Query/drivers/firebird/firebird_sql.php

393 lines
8.4 KiB
PHP
Raw Normal View History

2012-04-10 14:06:34 -04:00
<?php
/**
* Query
*
* Free Query Builder / Database Abstraction Layer
*
* @author Timothy J. Warren
* @copyright Copyright (c) 2012
* @link https://github.com/aviat4ion/Query
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* Firebird Specific SQL
*/
class Firebird_SQL extends DB_SQL {
/**
* Convienience public function to generate sql for creating a db table
*
* @param string $name
* @param array $fields
* @param array $constraints=array()
* @param array $indexes=array()
*
* @return string
*/
public function create_table($name, $fields, array $constraints=array(), array $indexes=array())
{
$column_array = array();
// Reorganize into an array indexed with column information
// Eg $column_array[$colname] = array(
// 'type' => ...,
// 'constraint' => ...,
// 'index' => ...,
// )
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;
}
}
// Join column definitons together
$columns = array();
foreach($column_array as $n => $props)
{
$str = '"'.$n.'" ';
$str .= (isset($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;
}
// --------------------------------------------------------------------------
/**
* Drop the selected table
*
* @param string $name
* @return string
*/
public function delete_table($name)
{
return 'DROP TABLE "'.$name.'"';
}
// --------------------------------------------------------------------------
/**
* 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;
$sql = 'FIRST '. (int) $limit;
if ($offset > 0)
{
$sql .= ' SKIP '. (int) $offset;
}
$sql = preg_replace("`SELECT`i", "SELECT {$sql}", $orig_sql);
return $sql;
}
// --------------------------------------------------------------------------
/**
* Random ordering keyword
*
* @return string
*/
public function random()
{
return FALSE;
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
public function backup_structure()
{
// @todo Implement Backup structure 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 $output_sql;
}
// --------------------------------------------------------------------------
/**
* Returns sql to list other databases
*
* @return FALSE
*/
public function db_list()
{
return FALSE;
}
// --------------------------------------------------------------------------
/**
* Returns sql to list tables
*
* @return string
*/
public function table_list()
{
return <<<SQL
2012-04-12 13:44:31 -04:00
SELECT "RDB\$RELATION_NAME"
FROM "RDB\$RELATIONS"
WHERE "RDB\$SYSTEM_FLAG"=0
2012-04-10 14:06:34 -04:00
ORDER BY "RDB\$RELATION_NAME" ASC
SQL;
}
// --------------------------------------------------------------------------
/**
* Returns sql to list system tables
*
* @return string
*/
public function system_table_list()
{
return <<<SQL
2012-04-12 13:44:31 -04:00
SELECT "RDB\$RELATION_NAME"
FROM "RDB\$RELATIONS"
WHERE "RDB\$SYSTEM_FLAG"=1
ORDER BY "RDB\$RELATION_NAME" ASC
2012-04-10 14:06:34 -04:00
SQL;
}
// --------------------------------------------------------------------------
/**
* Returns sql to list views
*
* @return string
*/
public function view_list()
{
return <<<SQL
2012-04-12 13:44:31 -04:00
SELECT DISTINCT "RDB\$VIEW_NAME"
FROM "RDB\$VIEW_RELATIONS"
2012-04-10 14:06:34 -04:00
SQL;
}
// --------------------------------------------------------------------------
/**
* Returns sql to list triggers
*
* @return string
*/
public function trigger_list()
{
return <<<SQL
SELECT * FROM "RDB\$FUNCTIONS"
WHERE "RDB\$SYSTEM_FLAG" = 0
SQL;
}
// --------------------------------------------------------------------------
/**
* Return sql to list functions
*
* @return string
*/
public function function_list()
{
2012-04-12 13:44:31 -04:00
return 'SELECT * FROM "RDB$FUNCTIONS"';
2012-04-10 14:06:34 -04:00
}
// --------------------------------------------------------------------------
/**
* Return sql to list stored procedures
*
* @return string
*/
public function procedure_list()
{
2012-04-12 13:44:31 -04:00
return <<<SQL
SELECT "RDB\$PROCEDURE_NAME",
"RDB\$PROCEDURE_ID",
"RDB\$PROCEDURE_INPUTS",
"RDB\$PROCEDURE_OUTPUTS",
"RDB\$DESCRIPTION",
"RDB\$PROCEDURE_SOURCE",
"RDB\$SECURITY_CLASS",
"RDB\$OWNER_NAME",
"RDB\$RUNTIME",
"RDB\$SYSTEM_FLAG",
"RDB\$PROCEDURE_TYPE",
"RDB\$VALID_BLR"
FROM "RDB\$PROCEDURES"
ORDER BY "RDB\$PROCEDURE_NAME" ASC
SQL;
2012-04-10 14:06:34 -04:00
}
// --------------------------------------------------------------------------
/**
* Return sql to list sequences
*
* @return string
*/
public function sequence_list()
{
return <<<SQL
SELECT "RDB\$GENERATOR_NAME"
FROM "RDB\$GENERATORS"
WHERE "RDB\$SYSTEM_FLAG" = 0
SQL;
}
2012-04-12 13:44:31 -04:00
// --------------------------------------------------------------------------
/**
* Return sql to list columns of the specified table
*
* @param string $table
* @return string
*/
public function column_list($table)
{
return <<<SQL
SELECT r.RDB\$FIELD_NAME AS field_name,
r.RDB\$DESCRIPTION AS field_description,
r.RDB\$DEFAULT_VALUE AS field_default_value,
r.RDB\$NULL_FLAG AS field_not_null_constraint,
f.RDB\$FIELD_LENGTH AS field_length,
f.RDB\$FIELD_PRECISION AS field_precision,
f.RDB\$FIELD_SCALE AS field_scale,
CASE f.RDB\$FIELD_TYPE
WHEN 261 THEN 'BLOB'
WHEN 14 THEN 'CHAR'
WHEN 40 THEN 'CSTRING'
WHEN 11 THEN 'D_FLOAT'
WHEN 27 THEN 'DOUBLE'
WHEN 10 THEN 'FLOAT'
WHEN 16 THEN 'INT64'
WHEN 8 THEN 'INTEGER'
WHEN 9 THEN 'QUAD'
WHEN 7 THEN 'SMALLINT'
WHEN 12 THEN 'DATE'
WHEN 13 THEN 'TIME'
WHEN 35 THEN 'TIMESTAMP'
WHEN 37 THEN 'VARCHAR'
ELSE 'UNKNOWN'
END AS field_type,
f.RDB\$FIELD_SUB_TYPE AS field_subtype,
coll.RDB\$COLLATION_NAME AS field_collation,
cset.RDB\$CHARACTER_SET_NAME AS field_charset
FROM RDB\$RELATION_FIELDS r
LEFT JOIN RDB\$FIELDS f ON r.RDB\$FIELD_SOURCE = f.RDB\$FIELD_NAME
LEFT JOIN RDB\$COLLATIONS coll ON f.RDB\$COLLATION_ID = coll.RDB\$COLLATION_ID
LEFT JOIN RDB\$CHARACTER_SETS cset ON f.RDB\$CHARACTER_SET_ID = cset.RDB\$CHARACTER_SET_ID
WHERE r.RDB\$RELATION_NAME='{$table}'
ORDER BY r.RDB\$FIELD_POSITION
SQL;
}
2012-04-10 14:06:34 -04:00
}
//End of firebird_sql.php