org.globus.ftp

Class DataSourceStream

java.lang.Object

org.globus.ftp.DataSourceStream

All Implemented Interfaces:

DataSource

public class DataSourceStream
extends Object
implements DataSource

Reference implementation of DataSource. It can be used with non-parallel transfers. It cannot be used with Extended Block Mode because it is not thread safe.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	bufferSize
protected InputStream	in
protected long	totalRead

Constructor Summary

Constructors

Constructor and Description
DataSourceStream(InputStream in)
DataSourceStream(InputStream in, int bufferSize)

Method Summary

Modifier and Type	Method and Description
void	close() Closes this data source and releases any system resources associated with this source.
Buffer	read() Reads a data buffer from this data source.
long	totalSize() Optional operation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

in

protected InputStream in

bufferSize

protected int bufferSize

totalRead

protected long totalRead

Constructor Detail

DataSourceStream

public DataSourceStream(InputStream in)

DataSourceStream

public DataSourceStream(InputStream in,
                        int bufferSize)

Method Detail

read

public Buffer read()
            throws IOException

Description copied from interface: DataSource

Reads a data buffer from this data source.

Specified by:

read in interface DataSource

Returns:

The data buffer read. Null, if there is no more data to be read.

Throws:

IOException - if an I/O error occurs.

close

public void close()
           throws IOException

Description copied from interface: DataSource

Closes this data source and releases any system resources associated with this source.

Specified by:

close in interface DataSource

Throws:

IOException - if an I/O error occurs.

totalSize

public long totalSize()

Description copied from interface: DataSource

Optional operation. Returns the total size, in bytes, of the data in this source. If the implementation is not able to provide a total size for the data source, it should return -1

Specified by:

totalSize in interface DataSource