Seen

java.lang.Object
- org.projog.core.predicate.AbstractSingleResultPredicate
- - org.projog.core.predicate.builtin.io.Seen

All Implemented Interfaces:

KnowledgeBaseConsumer, PredicateFactory
```
public final class Seen
extends AbstractSingleResultPredicate
```
seen - closes the current input stream.
The new input stream becomes user_input.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Seen()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  private void close(FileHandles fileHandles, Term handle)
  
  protected boolean evaluate()
  - Methods inherited from class org.projog.core.predicate.AbstractSingleResultPredicate
    evaluate, evaluate, evaluate, evaluate, evaluate, getArithmeticOperators, getFileHandles, getKnowledgeBase, getOperands, getPredicate, getPredicates, getProjogListeners, getSpyPoints, getTermFormatter, init, isRetryable, setKnowledgeBase
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  - Methods inherited from interface org.projog.core.predicate.PredicateFactory
    isAlwaysCutOnBacktrack

Constructor Detail
- Seen
```
public Seen()
```

Method Detail

evaluate
```
protected boolean evaluate()
```
Overrides:

evaluate in class AbstractSingleResultPredicate

close

private void close(FileHandles fileHandles,
                   Term handle)