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Refactor: LKDBSearchHelper code refine
1. apply chaining to SQL commands : Select, Delete 2. code clean
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31 changes: 31 additions & 0 deletions
31
Demo-iOS/iOS-Demo/LKDBSearchHelper/Commands/LKDBTransaction.h
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| #import <Foundation/Foundation.h> | ||
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| @class LKDBHelper; | ||
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| /* DB Transcation wrapper */ | ||
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| typedef NS_ENUM(NSUInteger, LKDBSQLAction) { | ||
| LKDBSQLActionInsert = 0, | ||
| LKDBSQLActionUpdate = 1, | ||
| LKDBSQLActionDelete = 2, | ||
| }; | ||
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| @protocol LKDBTransactionData <NSObject> | ||
| @property (nonatomic,assign) LKDBSQLAction action; | ||
| @end | ||
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| @interface LKDBTransaction : NSObject | ||
| + (instancetype)newTransaction; | ||
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| - (void)batchUpdate:(NSArray <LKDBTransactionData> *)dataArr; | ||
| - (void)batchInsert:(NSArray <LKDBTransactionData> *)dataArr; | ||
| - (void)batchDelete:(NSArray <LKDBTransactionData> *)dataArr; | ||
| - (void)update:(id <LKDBTransactionData>)object; | ||
| - (void)insert:(id <LKDBTransactionData>)object; | ||
| - (void)delete:(id <LKDBTransactionData>)object; | ||
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| - (void)executeToDB:(LKDBHelper *)dbHelper; | ||
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| @end |
82 changes: 82 additions & 0 deletions
82
Demo-iOS/iOS-Demo/LKDBSearchHelper/Commands/LKDBTransaction.m
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| #import "LKDBTransaction.h" | ||
| #import <LKDBHelper.h> | ||
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| @interface LKDBTransaction() { | ||
| NSMutableArray *_actionDataArr; | ||
| } | ||
| @end | ||
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| @implementation LKDBTransaction | ||
| + (instancetype)newTransaction { | ||
| return [self new]; | ||
| } | ||
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| - (instancetype)init | ||
| { | ||
| if (self = [super init]) { | ||
| _actionDataArr = [NSMutableArray array]; | ||
| } | ||
| return self; | ||
| } | ||
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| // MARK:- DB ops | ||
| - (void)batchUpdate:(NSArray <LKDBTransactionData> *)dataArr{ | ||
| [dataArr enumerateObjectsUsingBlock:^(id <LKDBTransactionData> _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { | ||
| obj.action = LKDBSQLActionUpdate; | ||
| [_actionDataArr addObject:obj]; | ||
| }]; | ||
| } | ||
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| - (void)batchInsert:(NSArray <LKDBTransactionData> *)dataArr{ | ||
| [dataArr enumerateObjectsUsingBlock:^(id <LKDBTransactionData> _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { | ||
| obj.action = LKDBSQLActionInsert; | ||
| [_actionDataArr addObject:obj]; | ||
| }]; | ||
| } | ||
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| - (void)batchDelete:(NSArray <LKDBTransactionData> *)dataArr{ | ||
| [dataArr enumerateObjectsUsingBlock:^(id <LKDBTransactionData> _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { | ||
| obj.action = LKDBSQLActionDelete; | ||
| [_actionDataArr addObject:obj]; | ||
| }];} | ||
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| - (void)update:(id <LKDBTransactionData>)object{ | ||
| object.action = LKDBSQLActionUpdate; | ||
| [_actionDataArr addObject:object]; | ||
| } | ||
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| - (void)insert:(id <LKDBTransactionData>)object{ | ||
| object.action = LKDBSQLActionInsert; | ||
| [_actionDataArr addObject:object]; | ||
| } | ||
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| - (void)delete:(id <LKDBTransactionData>)object{ | ||
| object.action = LKDBSQLActionDelete; | ||
| [_actionDataArr addObject:object]; | ||
| } | ||
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| // MARK:- excute | ||
| - (void)executeToDB:(LKDBHelper *)dbHelper{ | ||
| [dbHelper executeForTransaction:^BOOL(LKDBHelper *helper) { | ||
| @try { | ||
| for (NSObject <LKDBTransactionData> * object in _actionDataArr) { | ||
| if(object.action == LKDBSQLActionInsert) | ||
| [object saveToDB]; | ||
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| if(object.action == LKDBSQLActionUpdate) | ||
| [object updateToDB]; | ||
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| if(object.action == LKDBSQLActionDelete) | ||
| [object deleteToDB]; | ||
| } | ||
| return YES; | ||
| } @catch (NSException *exception) { | ||
| return NO; | ||
| } | ||
| }]; | ||
| } | ||
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| @end |
41 changes: 41 additions & 0 deletions
41
