515 lines
10 KiB
PHP
515 lines
10 KiB
PHP
<?php
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/**
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* Query
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*
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* Free Query Builder / Database Abstraction Layer
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*
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* @author Timothy J. Warren
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* @copyright Copyright (c) 2012
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* @link https://github.com/aviat4ion/Query
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* @license http://philsturgeon.co.uk/code/dbad-license
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*/
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// --------------------------------------------------------------------------
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/**
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* Firebird Database class
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*
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* PDO-firebird isn't stable, so this is a wrapper of the fbird_ public functions.
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*/
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class firebird extends DB_PDO {
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protected $statement, $statement_link, $trans, $count, $result, $conn;
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/**
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* Open the link to the database
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*
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* @param string $db
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* @param string $user
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* @param string $pass
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*/
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public function __construct($dbpath, $user='sysdba', $pass='masterkey')
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{
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$this->conn = @fbird_connect($dbpath, $user, $pass, 'utf-8');
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// Throw an exception to make this match other pdo classes
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if ( ! is_resource($this->conn))
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{
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throw new PDOException(fbird_errmsg());
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die();
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}
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$class = __CLASS__."_sql";
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$this->sql = new $class;
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}
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// --------------------------------------------------------------------------
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/**
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* Close the link to the database
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*/
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public function __destruct()
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{
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@fbird_close();
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@fbird_free_result($this->statement);
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}
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// --------------------------------------------------------------------------
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/**
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* Empty a database table
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*
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* @param string $table
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*/
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public function truncate($table)
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{
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// Firebird lacka a truncate command
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$sql = 'DELETE FROM "'.$table.'"';
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$this->statement = $this->query($sql);
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}
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// --------------------------------------------------------------------------
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/**
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* Wrapper public function to better match PDO
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*
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* @param string $sql
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* @param array $params
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* @return $this
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*/
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public function query($sql)
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{
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$this->count = 0;
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if (isset($this->trans))
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{
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$this->statement_link = @fbird_query($this->trans, $sql);
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}
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else
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{
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$this->statement_link = @fbird_query($this->conn, $sql);
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}
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// Throw the error as a exception
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if ($this->statement_link === FALSE)
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{
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throw new PDOException(fbird_errmsg());
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}
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return new FireBird_Result($this->statement_link);
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}
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// --------------------------------------------------------------------------
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/**
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* Emulate PDO prepare
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*
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* @param string $query
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* @return $this
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*/
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public function prepare($query, $options=NULL)
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{
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$this->statement_link = @fbird_prepare($this->conn, $query);
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// Throw the error as an exception
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if ($this->statement_link === FALSE)
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{
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throw new PDOException(fbird_errmsg());
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}
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return new FireBird_Result($this->statement_link);
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}
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// --------------------------------------------------------------------------
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/**
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* List tables for the current database
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*
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* @return array
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*/
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public function get_tables()
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{
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$sql = <<<SQL
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SELECT "RDB\$RELATION_NAME" FROM "RDB\$RELATIONS"
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WHERE "RDB\$RELATION_NAME" NOT LIKE 'RDB$%'
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AND "RDB\$RELATION_NAME" NOT LIKE 'MON$%'
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SQL;
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$this->statement = $this->query($sql);
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$tables = array();
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while($row = $this->statement->fetch(PDO::FETCH_ASSOC))
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{
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$tables[] = $row['RDB$RELATION_NAME'];
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}
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return $tables;
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}
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// --------------------------------------------------------------------------
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/**
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* List system tables for the current database
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*
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* @return array
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*/
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public function get_system_tables()
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{
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$sql = <<<SQL
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SELECT "RDB\$RELATION_NAME" FROM "RDB\$RELATIONS"
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WHERE "RDB\$RELATION_NAME" LIKE 'RDB$%'
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OR "RDB\$RELATION_NAME" LIKE 'MON$%';
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SQL;
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$this->statement = $this->query($sql);
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$tables = array();
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while($row = $this->statement->fetch(PDO::FETCH_ASSOC))
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{
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$tables[] = $row['RDB$RELATION_NAME'];
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}
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return $tables;
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}
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// --------------------------------------------------------------------------
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/**
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* Return the number of rows returned for a SELECT query
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*
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* @return int
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*/
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public function num_rows()
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{
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// @todo: Redo this similar to the codeigniter driver
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if(isset($this->result))
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{
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return count($this->result);
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}
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//Fetch all the rows for the result
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$this->result = $this->statement->fetchAll();
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return count($this->result);
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}
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// --------------------------------------------------------------------------
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/**
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* Start a database transaction
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*
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* @return bool
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*/
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public function beginTransaction()
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{
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if(($this->trans = fbird_trans($this->conn)) !== NULL)
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{
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return TRUE;
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}
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return FALSE;
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}
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// --------------------------------------------------------------------------
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/**
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* Commit a database transaction
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*
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* @return bool
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*/
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public function commit()
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{
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return fbird_commit($this->trans);
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}
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// --------------------------------------------------------------------------
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/**
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* Rollback a transaction
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*
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* @return bool
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*/
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public function rollBack()
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{
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return fbird_rollback($this->trans);
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}
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// --------------------------------------------------------------------------
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/**
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* Prepare and execute a query
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*
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* @param string $sql
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* @param array $args
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* @return resource
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*/
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public function prepare_execute($sql, $args)
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{
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$query = $this->prepare($sql);
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// Set the statement in the class variable for easy later access
