diff options
author | stuconnolly <stuart02@gmail.com> | 2012-02-25 18:38:21 +0000 |
---|---|---|
committer | stuconnolly <stuart02@gmail.com> | 2012-02-25 18:38:21 +0000 |
commit | 92022eb14512d1e6aa17c6bb956f83d7b3f7e579 (patch) | |
tree | 8b8c403e6493cb515bb0ba60c4d6a5dfea92474e /Frameworks/QueryKit/QKQuery.m | |
parent | 700d4e71f39e7e10f6838543f8f9f2fda81a8eba (diff) | |
download | sequelpro-92022eb14512d1e6aa17c6bb956f83d7b3f7e579.tar.gz sequelpro-92022eb14512d1e6aa17c6bb956f83d7b3f7e579.tar.bz2 sequelpro-92022eb14512d1e6aa17c6bb956f83d7b3f7e579.zip |
Move QueryKit to it's own project.
Diffstat (limited to 'Frameworks/QueryKit/QKQuery.m')
-rw-r--r-- | Frameworks/QueryKit/QKQuery.m | 438 |
1 files changed, 0 insertions, 438 deletions
diff --git a/Frameworks/QueryKit/QKQuery.m b/Frameworks/QueryKit/QKQuery.m deleted file mode 100644 index 31755b6d..00000000 --- a/Frameworks/QueryKit/QKQuery.m +++ /dev/null @@ -1,438 +0,0 @@ -// -// $Id$ -// -// QKQuery.h -// sequel-pro -// -// Created by Stuart Connolly (stuconnolly.com) on September 4, 2011 -// Copyright (c) 2011 Stuart Connolly. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person -// obtaining a copy of this software and associated documentation -// files (the "Software"), to deal in the Software without -// restriction, including without limitation the rights to use, -// copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the -// Software is furnished to do so, subject to the following -// conditions: -// -// The above copyright notice and this permission notice shall be -// included in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES -// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT -// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, -// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING -// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR -// OTHER DEALINGS IN THE SOFTWARE. -// -// More info at <http://code.google.com/p/sequel-pro/> - -#import "QKQuery.h" - -static NSString *QKNoQueryTypeException = @"QKNoQueryType"; -static NSString *QKNoQueryTableException = @"QKNoQueryTable"; - -@interface QKQuery () - -- (void)_validateRequiements; - -- (NSString *)_buildQuery; -- (NSString *)_buildFieldList; -- (NSString *)_buildConstraints; -- (NSString *)_buildGroupByClause; -- (NSString *)_buildOrderByClause; - -- (BOOL)_addString:(NSString *)string toArray:(NSMutableArray *)array; - -@end - -@implementation QKQuery - -@synthesize _database; -@synthesize _table; -@synthesize _parameters; -@synthesize _queryType; -@synthesize _fields; -@synthesize _quoteFields; - -#pragma mark - -#pragma mark Initialization - -+ (QKQuery *)queryTable:(NSString *)table -{ - return [[[QKQuery alloc] initWithTable:table] autorelease]; -} - -+ (QKQuery *)selectQueryFromTable:(NSString *)table -{ - QKQuery *query = [[[QKQuery alloc] initWithTable:table] autorelease]; - - [query setQueryType:QKSelectQuery]; - - return query; -} - -- (id)initWithTable:(NSString *)table -{ - if ((self = [super init])) { - [self setTable:table]; - [self setFields:[[NSMutableArray alloc] init]]; - [self setParameters:[[NSMutableArray alloc] init]]; - [self setQueryType:-1]; - [self setQuoteFields:NO]; - - _orderDescending = NO; - - _groupByFields = [[NSMutableArray alloc] init]; - _orderByFields = [[NSMutableArray alloc] init]; - - _query = [[NSMutableString alloc] init]; - } - - return self; -} - -#pragma mark - -#pragma mark Public API - -- (NSString *)query -{ - return _query ? [self _buildQuery] : @""; -} - -#pragma mark - -#pragma mark Fields - -/** - * Shortcut for adding a new field to this query. - */ -- (void)addField:(NSString *)field -{ - [self _addString:field toArray:_fields]; -} - -/** - * Convenience method for adding more than one field. - * - * @param The array (of strings) of fields to add. - */ -- (void)addFields:(NSArray *)fields -{ - for (NSString *field in fields) - { - [self addField:field]; - } -} - -#pragma mark - -#pragma mark Parameters - -/** - * Adds the supplied parameter. - * - * @param parameter The parameter to add. - */ -- (void)addParameter:(QKQueryParameter *)parameter -{ - if ([parameter field] && ([[parameter field] length] > 0) && ((NSInteger)[parameter operator] > -1) && [parameter value]) { - [_parameters addObject:parameter]; - } -} - -/** - * Convenience method for adding a new parameter. - */ -- (void)addParameter:(NSString *)field operator:(QKQueryOperator)operator value:(id)value -{ - [self addParameter:[QKQueryParameter queryParamWithField:field operator:operator value:value]]; -} - -#pragma mark - -#pragma mark Grouping - -/** - * Adds the supplied field to the query's GROUP BY clause. - */ -- (void)groupByField:(NSString *)field -{ - [self _addString:field toArray:_groupByFields]; -} - -/** - * Convenience method for adding more than one field to the query's GROUP BY clause. - */ -- (void)groupByFields:(NSArray *)fields -{ - for (NSString *field in fields) - { - [self groupByField:field]; - } -} - -#pragma mark - -#pragma mark Ordering - -/** - * Adds the supplied field to the query's ORDER BY clause. - */ -- (void)orderByField:(NSString *)field descending:(BOOL)descending -{ - _orderDescending = descending; - - [self _addString:field toArray:_orderByFields]; -} - -/** - * Convenience method for adding more than one field to the query's ORDER BY clause. - */ -- (void)orderByFields:(NSArray *)fields descending:(BOOL)descending -{ - for (NSString *field in fields) - { - [self orderByField:field descending:descending]; - } -} - -#pragma mark - -#pragma mark Private API - -/** - * Validates that everything necessary to build the query has been set. - */ -- (void)_validateRequiements -{ - if (_queryType == -1) { - [NSException raise:QKNoQueryTypeException format:@"Attempt to build query with no query type specified."]; - } - - if (!