Query/classes/query_builder_interface.php

491 lines
12 KiB
PHP

<?php
/**
* Query
*
* Free Query Builder / Database Abstraction Layer
*
* @package Query
* @author Timothy J. Warren
* @copyright Copyright (c) 2012 - 2014
* @link https://github.com/aviat4ion/Query
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* Interface defining the Query Builder class
*
* @package Query
* @subpackage Query
*/
interface Query_Builder_Interface {
// --------------------------------------------------------------------------
// ! Select Queries
// --------------------------------------------------------------------------
/**
* Specifies rows to select in a query
*
* @param string $fields
* @return $this
*/
public function select($fields);
// --------------------------------------------------------------------------
/**
* Selects the maximum value of a field from a query
*
* @param string $field
* @param string $as
* @return $this
*/
public function select_max($field, $as=FALSE);
// --------------------------------------------------------------------------
/**
* Selects the minimum value of a field from a query
*
* @param string $field
* @param string $as
* @return $this
*/
public function select_min($field, $as=FALSE);
// --------------------------------------------------------------------------
/**
* Selects the average value of a field from a query
*
* @param string $field
* @param string $as
* @return $this
*/
public function select_avg($field, $as=FALSE);
// --------------------------------------------------------------------------
/**
* Selects the sum of a field from a query
*
* @param string $field
* @param string $as
* @return $this
*/
public function select_sum($field, $as=FALSE);
// --------------------------------------------------------------------------
/**
* Adds the 'distinct' keyword to a query
*
* @return $this
*/
public function distinct();
// --------------------------------------------------------------------------
/**
* Shows the query plan for the query
*
* @return $this
*/
public function explain();
// --------------------------------------------------------------------------
/**
* Specify the database table to select from
*
* @param string $tblname
* @return $this
*/
public function from($tblname);
// --------------------------------------------------------------------------
// ! 'Like' methods
// --------------------------------------------------------------------------
/**
* Creates a Like clause in the sql statement
*
* @param string $field
* @param mixed $val
* @param string $pos
* @return $this
*/
public function like($field, $val, $pos='both');
// --------------------------------------------------------------------------
/**
* Generates an OR Like clause
*
* @param string $field
* @param mixed $val
* @param string $pos
* @return $this
*/
public function or_like($field, $val, $pos='both');
// --------------------------------------------------------------------------
/**
* Generates a NOT LIKE clause
*
* @param string $field
* @param mixed $val
* @param string $pos
* @return $this
*/
public function not_like($field, $val, $pos='both');
// --------------------------------------------------------------------------
/**
* Generates a OR NOT LIKE clause
*
* @param string $field
* @param mixed $val
* @param string $pos
* @return $this
*/
public function or_not_like($field, $val, $pos='both');
// --------------------------------------------------------------------------
// ! Having methods
// --------------------------------------------------------------------------
/**
* Generates a 'Having' clause
*
* @param mixed $key
* @param mixed $val
* @return $this
*/
public function having($key, $val=array());
// --------------------------------------------------------------------------
/**
* Generates a 'Having' clause prefixed with 'OR'
*
* @param mixed $key
* @param mixed $val
* @return $this
*/
public function or_having($key, $val=array());
// --------------------------------------------------------------------------
// ! 'Where' methods
// --------------------------------------------------------------------------
/**
* Specify condition(s) in the where clause of a query
* Note: this function works with key / value, or a
* passed array with key / value pairs
*
* @param mixed $key
* @param mixed $val
* @param bool $escape
* @return $this
*/
public function where($key, $val=array(), $escape = NULL);
// --------------------------------------------------------------------------
/**
* Where clause prefixed with "OR"
*
* @param string $key
* @param mixed $val
* @return $this
*/
public function or_where($key, $val=array());
// --------------------------------------------------------------------------
/**
* Where clause with 'IN' statement
*
* @param mixed $field
* @param mixed $val
* @return $this
*/
public function where_in($field, $val=array());
// --------------------------------------------------------------------------
/**
* Where in statement prefixed with "or"
*
* @param string $field
* @param mixed $val
* @return $this
*/
public function or_where_in($field, $val=array());
// --------------------------------------------------------------------------
/**
* WHERE NOT IN (FOO) clause
*
* @param string $field
* @param mixed $val
* @return $this
*/
public function where_not_in($field, $val=array());
// --------------------------------------------------------------------------
/**
* OR WHERE NOT IN (FOO) clause
*
* @param string $field
* @param mixed $val
* @return $this
*/
public function or_where_not_in($field, $val=array());
