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OpenSQLManager/sys/db/drivers/firebird/firebird_sql.php

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<?php
/**
* OpenSQLManager
*
* Free Database manager for Open Source Databases
*
* @author Timothy J. Warren
* @copyright Copyright (c) 2012
* @link https://github.com/aviat4ion/OpenSQLManager
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* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* Firebird Specific SQL
*/
class Firebird_SQL extends DB_SQL {
/**
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* Convienience public function to generate sql for creating a db table
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*
* @param string $name
* @param array $fields
* @param array $constraints=array()
* @param array $indexes=array()
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*
* @return string
*/
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public function create_table($name, $fields, array $constraints=array(), array $indexes=array())
{
$column_array = array();
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// Reorganize into an array indexed with column information
// Eg $column_array[$colname] = array(
// 'type' => ...,
// 'constraint' => ...,
// 'index' => ...,
// )
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foreach($fields as $colname => $type)
{
if(is_numeric($colname))
{
$colname = $type;
}
$column_array[$colname] = array();
$column_array[$colname]['type'] = ($type !== $colname) ? $type : '';
}
if( ! empty($constraints))
{
foreach($constraints as $col => $const)
{
$column_array[$col]['constraint'] = $const;
}
}
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// Join column definitons together
$columns = array();
foreach($column_array as $n => $props)
{
$str = '"'.$n.'" ';
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$str .= (isset($props['type'])) ? "{$props['type']} " : "";
$str .= (isset($props['constraint'])) ? "{$props['constraint']} " : "";
$columns[] = $str;
}
// Generate the sql for the creation of the table
$sql = 'CREATE TABLE "'.$name.'" (';
$sql .= implode(',', $columns);
$sql .= ')';
return $sql;
}
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// --------------------------------------------------------------------------
/**
* Drop the selected table
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*
* @param string $name
* @return string
*/
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public function delete_table($name)
{
return 'DROP TABLE "'.$name.'"';
}
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// --------------------------------------------------------------------------
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/**
* Limit clause
*
* @param string $sql
* @param int $limit
* @param int $offset
* @return string
*/
public function limit($sql, $limit, $offset=FALSE)
{
// Keep the current sql string safe for a moment
$orig_sql = $sql;
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$sql = 'FIRST '. (int) $limit;
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if ($offset > 0)
{
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$sql .= ' SKIP '. (int) $offset;
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}
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$sql = preg_replace("`SELECT`i", "SELECT {$sql}", $orig_sql);
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return $sql;
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}
// --------------------------------------------------------------------------
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/**
* Random ordering keyword
*
* @return string
*/
public function random()
{
return FALSE;
}
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// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
public function backup_structure()
{
// @todo Implement Backup function
return '';
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's data
*
* @param array $exclude
* @param bool $system_tables
* @return string
*/
public function backup_data($exclude=array(), $system_tables=FALSE)
{
// Determine which tables to use
if($system_tables == TRUE)
{
$tables = array_merge($this->get_system_tables(), $this->get_tables());
}
else
{
$tables = $this->get_tables();
}
// Filter out the tables you don't want
if( ! empty($exclude))
{
$tables = array_diff($tables, $exclude);
}
$output_sql = '';
// Get the data for each object
foreach($tables as $t)
{
$sql = 'SELECT * FROM "'.trim($t).'"';
$res = $this->query($sql);
$obj_res = $this->fetchAll(PDO::FETCH_ASSOC);
unset($res);
// Nab the column names by getting the keys of the first row
$columns = @array_keys($obj_res[0]);
$insert_rows = array();
// Create the insert statements
foreach($obj_res as $row)
{
$row = array_values($row);
// Quote values as needed by type
if(stripos($t, 'RDB$') === FALSE)
{
$row = array_map(array(&$this, 'quote'), $row);
$row = array_map('trim', $row);
}
$row_string = 'INSERT INTO "'.trim($t).'" ("'.implode('","', $columns).'") VALUES ('.implode(',', $row).');';
unset($row);
$insert_rows[] = $row_string;
}
unset($obj_res);
$output_sql .= "\n\nSET TRANSACTION;\n".implode("\n", $insert_rows)."\nCOMMIT;";
}
return $output_sql;
}
}
//End of firebird_sql.php