_table || [_table length] == 0) { - [NSException raise:QKNoQueryTableException format:@"Attempt to build query with no query table specified."]; - } -} - -/** - * Builds the actual query. - */ -- (NSString *)_buildQuery -{ - [self _validateRequiements]; - - BOOL isSelect = (_queryType == QKSelectQuery); - BOOL isInsert = (_queryType == QKInsertQuery); - BOOL isUpdate = (_queryType == QKUpdateQuery); - BOOL isDelete = (_queryType == QKDeleteQuery); - - NSString *fields = [self _buildFieldList]; - - if (isSelect) { - [_query appendFormat:@"SELECT %@ FROM ", fields]; - } - else if (isInsert) { - [_query appendString:@"INSERT INTO "]; - } - else if (isUpdate) { - [_query appendString:@"UPDATE "]; - } - else if (isDelete) { - [_query appendString:@"DELETE FROM "]; - } - - if (_database && [_database length] > 0) { - [_query appendFormat:@"%@.", _database]; - } - - [_query appendString:_table]; - - if ([_parameters count] > 0) { - [_query appendString:@" WHERE "]; - [_query appendString:[self _buildConstraints]]; - } - - if (isSelect) { - NSString *groupBy = [self _buildGroupByClause]; - NSString *orderBy = [self _buildOrderByClause]; - - if ([groupBy length] > 0) { - [_query appendFormat:@" %@", groupBy]; - } - - if ([orderBy length] > 0) { - [_query appendFormat:@" %@", orderBy]; - } - } - - return _query; -} - -/** - * Builds the string representation of the query's field list. - */ -- (NSString *)_buildFieldList -{ - NSMutableString *fields = [NSMutableString string]; - - if ([_fields count] == 0) { - [fields appendString:@"*"]; - - return fields; - } - - for (NSString *field in _fields) - { - field = [field stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; - - if ([field length] == 0) continue; - - if (_quoteFields) { - [fields appendString:@"`"]; - } - - [fields appendString:field]; - - if (_quoteFields) { - [fields appendString:@"`"]; - } - - [fields appendString:@", "]; - } - - if ([fields hasSuffix:@", "]) { - [fields setString:[fields substringToIndex:([fields length] - 2)]]; - } - - return fields; -} - -/** - * Builds the string representation of the query's constraints. - */ -- (NSString *)_buildConstraints -{ - NSMutableString *constraints = [NSMutableString string]; - - if ([_parameters count] == 0) return constraints; - - for (QKQueryParameter *param in _parameters) - { - [constraints appendFormat:@"%@ ", param]; - - [constraints appendString:@" AND "]; - } - - if ([constraints hasSuffix:@" AND "]) { - [constraints setString:[constraints substringToIndex:([constraints length] - 5)]]; - } - - return constraints; -} - -/** - * Builds the string representation of the query's GROUP BY clause. - * - * @return The GROUP BY clause - */ -- (NSString *)_buildGroupByClause -{ - NSMutableString *groupBy = [NSMutableString string]; - - if ([_groupByFields count] == 0) return groupBy; - - [groupBy appendString:@"GROUP BY "]; - - for (NSString *field in _groupByFields) - { - [groupBy appendString:field]; - [groupBy appendString:@", "]; - } - - if ([groupBy hasSuffix:@", "]) { - [groupBy setString:[groupBy substringToIndex:([groupBy length] - 2)]]; - } - - return groupBy; -} - -/** - * Builds the string representation of the query's ORDER BY clause. - * - * @return The ORDER BY clause - */ -- (NSString *)_buildOrderByClause -{ - NSMutableString *orderBy = [NSMutableString string]; - - if ([_orderByFields count] == 0) return orderBy; - - [orderBy appendString:@"ORDER BY "]; - - for (NSString *field in _orderByFields) - { - [orderBy appendString:field]; - [orderBy appendString:@", "]; - } - - if ([orderBy hasSuffix:@", "]) { - [orderBy setString:[orderBy substringToIndex:([orderBy length] - 2)]]; - } - - if (_orderDescending) { - [orderBy appendString:@" DESC"]; - } - - return orderBy; -} - -/** - * Adds the supplied string to the supplied array, but only if the length is greater than zero. - * - * @param string The string to add to the array - * @param array The array to add the string to - * - * @return A BOOL indicating whether or not the string was added. - */ -- (BOOL)_addString:(NSString *)string toArray:(NSMutableArray *)array -{ - BOOL result = NO; - - if (!string || !array) return result; - - string = [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; - - if ([string length] > 0) { - [array addObject:string]; - - result = YES; - } - - return result; -} - -#pragma mark - - -/** - * Same as calling -query. - */ -- (NSString *)description -{ - return [self query]; -} - -#pragma mark - - -- (void)dealloc -{ - if (_table) [_table release], _table = nil; - if (_database) [_database release], _database = nil; - if (_query) [_query release], _query = nil; - if (_parameters) [_parameters release], _parameters = nil; - if (_fields) [_fields release], _fields = nil; - if (_groupByFields) [_groupByFields release], _groupByFields = nil; - if (_orderByFields) [_orderByFields release], _orderByFields = nil; - - [super dealloc]; -} - -@end |