SimpleAssignmentStrategy.AnalysisContext.StrengthComparator (Java API Reference for Oracle® Coherence Community Edition)

java.lang.Object
- com.tangosol.net.partition.SimpleAssignmentStrategy.AnalysisContext.StrengthComparator

All Implemented Interfaces:

Comparator

Enclosing class:

SimpleAssignmentStrategy.AnalysisContext
```
public class SimpleAssignmentStrategy.AnalysisContext.StrengthComparator
extends Object
implements Comparator
```
StrengthComparator is an Comparator that can be used to compare two Member objects based on their "distance" from a given set of members (as represented by an Ownership object). Member distances are expressed with the granularity of "machine", "rack", and "site".
A member is ordered "lower" than another member if it has a larger combined distance from the reference members (ownership) (i.e. it is "stronger"). Members with equivalent distances are ordered arbitrarily.
Note: This comparator does not define an ordering that is "consistent with equals". If used in a context requiring such a natural ordering, it should be chained with comparator that does provide a natural ordering.

Field Summary

Fields
Modifier and Type Field Description

protected Ownership m_owners
The ownership.

Constructor Summary

Constructors
Constructor Description

StrengthComparator(Ownership owners)
Construct a StrengthComparator for the specified reference ownership.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`compare(Object o1, Object o2)`
`protected int`	`getDistance(Member member)`	Return the "distance" of the specified member from the reference ownership.
`protected int`	`getDistance(Member member1, Member member2)`	Return the "distance" between the specified members.
`Ownership`	`getOwnership()`	Return the ownership to use in comparing member strength.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator
equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

- Field Detail
  - m_owners
```
protected Ownership m_owners
```
    The ownership.
- Constructor Detail
  - StrengthComparator
```
public StrengthComparator(Ownership owners)
```
    Construct a StrengthComparator for the specified reference ownership.
    
    Parameters:
    
    owners - the ownership, from which to determine member strength
- Method Detail
  - getOwnership
```
public Ownership getOwnership()
```
    Return the ownership to use in comparing member strength.
    
    Returns:
    
    the ownership
  - compare
```
public int compare(Object o1,
                   Object o2)
```
    Specified by:
    
    compare in interface Comparator
  - getDistance
```
protected int getDistance(Member member)
```
    Return the "distance" of the specified member from the reference ownership. The distance reflects granularities of "machine", "rack" and "site", and in the case of multiple-backups, reflects combined distances to each backup.
    
    Parameters:
    
    member - the member to return the distance for
    
    Returns:
    
    the "distance"
  - getDistance
```
protected int getDistance(Member member1,
                          Member member2)
```
    Return the "distance" between the specified members.
    
    Parameters:
    
    member1 - the first member
    
    member2 - the second member
    
    Returns:
    
    the "distance" between the specified members