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PK ! \}["b b postgre_forge.phpnu „[µü¤ 'INTEGER',
'SMALLINT' => 'INTEGER',
'INT' => 'BIGINT',
'INT4' => 'BIGINT',
'INTEGER' => 'BIGINT',
'INT8' => 'NUMERIC',
'BIGINT' => 'NUMERIC',
'REAL' => 'DOUBLE PRECISION',
'FLOAT' => 'DOUBLE PRECISION'
);
/**
* NULL value representation in CREATE/ALTER TABLE statements
*
* @var string
*/
protected $_null = 'NULL';
// --------------------------------------------------------------------
/**
* Class constructor
*
* @param object &$db Database object
* @return void
*/
public function __construct(&$db)
{
parent::__construct($db);
if (version_compare($this->db->version(), '9.0', '>'))
{
$this->create_table_if = 'CREATE TABLE IF NOT EXISTS';
}
}
// --------------------------------------------------------------------
/**
* ALTER TABLE
*
* @param string $alter_type ALTER type
* @param string $table Table name
* @param mixed $field Column definition
* @return string|string[]
*/
protected function _alter_table($alter_type, $table, $field)
{
if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
{
return parent::_alter_table($alter_type, $table, $field);
}
$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
$sqls = array();
for ($i = 0, $c = count($field); $i < $c; $i++)
{
if ($field[$i]['_literal'] !== FALSE)
{
return FALSE;
}
if (version_compare($this->db->version(), '8', '>=') && isset($field[$i]['type']))
{
$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
.' TYPE '.$field[$i]['type'].$field[$i]['length'];
}
if ( ! empty($field[$i]['default']))
{
$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
.' SET DEFAULT '.$field[$i]['default'];
}
if (isset($field[$i]['null']))
{
$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
.(trim($field[$i]['null']) === $this->_null ? ' DROP NOT NULL' : ' SET NOT NULL');
}
if ( ! empty($field[$i]['new_name']))
{
$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
}
if ( ! empty($field[$i]['comment']))
{
$sqls[] = 'COMMENT ON COLUMN '
.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
.' IS '.$field[$i]['comment'];
}
}
return $sqls;
}
// --------------------------------------------------------------------
/**
* Field attribute TYPE
*
* Performs a data type mapping between different databases.
*
* @param array &$attributes
* @return void
*/
protected function _attr_type(&$attributes)
{
// Reset field lengths for data types that don't support it
if (isset($attributes['CONSTRAINT']) && stripos($attributes['TYPE'], 'int') !== FALSE)
{
$attributes['CONSTRAINT'] = NULL;
}
switch (strtoupper($attributes['TYPE']))
{
case 'TINYINT':
$attributes['TYPE'] = 'SMALLINT';
$attributes['UNSIGNED'] = FALSE;
return;
case 'MEDIUMINT':
$attributes['TYPE'] = 'INTEGER';
$attributes['UNSIGNED'] = FALSE;
return;
default: return;
}
}
// --------------------------------------------------------------------
/**
* Field attribute AUTO_INCREMENT
*
* @param array &$attributes
* @param array &$field
* @return void
*/
protected function _attr_auto_increment(&$attributes, &$field)
{
if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
{
$field['type'] = ($field['type'] === 'NUMERIC')
? 'BIGSERIAL'
: 'SERIAL';
}
}
}
PK ! Äiq~9 ~9 postgre_driver.phpnu „[µü¤ dsn))
{
return;
}
$this->dsn === '' OR $this->dsn = '';
if (strpos($this->hostname, '/') !== FALSE)
{
// If UNIX sockets are used, we shouldn't set a port
$this->port = '';
}
$this->hostname === '' OR $this->dsn = 'host='.$this->hostname.' ';
if ( ! empty($this->port) && ctype_digit($this->port))
{
$this->dsn .= 'port='.$this->port.' ';
}
if ($this->username !== '')
{
$this->dsn .= 'user='.$this->username.' ';
/* An empty password is valid!
*
* $db['password'] = NULL must be done in order to ignore it.
