',
"SQLNVCHAR" => 'C',
"SQLLVARCHAR" => 'X',
"SQLBOOL" => 'L'
);
if (!$this->connection->isConnected()) {
$t = strtoupper($t);
if (isset($typeMap[$t])) return $typeMap[$t];
return ADODB_DEFAULT_METATYPE;
}
return $this->connection->metaType($t,$len,$fieldobj);
}
function nameQuote($name = NULL,$allowBrackets=false)
{
if (!is_string($name)) {
return false;
}
$name = trim($name);
if ( !is_object($this->connection) ) {
return $name;
}
$quote = $this->connection->nameQuote;
// if name is of the form `name`, quote it
if ( preg_match('/^`(.+)`$/', $name, $matches) ) {
return $quote . $matches[1] . $quote;
}
// if name contains special characters, quote it
$regex = ($allowBrackets) ? $this->nameRegexBrackets : $this->nameRegex;
if ( !preg_match('/^[' . $regex . ']+$/', $name) ) {
return $quote . $name . $quote;
}
return $name;
}
function tableName($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
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 $rez;
}
/**
Returns the actual type given a character code.
C: varchar
X: CLOB (character large object) or largest varchar size if CLOB is not supported
C2: Multibyte varchar
X2: Multibyte CLOB
B: BLOB (binary large object)
D: Date
T: Date-time
L: Integer field suitable for storing booleans (0 or 1)
I: Integer
F: Floating point number
N: Numeric or decimal number
*/
function actualType($meta)
{
$meta = strtoupper($meta);
/*
* Add support for custom meta types. We do this
* first, that allows us to override existing types
*/
if (isset($this->connection->customMetaTypes[$meta]))
return $this->connection->customMetaTypes[$meta]['actual'];
return $meta;
}
function createDatabase($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 $sql;
}
/*
Generates the SQL to create index. Returns an array of sql strings.
*/
function createIndexSQL($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));
}
function dropIndexSQL ($idxname, $tabname = NULL)
{
return array(sprintf($this->dropIndex, $this->nameQuote($idxname), $this->tableName($tabname)));
}
function setSchema($schema)
{
$this->schema = $schema;
}
function addColumnSQL($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 DBMs can't do that on their 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 $tableoptions='' options for the new table see createTableSQL, default ''
* @return array with SQL strings
*/
function alterColumnSQL($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 DBMs 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 $flds='' complete column-definition-string like for addColumnSQL, only used by mysql atm., default=''
* @return array with SQL strings
*/
function renameColumnSQL($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 their 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 $tableoptions='' options for the new table see createTableSQL, default ''
* @return array with SQL strings
*/
function dropColumnSQL($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 $sql;
}
function dropTableSQL($tabname)
{
return array (sprintf($this->dropTable, $this->tableName($tabname)));
}
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.
*/
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 $sql;
}
function _genFields($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
$ty is the type defined originally in the DDL
*/
function _getSize($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 $ftype;
}
// return string must begin with space
function _createSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
{
$suffix = '';
if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
if ($fnotnull) $suffix .= ' NOT NULL';
if ($fconstraint) $suffix .= ' '.$fconstraint;
return $suffix;
}
function _indexSQL($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 $sql;
}
function _dropAutoIncrement($tabname)
{
return false;
}
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 $sql;
}
/**
GENERATE TRIGGERS IF NEEDED
used when table has auto-incrementing field that is emulated using triggers
*/
function _triggers($tabname,$taboptions)
{
return array();
}
/**
Sanitize options, so that array elements with no keys are promoted to keys
*/
function _options($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;
}