CloudFileOp
Summary
Performs file related operations that are cloud specific.
Discussion
This class cannot be instantiated directly. An instance of this class is returned by the AIOFile object's cloud property.
Methods
clearcache()
Clears file properties and BLOB region cache. Call this method when an external process updates the file.
cloud_io = AIO(r"C:\data\datacloud.acs")
rcsfile = cloud_io.open(r'testfile.txt', 'r')
rcsfile.cloud.clearcache()
usebufferedreader()
Caches last read bytes.
cloud_io = AIO(r"C:\data\datacloud.acs")
rcsfile = cloud_io.open(r'testfile.txt', 'r')
rcsfile.cloud.usebufferedreader()
usecachedfile({blocksize}, {cachesize})
Uses least recently used (LRU) block cache for handling files on cloud.
| Name | Explanation | Data type |
|---|---|---|
|
blocksize (Optional) |
The block size. The default value is 32768. |
Integer |
|
cachesize (Optional) |
The cache size. The default value is 0. |
Integer |
cloud_io = AIO(r"C:\data\datacloud.acs")
rcsfile = cloud_io.open(r'testfile.txt', 'r')
rcsfile.cloud.usecachedfile(blocksize=32768, cachesize=0)