File: D:/web/itpartnership.net (cms)/lib/adodb_lite/adodbSQL_drivers/generic/mysql_meta_module.inc
<?php
/**
* ADOdb Lite Meta Module for Mysql
*
* Portions of the Meta Coding came from ADOdb
*/
/*
(c) 2000-2005 John Lim (jlim@natsoft.com.my). All rights reserved.
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. See License.txt.
*/
eval('class mysql_meta_EXTENDER extends mysql_'. $last_module . '_ADOConnection { }');
class mysql_meta_ADOConnection extends mysql_meta_EXTENDER
{
var $metaDatabasesSQL = '';
var $metaTablesSQL = '';
function MetaError($err=false)
{
include_once(ADODB_DIR."/adodb-error.inc.php");
if ($err === false)
$err = $this->ErrorNo();
return adodb_error($this->dataProvider,$this->databaseType,$err);
}
function MetaErrorMsg($errno)
{
include_once(ADODB_DIR."/adodb-error.inc.php");
return adodb_errormsg($errno);
}
/**
* @returns an array with the primary key columns in it.
*/
function MetaPrimaryKeys($table, $owner=false)
{
// owner not used in base class - see oci8
$p = array();
$objs =& $this->MetaColumns($table);
if ($objs) {
foreach($objs as $v) {
if (!empty($v->primary_key))
$p[] = $v->name;
}
}
if (sizeof($p))
return $p;
if (function_exists('ADODB_VIEW_PRIMARYKEYS'))
return ADODB_VIEW_PRIMARYKEYS($this->databaseType, $this->database, $table, $owner);
return false;
}
/**
* @returns assoc array where keys are tables, and values are foreign keys
*/
function MetaForeignKeys($table, $owner=false, $upper=false)
{
return false;
}
// not the fastest implementation - quick and dirty - jlim
// for best performance, use the actual $rs->MetaType().
function MetaType($t,$len=-1,$fieldobj=false)
{
if (empty($this->_metars)) {
$rsclass = $this->rsPrefix.$this->databaseType;
$this->_metars =& new $rsclass(false,$this->fetchMode);
}
return $this->_metars->MetaType($t,$len,$fieldobj);
}
/**
* return the databases that the driver can connect to.
* Some databases will return an empty array.
*
* @return an array of database names.
*/
function MetaDatabases()
{
global $ADODB_FETCH_MODE;
if ($this->metaDatabasesSQL) {
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== false)
$savem = $this->SetFetchMode(false);
$arr = $this->GetCol($this->metaDatabasesSQL);
if (isset($savem))
$this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
return $arr;
}
return false;
}
/**
* @param ttype can either be 'VIEW' or 'TABLE' or false.
* If false, both views and tables are returned.
* "VIEW" returns only views
* "TABLE" returns only tables
* @param showSchema returns the schema/user with the table name, eg. USER.TABLE
* @param mask is the input mask - only supported by oci8 and postgresql
*
* @return array of tables for current database.
*/
function &MetaTables($ttype=false,$showSchema=false,$mask=false)
{
global $ADODB_FETCH_MODE;
$false = false;
if ($mask) {
return $false;
}
if ($this->metaTablesSQL) {
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== false)
$savem = $this->SetFetchMode(false);
$rs = $this->Execute($this->metaTablesSQL);
if (isset($savem))
$this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
if ($rs === false)
return $false;
$arr =& $rs->GetArray();
$arr2 = array();
if ($hast = ($ttype && isset($arr[0][1]))) {
$showt = strncmp($ttype,'T',1);
}
for ($i=0; $i < sizeof($arr); $i++) {
if ($hast) {
if ($showt == 0) {
if (strncmp($arr[$i][1],'T',1) == 0)
$arr2[] = trim($arr[$i][0]);
} else {
if (strncmp($arr[$i][1],'V',1) == 0)
$arr2[] = trim($arr[$i][0]);
}
} else
$arr2[] = trim($arr[$i][0]);
}
$rs->Close();
return $arr2;
}
return $false;
}
function _findschema(&$table,&$schema)
{
if (!$schema && ($at = strpos($table,'.')) !== false) {
$schema = substr($table,0,$at);
$table = substr($table,$at+1);
}
}
/**
* List columns in a database as an array of ADOFieldObjects.
* See top of file for definition of object.
*
* @param $table table name to query
* @param $normalize makes table name case-insensitive (required by some databases)
* @schema is optional database schema to use - not supported by all databases.
