';
ora_commiton($this->Link_ID);
}
if($this->Debug)
{
printf("
connect() Obtained the Link_ID: $this->Link_ID
\n");
}
}
}
## In order to increase the # of cursors per system/user go edit the
## init.ora file and increase the max_open_cursors parameter. Yours is on
## the default value, 100 per user.
## We tried to change the behaviour of query() in a way, that it tries
## to safe cursors, but on the other side be carefull with this, that you
## don't use an old result.
##
## You can also make extensive use of ->disconnect()!
## The unused QueryIDs will be recycled sometimes.
function query($Query_String)
{
/* No empty queries, please, since PHP4 chokes on them. */
if ($Query_String == '')
{
/* The empty query string is passed on from the constructor,
* when calling the class without a query, e.g. in situations
* like these: '$db = new DB_Sql_Subclass;'
*/
return 0;
}
$this->connect();
$this->lastQuery=$Query_String;
if (!$this->Query_ID)
{
$this->Query_ID = ora_open($this->Link_ID);
}
if($this->Debug)
{
printf("Debug: query = %s
\n", $Query_String);
printf("
Debug: Query_ID: %d
\n", $this->Query_ID);
}
if(!@ora_parse($this->Query_ID,$Query_String))
{
$this->Errno=ora_errorcode($this->Query_ID);
$this->Error=ora_error($this->Query_ID);
$this->halt("
ora_parse() failed:
$Query_String
Snap & paste this to sqlplus!");
}
elseif (!@ora_exec($this->Query_ID))
{
$this->Errno=ora_errorcode($this->Query_ID);
$this->Error=ora_error($this->Query_ID);
$this->halt("
\n$Query_String\n
Snap & paste this to sqlplus!");
}
$this->Row=0;
if(!$this->Query_ID)
{
$this->halt('Invalid SQL: '.$Query_String);
}
return $this->Query_ID;
}
function next_record()
{
if (!$this->no_next_fetch &&
0 == ora_fetch($this->Query_ID))
{
if ($this->Debug)
{
printf("
next_record(): ID: %d,Rows: %d
\n",
$this->Query_ID,$this->num_rows());
}
$this->Row +=1;
$errno=ora_errorcode($this->Query_ID);
if(1403 == $errno)
{ # 1043 means no more records found
$this->Errno = 0;
$this->Error = '';
$this->disconnect();
$stat=0;
}
else
{
$this->Error=ora_error($this->Query_ID);
$this->Errno=$errno;
if($this->Debug)
{
printf('
%d Error: %s',
$this->Errno,
$this->Error);
}
$stat=0;
}
}
else
{
$this->no_next_fetch=false;
for($ix=0;$ix
\n";
}
$stat=1;
}
return $stat;
}
## seek() works only for $pos - 1 and $pos
## Perhaps I make a own implementation, but my
## opinion is, that this should be done by PHP3
function seek($pos)
{
if($this->Row - 1 == $pos)
{
$this->no_next_fetch=true;
}
elseif ($this->Row == $pos )
{
## do nothing
}
else
{
$this->halt("Invalid seek(): Position is cannot be handled by API.
".
"Difference too big. Wanted: $pos Current pos: $this->Row");
}
if($Debug)
{
echo "
Debug: seek = $pos
";
}
$this->Row=$pos;
}
function lock($table, $mode = 'write')
{
if ($mode == 'write')
{
$result = ora_do($this->Link_ID, "lock table $table in row exclusive mode");
}
else
{
$result = 1;
}
return $result;
}
function unlock()
{
return ora_do($this->Link_ID, 'commit');
}
function metadata($table,$full=false)
{
$count = 0;
$id = 0;
$res = array();
/*
* Due to compatibility problems with Table we changed the behavior
* of metadata();
* depending on $full, metadata returns the following values:
*
* - full is false (default):
* $result[]:
* [0]['table'] table name
* [0]['name'] field name
* [0]['type'] field type
* [0]['len'] field length
* [0]['flags'] field flags ('NOT NULL', 'INDEX')
* [0]['format'] precision and scale of number (eg. '10,2') or empty
* [0]['index'] name of index (if has one)
* [0]['chars'] number of chars (if any char-type)
*
* - full is true
* $result[]:
* ['num_fields'] number of metadata records
* [0]['table'] table name
* [0]['name'] field name
* [0]['type'] field type
* [0]['len'] field length
* [0]['flags'] field flags ('NOT NULL', 'INDEX')
* [0]['format'] precision and scale of number (eg. '10,2') or empty
* [0]['index'] name of index (if has one)
* [0]['chars'] number of chars (if any char-type)
* ['meta'][field name] index of field named 'field name'
* The last one is used, if you have a field name, but no index.
* Test: if (isset($result['meta']['myfield'])) {} ...
*/
$this->connect();
## This is a RIGHT OUTER JOIN: '(+)', if you want to see, what
## this query results try the following:
## $table = new Table; $db = new my_DB_Sql; # you have to make
## # your own class
## $table->show_results($db->query(see query vvvvvv))
##
$this->query("SELECT T.table_name,T.column_name,T.data_type,".
