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authorrowanbeentje <rowan@beent.je>2013-08-13 23:49:31 +0000
committerrowanbeentje <rowan@beent.je>2013-08-13 23:49:31 +0000
commitef60b2022d50b99e6de78cc301bf71e8b336ae0e (patch)
tree175e38fc968dec070ca8a872f7b87502b62e8c82 /Frameworks/SPMySQLFramework/Source/SPMySQLResult Categories/Data Conversion.h
parent80c152501303c0ed7bd530f5e05bc7e5a6fba7f5 (diff)
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Rework table content and custom query data loading and storage for speed increases and lower memory usage:
- Add a new SPMySQLStreamingResultStore class to SPMySQL.framework. This class acts as both a result set and a data store for the accompanying data, storing the row information in a custom format in a custom malloc zone. - Amend SPDataStorage to wrap the new class, so original result information is stored in the one location in the custom format. Any edited information is handled by SPDataStorage for clean separation - Rework table content and custom query data data stores to use the new class. This significantly speeds up data loading, resulting in faster data loads if they weren't previously network constrained, or lower CPU usage otherwise. The memory usage is also lowered, with the memory overhead for many small cells being enormously reduced.
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+//
+// $Id$
+//
+// Data Conversion.h
+// SPMySQLFramework
+//
+// Created by Rowan Beentje (rowan.beent.je) on May 26, 2013
+// Copyright (c) 2013 Rowan Beentje. 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/>
+
+@interface SPMySQLResult (Data_Conversion_Private_API)
+
+- (id)_getObjectFromBytes:(char *)bytes ofLength:(NSUInteger)length fieldDefinitionIndex:(NSUInteger)fieldIndex previewLength:(NSUInteger)previewLength;
+
+static inline SPMySQLResultFieldProcessor _processorForField(MYSQL_FIELD aField);
+
+static inline NSString * _stringWithBytes(const void *dataBytes, NSUInteger dataLength, NSStringEncoding aStringEncoding, NSUInteger previewLength);
+static inline NSString * _bitStringWithBytes(const char *bytes, NSUInteger length, NSUInteger padLength);
+
+@end