*/
$this->password === NULL OR $this->dsn .= "password='".$this->password."' ";
}
$this->database === '' OR $this->dsn .= 'dbname='.$this->database.' ';
/* We don't have these options as elements in our standard configuration
* array, but they might be set by parse_url() if the configuration was
* provided via string. Example:
*
* postgre://username:password@localhost:5432/database?connect_timeout=5&sslmode=1
*/
foreach (array('connect_timeout', 'options', 'sslmode', 'service') as $key)
{
if (isset($this->$key) && is_string($this->$key) && $this->$key !== '')
{
$this->dsn .= $key."='".$this->$key."' ";
}
}
$this->dsn = rtrim($this->dsn);
}
// --------------------------------------------------------------------
/**
* Database connection
*
* @param bool $persistent
* @return resource
*/
public function db_connect($persistent = FALSE)
{
$this->conn_id = ($persistent === TRUE)
? pg_pconnect($this->dsn)
: pg_connect($this->dsn);
if ($this->conn_id !== FALSE)
{
if ($persistent === TRUE
&& pg_connection_status($this->conn_id) === PGSQL_CONNECTION_BAD
&& pg_ping($this->conn_id) === FALSE
)
{
return FALSE;
}
empty($this->schema) OR $this->simple_query('SET search_path TO '.$this->schema.',public');
}
return $this->conn_id;
}
// --------------------------------------------------------------------
/**
* Reconnect
*
* Keep / reestablish the db connection if no queries have been
* sent for a length of time exceeding the server's idle timeout
*
* @return void
*/
public function reconnect()
{
if (pg_ping($this->conn_id) === FALSE)
{
$this->conn_id = FALSE;
}
}
// --------------------------------------------------------------------
/**
* Set client character set
*
* @param string $charset
* @return bool
*/
protected function _db_set_charset($charset)
{
return (pg_set_client_encoding($this->conn_id, $charset) === 0);
}
// --------------------------------------------------------------------
/**
* Database version number
*
* @return string
*/
public function version()
{
if (isset($this->data_cache['version']))
{
return $this->data_cache['version'];
}
if ( ! $this->conn_id OR ($pg_version = pg_version($this->conn_id)) === FALSE)
{
return FALSE;
}
/* If PHP was compiled with PostgreSQL lib versions earlier
* than 7.4, pg_version() won't return the server version
* and so we'll have to fall back to running a query in
* order to get it.
*/
return (isset($pg_version['server']) && preg_match('#^(\d+\.\d+)#', $pg_version['server'], $match))
? $this->data_cache['version'] = $match[1]
: parent::version();
}
// --------------------------------------------------------------------
/**
* Execute the query
*
* @param string $sql an SQL query
* @return resource
*/
protected function _execute($sql)
{
return pg_query($this->conn_id, $sql);
}
// --------------------------------------------------------------------
/**
* Begin Transaction
*
* @return bool
*/
protected function _trans_begin()
{
return (bool) pg_query($this->conn_id, 'BEGIN');
}
// --------------------------------------------------------------------
/**
* Commit Transaction
*
* @return bool
*/
protected function _trans_commit()
{
return (bool) pg_query($this->conn_id, 'COMMIT');
}
// --------------------------------------------------------------------
/**
* Rollback Transaction
*
* @return bool
*/
protected function _trans_rollback()
{
return (bool) pg_query($this->conn_id, 'ROLLBACK');
}
// --------------------------------------------------------------------
/**
* Determines if a query is a "write" type.
