#import "MDDSort.h"

#import "MDDTableInfo.h"

#import "MDDColumn.h"

#import "MDDDescription.h"

@implementation MDDSort

+ (instancetype)sortWithTableInfo:(MDDTableInfo *)tableInfo property:(id<MDDItem>)property ascending:(BOOL)ascending;{

MDDSort *sort = [super descriptorWithTableInfo:tableInfo property:property value:nil];

sort->_ascending = ascending;

return sort;

}

- (NSString *)description{

return [[self dictionaryWithValuesForKeys:@[@"property", @"ascending"]] description];

}

- (MDDDescription *)SQLDescription{

MDDColumn *column = [self.tableInfo columnForProperty:[self property]];

NSParameterAssert(column);

NSString *SQL = [NSString stringWithFormat:@"%@ %@", [column name], [self ascending] ? @"ASC" : @"DESC"];

return [MDDDescription descriptionWithSQL:SQL values:nil];

}

+ (MDDDescription *)descriptionWithSorts:(NSArray<MDDSort *> *)sorts{

return [super descriptionWithDescriptors:sorts separator:@" , "];

}