ReadFromSupport (Apache Axiom)

All Known Implementing Classes:

MemoryBlobOutputStream
```
public interface ReadFromSupport
```
Optional interface implemented by OutputStream implementations that support transferring data from an InputStream. This interface may be used to avoid allocating a temporary buffer when there is a need to copy data from an input stream to an output stream.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`readFrom(InputStream inputStream, long length)`	Read data from the given input stream and write it to this output stream.

- Method Detail
  - readFrom
```
long readFrom(InputStream inputStream,
              long length)
       throws StreamCopyException
```
    Read data from the given input stream and write it to this output stream. The method transfers data until one of the following conditions is met:
    
    The end of the input stream is reached.
    The value of the length argument is different from -1 and the number of bytes transferred is equal to length.
    Parameters:
    
    inputStream - An input stream to read data from. This method will not close the stream.
    
    length - the number of bytes to transfer, or -1 if the method should transfer data until the end of the input stream is reached
    
    Returns:
    
    the number of bytes transferred
    
    Throws:
    
    StreamCopyException