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- fixed Oracle's large data handling

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- Firebird explodes when you deal with single column update/inserts over 32767, we now turn these queries into prepared statements


git-svn-id: file:///svn/phpbb/trunk@7326 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
David M 2007-04-11 02:23:21 +00:00
parent b07520669c
commit b62268e8c2
2 changed files with 117 additions and 38 deletions
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75
phpBB/includes/db/firebird.php
View file

@ -109,7 +109,80 @@ class dbal_firebird extends dbal
if ($this->query_result === false)
{
if (($this->query_result = @ibase_query($this->db_connect_id, $query)) === false)
$prepared = false;
// We overcome Firebird's 32767 char limit by binding vars
if (strlen($query) > 32767)
{
$array = array();
if (preg_match('/^(INSERT INTO[^(]+)\\(([^()]+)\\) VALUES[^(]+\\((.*?)\\)$/s', $query, $regs))
{
if (strlen($regs[3]) > 32767)
{
preg_match_all('/\'(?:[^\']++|\'\')*+\'|\\d+/', $regs[3], $vals, PREG_PATTERN_ORDER);
$inserts = $vals[0];
unset($vals);
foreach ($inserts as $key => $value)
{
if (!empty($value) && $value[0] === "'" && strlen($value) > 32769) // check to see if this thing is greater than the max + 'x2
{
$inserts[$key] = '?';
$array[] = str_replace("''", "'", substr($value, 1, -1));
}
}
$query = $regs[1] . '(' . $regs[2] . ') VALUES (' . implode(', ', $inserts) . ')';
unset($art);
$prepared = true;
}
}
else if (preg_match_all('/^(UPDATE ([\\w_]++)\\s+SET )(\\w+ = (?:\'(?:[^\']++|\'\')*+\'|\\d+)(?:, \\w+ = (?:\'(?:[^\']++|\'\')*+\'|\\d+))*+)\\s+(WHERE.*)$/s', $query, $data, PREG_SET_ORDER))
{
if (strlen($data[0][3]) > 32767)
{
$update = $data[0][1];
$where = $data[0][4];
preg_match_all('/(\\w++) = (\'(?:[^\']++|\'\')*+\'|\\d++)/', $data[0][3], $temp, PREG_SET_ORDER);
unset($data);
$art = array();
foreach ($temp as $value)
{
if (!empty($value[2]) && $value[2][0] === "'" && strlen($value[2]) > 32769) // check to see if this thing is greater than the max + 'x2
{
$array[] = str_replace("''", "'", substr($value[2], 1, -1));
$art[] = $value[1] . '=?';
}
else
{
$art[] = $value[1] . '=' . $value[2];
}
}
$query = $update . implode(', ', $art) . ' ' . $where;
unset($art);
$prepared = true;
}
}
}
if ($prepared)
{
$p_query = ibase_prepare($this->db_connect_id, $query);
array_unshift($array, $p_query);
$this->query_result = call_user_func_array('ibase_execute', $array);
unset($array);
if ($this->query_result === false)
{
$this->sql_error($query);
}
}
else if (($this->query_result = @ibase_query($this->db_connect_id, $query)) === false)
{
$this->sql_error($query);
}

10
phpBB/includes/db/oracle.php
View file

@ -110,9 +110,11 @@ class dbal_oracle extends dbal
$in_transaction = true;
}
// We overcome Oracle's 4000 char limit by binding vars
if (strlen($query) > 4000)
{
$array = array();
// We overcome Oracle's 4000 char limit by binding vars
if (preg_match('/^(INSERT INTO[^(]+)\\(([^()]+)\\) VALUES[^(]+\\((.*?)\\)$/s', $query, $regs))
{
if (strlen($regs[3]) > 4000)
@ -131,7 +133,9 @@ class dbal_oracle extends dbal
$array[$inserts[$key]] = str_replace("''", "'", substr($value, 1, -1));
}
}
$query = $regs[1] . '(' . $regs[2] . ') VALUES (' . implode(', ', $inserts) . ')';
unset($art);
}
}
else if (preg_match_all('/^(UPDATE [\\w_]++\\s+SET )(\\w+ = (?:\'(?:[^\']++|\'\')*+\'|\\d+)(?:, \\w+ = (?:\'(?:[^\']++|\'\')*+\'|\\d+))*+)\\s+(WHERE.*)$/s', $query, $data, PREG_SET_ORDER))
@ -149,7 +153,7 @@ class dbal_oracle extends dbal
if (!empty($value[2]) && $value[2][0] === "'" && strlen($value[2]) > 4002) // check to see if this thing is greater than the max + 'x2
{
$art[] = $value[1] . '=:' . strtoupper($value[1]);
$array[$cols[$value[1]]] = str_replace("''", "'", substr($value[2], 1, -1));
$array[$value[1]] = str_replace("''", "'", substr($value[2], 1, -1));
}
else
{
@ -158,6 +162,8 @@ class dbal_oracle extends dbal
}
$query = $update . implode(', ', $art) . ' ' . $where;
unset($art);
}
}
}