com.wewebu.ow.server.ecm
Class OwStandardObjectCollection.OwObjectCollectionComparator
java.lang.Object
com.wewebu.ow.server.ecm.OwStandardObjectCollection.OwObjectCollectionComparator
- All Implemented Interfaces:
- Comparator
- Enclosing class:
- OwStandardObjectCollection
protected class OwStandardObjectCollection.OwObjectCollectionComparator
- extends Object
- implements Comparator
sort operator used in
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
OwStandardObjectCollection.OwObjectCollectionComparator
public OwStandardObjectCollection.OwObjectCollectionComparator(OwSort.OwSortCriteria sortCriteria_p)
- construct a List comparator with the sort criteria
- Parameters:
sortCriteria_p
- OwSort object with a list of criteria
compare
public int compare(Object o1_p,
Object o2_p)
- Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.
The implementor must ensure that sgn(compare(x, y)) == -sgn(compare(y, x)) for all x and y. (This implies that compare(x, y) must throw an exception if and only if compare(y, x) throws an exception.)
The implementor must also ensure that the relation is transitive: ((compare(x, y)>0) && (compare(y, z)>0)) implies compare(x, z)>0.
Finally, the implementer must ensure that compare(x, y)==0 implies that sgn(compare(x, z))==sgn(compare(y, z)) for all z.
It is generally the case, but not strictly required that (compare(x, y)==0) == (x.equals(y)). Generally speaking, any comparator that violates this condition should clearly indicate this fact. The recommended language is "Note: this comparator imposes orderings that are inconsistent with equals."
- Specified by:
compare
in interface Comparator
- Parameters:
o1_p
- the first object to be compared.o2_p
- the second object to be compared
- Returns:
- a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.
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