org.sandev.basics.util
Class ExistingIDOrderComparator

java.lang.Object
  org.sandev.basics.util.ExistingIDOrderComparator

All Implemented Interfaces:

java.util.Comparator

public class ExistingIDOrderComparator
extends java.lang.Object
implements java.util.Comparator

Compares two SandPersistMessages based on a prior existing ordering with new instances either less than or greater than all previous. So for example if you have a SandPersistMessage[] from a query, and you want to order it based on some ordering that you had previously defined, with any new stuff in front, then this is a way.

Field Summary

protected long[]	ids The previous uid order we should use for reference.
protected boolean	prepend If true, then anything not found in the ids will be considered less than anything that is found in the ids.

Constructor Summary

ExistingIDOrderComparator(long[] ids, boolean prepend)
Create a new comparator instance

Method Summary

int	compare(java.lang.Object obj1, java.lang.Object obj2) Compare two SandPersistMessage based on their relative uid placement within the array given for initialization.

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

Field Detail

ids

protected long[] ids

The previous uid order we should use for reference.

prepend

protected boolean prepend

If true, then anything not found in the ids will be considered less than anything that is found in the ids. This will result in them being sorted ahead of existing entries.

Constructor Detail

ExistingIDOrderComparator

public ExistingIDOrderComparator(long[] ids,
                                 boolean prepend)

Create a new comparator instance

Method Detail

compare

public int compare(java.lang.Object obj1,
                   java.lang.Object obj2)

Compare two SandPersistMessage based on their relative uid placement within the array given for initialization.

Specified by:

compare in interface java.util.Comparator