Demo-iOS/iOS-Demo/LKDBSearchHelper/Commands/LKSQLCommand.h
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| // | ||
| // LKSQLCommand.h | ||
| // iOS-Demo | ||
| // | ||
| // Copyright © 2019年 Mars. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
| @class LKSQLCondition, LKDBHelper; | ||
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| /* CRUD Base Class */ | ||
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| @interface LKSQLCommand : NSObject | ||
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| + (instancetype)clause; | ||
| - (LKSQLCommand *(^)(Class tblClass))from; | ||
| - (LKSQLCommand *(^)(LKSQLCondition *sqlCondition))where; | ||
| - (LKSQLCommand *(^)(NSArray *orderByList))orderBy; | ||
| - (LKSQLCommand *(^)(NSArray *groupByList))groupBy; | ||
| - (LKSQLCommand *(^)(NSInteger limit))limit; | ||
| - (LKSQLCommand *(^)(NSInteger offset))offset; | ||
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| /* SQL translate */ | ||
| - ( NSString *)toString; // @abstract | ||
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| /* LKDB wrapper */ | ||
| - (id (^)())exec; // @abstract | ||
| - (id (^)(LKDBHelper *))execIn; // @abstract | ||
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| /* accessor for Subclasses */ | ||
| @property (nonatomic, readonly, assign) NSInteger mLimit; | ||
| @property (nonatomic, readonly, assign) NSInteger mOffset; | ||
| @property (nonatomic, readonly, assign) BOOL countOnly; | ||
| @property (nonatomic, readonly, strong) Class tblClass; | ||
| @property (nonatomic, readonly, strong) LKSQLCondition* conditionGroup; | ||
| @property (nonatomic, readonly, copy) NSArray* orderByList; | ||
| @property (nonatomic, readonly, copy) NSArray* groupByList; | ||
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| @end |
75 changes: 75 additions & 0 deletions
75
Demo-iOS/iOS-Demo/LKDBSearchHelper/Commands/LKSQLCommand.m
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| @@ -0,0 +1,75 @@ | ||
| // | ||
| // LKSQLCommand.m | ||
| // iOS-Demo | ||
| // | ||
| // Copyright © 2019年 Mars. All rights reserved. | ||
| // | ||
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| #import "LKSQLCommand.h" | ||
| @interface LKSQLCommand () | ||
| @property (nonatomic, assign) NSInteger mLimit; | ||
| @property (nonatomic, assign) NSInteger mOffset; | ||
| @property (nonatomic, assign) BOOL countOnly; | ||
| @property (nonatomic, strong) Class tblClass; | ||
| @property (nonatomic, strong) LKSQLCondition* conditionGroup; | ||
| @property (nonatomic, copy) NSArray* orderByList; | ||
| @property (nonatomic, copy) NSArray* groupByList; | ||
| @end | ||
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| @implementation LKSQLCommand | ||
| // MARK:- DB cretieria | ||
| + (instancetype)clause { return [self new]; } | ||
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| - (LKSQLCommand *(^)(Class tblClass))from | ||
| { | ||
| return ^id(Class tblCls) { | ||
| self.tblClass = tblCls; | ||
| return self; | ||
| }; | ||
| } | ||
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| - (LKSQLCommand *(^)(LKSQLCondition *sqlCondition))where | ||
| { | ||
| return ^id(LKSQLCondition* sqlCond) { | ||
| self.conditionGroup = sqlCond; | ||
| return self; | ||
| }; | ||
| } | ||
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| - (LKSQLCommand *(^)(NSArray *orderByList))orderBy | ||
| { | ||
| return ^id(NSArray *orderByList) { | ||
| self.orderByList = orderByList; | ||
| return self; | ||
| }; | ||
| } | ||
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| - (LKSQLCommand *(^)(NSArray *groupByList))groupBy | ||
| { | ||
| return ^id(NSArray *groupByList) { | ||
| self.groupByList = groupByList; | ||
| return self; | ||
| }; | ||
| } | ||
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| - (LKSQLCommand *(^)(NSInteger offset))offset | ||
| { | ||
| return ^id(NSInteger offset) { | ||
| self.mOffset = offset; | ||
| return self; | ||
| }; | ||
| } | ||
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| - (LKSQLCommand *(^)(NSInteger limit))limit | ||
| { | ||
| return ^id(NSInteger limit) { | ||
| self.mLimit = limit; | ||
| return self; | ||
| }; | ||
| } | ||
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| - ( NSString *)toString { /* @abstract */ return nil;} | ||
| - (id (^)())exec { /* @abstract */ return nil;} | ||
| - (id (^)(LKDBHelper *))execIn { /* @abstract */ return nil;} | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,11 @@ | ||
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| #import "LKSQLCommand.h" | ||
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| #define _SQLDelete LKSQLDelete.clause | ||
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| /* `Delete` Statement */ | ||
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| @interface LKSQLDelete : LKSQLCommand | ||
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| @end |
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