#import <Foundation/Foundation.h>
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#ifndef __has_feature // Optional.
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#define __has_feature(x) 0 // Compatibility with non-clang compilers.
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#endif
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#ifndef NS_RETURNS_NOT_RETAINED
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#if __has_feature(attribute_ns_returns_not_retained)
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#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained))
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#else
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#define NS_RETURNS_NOT_RETAINED
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#endif
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#endif
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@class FMDatabase;
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@class FMStatement;
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/** Represents the results of executing a query on an `<FMDatabase>`.
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### See also
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- `<FMDatabase>`
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*/
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@interface FMResultSet : NSObject {
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FMDatabase *_parentDB;
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FMStatement *_statement;
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NSString *_query;
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NSMutableDictionary *_columnNameToIndexMap;
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}
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///-----------------
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/// @name Properties
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///-----------------
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/** Executed query */
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@property (atomic, retain) NSString *query;
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/** `NSMutableDictionary` mapping column names to numeric index */
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@property (readonly) NSMutableDictionary *columnNameToIndexMap;
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/** `FMStatement` used by result set. */
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@property (atomic, retain) FMStatement *statement;
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///------------------------------------
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/// @name Creating and closing database
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///------------------------------------
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/** Create result set from `<FMStatement>`
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@param statement A `<FMStatement>` to be performed
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@param aDB A `<FMDatabase>` to be used
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@return A `FMResultSet` on success; `nil` on failure
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*/
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+ (instancetype)resultSetWithStatement:(FMStatement *)statement usingParentDatabase:(FMDatabase*)aDB;
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/** Close result set */
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- (void)close;
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- (void)setParentDB:(FMDatabase *)newDb;
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///---------------------------------------
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/// @name Iterating through the result set
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///---------------------------------------
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/** Retrieve next row for result set.
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You must always invoke `next` or `nextWithError` before attempting to access the values returned in a query, even if you're only expecting one.
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@return `YES` if row successfully retrieved; `NO` if end of result set reached
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@see hasAnotherRow
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*/
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- (BOOL)next;
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/** Retrieve next row for result set.
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You must always invoke `next` or `nextWithError` before attempting to access the values returned in a query, even if you're only expecting one.
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@param outErr A 'NSError' object to receive any error object (if any).
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@return 'YES' if row successfully retrieved; 'NO' if end of result set reached
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@see hasAnotherRow
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*/
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- (BOOL)nextWithError:(NSError **)outErr;
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/** Did the last call to `<next>` succeed in retrieving another row?
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@return `YES` if the last call to `<next>` succeeded in retrieving another record; `NO` if not.
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@see next
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@warning The `hasAnotherRow` method must follow a call to `<next>`. If the previous database interaction was something other than a call to `next`, then this method may return `NO`, whether there is another row of data or not.
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*/
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- (BOOL)hasAnotherRow;
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///---------------------------------------------
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/// @name Retrieving information from result set
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///---------------------------------------------
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/** How many columns in result set
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@return Integer value of the number of columns.
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*/
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- (int)columnCount;
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/** Column index for column name
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@param columnName `NSString` value of the name of the column.
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@return Zero-based index for column.
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*/
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- (int)columnIndexForName:(NSString*)columnName;
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/** Column name for column index
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@param columnIdx Zero-based index for column.
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@return columnName `NSString` value of the name of the column.
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*/
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- (NSString*)columnNameForIndex:(int)columnIdx;
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/** Result set integer value for column.
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@param columnName `NSString` value of the name of the column.
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@return `int` value of the result set's column.
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*/
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- (int)intForColumn:(NSString*)columnName;
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/** Result set integer value for column.
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@param columnIdx Zero-based index for column.
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@return `int` value of the result set's column.
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*/
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- (int)intForColumnIndex:(int)columnIdx;
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/** Result set `long` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `long` value of the result set's column.
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*/
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- (long)longForColumn:(NSString*)columnName;
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/** Result set long value for column.
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@param columnIdx Zero-based index for column.
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@return `long` value of the result set's column.
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*/
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- (long)longForColumnIndex:(int)columnIdx;
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/** Result set `long long int` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `long long int` value of the result set's column.
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*/
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- (long long int)longLongIntForColumn:(NSString*)columnName;
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/** Result set `long long int` value for column.
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@param columnIdx Zero-based index for column.
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@return `long long int` value of the result set's column.
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*/
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- (long long int)longLongIntForColumnIndex:(int)columnIdx;
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/** Result set `unsigned long long int` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `unsigned long long int` value of the result set's column.
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*/
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- (unsigned long long int)unsignedLongLongIntForColumn:(NSString*)columnName;
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/** Result set `unsigned long long int` value for column.
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@param columnIdx Zero-based index for column.
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@return `unsigned long long int` value of the result set's column.
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*/
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- (unsigned long long int)unsignedLongLongIntForColumnIndex:(int)columnIdx;
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/** Result set `BOOL` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `BOOL` value of the result set's column.
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*/
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- (BOOL)boolForColumn:(NSString*)columnName;
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/** Result set `BOOL` value for column.
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@param columnIdx Zero-based index for column.
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@return `BOOL` value of the result set's column.
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*/
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- (BOOL)boolForColumnIndex:(int)columnIdx;
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/** Result set `double` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `double` value of the result set's column.
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*/
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- (double)doubleForColumn:(NSString*)columnName;
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/** Result set `double` value for column.
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@param columnIdx Zero-based index for column.
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@return `double` value of the result set's column.
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*/
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- (double)doubleForColumnIndex:(int)columnIdx;
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/** Result set `NSString` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `NSString` value of the result set's column.
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*/
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- (NSString*)stringForColumn:(NSString*)columnName;
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/** Result set `NSString` value for column.
