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<?php | |
/** | |
* | |
* This file is part of the phpBB Forum Software package. | |
* | |
* @copyright (c) phpBB Limited <https://www.phpbb.com> | |
* @license GNU General Public License, version 2 (GPL-2.0) | |
* | |
* For full copyright and license information, please see | |
* the docs/CREDITS.txt file. | |
* | |
*/ | |
namespace phpbb\db\driver; | |
interface driver_interface | |
{ | |
/** | |
* Set value for load_time debug parameter | |
* | |
* @param bool $value | |
*/ | |
public function set_debug_load_time($value); | |
/** | |
* Set value for sql_explain debug parameter | |
* | |
* @param bool $value | |
*/ | |
public function set_debug_sql_explain($value); | |
/** | |
* Gets the name of the sql layer. | |
* | |
* @return string | |
*/ | |
public function get_sql_layer(); | |
/** | |
* Gets the name of the database. | |
* | |
* @return string | |
*/ | |
public function get_db_name(); | |
/** | |
* Wildcards for matching any (%) character within LIKE expressions | |
* | |
* @return string | |
*/ | |
public function get_any_char(); | |
/** | |
* Wildcards for matching exactly one (_) character within LIKE expressions | |
* | |
* @return string | |
*/ | |
public function get_one_char(); | |
/** | |
* Gets the time spent into the queries | |
* | |
* @return int | |
*/ | |
public function get_sql_time(); | |
/** | |
* Gets the connect ID. | |
* | |
* @return mixed | |
*/ | |
public function get_db_connect_id(); | |
/** | |
* Indicates if an error was triggered. | |
* | |
* @return bool | |
*/ | |
public function get_sql_error_triggered(); | |
/** | |
* Gets the last faulty query | |
* | |
* @return string | |
*/ | |
public function get_sql_error_sql(); | |
/** | |
* Indicates if we are in a transaction. | |
* | |
* @return bool | |
*/ | |
public function get_transaction(); | |
/** | |
* Gets the returned error. | |
* | |
* @return array | |
*/ | |
public function get_sql_error_returned(); | |
/** | |
* Indicates if multiple insertion can be used | |
* | |
* @return bool | |
*/ | |
public function get_multi_insert(); | |
/** | |
* Set if multiple insertion can be used | |
* | |
* @param bool $multi_insert | |
*/ | |
public function set_multi_insert($multi_insert); | |
/** | |
* Gets the exact number of rows in a specified table. | |
* | |
* @param string $table_name Table name | |
* @return string Exact number of rows in $table_name. | |
*/ | |
public function get_row_count($table_name); | |
/** | |
* Gets the estimated number of rows in a specified table. | |
* | |
* @param string $table_name Table name | |
* @return string Number of rows in $table_name. | |
* Prefixed with ~ if estimated (otherwise exact). | |
*/ | |
public function get_estimated_row_count($table_name); | |
/** | |
* Run LOWER() on DB column of type text (i.e. neither varchar nor char). | |
* | |
* @param string $column_name The column name to use | |
* @return string A SQL statement like "LOWER($column_name)" | |
*/ | |
public function sql_lower_text($column_name); | |
/** | |
* Display sql error page | |
* | |
* @param string $sql The SQL query causing the error | |
* @return mixed Returns the full error message, if $this->return_on_error | |
* is set, null otherwise | |
*/ | |
public function sql_error($sql = ''); | |
/** | |
* Returns whether results of a query need to be buffered to run a | |
* transaction while iterating over them. | |
* | |
* @return bool Whether buffering is required. | |
*/ | |
public function sql_buffer_nested_transactions(); | |
/** | |
* Run binary OR operator on DB column. | |
* | |
* @param string $column_name The column name to use | |
* @param int $bit The value to use for the OR operator, | |
* will be converted to (1 << $bit). Is used by options, | |
* using the number schema... 0, 1, 2...29 | |
* @param string $compare Any custom SQL code after the check (e.g. "= 0") | |
* @return string A SQL statement like "$column | (1 << $bit) {$compare}" | |
*/ | |
public function sql_bit_or($column_name, $bit, $compare = ''); | |
/** | |
* Version information about used database | |
* | |
* @param bool $raw Only return the fetched sql_server_version | |
* @param bool $use_cache Is it safe to retrieve the value from the cache | |
* @return string sql server version | |
*/ | |
public function sql_server_info($raw = false, $use_cache = true); | |
/** | |
* Return on error or display error message | |
* | |
* @param bool $fail Should we return on errors, or stop | |
* @return null | |
*/ | |
public function sql_return_on_error($fail = false); | |
/** | |
* Build sql statement from an array | |
* | |
* @param string $query Should be on of the following strings: | |
* INSERT, INSERT_SELECT, UPDATE, SELECT, DELETE | |
* @param array $assoc_ary Array with "column => value" pairs | |
* @return string A SQL statement like "c1 = 'a' AND c2 = 'b'" | |
*/ | |
public function sql_build_array($query, $assoc_ary = array()); | |
/** | |
* Fetch all rows | |
* | |
* @param mixed $query_id Already executed query to get the rows from, | |
* if false, the last query will be used. | |
* @return mixed Nested array if the query had rows, false otherwise | |
*/ | |
public function sql_fetchrowset($query_id = false); | |
/** | |
* SQL Transaction | |
* | |
* @param string $status Should be one of the following strings: | |
