edu.udo.cs.yale.operator
Class IODescription

java.lang.Object
  edu.udo.cs.yale.operator.IODescription

public class IODescription
extends java.lang.Object

This class is a description of the (expected) input and (guaranteed) output classes of operators. It provides easy default implementations.

Version:

$Id: IODescription.java,v 2.10 2006/08/03 14:39:31 ingomierswa Exp $

Author:

Simon Fischer, Ingo Mierswa

Field Summary

static int	DELETE_UNUSED_INPUT
private java.lang.Class<?>[]	inputClasses
private int	outputBehaviour
private java.lang.Class<?>[]	outputClasses
static int	PASS_UNUSED_INPUT_TO_OUTPUT

Constructor Summary

IODescription(java.lang.Class[] input, java.lang.Class[] output)
Assumes PASS_UNUSED_INPUT_TO_OUTPUT.

IODescription(java.lang.Class[] input, java.lang.Class[] output, int outputBehaviour)
Constructs a new IODescription where all input and output classes are expected exactly once.

Method Summary

static boolean	containsClass(java.lang.Class<?> c, java.lang.Class<?>[] oc) Returns true if oc contains a class which is a superclass of c.
java.lang.Class[]	getInputClasses() Returns the classes that are expected as input.
java.lang.Class[]	getOutputClasses(java.lang.Class<?>[] input, Operator operator) Returns the output classes dependent on the outputBehaviour PASS_UNUSED_INPUT_TO_OUTPUT:output classes are the classes used in the constructor plus those classes in input[] that were not consumed.

Methods inherited from class java.lang.Object

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

Field Detail

PASS_UNUSED_INPUT_TO_OUTPUT

public static final int PASS_UNUSED_INPUT_TO_OUTPUT

See Also:

Constant Field Values

DELETE_UNUSED_INPUT

public static final int DELETE_UNUSED_INPUT

See Also:

Constant Field Values

inputClasses

private java.lang.Class<?>[] inputClasses

outputClasses

private java.lang.Class<?>[] outputClasses

outputBehaviour

private int outputBehaviour

Constructor Detail

IODescription

public IODescription(java.lang.Class[] input,
                     java.lang.Class[] output,
                     int outputBehaviour)

Constructs a new IODescription where all input and output classes are expected exactly once. Output is the minimum set of output classes, the real output classes are determined by the outputBehaviour. Both input and ouput may be null and may contain a class more than once.

IODescription

public IODescription(java.lang.Class[] input,
                     java.lang.Class[] output)

Assumes PASS_UNUSED_INPUT_TO_OUTPUT.

Method Detail

getInputClasses

public java.lang.Class[] getInputClasses()

Returns the classes that are expected as input.

getOutputClasses

public java.lang.Class[] getOutputClasses(java.lang.Class<?>[] input,
                                          Operator operator)
                                   throws IllegalInputException

Returns the output classes dependent on the outputBehaviour

• PASS_UNUSED_INPUT_TO_OUTPUT:output classes are the classes used in the constructor plus those classes in input[] that were not consumed. Classes are supposed to be consumed by the operator if they find a matching class in the input classes used in the constructor (which can be a superclass or interface)
• DELETE_UNUSED_INPUT:output classes are exactly those classes used in the constructor.

In either case the output classes precede the unused input classes. Their order is conserved.

Throws:

IllegalInputException

containsClass

public static boolean containsClass(java.lang.Class<?> c,
                                    java.lang.Class<?>[] oc)

Returns true if oc contains a class which is a superclass of c.