Package jadex.rules.rulesystem.rete.extractors

Class JavaArrayExtractor

java.lang.Object

jadex.rules.rulesystem.rete.extractors.JavaArrayExtractor

All Implemented Interfaces:

IValueExtractor

public class JavaArrayExtractor
extends java.lang.Object
implements IValueExtractor

An extractor for getting elements from arrays.

Field Summary

Fields

Modifier and Type	Field	Description
protected IValueExtractor	index	The index value extractor.
protected IValueExtractor	objex	The object extractor.

Constructor Summary

Constructors

Constructor	Description
JavaArrayExtractor(IValueExtractor objex, IValueExtractor index)	Create a new array extractor.

Method Summary

Modifier and Type	Method	Description
AttributeSet	getIndirectAttributes()	Get the set of indirect attribute types.
AttributeSet	getRelevantAttributes()	Get the set of relevant attribute types.
java.lang.Object	getValue(Tuple left, java.lang.Object right, java.lang.Object prefix, IOAVState state)	Get the value of an attribute from an object or tuple.
boolean	isAffected(int tupleindex, OAVAttributeType attr)	Test if a constraint evaluator is affected from a change of a certain attribute.

Methods inherited from class java.lang.Object

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

Field Detail

objex

protected IValueExtractor objex

The object extractor.

index

protected IValueExtractor index

The index value extractor.

Constructor Detail

JavaArrayExtractor

public JavaArrayExtractor(IValueExtractor objex,
                          IValueExtractor index)

Create a new array extractor.

Parameters:

objex - The object extractor.

index - The index extractor.

Method Detail

getValue

public java.lang.Object getValue(Tuple left,
                                 java.lang.Object right,
                                 java.lang.Object prefix,
                                 IOAVState state)

Get the value of an attribute from an object or tuple.

Specified by:

getValue in interface IValueExtractor

Parameters:

left - The left input tuple.

right - The right input object.

prefix - The prefix input object (last value from previous extractor in a chain).

state - The working memory.

isAffected

public boolean isAffected(int tupleindex,
                          OAVAttributeType attr)

Test if a constraint evaluator is affected from a change of a certain attribute.

Specified by:

isAffected in interface IValueExtractor

Parameters:

tupleindex - The tuple index (-1 for object).

attr - The attribute.

Returns:

True, if affected.

getRelevantAttributes

public AttributeSet getRelevantAttributes()

Get the set of relevant attribute types.

Specified by:

getRelevantAttributes in interface IValueExtractor

Returns:

The relevant attribute types.

getIndirectAttributes

public AttributeSet getIndirectAttributes()

Get the set of indirect attribute types. I.e. attributes of objects, which are not part of an object conditions (e.g. for chained extractors)

Specified by:

getIndirectAttributes in interface IValueExtractor

Returns:

The relevant attribute types.