* begin, commit, rollback | |
* @return mixed Buffered, seekable result handle, false on error | |
*/ | |
public function sql_transaction($status = 'begin'); | |
/** | |
* Build a concatenated expression | |
* | |
* @param string $expr1 Base SQL expression where we append the second one | |
* @param string $expr2 SQL expression that is appended to the first expression | |
* @return string Concatenated string | |
*/ | |
public function sql_concatenate($expr1, $expr2); | |
/** | |
* Build a case expression | |
* | |
* Note: The two statements action_true and action_false must have the same | |
* data type (int, vchar, ...) in the database! | |
* | |
* @param string $condition The condition which must be true, | |
* to use action_true rather then action_else | |
* @param string $action_true SQL expression that is used, if the condition is true | |
* @param mixed $action_false SQL expression that is used, if the condition is false | |
* @return string CASE expression including the condition and statements | |
*/ | |
public function sql_case($condition, $action_true, $action_false = false); | |
/** | |
* Build sql statement from array for select and select distinct statements | |
* | |
* Possible query values: SELECT, SELECT_DISTINCT | |
* | |
* @param string $query Should be one of: SELECT, SELECT_DISTINCT | |
* @param array $array Array with the query data: | |
* SELECT A comma imploded list of columns to select | |
* FROM Array with "table => alias" pairs, | |
* (alias can also be an array) | |
* Optional: LEFT_JOIN Array of join entries: | |
* FROM Table that should be joined | |
* ON Condition for the join | |
* Optional: WHERE Where SQL statement | |
* Optional: GROUP_BY Group by SQL statement | |
* Optional: ORDER_BY Order by SQL statement | |
* @return string A SQL statement ready for execution | |
*/ | |
public function sql_build_query($query, $array); | |
/** | |
* Fetch field | |
* if rownum is false, the current row is used, else it is pointing to the row (zero-based) | |
* | |
* @param string $field Name of the column | |
* @param mixed $rownum Row number, if false the current row will be used | |
* and the row curser will point to the next row | |
* Note: $rownum is 0 based | |
* @param mixed $query_id Already executed query to get the rows from, | |
* if false, the last query will be used. | |
* @return mixed String value of the field in the selected row, | |
* false, if the row does not exist | |
*/ | |
public function sql_fetchfield($field, $rownum = false, $query_id = false); | |
/** | |
* Fetch current row | |
* | |
* @param mixed $query_id Already executed query to get the rows from, | |
* if false, the last query will be used. | |
* @return mixed Array with the current row, | |
* false, if the row does not exist | |
*/ | |
public function sql_fetchrow($query_id = false); | |
/** | |
* Returns SQL string to cast a string expression to an int. | |
* | |
* @param string $expression An expression evaluating to string | |
* @return string Expression returning an int | |
*/ | |
public function cast_expr_to_bigint($expression); | |
/** | |
* Gets the ID of the **last** inserted row immediately after an INSERT | |
* statement. | |
* | |
* **Note**: Despite the name, the returned ID refers to the row that has | |
* just been inserted, rather than the hypothetical ID of the next row if a | |
* new one was to be inserted. | |
* | |
* The returned value can be used for selecting the item that has just been | |
* inserted or for updating another table with an ID pointing to that item. | |
* | |
* Alias of `sql_last_inserted_id`. | |
* | |
* @deprecated 3.3.11-RC1 Replaced by sql_last_inserted_id(), to be removed in 4.1.0-a1 | |
* | |
* @return string|false Auto-incremented value of the last inserted row | |
*/ | |
public function sql_nextid(); | |
/** | |
* Gets the ID of the last inserted row immediately after an INSERT | |
* statement. The returned value can be used for selecting the item that has | |
* just been inserted or for updating another table with an ID pointing to | |
* that item. | |
* | |
* @return string|false Auto-incremented value of the last inserted row | |
*/ | |
public function sql_last_inserted_id(); | |
/** | |
* Add to query count | |
* | |
* @param bool $cached Is this query cached? | |
* @return null | |
*/ | |
public function sql_add_num_queries($cached = false); | |
/** | |
* Build LIMIT query | |
* | |
* @param string $query The SQL query to execute | |
* @param int $total The number of rows to select | |
* @param int $offset | |
* @param int $cache_ttl Either 0 to avoid caching or | |
* the time in seconds which the result shall be kept in cache | |
* @return mixed Buffered, seekable result handle, false on error | |
*/ | |
public function sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0); | |
/** | |
* Base query method | |
* | |
* @param string $query The SQL query to execute | |
* @param int $cache_ttl Either 0 to avoid caching or | |
* the time in seconds which the result shall be kept in cache | |
* @return mixed Buffered, seekable result handle, false on error | |
*/ | |
public function sql_query($query = '', $cache_ttl = 0); | |
/** | |
* Returns SQL string to cast an integer expression to a string. | |
* | |
