Package edu.uiuc.ncsa.security.core.inheritance

Class MultipleInheritanceEngine

java.lang.Object

edu.uiuc.ncsa.security.core.inheritance.MultipleInheritanceEngine

public class MultipleInheritanceEngine
extends Object

Resolves ordered multiple inheritance lists, used e.g. in configurations. This only works on names and relations between them. It returns a list of names (all names and aliases are assumed unique).

Multiple Inheritance Model

There are many multiple inheritance schemes. This supports linearly order-based inheritance. So this engine gets lists of overrides (unique names) and aliases (unique) and makes a list. It is then up to the calling program to navigate the inheritance order. This allows for an easy solution to the so-called diamond problem which cannot exist here because of the linear ordering.

Created by Jeff Gaynor
on 2/2/21 at 6:29 AM

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	DEBUG_ON

Constructor Summary

Constructors

Constructor	Description
MultipleInheritanceEngine(InheritanceMap atomicNodes, InheritanceMap unresolvedAliases, InheritanceMap unresolvedOverrides)

Method Summary

Modifier and Type	Method	Description
protected void	debugPrint()
InheritanceMap	getAtomicNodes()
Map<String,AliasAndOverrides>	getResolvedAliases()
Map<String,InheritanceList>	getResolvedOverrides()
InheritanceMap	getUnresolvedAliases()
InheritanceMap	getUnresolvedOverrides()
boolean	isResolutionsRun()	If the resolve method for this class has been run sucessfully.
void	resolve()
protected void	resolveAlias()
protected void	resolveAliasOverrides()
protected void	resolveAliasOverrides2()	Snoops through the aliases by tracing the known resolved nodes.
protected InheritanceList	resolveInhertanceList(AliasAndOverrides aao)	Loops through a list that is not resolved.
protected void	resolveSimpleOverrides()
void	setAtomicNodes(InheritanceMap atomicNodes)
void	setResolvedAliases(InheritanceMap resolvedAliases)
void	setResolvedOverrides(Map<String,InheritanceList> resolvedOverrides)
void	setUnresolvedAliases(InheritanceMap unresolvedAliases)
void	setUnresolvedOverrides(InheritanceMap unresolvedOverrides)

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG_ON

public static boolean DEBUG_ON

Constructor Detail

MultipleInheritanceEngine

public MultipleInheritanceEngine(InheritanceMap atomicNodes,
                                 InheritanceMap unresolvedAliases,
                                 InheritanceMap unresolvedOverrides)

Method Detail

isResolutionsRun

public boolean isResolutionsRun()

If the resolve method for this class has been run sucessfully.

Returns:

getAtomicNodes

public InheritanceMap getAtomicNodes()

setAtomicNodes

public void setAtomicNodes(InheritanceMap atomicNodes)

getUnresolvedAliases

public InheritanceMap getUnresolvedAliases()

setUnresolvedAliases

public void setUnresolvedAliases(InheritanceMap unresolvedAliases)

getUnresolvedOverrides

public InheritanceMap getUnresolvedOverrides()

setUnresolvedOverrides

public void setUnresolvedOverrides(InheritanceMap unresolvedOverrides)

getResolvedAliases

public Map<String,AliasAndOverrides> getResolvedAliases()

setResolvedAliases

public void setResolvedAliases(InheritanceMap resolvedAliases)

getResolvedOverrides

public Map<String,InheritanceList> getResolvedOverrides()

setResolvedOverrides

public void setResolvedOverrides(Map<String,InheritanceList> resolvedOverrides)

resolve

public void resolve()

debugPrint

protected void debugPrint()

resolveAlias

protected void resolveAlias()

resolveInhertanceList

protected InheritanceList resolveInhertanceList(AliasAndOverrides aao)

Loops through a list that is not resolved. If every element in the list is resolved, they are replaced with their resolution. If this fails (for instance, there is an unresolved alias on the list) then null is returned. Generally invoke this and if null, skip it.

Parameters:

aao -

Returns:

resolveSimpleOverrides

protected void resolveSimpleOverrides()

resolveAliasOverrides

protected void resolveAliasOverrides()

resolveAliasOverrides2

protected void resolveAliasOverrides2()

Snoops through the aliases by tracing the known resolved nodes.