*
* @return array of ADOFieldObjects for current table.
*/
function &MetaColumns($table,$normalize=true)
{
global $ADODB_FETCH_MODE;
$false = false;
if (!empty($this->metaColumnsSQL)) {
$schema = false;
$this->_findschema($table,$schema);
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== false)
$savem = $this->SetFetchMode(false);
$rs = $this->Execute(sprintf($this->metaColumnsSQL,($normalize)?strtoupper($table):$table));
if (isset($savem))
$this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
if ($rs === false || $rs->EOF)
return $false;
$retarr = array();
while (!$rs->EOF) { //print_r($rs->fields);
$fld = new ADOFieldObject();
$fld->name = $rs->fields[0];
$fld->type = $rs->fields[1];
if (isset($rs->fields[3]) && $rs->fields[3]) {
if ($rs->fields[3]>0)
$fld->max_length = $rs->fields[3];
$fld->scale = $rs->fields[4];
if ($fld->scale>0)
$fld->max_length += 1;
} else
$fld->max_length = $rs->fields[2];
if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM)
$retarr[] = $fld;
else $retarr[strtoupper($fld->name)] = $fld;
$rs->MoveNext();
}
$rs->Close();
return $retarr;
}
return $false;
}
/**
* List indexes on a table as an array.
* @param table table name to query
* @param primary true to only show primary keys. Not actually used for most databases
*
* @return array of indexes on current table. Each element represents an index, and is itself an associative array.
Array (
[name_of_index] => Array
(
[unique] => true or false
[columns] => Array
(
[0] => firstname
[1] => lastname
)
)
*/
function &MetaIndexes($table, $primary = false, $owner = false)
{
$false = false;
return $false;
}
/**
* List columns names in a table as an array.
* @param table table name to query
*
* @return array of column names for current table.
*/
function &MetaColumnNames($table, $numIndexes=false)
{
$objarr =& $this->MetaColumns($table);
if (!is_array($objarr)) {
$false = false;
return $false;
}
$arr = array();
if ($numIndexes) {
$i = 0;
foreach($objarr as $v) $arr[$i++] = $v->name;
} else
foreach($objarr as $v) $arr[strtoupper($v->name)] = $v->name;
return $arr;
}
}
eval('class mysql_meta_resultset_EXTENDER extends mysql_'. $last_module . '_ResultSet { }');
class mysql_meta_ResultSet extends mysql_meta_resultset_EXTENDER
{
/**
* Get the metatype of the column. This is used for formatting. This is because
* many databases use different names for the same type, so we transform the original
* type to our standardised version which uses 1 character codes:
*
* @param t is the type passed in. Normally is ADOFieldObject->type.
* @param len is the maximum length of that field. This is because we treat character
* fields bigger than a certain size as a 'B' (blob).
* @param fieldobj is the field object returned by the database driver. Can hold
* additional info (eg. primary_key for mysql).
*
* @return the general type of the data:
* C for character < 250 chars
* X for teXt (>= 250 chars)
* B for Binary
* N for numeric or floating point
* D for date
* T for timestamp
* L for logical/Boolean
* I for integer
* R for autoincrement counter/integer
*
*
*/
function MetaType($t,$len=-1,$fieldobj=false)
{
if (is_object($t)) {
$fieldobj = $t;
$t = $fieldobj->type;
$len = $fieldobj->max_length;
}
// changed in 2.32 to hashing instead of switch stmt for speed...
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
##
'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',
##
'TIME' => 'T',
'TIMESTAMP' => 'T',
'DATETIME' => 'T',
'TIMESTAMPTZ' => 'T',
'T' => 'T',
##
'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'
);
$tmap = false;
$t = strtoupper($t);
$tmap = (isset($typeMap[$t])) ? $typeMap[$t] : 'N';
switch ($tmap) {
case 'C':
// is the char field is too long, return as text field...
if ($this->blobSize >= 0) {
if ($len > $this->blobSize)
return 'X';
} else if ($len > 250) {
return 'X';
}
return 'C';
case 'I':
if (!empty($fieldobj->primary_key))
return 'R';
return 'I';
case false:
return 'N';
case 'B':
if (isset($fieldobj->binary))
return ($fieldobj->binary) ? 'B' : 'X';
return 'B';
case 'D':
if (!empty($this->datetime))
return 'T';
return 'D';
default:
if ($t == 'LONG' && $this->dataProvider == 'oci8')
return 'B';
return $tmap;
}
}
}
?>