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improve memory usage during large exports, particularly improving memory which appeared to never be reclaimed
- Fix some minor memory leaks throughout the application
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- Tweak README
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- The ability to easily index multiple columns
- The ability to specify the storage type (HASH or BTREE) that should be used when available and permitted
- The ability to specify a length prefix when indexing a specific column (required on TEXT columns)
Requires lots of testing.
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- A new SPExportFile class, providing an abstract interface to the handling and creation of export files.
- Enables the centralisation of all file/file handle creation logic as well as better support for handling situations where files fail to be created, including files that already exist at the export location.
- New SPExportFileHandleStatus constants to support the reporting of file handle creation.
- Update SPExporter to use the new file class instead of directly using an instance of SPFileHandle.
- Add the necessary logic to deal with files that already exist on disk, by providing the user with 3 options: cancel the export, ignore the files in question or overwrite them. We might want to enhance this to make new files sequential in name to prevent overwriting. Fixes issue #742.
- New SPExportFileUtilities category, which centralises all the logic relating to writing export type headers as well as dealing with problems occurred during file/file handle creation.
- Improve feedback given on the export progress sheet during export initialisation.
- Tidy up and improve comments.
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when reading uncompressed files
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ability to use Bzip2 compression.
Other changes include:
+ Enable the use of export compression (Gzip and Bzip2) for all export formats.
+ Move the compression options in the export dialog to the 'Advanced' export settings view.
+ Simplify the setting of common exporter properties (e.g. the connection, use of compression).
+ Fix a potential memory leak in the dot exporter.
+ Update the data importer to recognise Bzip2 compressed files.
+ Fix several display issues on export dialog.
+ Restore the default .csv file extension of CSV exports.
+ Correctly update the default export filename when selecting a output compression type.
The addition of Bzip2 compression support implements issue #688.
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increased separation of the writing thread. This results in a up-to 1.2x faster MySQL dump for fast servers, and makes SPFileHandle faster than NSFileHandle for writing data (either directly or GZIP compressed).
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function documentation
- Tweak subfolder ordering
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background thread, and integrate for SQL import:
- Implement streaming reading of gzip-compressed files for SQL import
- Support exporting SQL dumps into a gzip-compressed file
- SPFileHandle supports the most-used subset of NSFileHandle commands for easy integration
- Integrate zlib 1.2.4 for improved gzip streaming performance (and support for custom buffer sizes and file offset positions)
This implements Issue #571 .
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