<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\db\extractor;
use phpbb\db\extractor\exception\extractor_not_initialized_exception;
class oracle_extractor extends base_extractor
{
/**
* {@inheritdoc}
*/
public function write_table($table_name)
{
if (!$this->is_initialized)
{
throw new extractor_not_initialized_exception();
}
$sql_data = '-- Table: ' . $table_name . "\n";
$sql_data .= "DROP TABLE $table_name\n/\n";
$sql_data .= "\nCREATE TABLE $table_name (\n";
$sql = "SELECT COLUMN_NAME, DATA_TYPE, DATA_PRECISION, DATA_LENGTH, NULLABLE, DATA_DEFAULT
FROM ALL_TAB_COLS
WHERE table_name = '{$table_name}'";
$result = $this->db->sql_query($sql);
$rows = array();
while ($row = $this->db->sql_fetchrow($result))
{
$line = ' "' . $row['column_name'] . '" ' . $row['data_type'];
if ($row['data_type'] !== 'CLOB')
{
if ($row['data_type'] !== 'VARCHAR2' && $row['data_type'] !== 'CHAR')
{
$line .= '(' . $row['data_precision'] . ')';
}
else
{
$line .= '(' . $row['data_length'] . ')';
}
}
if (!empty($row['data_default']))
{
$line .= ' DEFAULT ' . $row['data_default'];
}
if ($row['nullable'] == 'N')
{
$line .= ' NOT NULL';
}
$rows[] = $line;
}
$this->db->sql_freeresult($result);
$sql = "SELECT A.CONSTRAINT_NAME, A.COLUMN_NAME
FROM USER_CONS_COLUMNS A, USER_CONSTRAINTS B
WHERE A.CONSTRAINT_NAME = B.CONSTRAINT_NAME
AND B.CONSTRAINT_TYPE = 'P'
AND A.TABLE_NAME = '{$table_name}'";
$result = $this->db->sql_query($sql);
$primary_key = array();
$constraint_name = '';
while ($row = $this->db->sql_fetchrow($result))
{
$constraint_name = '"' . $row['constraint_name'] . '"';
$primary_key[] = '"' . $row['column_name'] . '"';
}
$this->db->sql_freeresult($result);
if (count($primary_key))
{
$rows[] = " CONSTRAINT {$constraint_name} PRIMARY KEY (" . implode(', ', $primary_key) . ')';
}
$sql = "SELECT A.CONSTRAINT_NAME, A.COLUMN_NAME
FROM USER_CONS_COLUMNS A, USER_CONSTRAINTS B
WHERE A.CONSTRAINT_NAME = B.CONSTRAINT_NAME
AND B.CONSTRAINT_TYPE = 'U'
AND A.TABLE_NAME = '{$table_name}'";
$result = $this->db->sql_query($sql);
$unique = array();
$constraint_name = '';
while ($row = $this->db->sql_fetchrow($result))
{
$constraint_name = '"' . $row['constraint_name'] . '"';
$unique[] = '"' . $row['column_name'] . '"';
}
$this->db->sql_freeresult($result);
if (count($unique))
{
$rows[] = " CONSTRAINT {$constraint_name} UNIQUE (" . implode(', ', $unique) . ')';
}
$sql_data .= implode(",\n", $rows);
$sql_data .= "\n)\n/\n";
$sql = "SELECT A.REFERENCED_NAME, C.*
FROM USER_DEPENDENCIES A, USER_TRIGGERS B, USER_SEQUENCES C
WHERE A.REFERENCED_TYPE = 'SEQUENCE'
AND A.NAME = B.TRIGGER_NAME
AND B.TABLE_NAME = '{$table_name}'
AND C.SEQUENCE_NAME = A.REFERENCED_NAME";
$result = $this->db->sql_query($sql);
$type = $this->request->variable('type', '');
while ($row = $this->db->sql_fetchrow($result))
{
$sql_data .= "\nDROP SEQUENCE \"{$row['referenced_name']}\"\n/\n";
$sql_data .= "\nCREATE SEQUENCE \"{$row['referenced_name']}\"";
if ($type == 'full')
{
