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[ticket/12710] Fix changing the column type on oracle

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PHPBB3-12710
This commit is contained in:
Joas Schilling 2014-08-07 19:45:34 +02:00
parent 339bf90ec2
commit b39305b9f6
1 changed files with 130 additions and 48 deletions
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118
phpBB/phpbb/db/tools.php
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@ -2345,7 +2345,69 @@ class tools
break; break;
case 'oracle': case 'oracle':
$statements[] = 'ALTER TABLE ' . $table_name . ' MODIFY ' . $column_name . ' ' . $column_data['column_type_sql']; // We need the data here
$old_return_statements = $this->return_statements;
$this->return_statements = true;
// Get list of existing indexes
$indexes = $this->get_existing_indexes($table_name, $column_name);
$unique_indexes = $this->get_existing_indexes($table_name, $column_name, true);
// Drop any indexes
if (!empty($indexes) || !empty($unique_indexes))
{
$drop_indexes = array_merge(array_keys($indexes), array_keys($unique_indexes));
foreach ($drop_indexes as $index_name => $index_data)
{
$result = $this->sql_index_drop($table_name, $index_name);
$statements = array_merge($statements, $result);
}
}
$temp_column_name = substr(md5($column_name), 0, 30);
// Add a temporary table with the new type
$result = $this->sql_column_add($table_name, $temp_column_name, $column_data);
$statements = array_merge($statements, $result);
// Copy the data to the new column
$statements[] = 'UPDATE ' . $table_name . ' SET ' . $temp_column_name . ' = ' . $column_name;
// Drop the original column
$result = $this->sql_column_remove($table_name, $column_name);
$statements = array_merge($statements, $result);
// Recreate the original column with the new type
$result = $this->sql_column_add($table_name, $column_name, $column_data);
$statements = array_merge($statements, $result);
if (!empty($indexes))
{
// Recreate indexes after we changed the column
foreach ($indexes as $index_name => $index_data)
{
$result = $this->sql_create_index($table_name, $index_name, $index_data);
$statements = array_merge($statements, $result);
}
}
if (!empty($unique_indexes))
{
// Recreate unique indexes after we changed the column
foreach ($unique_indexes as $index_name => $index_data)
{
$result = $this->sql_create_unique_index($table_name, $index_name, $index_data);
$statements = array_merge($statements, $result);
}
}
// Copy the data to the original column
$statements[] = 'UPDATE ' . $table_name . ' SET ' . $column_name . ' = ' . $temp_column_name;
// Drop the temporary column again
$result = $this->sql_column_remove($table_name, $temp_column_name);
$statements = array_merge($statements, $result);
$this->return_statements = $old_return_statements;
break; break;
case 'postgres': case 'postgres':
@ -2534,6 +2596,19 @@ class tools
*/ */
public function get_existing_indexes($table_name, $column_name, $unique = false) public function get_existing_indexes($table_name, $column_name, $unique = false)
{ {
switch ($this->sql_layer)
{
case 'mysql_40':
case 'mysql_41':
case 'postgres':
case 'sqlite':
case 'sqlite3':
// Not supported
throw new \Exception('DBMS is not supported');
break;
}
$sql = '';
$existing_indexes = array(); $existing_indexes = array();
switch ($this->sql_layer) switch ($this->sql_layer)
@ -2574,9 +2649,19 @@ class tools
WHERE ix.object_id = object_id('{$table_name}') WHERE ix.object_id = object_id('{$table_name}')
AND cols.name = '{$column_name}'"; AND cols.name = '{$column_name}'";
} }
break;
case 'oracle':
$sql = "SELECT ixc.column_name AS phpbb_index_name
FROM all_ind_columns ixc, all_indexes ix
WHERE ix.index_name = ixc.index_name
AND ixc.table_name = UPPER('{$table_name}')
AND ixc.index_name = UPPER('{$column_name}')
AND ix.uniqueness = " . ($unique) ? "'UNIQUE'" : "'NONUNIQUE'";
break;
}
$result = $this->db->sql_query($sql); $result = $this->db->sql_query($sql);
$existing_indexes = array();
while ($row = $this->db->sql_fetchrow($result)) while ($row = $this->db->sql_fetchrow($result))
{ {
$existing_indexes[$row['phpbb_index_name']] = array(); $existing_indexes[$row['phpbb_index_name']] = array();
@ -2588,6 +2673,10 @@ class tools
return array(); return array();
} }
switch ($this->sql_layer)
{
case 'mssql':
case 'mssqlnative':
if ($this->mssql_is_sql_server_2000()) if ($this->mssql_is_sql_server_2000())
{ {
$sql = "SELECT DISTINCT ix.name AS phpbb_index_name, cols.name AS phpbb_column_name $sql = "SELECT DISTINCT ix.name AS phpbb_index_name, cols.name AS phpbb_column_name
@ -2614,29 +2703,22 @@ class tools
WHERE ix.object_id = object_id('{$table_name}') WHERE ix.object_id = object_id('{$table_name}')
AND " . $this->db->sql_in_set('ix.name', array_keys($existing_indexes)); AND " . $this->db->sql_in_set('ix.name', array_keys($existing_indexes));
} }
break;
case 'oracle':
$sql = "SELECT index_name AS phpbb_index_name, column_name AS phpbb_column_name
FROM all_ind_columns
WHERE table_name = UPPER('{$table_name}')
AND " . $this->db->sql_in_set('index_name', array_keys($existing_indexes));
break;
}
$result = $this->db->sql_query($sql); $result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result)) while ($row = $this->db->sql_fetchrow($result))
{ {
$existing_indexes[$row['phpbb_index_name']][] = $row['phpbb_column_name']; $existing_indexes[$row['phpbb_index_name']][] = $row['phpbb_column_name'];
} }
$this->db->sql_freeresult($result); $this->db->sql_freeresult($result);
break;
case 'oracle':
throw new \Exception('Needs implementing');
break;
case 'mysql_40':
case 'mysql_41':
case 'postgres':
case 'sqlite':
case 'sqlite3':
// Not supported
throw new \Exception('DBMS is not supported');
break;
}
return $existing_indexes; return $existing_indexes;
} }