public abstract class TupleStream extends Object implements Serializable
| Constructor and Description |
|---|
TupleStream() |
| Modifier and Type | Method and Description |
|---|---|
abstract List<TupleStream> |
children() |
abstract void |
close() |
int |
getCost() |
abstract void |
open() |
abstract Tuple |
read() |
abstract void |
setStreamContext(StreamContext context) |
public abstract void setStreamContext(StreamContext context)
public abstract List<TupleStream> children()
public abstract void open()
throws IOException
IOExceptionpublic abstract void close()
throws IOException
IOExceptionpublic abstract Tuple read() throws IOException
IOExceptionpublic int getCost()
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