* @param string $expression An expression evaluating to int | |
* @return string Expression returning a string | |
*/ | |
public function cast_expr_to_string($expression); | |
/** | |
* Connect to server | |
* | |
* @param string $sqlserver Address of the database server | |
* @param string $sqluser User name of the SQL user | |
* @param string $sqlpassword Password of the SQL user | |
* @param string $database Name of the database | |
* @param mixed $port Port of the database server | |
* @param bool $persistency | |
* @param bool $new_link Should a new connection be established | |
* @return mixed Connection ID on success, string error message otherwise | |
*/ | |
public function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false); | |
/** | |
* Run binary AND operator on DB column. | |
* Results in sql statement: "{$column_name} & (1 << {$bit}) {$compare}" | |
* | |
* @param string $column_name The column name to use | |
* @param int $bit The value to use for the AND operator, | |
* will be converted to (1 << $bit). Is used by | |
* options, using the number schema: 0, 1, 2...29 | |
* @param string $compare Any custom SQL code after the check (for example "= 0") | |
* @return string A SQL statement like: "{$column} & (1 << {$bit}) {$compare}" | |
*/ | |
public function sql_bit_and($column_name, $bit, $compare = ''); | |
/** | |
* Free sql result | |
* | |
* @param mixed $query_id Already executed query result, | |
* if false, the last query will be used. | |
* @return null | |
*/ | |
public function sql_freeresult($query_id = false); | |
/** | |
* Return number of sql queries and cached sql queries used | |
* | |
* @param bool $cached Should we return the number of cached or normal queries? | |
* @return int Number of queries that have been executed | |
*/ | |
public function sql_num_queries($cached = false); | |
/** | |
* Run more than one insert statement. | |
* | |
* @param string $table Table name to run the statements on | |
* @param array $sql_ary Multi-dimensional array holding the statement data | |
* @return bool false if no statements were executed. | |
*/ | |
public function sql_multi_insert($table, $sql_ary); | |
/** | |
* Return number of affected rows | |
* | |
* @return mixed Number of the affected rows by the last query | |
* false if no query has been run before | |
*/ | |
public function sql_affectedrows(); | |
/** | |
* DBAL garbage collection, close SQL connection | |
* | |
* @return mixed False if no connection was opened before, | |
* Server response otherwise | |
*/ | |
public function sql_close(); | |
/** | |
* Seek to given row number | |
* | |
* @param mixed $rownum Row number the curser should point to | |
* Note: $rownum is 0 based | |
* @param mixed $query_id ID of the query to set the row cursor on | |
* if false, the last query will be used. | |
* $query_id will then be set correctly | |
* @return bool False if something went wrong | |
*/ | |
public function sql_rowseek($rownum, &$query_id); | |
/** | |
* Escape string used in sql query | |
* | |
* @param string $msg String to be escaped | |
* @return string Escaped version of $msg | |
*/ | |
public function sql_escape($msg); | |
/** | |
* Correctly adjust LIKE expression for special characters | |
* Some DBMS are handling them in a different way | |
* | |
* @param string $expression The expression to use. Every wildcard is | |
* escaped, except $this->any_char and $this->one_char | |
* @return string A SQL statement like: "LIKE 'bertie_%'" | |
*/ | |
public function sql_like_expression($expression); | |
/** | |
* Correctly adjust NOT LIKE expression for special characters | |
* Some DBMS are handling them in a different way | |
* | |
* @param string $expression The expression to use. Every wildcard is | |
* escaped, except $this->any_char and $this->one_char | |
* @return string A SQL statement like: "NOT LIKE 'bertie_%'" | |
*/ | |
public function sql_not_like_expression($expression); | |
/** | |
* Explain queries | |
* | |
* @param string $mode Available modes: display, start, stop, | |
* add_select_row, fromcache, record_fromcache | |
* @param string $query The Query that should be explained | |
* @return mixed Either a full HTML page, boolean or null | |
*/ | |
public function sql_report($mode, $query = ''); | |
/** | |
* Build IN or NOT IN sql comparison string, uses <> or = on single element | |
* arrays to improve comparison speed | |
* | |
* @param string $field Name of the sql column that shall be compared | |
* @param array $array Array of values that are (not) allowed | |
* @param bool $negate true for NOT IN (), false for IN () | |
* @param bool $allow_empty_set If true, allow $array to be empty, | |
* this function will return 1=1 or 1=0 then. | |
* @return string A SQL statement like: "IN (1, 2, 3, 4)" or "= 1" | |
*/ | |
public function sql_in_set($field, $array, $negate = false, $allow_empty_set = false); | |
/** | |
* Quote identifiers used in sql query | |
* | |
* @param string $msg String to be quoted | |
* @return string Quoted version of $msg | |
*/ | |
public function sql_quote($msg); | |
/** | |
* Ensure query ID can be used by cache | |
* | |
* @param resource|int|string $query_id Mixed type query id | |
* | |
* @return int|string Query id in string or integer format | |
*/ | |
public function clean_query_id($query_id); | |
} |