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$this->statement =& $query;
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return $query->execute($args);
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}
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// --------------------------------------------------------------------------
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/**
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* Method to emulate PDO->quote
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*
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* @param string $str
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* @return string
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*/
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public function quote($str, $param_type=NULL)
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{
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if(is_numeric($str))
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{
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return $str;
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}
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return "'".str_replace("'", "''", $str)."'";
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}
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// --------------------------------------------------------------------------
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/**
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* Method to emulate PDO->errorInfo / PDOStatement->errorInfo
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*
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* @return array
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*/
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public function errorInfo()
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{
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$code = fbird_errcode();
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$msg = fbird_errmsg();
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return array(0, $code, $msg);
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}
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// --------------------------------------------------------------------------
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/**
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* Bind a prepared query with arguments for executing
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*
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* @param string $sql
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* @param mixed $args
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* @return FALSE
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*/
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public function prepare_query($sql, $args)
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{
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// You can't bind query statements before execution with
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// the firebird database
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return FALSE;
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}
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// --------------------------------------------------------------------------
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/**
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* Create an SQL backup file for the current database's structure
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*
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* @return string
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*/
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public function backup_structure()
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{
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// @todo Implement Backup function
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return '';
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}
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// --------------------------------------------------------------------------
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/**
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* Create an SQL backup file for the current database's data
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*
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* @param array $exclude
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* @param bool $system_tables
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* @return string
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*/
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public function backup_data($exclude=array(), $system_tables=FALSE)
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{
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// Determine which tables to use
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if($system_tables == TRUE)
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{
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$tables = array_merge($this->get_system_tables(), $this->get_tables());
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}
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else
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{
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$tables = $this->get_tables();
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}
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// Filter out the tables you don't want
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if( ! empty($exclude))
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{
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$tables = array_diff($tables, $exclude);
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}
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$output_sql = '';
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// Get the data for each object
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foreach($tables as $t)
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{
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$sql = 'SELECT * FROM "'.trim($t).'"';
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$res = $this->query($sql);
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$obj_res = $this->fetchAll(PDO::FETCH_ASSOC);
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unset($res);
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// Nab the column names by getting the keys of the first row
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$columns = @array_keys($obj_res[0]);
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$insert_rows = array();
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// Create the insert statements
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foreach($obj_res as $row)
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{
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$row = array_values($row);
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// Quote values as needed by type
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if(stripos($t, 'RDB$') === FALSE)
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{
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$row = array_map(array(&$this, 'quote'), $row);
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$row = array_map('trim', $row);
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}
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$row_string = 'INSERT INTO "'.trim($t).'" ("'.implode('","', $columns).'") VALUES ('.implode(',', $row).');';
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unset($row);
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$insert_rows[] = $row_string;
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}
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unset($obj_res);
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$output_sql .= "\n\nSET TRANSACTION;\n".implode("\n", $insert_rows)."\nCOMMIT;";
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}
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return $output_sql;
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}
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}
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// --------------------------------------------------------------------------
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/**
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* Firebird result class to emulate PDOStatement Class
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*/
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class Firebird_Result {
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private $statement;
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/**
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* Create the object by passing the resource for
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* the query
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*
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* @param resource $link
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*/
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public function __construct($link)
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{
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$this->statement = $link;
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}
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// --------------------------------------------------------------------------
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/**
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* Emulate PDO fetch public function
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*
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* @param int $fetch_style
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* @return mixed
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*/
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public function fetch($fetch_style=PDO::FETCH_ASSOC, $statement=NULL)
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{
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if ( ! is_null($statement))
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{
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$this->statement = $statement;
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}
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switch($fetch_style)
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{
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case PDO::FETCH_OBJ:
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return fbird_fetch_object($this->statement, IBASE_FETCH_BLOBS);
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break;
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case PDO::FETCH_NUM:
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return fbird_fetch_row($this->statement, IBASE_FETCH_BLOBS);
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break;
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default:
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return fbird_fetch_assoc($this->statement, IBASE_FETCH_BLOBS);
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break;
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}
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}
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// --------------------------------------------------------------------------
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/**
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* Emulate PDO fetchAll public function
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*
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* @param int $fetch_style
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* @return mixed
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*/
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public function fetchAll($fetch_style=PDO::FETCH_ASSOC, $statement=NULL)
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{
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$all = array();
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while($row = $this->fetch($fetch_style, $statement))
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{
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$all[] = $row;
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}
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$this->result = $all;
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return $all;
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}
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// --------------------------------------------------------------------------
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/**
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* Run a prepared statement query
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*
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* @param array $args
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* @return bool
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*/
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public function execute($args)
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{
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//Add the prepared statement as the first parameter
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array_unshift($args, $this->statement);
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// Let php do all the hard stuff in converting
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// the array of arguments into a list of arguments
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$this->__construct(call_user_func_array('fbird_execute', $args));
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Return the number of rows affected by the previous query
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*
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* @return int
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*/
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public function rowCount($statement="")
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{
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return fbird_affected_rows();
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}
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// --------------------------------------------------------------------------
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/**
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* Method to emulate PDO->errorInfo / PDOStatement->errorInfo
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*
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* @return array
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*/
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public function errorInfo()
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{
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$code = fbird_errcode();
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$msg = fbird_errmsg();
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return array(0, $code, $msg);
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}
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}
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// End of firebird-fbird.php
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