mirror of
https://github.com/vrana/adminer.git
synced 2025-12-28 19:31:04 +01:00
283 lines
7.8 KiB
PHP
283 lines
7.8 KiB
PHP
<?php
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namespace Adminer;
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$drivers = array();
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/** Add a driver
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* @param string
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* @param string
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* @return void
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*/
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function add_driver($id, $name) {
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global $drivers;
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$drivers[$id] = $name;
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}
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/** Get driver name
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* @param string
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* @return string
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*/
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function get_driver($id) {
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global $drivers;
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return $drivers[$id];
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}
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abstract class SqlDriver {
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/** @var list<string> */ static $possibleDrivers = array();
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/** @var string */ static $jush; // JUSH identifier
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/** @var Db */ protected $conn;
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/** @var int[][] */ protected $types = array(); // [$group => [$type => $maximum_unsigned_length, ...], ...]
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/** @var array{0?:string[], 1?:string[]} */ public $editFunctions = array(); // of ["$type|$type2" => "$function/$function2"] functions used in editing, [0] - edit and insert, [1] - edit only
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/** @var list<string> */ public $unsigned = array(); // number variants
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/** @var list<string> */ public $operators = array(); // operators used in select
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/** @var list<string> */ public $functions = array(); // functions used in select
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/** @var list<string> */ public $grouping = array(); // grouping functions used in select
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/** @var string */ public $onActions = "RESTRICT|NO ACTION|CASCADE|SET NULL|SET DEFAULT"; // used in foreign_keys()
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/** @var string */ public $inout = "IN|OUT|INOUT"; // used in routines
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/** @var string */ public $enumLength = "'(?:''|[^'\\\\]|\\\\.)*'"; // regular expression for parsing enum lengths
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/** @var list<string> */ public $generated = array(); // allowed types of generated columns
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/** Create object for performing database operations
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* @param Db
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*/
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function __construct($connection) {
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$this->conn = $connection;
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}
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/** Get all types
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* @return int[] [$type => $maximum_unsigned_length, ...]
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*/
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function types() {
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return call_user_func_array('array_merge', array_values($this->types));
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}
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/** Get structured types
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* @return list<string>[]|list<string> [$description => [$type, ...], ...]
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*/
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function structuredTypes() {
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return array_map('array_keys', $this->types);
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}
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/** Get enum values
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* @param Field
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* @return string|void
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*/
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function enumLength($field) {
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}
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/** Function used to convert the value inputted by user
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* @param Field
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* @return string|void
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*/
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function unconvertFunction($field) {
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}
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/** Select data from table
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* @param string
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* @param list<string> result of $adminer->selectColumnsProcess()[0]
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* @param list<string> result of $adminer->selectSearchProcess()
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* @param list<string> result of $adminer->selectColumnsProcess()[1]
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* @param list<string> result of $adminer->selectOrderProcess()
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* @param int|numeric-string result of $adminer->selectLimitProcess()
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* @param int index of page starting at zero
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* @param bool whether to print the query
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* @return Result|false
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*/
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function select($table, $select, $where, $group, $order = array(), $limit = 1, $page = 0, $print = false) {
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global $adminer;
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$is_group = (count($group) < count($select));
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$query = $adminer->selectQueryBuild($select, $where, $group, $order, $limit, $page);
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if (!$query) {
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$query = "SELECT" . limit(
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($_GET["page"] != "last" && $limit != "" && $group && $is_group && JUSH == "sql" ? "SQL_CALC_FOUND_ROWS " : "") . implode(", ", $select) . "\nFROM " . table($table),
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($where ? "\nWHERE " . implode(" AND ", $where) : "") . ($group && $is_group ? "\nGROUP BY " . implode(", ", $group) : "") . ($order ? "\nORDER BY " . implode(", ", $order) : ""),
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($limit != "" ? +$limit : null),
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($page ? $limit * $page : 0),
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"\n"
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);
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}
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$start = microtime(true);
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$return = $this->conn->query($query);
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if ($print) {
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echo $adminer->selectQuery($query, $start, !$return);
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}
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return $return;
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}
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/** Delete data from table
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* @param string
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* @param string " WHERE ..."
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* @param int 0 or 1
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* @return Result|bool
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*/
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function delete($table, $queryWhere, $limit = 0) {
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$query = "FROM " . table($table);
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return queries("DELETE" . ($limit ? limit1($table, $query, $queryWhere) : " $query$queryWhere"));
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}
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/** Update data in table
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* @param string
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* @param string[] escaped columns in keys, quoted data in values
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* @param string " WHERE ..."