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@param columnIdx Zero-based index for column.
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@return `NSString` value of the result set's column.
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*/
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- (NSString*)stringForColumnIndex:(int)columnIdx;
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/** Result set `NSDate` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `NSDate` value of the result set's column.
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*/
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- (NSDate*)dateForColumn:(NSString*)columnName;
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/** Result set `NSDate` value for column.
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@param columnIdx Zero-based index for column.
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@return `NSDate` value of the result set's column.
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*/
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- (NSDate*)dateForColumnIndex:(int)columnIdx;
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/** Result set `NSData` value for column.
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This is useful when storing binary data in table (such as image or the like).
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@param columnName `NSString` value of the name of the column.
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@return `NSData` value of the result set's column.
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*/
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- (NSData*)dataForColumn:(NSString*)columnName;
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/** Result set `NSData` value for column.
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@param columnIdx Zero-based index for column.
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@return `NSData` value of the result set's column.
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*/
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- (NSData*)dataForColumnIndex:(int)columnIdx;
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/** Result set `(const unsigned char *)` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `(const unsigned char *)` value of the result set's column.
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*/
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- (const unsigned char *)UTF8StringForColumnName:(NSString*)columnName;
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/** Result set `(const unsigned char *)` value for column.
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@param columnIdx Zero-based index for column.
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@return `(const unsigned char *)` value of the result set's column.
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*/
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- (const unsigned char *)UTF8StringForColumnIndex:(int)columnIdx;
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/** Result set object for column.
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@param columnName `NSString` value of the name of the column.
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@return Either `NSNumber`, `NSString`, `NSData`, or `NSNull`. If the column was `NULL`, this returns `[NSNull null]` object.
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@see objectForKeyedSubscript:
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*/
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- (id)objectForColumnName:(NSString*)columnName;
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/** Result set object for column.
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@param columnIdx Zero-based index for column.
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@return Either `NSNumber`, `NSString`, `NSData`, or `NSNull`. If the column was `NULL`, this returns `[NSNull null]` object.
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@see objectAtIndexedSubscript:
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*/
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- (id)objectForColumnIndex:(int)columnIdx;
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/** Result set object for column.
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This method allows the use of the "boxed" syntax supported in Modern Objective-C. For example, by defining this method, the following syntax is now supported:
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id result = rs[@"employee_name"];
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This simplified syntax is equivalent to calling:
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id result = [rs objectForKeyedSubscript:@"employee_name"];
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which is, it turns out, equivalent to calling:
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id result = [rs objectForColumnName:@"employee_name"];
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@param columnName `NSString` value of the name of the column.
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@return Either `NSNumber`, `NSString`, `NSData`, or `NSNull`. If the column was `NULL`, this returns `[NSNull null]` object.
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*/
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- (id)objectForKeyedSubscript:(NSString *)columnName;
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/** Result set object for column.
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This method allows the use of the "boxed" syntax supported in Modern Objective-C. For example, by defining this method, the following syntax is now supported:
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id result = rs[0];
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This simplified syntax is equivalent to calling:
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id result = [rs objectForKeyedSubscript:0];
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which is, it turns out, equivalent to calling:
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id result = [rs objectForColumnName:0];
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@param columnIdx Zero-based index for column.
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@return Either `NSNumber`, `NSString`, `NSData`, or `NSNull`. If the column was `NULL`, this returns `[NSNull null]` object.
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*/
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- (id)objectAtIndexedSubscript:(int)columnIdx;
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/** Result set `NSData` value for column.
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@param columnName `NSString` value of the name of the column.
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@return `NSData` value of the result set's column.
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@warning If you are going to use this data after you iterate over the next row, or after you close the
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result set, make sure to make a copy of the data first (or just use `<dataForColumn:>`/`<dataForColumnIndex:>`)
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If you don't, you're going to be in a world of hurt when you try and use the data.
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*/
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- (NSData*)dataNoCopyForColumn:(NSString*)columnName NS_RETURNS_NOT_RETAINED;
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/** Result set `NSData` value for column.
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@param columnIdx Zero-based index for column.
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@return `NSData` value of the result set's column.
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@warning If you are going to use this data after you iterate over the next row, or after you close the
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result set, make sure to make a copy of the data first (or just use `<dataForColumn:>`/`<dataForColumnIndex:>`)
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If you don't, you're going to be in a world of hurt when you try and use the data.
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*/
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- (NSData*)dataNoCopyForColumnIndex:(int)columnIdx NS_RETURNS_NOT_RETAINED;
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/** Is the column `NULL`?
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@param columnIdx Zero-based index for column.
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@return `YES` if column is `NULL`; `NO` if not `NULL`.
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*/
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- (BOOL)columnIndexIsNull:(int)columnIdx;
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/** Is the column `NULL`?
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@param columnName `NSString` value of the name of the column.
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@return `YES` if column is `NULL`; `NO` if not `NULL`.
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*/
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- (BOOL)columnIsNull:(NSString*)columnName;
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/** Returns a dictionary of the row results mapped to case sensitive keys of the column names.
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@returns `NSDictionary` of the row results.
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@warning The keys to the dictionary are case sensitive of the column names.
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*/
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- (NSDictionary*)resultDictionary;
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/** Returns a dictionary of the row results
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@see resultDictionary
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@warning **Deprecated**: Please use `<resultDictionary>` instead. Also, beware that `<resultDictionary>` is case sensitive!
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*/
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- (NSDictionary*)resultDict __attribute__ ((deprecated));
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///-----------------------------
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/// @name Key value coding magic
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///-----------------------------
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/** Performs `setValue` to yield support for key value observing.
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@param object The object for which the values will be set. This is the key-value-coding compliant object that you might, for example, observe.
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*/
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- (void)kvcMagic:(id)object;
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@end
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