edu.illinois.cs.cogcomp.lbjava.infer

Class QuantifiedConstraintInvocation

java.lang.Object

edu.illinois.cs.cogcomp.lbjava.infer.Constraint

edu.illinois.cs.cogcomp.lbjava.infer.FirstOrderConstraint

edu.illinois.cs.cogcomp.lbjava.infer.QuantifiedConstraintInvocation

public class QuantifiedConstraintInvocation
extends FirstOrderConstraint

Represents the invocation of a parameterized constraint nested inside at least one quantification expression, where the parameter is a function of the quantification variables.

Author:

Nick Rizzolo

Field Summary

Fields

Modifier and Type	Field and Description
protected FirstOrderConstraint	constraint The latest result of invoking parameterized.
protected ParameterizedConstraint	parameterized The parameterized constraint that has been invoked.
protected InvocationArgumentReplacer	replacer The implementation of the function that computes the parameter.

Constructor Summary

Constructors

Constructor and Description
QuantifiedConstraintInvocation(ParameterizedConstraint p, InvocationArgumentReplacer iar) Initializing constructor.

Method Summary

Modifier and Type	Method and Description
void	consolidateVariables(AbstractMap m) Replaces all unquantified variables with the unique copy stored as a value of the given map; also instantiates all quantified variables and stores them in the given map.
boolean	equals(Object o) Two QuantifiedConstraintInvocations are equivalent when their children are equivalent.
boolean	evaluate() If this method is called without first calling setQuantificationVariables(Vector), false will be returned.
Constraint[]	getChildren() Returns the children of this constraint in an array.
int	hashCode() The hash code of a QuantifiedConstraintInvocation is the sum of the hash codes of its children.
PropositionalConstraint	propositionalize() If this method is called without first calling setQuantificationVariables(Vector), the constant representing false will be returned.
void	runVisit(Inference infer) Calls the appropriate visit(·) method of the given Inference for this Constraint, as per the visitor pattern.
void	setQuantificationVariables(Vector o) This method sets the given quantification variables to the given object references and evaluates the expressions involving those variables in this constraint's FirstOrderEquality children.

Methods inherited from class java.lang.Object

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

Field Detail

parameterized

protected ParameterizedConstraint parameterized

The parameterized constraint that has been invoked.

replacer

protected InvocationArgumentReplacer replacer

The implementation of the function that computes the parameter.

constraint

protected FirstOrderConstraint constraint

The latest result of invoking parameterized.

Constructor Detail

QuantifiedConstraintInvocation

public QuantifiedConstraintInvocation(ParameterizedConstraint p,
                                      InvocationArgumentReplacer iar)

Initializing constructor.

Parameters:

p - The invoked constraint.

iar - The parameter function implementation.

Method Detail

evaluate

public boolean evaluate()

If this method is called without first calling setQuantificationVariables(Vector), false will be returned.

Specified by:

evaluate in class Constraint

consolidateVariables

public void consolidateVariables(AbstractMap m)

Replaces all unquantified variables with the unique copy stored as a value of the given map; also instantiates all quantified variables and stores them in the given map.

Specified by:

consolidateVariables in class Constraint

Parameters:

m - The map in which to find unique copies of the variables.

setQuantificationVariables

public void setQuantificationVariables(Vector o)

This method sets the given quantification variables to the given object references and evaluates the expressions involving those variables in this constraint's FirstOrderEquality children.

Specified by:

setQuantificationVariables in class FirstOrderConstraint

Parameters:

o - The new object references for the enclosing quantification variables, in order of nesting.

getChildren

public Constraint[] getChildren()

Returns the children of this constraint in an array.

Specified by:

getChildren in class Constraint

Returns:

The children of this constraint in an array.

propositionalize

public PropositionalConstraint propositionalize()

If this method is called without first calling setQuantificationVariables(Vector), the constant representing false will be returned.

Specified by:

propositionalize in class FirstOrderConstraint

Returns:

The propositionalized constraint.

hashCode

public int hashCode()

The hash code of a QuantifiedConstraintInvocation is the sum of the hash codes of its children.

Overrides:

hashCode in class Object

Returns:

The hash code for this QuantifiedConstraintInvocation.

equals

public boolean equals(Object o)

Two QuantifiedConstraintInvocations are equivalent when their children are equivalent.

Overrides:

equals in class Object

Returns:

true iff the argument is an equivalent QuantifiedConstraintInvocation.

runVisit

public void runVisit(Inference infer)

Calls the appropriate visit(·) method of the given Inference for this Constraint, as per the visitor pattern.

Specified by:

runVisit in class Constraint

Parameters:

infer - The inference visiting this constraint.