add transaction example

Author: li6185377

LKDBHelper/Helper/LKDBHelper.h

@@ -20,9 +20,9 @@
 
 #ifdef DEBUG
     #ifdef NSLog
-        #define LKLog(fmt, ...) NSLog(@"#LKDBHelper ERROR:\n" fmt,##__VA_ARGS__);
+        #define LKLog(fmt, ...) NSLog(@"#LKDBHelper Message:\n" fmt,##__VA_ARGS__);
     #else
-        #define LKLog(fmt, ...) NSLog(@"\n#LKDBHelper ERROR: %s  [Line %d] \n" fmt, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
+        #define LKLog(fmt, ...) NSLog(@"\n#LKDBHelper Message: %s  [Line %d] \n" fmt, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
     #endif
 #else
 #   define LKLog(...)

LKDBHelper/LKAppDelegate.m

@@ -85,18 +85,39 @@ -(void)test
     test.date = [NSDate date];
     test.color = [UIColor orangeColor];
     test.error = @"nil";
-    
+
     //异步 插入第一条 数据   Insert the first
     [globalHelper insertToDB:test];
 
+    [globalHelper executeDB:^(FMDatabase *db) {
+        
+        [db beginTransaction];
+        
+        test.name = @"1";
+        [globalHelper insertToDB:test];
+        test.name = @"2";
+        [globalHelper insertToDB:test];
+        
+        test.name = @"3";
+        test.rowid = 0;     //no new object,should set rowid:0
+        BOOL insertSucceed = [globalHelper insertWhenNotExists:test];
+
+        //insert fail
+        if(insertSucceed == NO)
+            [db rollback];
+        else
+            [db commit];
+        
+    }];
+
+    
     addText(@"同步插入 完成!  Insert completed synchronization");
 
     sleep(1);
 
 
     //改个 主键 插入第2条数据   update primary colume value  Insert the second
     test.name = @"li si";
-    
     [globalHelper insertToDB:test callback:^(BOOL isInsert) {
         addText(@"asynchronization insert complete: %@",isInsert>0?@"YES":@"NO");
     }];
@@ -106,8 +127,8 @@ -(void)test
     //查询   search
     addText(@"同步搜索    sync search");
 
-    NSMutableArray* array = [LKTest searchWithWhere:nil orderBy:nil offset:0 count:100];
-    for (NSObject* obj in array) {
+    NSMutableArray* arraySync = [LKTest searchWithWhere:nil orderBy:nil offset:0 count:100];
+    for (NSObject* obj in arraySync) {
         addText(@"%@",[obj printAllPropertys]);
     }
 

LKDBHelper/LKTestModels.m

@@ -43,6 +43,8 @@ -(id)userGetValueForModel:(LKDBProperty *)property
 {
     if([property.sqlColumeName isEqualToString:@"address"])
     {
+        if(self.address == nil)
+            return @"";
         [LKTestForeign insertToDB:self.address];
         return @(self.address.addid);
     }
@@ -71,7 +73,8 @@ +(void)columeAttributeWithProperty:(LKDBProperty *)property
     }
     else if([property.propertyName isEqualToString:@"date"])
     {
-        property.isUnique = YES;
+        // if you use unique,this property will also become the primary key
+//        property.isUnique = YES;
         property.checkValue = @"MyDate > '2000-01-01 00:00:00'";
         property.length = 30;
     }