uk.org.ogsadai.common
Interface BlockReader

All Known Subinterfaces:

Pipe

All Known Implementing Classes:

CallThroughExternalPipe, CallThroughPipe, DataTransportBlockReader, NonBufferingPipe, SimplePipe, SynchronizedGrowableExternalPipe, SynchronizedGrowablePipe, SynchronizedPipe

public interface BlockReader

This is an interface to read blocks of input data from. A block of input data is an Object the type of which depends on the producer.

Author:

The OGSA-DAI Project Team

next

public java.lang.Object next()

Gets the next block of data contained in the block reader.

Returns:

an Object

Throws:

java.util.NoSuchElementException - if there are no more blocks to read

hasNext

public boolean hasNext()

Indicates whether or not there are any more blocks of data to be read from the block reader.

Returns:

true if there are more blocks to be read or false otherwise