org.semwebcentral.sweetrules.ruleml
Class SweetEqualityChecker

java.lang.Object
  org.semwebcentral.sweetrules.ruleml.SweetEqualityChecker

public class SweetEqualityChecker

extends java.lang.Object

Created on Oct 30, 2004 A utility class to check if two elements in the RuleML object representation are equal in terms of their content. Note:
1) If List type arguments are being compared then their orders should be the same

2) The top level element currently supported is a fact

3) Due to translation issues from RuleML -> Jess we are not comparing the rulelabels on Facts

Author:

Shashidhara K Ganjugunte, Dr. Benjamin Grosof, Dr. Said Tabet, Chitravanu Neogy

Field Summary

private static SweetEqualityChecker

sweetEqualityChecker The singleton instance

Constructor Summary

private

SweetEqualityChecker() The private constructor for this Singleton class

Method Summary

boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.AndhType andh1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.AndhType andh2) Compares two andh elements for equality
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.AtomType atom1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.AtomType atom2) Compares two atoms for equality
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.CslitType cslit1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.CslitType cslit2) Compares two csliteral for equality
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.CtermType cterm1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.CtermType cterm2) Compares the two Cterms to see if they are same
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.FactType fact1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.FactType fact2) Checks if the two input facts are equal.
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.HeadType head1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.HeadType head2) Compares for the equality of two heads
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.IndType ind1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.IndType ind2) Compares two ind values for equality
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.OprType opr1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.OprType opr2) Compares two oprs
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.RelType rel1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.RelType rel2) Compares two rel values
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.RlabType rlab1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.RlabType rlab2) Compares two rule labels
boolean	areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.Var var1, org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.Var var2) Compares two variables for equality
boolean	areSameTerms(java.util.List indOrVarOrCtermList1, java.util.List indOrVarOrCtermList2) Compares two term lists for equality
boolean	bothObjectsNull(java.lang.Object obj1, java.lang.Object obj2) Compares two objects for nullity
static SweetEqualityChecker	getInstance() Accessor method for the single ton class
boolean	onlyOneObjectNull(java.lang.Object obj1, java.lang.Object obj2) Checks if only one of the objects is null and the other isn't

Methods inherited from class java.lang.Object

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

Field Detail

sweetEqualityChecker

private static SweetEqualityChecker sweetEqualityChecker

The singleton instance

Constructor Detail

SweetEqualityChecker

private SweetEqualityChecker()

The private constructor for this Singleton class

Method Detail

getInstance

public static SweetEqualityChecker getInstance()

Accessor method for the single ton class

Returns:

The singleton instance

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.FactType fact1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.FactType fact2)

Checks if the two input facts are equal. For now we are not comparing the rule labels for facts

Parameters:

fact1 - The first fact

fact2 - The second fact

Returns:

true if the facts are equal

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.RlabType rlab1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.RlabType rlab2)

Compares two rule labels

Parameters:

rlab1 - First rule label

rlab2 - Second rule label

Returns:

true if both rule labels are same

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.HeadType head1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.HeadType head2)

Compares for the equality of two heads

Parameters:

head1 - The first head argument

head2 - The second head argument

Returns:

true if both the head arguments are equal

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.AtomType atom1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.AtomType atom2)

Compares two atoms for equality

Parameters:

atom1 - The first atom

atom2 - The second atom

Returns:

true if both the atoms are equal

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.OprType opr1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.OprType opr2)

Compares two oprs

Parameters:

opr1 - The first opr

opr2 - The second opr

Returns:

true if both the oprs are the same

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.RelType rel1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.RelType rel2)

Compares two rel values

Parameters:

rel1 - The first rel value

rel2 - The second rel value

Returns:

true if both the rel values are equal

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.CslitType cslit1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.CslitType cslit2)

Compares two csliteral for equality

Parameters:

cslit1 - The first cslit

cslit2 - The second cslit

Returns:

true if the cslits are equal

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.AndhType andh1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.AndhType andh2)

Compares two andh elements for equality

Parameters:

andh1 - The first andh element

andh2 - The second andh element

Returns:

true if both are equal

areSameTerms

public boolean areSameTerms(java.util.List indOrVarOrCtermList1,
                            java.util.List indOrVarOrCtermList2)

Compares two term lists for equality

Parameters:

indOrVarOrCtermList1 - The first term list

indOrVarOrCtermList2 - The second term list

Returns:

true if they are equal

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.IndType ind1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.IndType ind2)

Compares two ind values for equality

Parameters:

ind1 - The first ind value

ind2 - The second ind value

Returns:

true if both ind values are equal

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.CtermType cterm1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.CtermType cterm2)

Compares the two Cterms to see if they are same

Parameters:

cterm1 - The first cterm

cterm2 - The second cterm

Returns:

if the names of the cterms are the same then true is returned, false otherwise

areSame

public boolean areSame(org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.Var var1,
                       org.semwebcentral.sweetrules.ruleml.sweetrulemlobjectmodel.Var var2)

Compares two variables for equality

Parameters:

var1 - The first variable

var2 - The second variable

Returns:

true if two variables are same

bothObjectsNull

public boolean bothObjectsNull(java.lang.Object obj1,
                               java.lang.Object obj2)

Compares two objects for nullity

Parameters:

obj1 - The first object

obj2 - The second object

Returns:

true if both objects are null, false otherwise

onlyOneObjectNull

public boolean onlyOneObjectNull(java.lang.Object obj1,
                                 java.lang.Object obj2)

Checks if only one of the objects is null and the other isn't

Parameters:

obj1 - The first object

obj2 - The second object

Returns:

true if only one of the objects is null, false otherwise