*
* @param string An SQL query string
* @return bool
*/
public function is_write_type($sql)
{
if (preg_match('#^(INSERT|UPDATE).*RETURNING\s.+(\,\s?.+)*$#is', $sql))
{
return FALSE;
}
return parent::is_write_type($sql);
}
// --------------------------------------------------------------------
/**
* Platform-dependent string escape
*
* @param string
* @return string
*/
protected function _escape_str($str)
{
return pg_escape_string($this->conn_id, $str);
}
// --------------------------------------------------------------------
/**
* "Smart" Escape String
*
* Escapes data based on type
*
* @param string $str
* @return mixed
*/
public function escape($str)
{
if (is_php('5.4.4') && (is_string($str) OR (is_object($str) && method_exists($str, '__toString'))))
{
return pg_escape_literal($this->conn_id, $str);
}
elseif (is_bool($str))
{
return ($str) ? 'TRUE' : 'FALSE';
}
return parent::escape($str);
}
// --------------------------------------------------------------------
/**
* Affected Rows
*
* @return int
*/
public function affected_rows()
{
return pg_affected_rows($this->result_id);
}
// --------------------------------------------------------------------
/**
* Insert ID
*
* @return string
*/
public function insert_id()
{
$v = $this->version();
$table = (func_num_args() > 0) ? func_get_arg(0) : NULL;
$column = (func_num_args() > 1) ? func_get_arg(1) : NULL;
if ($table === NULL && $v >= '8.1')
{
$sql = 'SELECT LASTVAL() AS ins_id';
}
elseif ($table !== NULL)
{
if ($column !== NULL && $v >= '8.0')
{
$sql = 'SELECT pg_get_serial_sequence(\''.$table."', '".$column."') AS seq";
$query = $this->query($sql);
$query = $query->row();
$seq = $query->seq;
}
else
{
// seq_name passed in table parameter
$seq = $table;
}
$sql = 'SELECT CURRVAL(\''.$seq."') AS ins_id";
}
else
{
return pg_last_oid($this->result_id);
}
$query = $this->query($sql);
$query = $query->row();
return (int) $query->ins_id;
}
// --------------------------------------------------------------------
/**
* Show table query
*
* Generates a platform-specific query string so that the table names can be fetched
*
* @param bool $prefix_limit
* @return string
*/
protected function _list_tables($prefix_limit = FALSE)
{
$sql = 'SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = \''.$this->schema."'";
if ($prefix_limit !== FALSE && $this->dbprefix !== '')
{
return $sql.' AND "table_name" LIKE \''
.$this->escape_like_str($this->dbprefix)."%' "
.sprintf($this->_like_escape_str, $this->_like_escape_chr);
}
return $sql;
}
// --------------------------------------------------------------------
/**
* List column query
*
* Generates a platform-specific query string so that the column names can be fetched
*
* @param string $table
* @return string
*/
protected function _list_columns($table = '')
{
return 'SELECT "column_name"
FROM "information_schema"."columns"
WHERE LOWER("table_name") = '.$this->escape(strtolower($table));
}
// --------------------------------------------------------------------
/**
* Returns an object with field data
*
* @param string $table
* @return array
*/
public function field_data($table)
{
$sql = 'SELECT "column_name", "data_type", "character_maximum_length", "numeric_precision", "column_default"
FROM "information_schema"."columns"
WHERE LOWER("table_name") = '.$this->escape(strtolower($table));
if (($query = $this->query($sql)) === FALSE)
{
return FALSE;
}
$query = $query->result_object();
$retval = array();
for ($i = 0, $c = count($query); $i < $c; $i++)
{
$retval[$i] = new stdClass();
$retval[$i]->name = $query[$i]->column_name;
$retval[$i]->type = $query[$i]->data_type;
$retval[$i]->max_length = ($query[$i]->character_maximum_length > 0) ? $query[$i]->character_maximum_length : $query[$i]->numeric_precision;
$retval[$i]->default = $query[$i]->column_default;
}
return $retval;
}
// --------------------------------------------------------------------
/**
* Error
*
* Returns an array containing code and message of the last
* database error that has occurred.
