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//
// FMDatabaseAdditions.h
// fmdb
//
// Created by August Mueller on 10/30/05.
// Copyright 2005 Flying Meat Inc.. All rights reserved.
//
#import <Foundation/Foundation.h>
#import "FMDatabase.h"
NS_ASSUME_NONNULL_BEGIN
/** Category of additions for `<FMDatabase>` class.
### See also
- `<FMDatabase>`
*/
@interface FMDatabase (FMDatabaseAdditions)
///----------------------------------------
/// @name Return results of SQL to variable
///----------------------------------------
/** Return `int` value for query
@param query The SQL query to be performed.
@param ... A list of parameters that will be bound to the `?` placeholders in the SQL query.
@return `int` value.
@note This is not available from Swift.
*/
- (int)intForQuery:(NSString*)query, ...;
/** Return `long` value for query
@param query The SQL query to be performed.
@param ... A list of parameters that will be bound to the `?` placeholders in the SQL query.
@return `long` value.
@note This is not available from Swift.
*/
- (long)longForQuery:(NSString*)query, ...;
/** Return `BOOL` value for query
@param query The SQL query to be performed.
@param ... A list of parameters that will be bound to the `?` placeholders in the SQL query.
@return `BOOL` value.
@note This is not available from Swift.
*/
- (BOOL)boolForQuery:(NSString*)query, ...;
/** Return `double` value for query
@param query The SQL query to be performed.
@param ... A list of parameters that will be bound to the `?` placeholders in the SQL query.
@return `double` value.
@note This is not available from Swift.
*/
- (double)doubleForQuery:(NSString*)query, ...;
/** Return `NSString` value for query
@param query The SQL query to be performed.
@param ... A list of parameters that will be bound to the `?` placeholders in the SQL query.
@return `NSString` value.
@note This is not available from Swift.
*/
- (NSString * _Nullable)stringForQuery:(NSString*)query, ...;
/** Return `NSData` value for query
@param query The SQL query to be performed.
@param ... A list of parameters that will be bound to the `?` placeholders in the SQL query.
@return `NSData` value.
@note This is not available from Swift.
*/
- (NSData * _Nullable)dataForQuery:(NSString*)query, ...;
/** Return `NSDate` value for query
@param query The SQL query to be performed.
@param ... A list of parameters that will be bound to the `?` placeholders in the SQL query.
@return `NSDate` value.
@note This is not available from Swift.
*/
- (NSDate * _Nullable)dateForQuery:(NSString*)query, ...;
// Notice that there's no dataNoCopyForQuery:.
// That would be a bad idea, because we close out the result set, and then what
// happens to the data that we just didn't copy? Who knows, not I.
///--------------------------------
/// @name Schema related operations
///--------------------------------
/** Does table exist in database?
@param tableName The name of the table being looked for.
@return `YES` if table found; `NO` if not found.
*/
- (BOOL)tableExists:(NSString*)tableName;
/** The schema of the database.
This will be the schema for the entire database. For each entity, each row of the result set will include the following fields:
- `type` - The type of entity (e.g. table, index, view, or trigger)
- `name` - The name of the object
- `tbl_name` - The name of the table to which the object references
- `rootpage` - The page number of the root b-tree page for tables and indices
- `sql` - The SQL that created the entity
@return `FMResultSet` of schema; `nil` on error.
@see [SQLite File Format](http://www.sqlite.org/fileformat.html)
*/
- (FMResultSet * _Nullable)getSchema;
/** The schema of the database.
This will be the schema for a particular table as report by SQLite `PRAGMA`, for example:
PRAGMA table_info('employees')
This will report:
- `cid` - The column ID number
- `name` - The name of the column
- `type` - The data type specified for the column
- `notnull` - whether the field is defined as NOT NULL (i.e. values required)
- `dflt_value` - The default value for the column
- `pk` - Whether the field is part of the primary key of the table
@param tableName The name of the table for whom the schema will be returned.
@return `FMResultSet` of schema; `nil` on error.
@see [table_info](http://www.sqlite.org/pragma.html#pragma_table_info)
*/
- (FMResultSet * _Nullable)getTableSchema:(NSString*)tableName;
/** Test to see if particular column exists for particular table in database
@param columnName The name of the column.
@param tableName The name of the table.
@return `YES` if column exists in table in question; `NO` otherwise.
*/
- (BOOL)columnExists:(NSString*)columnName inTableWithName:(NSString*)tableName;
/** Test to see if particular column exists for particular table in database
@param columnName The name of the column.
@param tableName The name of the table.
@return `YES` if column exists in table in question; `NO` otherwise.
@see columnExists:inTableWithName:
@warning Deprecated - use `<columnExists:inTableWithName:>` instead.
*/
- (BOOL)columnExists:(NSString*)tableName columnName:(NSString*)columnName __deprecated_msg("Use columnExists:inTableWithName: instead");
/** Validate SQL statement
This validates SQL statement by performing `sqlite3_prepare_v2`, but not returning the results, but instead immediately calling `sqlite3_finalize`.
@param sql The SQL statement being validated.
@param error This is a pointer to a `NSError` object that will receive the autoreleased `NSError` object if there was any error. If this is `nil`, no `NSError` result will be returned.
@return `YES` if validation succeeded without incident; `NO` otherwise.
*/
- (BOOL)validateSQL:(NSString*)sql error:(NSError * _Nullable __autoreleasing *)error;
///-----------------------------------
/// @name Application identifier tasks
///-----------------------------------
/** Retrieve application ID
@return The `uint32_t` numeric value of the application ID.
@see setApplicationID:
*/
@property (nonatomic) uint32_t applicationID;
#if TARGET_OS_MAC && !TARGET_OS_IPHONE
/** Retrieve application ID string
@see setApplicationIDString:
*/
@property (nonatomic, retain) NSString *applicationIDString;
#endif
///-----------------------------------
/// @name user version identifier tasks
///-----------------------------------
/** Retrieve user version
@see setUserVersion:
*/
@property (nonatomic) uint32_t userVersion;
@end
NS_ASSUME_NONNULL_END
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