added own MetaType, MetaColumns and MetaColumnNames functions for MaxDB to have better control over the column-types

This commit is contained in:
Ralf Becker 2004-08-15 18:12:41 +00:00
parent 647222728c
commit ee3f5cafff
2 changed files with 78 additions and 2 deletions

View File

@ -49,6 +49,36 @@ class ADODB2_sapdb extends ADODB_DataDict {
}
}
function MetaType($t,$len=-1,$fieldobj=false)
{
if (is_object($t)) {
$fieldobj = $t;
$t = $fieldobj->type;
$len = $fieldobj->max_length;
}
static $maxdb_type2adodb = array(
'VARCHAR' => 'C',
'CHARACTER' => 'C',
'LONG' => 'X', // no way to differ between 'X' and 'B' :-(
'DATE' => 'D',
'TIMESTAMP' => 'T',
'BOOLEAN' => 'L',
'INTEGER' => 'I4',
'SMALLINT' => 'I2',
'FLOAT' => 'F',
'FIXED' => 'N',
);
$type = isset($maxdb_type2adodb[$t]) ? $maxdb_type2adodb[$t] : 'C';
// convert integer-types simulated with fixed back to integer
if ($t == 'FIXED' && !$fieldobj->scale && ($len == 20 || $len == 3)) {
$type = $len == 20 ? 'I8' : 'I1';
}
if ($fieldobj->auto_increment) $type = 'R';
return $type;
}
// return string must begin with space
function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
{

View File

@ -60,15 +60,16 @@ class ADODB_SAPDB extends ADODB_odbc {
" WHERE TABLENAME=$table".
" ORDER BY INDEXNAME,COLUMNNO";
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== FALSE) {
$savem = $this->SetFetchMode(FALSE);
$savem = $this->SetFetchMode(FALSE);
}
$rs = $this->Execute($sql);
if (isset($savem)) {
$this->SetFetchMode($savem);
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
@ -90,6 +91,51 @@ class ADODB_SAPDB extends ADODB_odbc {
return $indexes;
}
function &MetaColumns ($table)
{
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== FALSE) {
$savem = $this->SetFetchMode(FALSE);
}
$table = $this->Quote(strtoupper($table));
$retarr = array();
foreach($this->GetAll("SELECT COLUMNNAME,DATATYPE,LEN,DEC,NULLABLE,MODE,\"DEFAULT\",CASE WHEN \"DEFAULT\" IS NULL THEN 0 ELSE 1 END AS HAS_DEFAULT FROM COLUMNS WHERE tablename=$table ORDER BY pos") as $column)
{
$fld = new ADOFieldObject();
$fld->name = $column[0];
$fld->type = $column[1];
$fld->max_length = $fld->type == 'LONG' ? 2147483647 : $column[2];
$fld->scale = $column[3];
$fld->not_null = $column[4] == 'NO';
$fld->primary_key = $column[5] == 'KEY';
if ($fld->has_default = $column[7]) {
if ($fld->primary_key && $column[6] == 'DEFAULT SERIAL (1)') {
$fld->auto_increment = true;
$fld->has_default = false;
} else {
$fld->default_value = $column[6];
}
}
$retarr[$fld->name] = $fld;
}
if (isset($savem)) {
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
return $retarr;
}
function MetaColumnNames($table)
{
$table = $this->Quote(strtoupper($table));
return $this->GetCol("SELECT columnname FROM COLUMNS WHERE tablename=$table ORDER BY pos");
}
// unlike it seems, this depends on the db-session and works in a multiuser environment
function _insertid($table,$column)
{