java.lang.Object | +--org.apache.commons.collections.comparators.FixedOrderComparatorAll Implemented Interfaces:
static int | Behavior when comparing unknown Objects: unknown objects compare as after known Objects. |
static int | Behavior when comparing unknown Objects: unknown objects compare as before known Objects. |
static int | Behavior when comparing unknown Objects: unknown objects cause a IllegalArgumentException to be thrown. |
Constructs an empty FixedOrderComparator. |
FixedOrderComparator(Object[] items) Constructs a FixedOrderComparator which uses the order of the given array to compare the objects. |
FixedOrderComparator(List items) Constructs a FixedOrderComparator which uses the order of the given list to compare the objects. |
boolean | add(Object obj) Adds an item, which compares as after all items known to the Comparator. |
boolean | addAsEqual(Object existingObj, Object newObj) Adds a new item, which compares as equal to the given existing item. |
void | Checks to see whether the comparator is now locked against further changes. |
int | compare(Object obj1, Object obj2) Compares two objects according to the order of this Comparator. |
int | Gets the behavior for comparing unknown objects. |
boolean | isLocked() Returns true if modifications cannot be made to the FixedOrderComparator. |
void | setUnknownObjectBehavior(int unknownObjectBehavior) Sets the behavior for comparing unknown objects. |
public static final int UNKNOWN_AFTER
public static final int UNKNOWN_BEFORE
public static final int UNKNOWN_THROW_EXCEPTION
public FixedOrderComparator()
public FixedOrderComparator(List items)
- if the list is nullpublic FixedOrderComparator(Object[] items)
- if the array is nullpublic boolean add(Object obj)
- if a comparison has already been madepublic boolean addAsEqual(Object existingObj, Object newObj)
- if existingObject is not in the
Comparator's set of known objects.
- if a comparison has already been madeprotected void checkLocked()
- if the comparator is lockedpublic int compare(Object obj1, Object obj2)
- if o1 or o2 are not known
to this Comparator and an alternative behavior has not been set
via #setUnknownObjectBehavior(int).public int getUnknownObjectBehavior()
public boolean isLocked()
public void setUnknownObjectBehavior(int unknownObjectBehavior)
- if a comparison has been performed
- if the unknown flag is not valid