165 lines
3.7 KiB
PHP
165 lines
3.7 KiB
PHP
<?php
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/**
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* OpenSQLManager
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*
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* Free Database manager for Open Source Databases
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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/OpenSQLManager
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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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* Convienience class for creating sql queries - also the class that
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* instantiates the specific db driver
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*/
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class Query_Builder {
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private $table, $where_array, $sql;
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/**
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* Constructor
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*
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* @param object $conn_name - the name of the connection/parameters
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*/
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public function __construct($params)
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{
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$params->type = strtolower($params->type);
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$dbtype = ($params->type !== 'postgresql') ? $params->type : 'pgsql';
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// Initiate the constructor for the selected database
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switch($dbtype)
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{
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default:
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$this->db = new $dbtype("host={$params->host};port={$params->port};", $params->user, $params->pass);
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break;
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case "sqlite":
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if ( ! empty($params->user) && ! empty($params->pass))
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{
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$this->db = new $dbtype($params->file, $params->user, $params->pass);
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}
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else
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{
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$this->db = new $dbtype($params->file);
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}
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break;
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case "firebird":
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$this->db = new $dbtype("{$params->host}:{$params->file}", $params->user, $params->pass);
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break;
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}
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// Make things just slightly shorter
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$this->sql =& $this->db->sql;
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}
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// --------------------------------------------------------------------------
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/**
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* Select and retrieve all records from the current table, and/or
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* execute current compiled query
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*
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* @param $table
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* @param int $limit
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* @param int $offset
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* @return object
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*/
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public function get($table='', $limit=FALSE, $offset=FALSE)
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{
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// @todo Only add in the table name when using the select method
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// @todo Only execute combined query when using other query methods and empty parameters
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$sql = 'SELECT * FROM ' . $this->db->quote_ident($table);
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if ( ! empty($table) && $limit === FALSE && $offset === FALSE)
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{
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$result = $this->db->query($sql);
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}
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else
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{
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$sql = $this->sql->limit($sql, $limit, $offset);
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$result = $this->db->query($sql);
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}
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//echo $sql."<br />";
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return $result;
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}
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// --------------------------------------------------------------------------
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/**
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* Specifies rows to select in a query
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*
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* @param string $fields
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* @return $this
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*/
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public function select($fields)
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{
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// @todo Implement select method
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Specify condition(s) in the where clause of a query
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* Note: this function works with key / value, or a
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* passed array with key / value pairs
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*
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* @param mixed $key
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* @param mixed $val
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* @return $this
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*/
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public function where($key, $val=array())
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{
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// @todo Implement where method
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Creates a join phrase in a compiled query
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*
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* @param string $table
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* @param string $condition
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* @param string $type
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* @return $this
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*/
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public function join($table, $condition, $type='inner')
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{
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// @todo Implement join method
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Specify the database table to select from
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*
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* @param string $dbname
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* @return $this
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*/
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public function from($dbname)
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{
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// @todo Implement from method
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* String together the sql statements for sending to the db
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*
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* @return $string
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*/
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private function _compile()
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{
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// @todo Implement _compile method
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}
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} |