"T.data_length,T.data_precision,T.data_scale,T.nullable,".
"T.char_col_decl_length,I.index_name".
" FROM ALL_TAB_COLUMNS T,ALL_IND_COLUMNS I".
" WHERE T.column_name=I.column_name (+)".
" AND T.table_name=I.table_name (+)".
" AND T.table_name=UPPER('$table') ORDER BY T.column_id");
$i=0;
while ($this->next_record())
{
$res[$i]['table'] = $this->Record[table_name];
$res[$i]['name'] = strtolower($this->Record[column_name]);
$res[$i]['type'] = $this->Record[data_type];
$res[$i]['len'] = $this->Record[data_length];
if ($this->Record[index_name])
{
$res[$i]['flags'] = 'INDEX ';
}
$res[$i]['flags'] .= ( $this->Record['nullable'] == 'N') ? '' : 'NOT NULL';
$res[$i]['format']= (int)$this->Record['data_precision'].','.
(int)$this->Record[data_scale];
if ('0,0'==$res[$i]['format'])
{
$res[$i]['format']='';
}
$res[$i]['index'] = $this->Record[index_name];
$res[$i]['chars'] = $this->Record[char_col_decl_length];
if ($full)
{
$j=$res[$i]['name'];
$res['meta'][$j] = $i;
$res['meta'][strtoupper($j)] = $i;
}
if ($full)
{
$res['meta'][$res[$i]['name']] = $i;
}
$i++;
}
if ($full)
{
$res['num_fields']=$i;
}
# $this->disconnect();
return $res;
}
## THIS FUNCTION IS UNSTESTED!
function affected_rows()
{
if ($Debug)
{
echo '
Debug: affected_rows='. ora_numrows($this->Query_ID).'
';
}
return ora_numrows($this->Query_ID);
}
## Known bugs: It will not work for SELECT DISTINCT and any
## other constructs which are depending on the resulting rows.
## So you *really need* to check every query you make, if it
## will work with it.
##
## Also, for a qualified replacement you need to parse the
## selection, cause this will fail: 'SELECT id, from FROM ...').
## 'FROM' is - as far as I know a keyword in Oracle, so it can
## only be used in this way. But you have been warned.
function num_rows()
{
$curs=ora_open($this->Link_ID);
## this is the important part and it is also the HACK!
if (eregi("^[[:space:]]*SELECT[[:space:]]",$this->lastQuery) )
{
$from_pos = strpos(strtoupper($this->lastQuery),'FROM');
$q = 'SELECT count(*) '. substr($this->lastQuery, $from_pos);
ORA_parse($curs,$q);
ORA_exec($curs);
ORA_fetch($curs);
if ($Debug)
{
echo '
Debug: num_rows='. ORA_getcolumn($curs,0).'
';
}
return(ORA_getcolumn($curs,0));
}
else
{
$this->halt("Last Query was not a SELECT: $this->lastQuery");
}
}
function num_fields()
{
if ($Debug)
{
echo '
Debug: num_fields='. ora_numcols($this->Query_ID) . '
';
}
return ora_numcols($this->Query_ID);
}
/* public: sequence number */
function nextid($seq_name)
{
$this->connect();
/* Independent Query_ID */
$Query_ID = ora_open($this->Link_ID);
if(!@ora_parse($Query_ID,"SELECT $seq_name.NEXTVAL FROM DUAL"))
{
// There is no such sequence yet, then create it
if(!@ora_parse($Query_ID,"CREATE SEQUENCE $seq_name") ||
!@ora_exec($Query_ID))
{
$this->halt('
nextid() function - unable to create sequence');
return 0;
}
@ora_parse($Query_ID,"SELECT $seq_name.NEXTVAL FROM DUAL");
}
if (!@ora_exec($Query_ID))
{
$this->halt("
ora_exec() failed:
nextID function");
}
if (@ora_fetch($Query_ID) )
{
$next_id = ora_getcolumn($Query_ID, 0);
}
else
{
$next_id = 0;
}
if ( Query_ID > 0 )
{
ora_close(Query_ID);
}
return $next_id;
}
function disconnect()
{
if($this->Debug)
{
echo "Debug: Disconnecting $this->Query_ID...
\n";
}
if ( $this->Query_ID < 1 )
{
echo "Warning: disconnect(): Cannot free ID $this->Query_ID\n";
# return();
}
ora_close($this->Query_ID);
$this->Query_ID=0;
}
/* private: error handling */
function halt($msg)
{
if ($this->Halt_On_Error == 'no')
{
return;
}
$this->haltmsg($msg);
if ($this->Halt_On_Error != 'report')
{
die('Session halted.');
}
}
function haltmsg($msg)
{
printf("Database error: %s
\n", $msg);
printf("Oracle Error: %s (%s)
\n",
$this->Errno,
$this->Error);
}
function table_names()
{
$this->connect();
$this->query('SELECT table_name,tablespace_name FROM user_tables');
$i=0;
while ($this->next_record())
{
$info[$i]['table_name'] = strtolower($this->Record['table_name']);
$info[$i]['tablespace_name'] = $this->Record['tablespace_name'];
$i++;
}
return $info;
}
}