added support for savepoints (a kind of nested transaction)

README.markdown

@@ -179,7 +179,7 @@ Starting a transaction will keep the db from going back into the pool automatica
 
 There is also a block based transaction approach:
 
-	[dbPool useTransaction:^(FMDatabase *db, BOOL *rollback) {
+	[dbPool inTransaction:^(FMDatabase *db, BOOL *rollback) {
 		[db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumber numberWithInt:1]];
 		[db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumber numberWithInt:2]];
 		[db executeUpdate:@"INSERT INTO myTable VALUES (?)", [NSNumber numberWithInt:3]];

fmdb.xcodeproj/project.pbxproj

@@ -259,6 +259,7 @@
 		1DEB927508733DD40010E9CD /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				COPY_PHASE_STRIP = NO;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_ENABLE_FIX_AND_CONTINUE = YES;

src/FMDatabase.h

@@ -9,15 +9,13 @@
 	NSString*           _databasePath;
     BOOL                _logsErrors;
     BOOL                _crashOnErrors;
-    BOOL                _inTransaction;
     BOOL                _traceExecution;
     BOOL                _checkedOut;
     BOOL                _shouldCacheStatements;
-    BOOL                _inUse;
+    BOOL                _isExecutingStatement;
+    BOOL                _inTransaction;
     int                 _busyRetryTimeout;
 
-
-
     NSMutableDictionary *_cachedStatements;
 	NSMutableSet        *_openResultSets;
 
@@ -26,7 +24,6 @@
 }
 
 
-@property (assign) BOOL inTransaction;
 @property (assign) BOOL traceExecution;
 @property (assign) BOOL checkedOut;
 @property (assign) int busyRetryTimeout;
@@ -58,6 +55,8 @@
 
 - (int)lastErrorCode;
 - (BOOL)hadError;
+- (NSError*)lastError;
+
 - (sqlite_int64)lastInsertRowId;
 
 - (sqlite3*)sqliteHandle;
@@ -77,10 +76,17 @@
 - (BOOL)commit;
 - (BOOL)beginTransaction;
 - (BOOL)beginDeferredTransaction;
-
+- (BOOL)inTransaction;
 - (BOOL)shouldCacheStatements;
 - (void)setShouldCacheStatements:(BOOL)value;
 
+#if SQLITE_VERSION_NUMBER >= 3007000
+- (BOOL)startSavePointWithName:(NSString*)name error:(NSError**)outErr;
+- (BOOL)releaseSavePointWithName:(NSString*)name error:(NSError**)outErr;
+- (BOOL)rollbackToSavePointWithName:(NSString*)name error:(NSError**)outErr;
+- (NSError*)inSavePoint:(void (^)(BOOL *rollback))block;
+#endif
+
 + (BOOL)isSQLiteThreadSafe;
 + (NSString*)sqliteLibVersion;