// --------------------------------------------------------------------------
// ! Other Query Modifier methods
// --------------------------------------------------------------------------
/**
* Sets values for inserts / updates / deletes
*
* @param mixed $key
* @param mixed $val
* @return $this
*/
public function set($key, $val = NULL);
// --------------------------------------------------------------------------
/**
* Creates a join phrase in a compiled query
*
* @param string $table
* @param string $condition
* @param string $type
* @return $this
*/
public function join($table, $condition, $type='');
// --------------------------------------------------------------------------
/**
* Group the results by the selected field(s)
*
* @param mixed $field
* @return $this
*/
public function group_by($field);
// --------------------------------------------------------------------------
/**
* Order the results by the selected field(s)
*
* @param string $field
* @param string $type
* @return $this
*/
public function order_by($field, $type="");
// --------------------------------------------------------------------------
/**
* Set a limit on the current sql statement
*
* @param int $limit
* @param int $offset
* @return string
*/
public function limit($limit, $offset=FALSE);
// --------------------------------------------------------------------------
// ! Query Grouping Methods
// --------------------------------------------------------------------------
/**
* Adds a paren to the current query for query grouping
*
* @return $this
*/
public function group_start();
// --------------------------------------------------------------------------
/**
* Adds a paren to the current query for query grouping,
* prefixed with 'OR'
*
* @return $this
*/
public function or_group_start();
// --------------------------------------------------------------------------
/**
* Adds a paren to the current query for query grouping,
* prefixed with 'OR NOT'
*
* @return $this
*/
public function or_not_group_start();
// --------------------------------------------------------------------------
/**
* Ends a query group
*
* @return $this
*/
public function group_end();
// --------------------------------------------------------------------------
// ! Query execution methods
// --------------------------------------------------------------------------
/**
* Select and retrieve all records from the current table, and/or
* execute current compiled query
*
* @param $table
* @param int $limit
* @param int $offset
* @return object
*/
public function get($table='', $limit=FALSE, $offset=FALSE);
// --------------------------------------------------------------------------
/**
* Convience method for get() with a where clause
*
* @param string $table
* @param array $where
* @param int $limit
* @param int $offset
* @return object
*/
public function get_where($table, $where=array(), $limit=FALSE, $offset=FALSE);
// --------------------------------------------------------------------------
/**
* Retreive the number of rows in the selected table
*
* @param string $table
* @return int
*/
public function count_all($table);
// --------------------------------------------------------------------------
/**
* Retrieve the number of results for the generated query - used
* in place of the get() method
*
* @param string $table
* @return int
*/
public function count_all_results($table='');
// --------------------------------------------------------------------------
/**
* Creates an insert clause, and executes it
*
* @param string $table
* @param mixed $data
* @return mixed
*/
public function insert($table, $data=array());
// --------------------------------------------------------------------------
/**
* Creates an update clause, and executes it
*
* @param string $table
* @param mixed $data
* @return mixed
*/
public function update($table, $data=array());
// --------------------------------------------------------------------------
/**
* Deletes data from a table
*
* @param string $table
* @param mixed $where
* @return mixed
*/
public function delete($table, $where='');
// --------------------------------------------------------------------------
// ! SQL Returning Methods
// --------------------------------------------------------------------------
/**
* Returns the generated 'select' sql query
*
* @param string $table
* @param bool $reset
* @return string
*/
public function get_compiled_select($table='', $reset=TRUE);
// --------------------------------------------------------------------------
/**
* Returns the generated 'insert' sql query
*
* @param string $table
* @param bool $reset
* @return string
*/
public function get_compiled_insert($table, $reset=TRUE);
// --------------------------------------------------------------------------
/**
* Returns the generated 'update' sql query
*
* @param string $table
* @param bool $reset
* @return string
*/
public function get_compiled_update($table='', $reset=TRUE);
// --------------------------------------------------------------------------
/**
* Returns the generated 'delete' sql query
*
* @param string $table
* @param bool $reset
* @return string
*/
public function get_compiled_delete($table="", $reset=TRUE);
// --------------------------------------------------------------------------
// ! Miscellaneous Methods
// --------------------------------------------------------------------------
/**
* Clear out the class variables, so the next query can be run
*
* @return void
*/
public function reset_query();
}
// End of query_builder_interface.php