AttackRelation

java.lang.Object
- net.sf.tweety.arg.lp.semantics.AttackRelation

```
public class AttackRelation
extends java.lang.Object
```
This class represents an attack relation for a specific set of arguments represented by an ArgumentationKnowledgeBase.

Author:

Sebastian Homann

Constructor Summary

Constructors
Constructor	Description
`AttackRelation(ArgumentationKnowledgeBase kb, AttackStrategy strategy)`	Creates a new AttackRelation for an argumentation knowledgebase and a certain notion of attack.

Method Summary

Modifier and Type	Method	Description
`boolean`	`attacks(java.util.Set<Argument> attacker, Argument b)`	Is true iff at least one attacking argument attacks b
`boolean`	`attacks(Argument a, Argument b)`	Returns true iff argument a attacks argument b for the notion of attack represented by this attack relation.
`java.util.Set<Argument>`	`getAttackingArguments(Argument a)`	Returns all arguments from the knowledgebase, that attack argument a.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AttackRelation
```
public AttackRelation(ArgumentationKnowledgeBase kb,
                      AttackStrategy strategy)
```
    Creates a new AttackRelation for an argumentation knowledgebase and a certain notion of attack.
    
    Parameters:
    
    kb - an argument knowledge base
    
    strategy - a notion of attack for arguments in the knowledgebase
- Method Detail
  - attacks
```
public boolean attacks(Argument a,
                       Argument b)
```
    Returns true iff argument a attacks argument b for the notion of attack represented by this attack relation.
    
    Parameters:
    
    a - an argument
    
    b - another argument
    
    Returns:
    
    true iff argument a attacks argument b
  - attacks
```
public boolean attacks(java.util.Set<Argument> attacker,
                       Argument b)
```
    Is true iff at least one attacking argument attacks b
    
    Parameters:
    
    attacker - a set of arguments
    
    b - argument to be attacked by one or more arguments from the attacking set
    
    Returns:
    
    true iff at least one argument from attacker attacks b
  - getAttackingArguments
```
public java.util.Set<Argument> getAttackingArguments(Argument a)
```
    Returns all arguments from the knowledgebase, that attack argument a.
    
    Parameters:
    
    a - an argument
    
    Returns:
    
    the set of arguments from kb, that attack argument a