Filter:Pascal Plain C C++ (DLL/Lib) C++ (VCL) C++ (.NET) C# VB.NET Java
This event is fired when custom compression is used and data block must be decompressed.
byte ISolFSCompressionEvents.onDataDecompress(byte inData)
- Sender - reference to the class that called the delegate/event handler
- InData - buffer with data to be decompressed
- InSize - length of the incoming buffer
- OutData - the buffer for decompressed data
- OutSize - actual size of decompressed data (see description)
- Result - out parameter (return value for DLL) where the application places the result of the operation. If you are working with file system, Win32 error code is a good candidate for placing to Result parameter. Otherwise you can use any other error codes, just be sure that 0 means success.
[Java]See Description for details about error reporting in Java.
- [Plain C] UserData - application-defined parameter which is specified when creating the storage and passed back to callback function.
[Java] Return values
The buffer which contains the decompressed data.
The event is fired when custom compression is used and the data block must be decompressed. Data to decompress is put to InData parameter. The size of the incoming data is placed to InSize. The event handler should put the result of decompression to the buffer referenced by OutData parameter. OutSize should be set to the number of bytes, put to OutData parameter.
The callback/event handler must be set before the storage is opened.
You need to implement ISolFSCompressionEvents interface in your code and pass the object, that implements the events, to one of SolFSStorage constructors that accept storageEvents parameter.
ERROR REPORTING: In Java you can't return more than one parameter, so the natural way is to throw an exception. You can throw any exception, and this exception will be passed back to the code, which called one of SolFS functions. So if you use callback mechanism and throw exception from within event handlers, be sure to wrap each call to SolFS methods with try/catch.