MessageSource
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package spi
Closes the input.
Closes the input.
When this method is called, the buffer previously returned from next method is no longer used. Thus implementation of this method can safely discard it.
If the input is already closed then invoking this method has no effect.
Exception when IO error occurred when closing the data source
Returns a next buffer to read.
Returns a next buffer to read.
This method should return a ReadBuffer instance that has data filled in. When this method is called twice, the previously returned buffer is no longer used. Thus implementation of this method can safely discard it. This is useful when it uses a memory pool.
the next input ReadBuffer, or return None if no more buffer is available.
java.io.IOException when IO error occurred when reading the data