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Java Source Code / Java Documentation » ERP CRM Financial » SourceTap CRM » org.ofbiz.rules.engine 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.ofbiz.rules.engine.Unification

Unification
public class Unification (Code)

Title: Unification

Description: None

Copyright (c) 1999 Steven J. Metsker.

Copyright (c) 2001 The Open For Business Project - www.ofbiz.org

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

A Unification is a collection of variables. Structures and variables use unifications to keep track of the variable assignments that make a proof work. The unification class itself provides behavior for adding and accessing variables.
author:
   Steven J. Metsker
version:
   1.0



Field Summary
final public static  Unificationempty
    
 Listvector
    

Constructor Summary
public  Unification()
     Creates an empty unification.
public  Unification(Variable v)
     Creates a unification that starts off including a single variable.

Method Summary
public  UnificationaddVariable(Variable v)
     Adds a variable to this unification.
public  Unificationappend(Unification u)
     Adds all the variables of another unification to this one.
public  Enumerationelements()
     Return the variables in this unification.
public  intsize()
     Returns the number of variables in this unification.
public  StringtoString()
     Returns a string representation of this unification.
public  StringtoStringQuiet()
     Returns a string representation of this unification, without printing variable names.
public  voidunbind()
     Asks all the contained variables to unbind.
protected  VariablevariableAt(int i)
     Returns the variable at the indicated index.
protected  Listvector()
    

Field Detail
empty
final public static Unification empty(Code)



vector
List vector(Code)




Constructor Detail
Unification
public Unification()(Code)
Creates an empty unification.



Unification
public Unification(Variable v)(Code)
Creates a unification that starts off including a single variable.
Parameters:
  Variable - the variable with which the unificationbegins




Method Detail
addVariable
public Unification addVariable(Variable v)(Code)
Adds a variable to this unification.
Parameters:
  Variable - the variable to add to this unification this unification



append
public Unification append(Unification u)(Code)
Adds all the variables of another unification to this one.
Parameters:
  Unification - the unification to append this unification



elements
public Enumeration elements()(Code)
Return the variables in this unification. the variables in this unification.



size
public int size()(Code)
Returns the number of variables in this unification. int the number of variables in this unification



toString
public String toString()(Code)
Returns a string representation of this unification. a string representation of this unification



toStringQuiet
public String toStringQuiet()(Code)
Returns a string representation of this unification, without printing variable names. a string representation of this unification,without printing variable names



unbind
public void unbind()(Code)
Asks all the contained variables to unbind.



variableAt
protected Variable variableAt(int i)(Code)
Returns the variable at the indicated index. int the index of the variable to return variable the variable at the indicated index



vector
protected List vector()(Code)
lazy-initialize this unification's vector



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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