*
* @return array
*/
public function error()
{
return array('code' => '', 'message' => pg_last_error($this->conn_id));
}
// --------------------------------------------------------------------
/**
* ORDER BY
*
* @param string $orderby
* @param string $direction ASC, DESC or RANDOM
* @param bool $escape
* @return object
*/
public function order_by($orderby, $direction = '', $escape = NULL)
{
$direction = strtoupper(trim($direction));
if ($direction === 'RANDOM')
{
if ( ! is_float($orderby) && ctype_digit((string) $orderby))
{
$orderby = ($orderby > 1)
? (float) '0.'.$orderby
: (float) $orderby;
}
if (is_float($orderby))
{
$this->simple_query('SET SEED '.$orderby);
}
$orderby = $this->_random_keyword[0];
$direction = '';
$escape = FALSE;
}
return parent::order_by($orderby, $direction, $escape);
}
// --------------------------------------------------------------------
/**
* Update statement
*
* Generates a platform-specific update string from the supplied data
*
* @param string $table
* @param array $values
* @return string
*/
protected function _update($table, $values)
{
$this->qb_limit = FALSE;
$this->qb_orderby = array();
return parent::_update($table, $values);
}
// --------------------------------------------------------------------
/**
* Update_Batch statement
*
* Generates a platform-specific batch update string from the supplied data
*
* @param string $table Table name
* @param array $values Update data
* @param string $index WHERE key
* @return string
*/
protected function _update_batch($table, $values, $index)
{
$ids = array();
foreach ($values as $key => $val)
{
$ids[] = $val[$index]['value'];
foreach (array_keys($val) as $field)
{
if ($field !== $index)
{
$final[$val[$field]['field']][] = 'WHEN '.$val[$index]['value'].' THEN '.$val[$field]['value'];
}
}
}
$cases = '';
foreach ($final as $k => $v)
{
$cases .= $k.' = (CASE '.$val[$index]['field']."\n"
.implode("\n", $v)."\n"
.'ELSE '.$k.' END), ';
}
$this->where($val[$index]['field'].' IN('.implode(',', $ids).')', NULL, FALSE);
return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
}
// --------------------------------------------------------------------
/**
* Delete statement
*
* Generates a platform-specific delete string from the supplied data
*
* @param string $table
* @return string
*/
protected function _delete($table)
{
$this->qb_limit = FALSE;
return parent::_delete($table);
}
// --------------------------------------------------------------------
/**
* LIMIT
*
* Generates a platform-specific LIMIT clause
*
* @param string $sql SQL Query
* @return string
*/
protected function _limit($sql)
{
return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
}
// --------------------------------------------------------------------
/**
* Close DB Connection
*
* @return void
*/
protected function _close()
{
pg_close($this->conn_id);
}
}
PK ! •Ê2 2 postgre_result.phpnu „[µü¤ num_rows)
? $this->num_rows
: $this->num_rows = pg_num_rows($this->result_id);
}
// --------------------------------------------------------------------
/**
* Number of fields in the result set
*
* @return int
*/
public function num_fields()
{
return pg_num_fields($this->result_id);
}
// --------------------------------------------------------------------
/**
* Fetch Field Names
*
* Generates an array of column names
*
* @return array
*/
public function list_fields()
{
$field_names = array();
for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
{
$field_names[] = pg_field_name($this->result_id, $i);
}
return $field_names;
}
// --------------------------------------------------------------------
/**
* Field data
*
* Generates an array of objects containing field meta-data
*
* @return array
*/
public function field_data()
{
$retval = array();
for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
{
$retval[$i] = new stdClass();
$retval[$i]->name = pg_field_name($this->result_id, $i);
$retval[$i]->type = pg_field_type($this->result_id, $i);
$retval[$i]->max_length = pg_field_size($this->result_id, $i);
}
return $retval;
}
// --------------------------------------------------------------------
/**
* Free the result
*
* @return void
*/
public function free_result()
{
if (is_resource($this->result_id))
{
pg_free_result($this->result_id);
$this->result_id = FALSE;
}
}
// --------------------------------------------------------------------
/**
* Data Seek
*
* Moves the internal pointer to the desired offset. We call
* this internally before fetching results to make sure the
* result set starts at zero.
*
* @param int $n
* @return bool
*/
public function data_seek($n = 0)
{
return pg_result_seek($this->result_id, $n);
}
// --------------------------------------------------------------------
/**
* Result - associative array
*
* Returns the result set as an array
*
* @return array
*/
protected function _fetch_assoc()
{
return pg_fetch_assoc($this->result_id);
}
// --------------------------------------------------------------------
/**
* Result - object
*
* Returns the result set as an object
*
* @param string $class_name
* @return object
*/
protected function _fetch_object($class_name = 'stdClass')
{
return pg_fetch_object($this->result_id, NULL, $class_name);
}
}
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PK ! ÞÜ‚Î Î postgre_utility.phpnu „[µü¤ db->display_error('db_unsupported_feature');
}
}
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