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* @param int 0 or 1
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* @param string
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* @return Result|bool
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*/
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function update($table, $set, $queryWhere, $limit = 0, $separator = "\n") {
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$values = array();
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foreach ($set as $key => $val) {
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$values[] = "$key = $val";
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}
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$query = table($table) . " SET$separator" . implode(",$separator", $values);
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return queries("UPDATE" . ($limit ? limit1($table, $query, $queryWhere, $separator) : " $query$queryWhere"));
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}
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/** Insert data into table
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* @param string
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* @param string[] escaped columns in keys, quoted data in values
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* @return Result|bool
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*/
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function insert($table, $set) {
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return queries("INSERT INTO " . table($table) . ($set
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? " (" . implode(", ", array_keys($set)) . ")\nVALUES (" . implode(", ", $set) . ")"
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: " DEFAULT VALUES"
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) . $this->insertReturning($table));
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}
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/** Get RETURNING clause for INSERT queries (PostgreSQL specific)
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* @param string
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* @return string
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*/
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function insertReturning($table) {
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return "";
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}
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/** Insert or update data in table
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* @param string
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* @param list<string[]> of arrays with escaped columns in keys and quoted data in values
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* @param int[] column names in keys
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* @return Result|bool
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*/
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function insertUpdate($table, $rows, $primary) {
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return false;
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}
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/** Begin transaction
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* @return Result|bool
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*/
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function begin() {
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return queries("BEGIN");
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}
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/** Commit transaction
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* @return Result|bool
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*/
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function commit() {
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return queries("COMMIT");
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}
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/** Rollback transaction
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* @return Result|bool
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*/
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function rollback() {
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return queries("ROLLBACK");
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}
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/** Return query with a timeout
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* @param string
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* @param int seconds
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* @return string|void null if the driver doesn't support query timeouts
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*/
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function slowQuery($query, $timeout) {
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}
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/** Convert column to be searchable
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* @param string escaped column name
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* @param array{op:string, val:string}
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* @param Field
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* @return string
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*/
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function convertSearch($idf, $val, $field) {
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return $idf;
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}
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/** Convert operator so it can be used in search
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* @param string $operator
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* @return string
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*/
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function convertOperator($operator) {
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return $operator;
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}
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/** Convert value returned by database to actual value
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* @param string
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* @param Field
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* @return string
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*/
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function value($val, $field) {
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return (method_exists($this->conn, 'value')
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? $this->conn->value($val, $field)
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: (is_resource($val) ? stream_get_contents($val) : $val)
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);
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}
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/** Quote binary string
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* @param string
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* @return string
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*/
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function quoteBinary($s) {
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return q($s);
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}
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/** Get warnings about the last command
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* @return string|void HTML
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*/
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function warnings() {
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}
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/** Get help link for table
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* @param string
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* @param bool
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* @return string|void relative URL
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*/
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function tableHelp($name, $is_view = false) {
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}
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/** Check if C-style escapes are supported
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* @return bool
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*/
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function hasCStyleEscapes() {
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return false;
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}
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/** Get supported engines
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* @return list<string>
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*/
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function engines() {
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return array();
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}
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/** Check whether table supports indexes
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* @param TableStatus result of table_status1()
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* @return bool
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*/
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function supportsIndex($table_status) {
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return !is_view($table_status);
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}
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/** Get defined check constraints
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* @param string
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* @return string[] [$name => $clause]
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*/
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function checkConstraints($table) {
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// MariaDB contains CHECK_CONSTRAINTS.TABLE_NAME, MySQL and PostrgreSQL not
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return get_key_vals("SELECT c.CONSTRAINT_NAME, CHECK_CLAUSE
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FROM INFORMATION_SCHEMA.CHECK_CONSTRAINTS c
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JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS t ON c.CONSTRAINT_SCHEMA = t.CONSTRAINT_SCHEMA AND c.CONSTRAINT_NAME = t.CONSTRAINT_NAME
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WHERE c.CONSTRAINT_SCHEMA = " . q($_GET["ns"] != "" ? $_GET["ns"] : DB) . "
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AND t.TABLE_NAME = " . q($table) . "
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AND CHECK_CLAUSE NOT LIKE '% IS NOT NULL'"); // ignore default IS NOT NULL checks in PostrgreSQL
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}
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}
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