$sql_data .= ' START WITH ' . $row['last_number'];
}
$sql_data .= "\n/\n";
}
$this->db->sql_freeresult($result);
$sql = "SELECT DESCRIPTION, WHEN_CLAUSE, TRIGGER_BODY
FROM USER_TRIGGERS
WHERE TABLE_NAME = '{$table_name}'";
$result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result))
{
$sql_data .= "\nCREATE OR REPLACE TRIGGER {$row['description']}WHEN ({$row['when_clause']})\n{$row['trigger_body']}\n/\n";
}
$this->db->sql_freeresult($result);
$sql = "SELECT A.INDEX_NAME, B.COLUMN_NAME
FROM USER_INDEXES A, USER_IND_COLUMNS B
WHERE A.UNIQUENESS = 'NONUNIQUE'
AND A.INDEX_NAME = B.INDEX_NAME
AND B.TABLE_NAME = '{$table_name}'";
$result = $this->db->sql_query($sql);
$index = array();
while ($row = $this->db->sql_fetchrow($result))
{
$index[$row['index_name']][] = $row['column_name'];
}
foreach ($index as $index_name => $column_names)
{
$sql_data .= "\nCREATE INDEX $index_name ON $table_name(" . implode(', ', $column_names) . ")\n/\n";
}
$this->db->sql_freeresult($result);
$this->flush($sql_data);
}
/**
* {@inheritdoc}
*/
public function write_data($table_name)
{
if (!$this->is_initialized)
{
throw new extractor_not_initialized_exception();
}
$ary_type = $ary_name = array();
// Grab all of the data from current table.
$sql = "SELECT *
FROM $table_name";
$result = $this->db->sql_query($sql);
$i_num_fields = ocinumcols($result);
for ($i = 0; $i < $i_num_fields; $i++)
{
$ary_type[$i] = ocicolumntype($result, $i + 1);
$ary_name[$i] = ocicolumnname($result, $i + 1);
}
while ($row = $this->db->sql_fetchrow($result))
{
$schema_vals = $schema_fields = array();
// Build the SQL statement to recreate the data.
for ($i = 0; $i < $i_num_fields; $i++)
{
// Oracle uses uppercase - we use lowercase
$str_val = $row[strtolower($ary_name[$i])];
if (preg_match('#char|text|bool|raw|clob#i', $ary_type[$i]))
{
$str_quote = '';
$str_empty = "''";
$str_val = sanitize_data_oracle($str_val);
}
else if (preg_match('#date|timestamp#i', $ary_type[$i]))
{
if (empty($str_val))
{
$str_quote = '';
}
else
{
$str_quote = "'";
}
}
else
{
$str_quote = '';
$str_empty = 'NULL';
}
if (empty($str_val) && $str_val !== '0')
{
$str_val = $str_empty;
}
$schema_vals[$i] = $str_quote . $str_val . $str_quote;
$schema_fields[$i] = '"' . $ary_name[$i] . '"';
}
// Take the ordered fields and their associated data and build it
// into a valid sql statement to recreate that field in the data.
$sql_data = "INSERT INTO $table_name (" . implode(', ', $schema_fields) . ') VALUES (' . implode(', ', $schema_vals) . ")\n/\n";
$this->flush($sql_data);
}
$this->db->sql_freeresult($result);
}
/**
* {@inheritdoc}
*/
public function write_start($table_prefix)
{
if (!$this->is_initialized)
{
throw new extractor_not_initialized_exception();
}
$sql_data = "--\n";
$sql_data .= "-- phpBB Backup Script\n";
$sql_data .= "-- Dump of tables for $table_prefix\n";
$sql_data .= "-- DATE : " . gmdate("d-m-Y H:i:s", $this->time) . " GMT\n";
$sql_data .= "--\n";
$this->flush($sql_data);
}
}