de.julielab.jcore.utility.index

Class Comparators

java.lang.Object

de.julielab.jcore.utility.index.Comparators

public class Comparators
extends Object

This class offers some commonly used comparators on annotations.

Author:

faessler

Constructor Summary

Constructors

Constructor and Description
Comparators()

Method Summary

Modifier and Type	Method and Description
static <T extends org.apache.uima.jcas.tcas.Annotation> Comparator<T>	beginOffsetComparator()
static <T extends org.apache.uima.jcas.tcas.Annotation> Comparator<T>	endOffsetComparator()
static <T extends org.apache.uima.jcas.tcas.Annotation> Comparator<T>	exactOffsetMatchComparator() Compares annotations strictly by their offsets.
static Comparator<Long>	longOverlapComparator()
static <T extends org.apache.uima.jcas.tcas.Annotation> Comparator<T>	overlapComparator() Compares annotations for any kind of overlapping.

Methods inherited from class java.lang.Object

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

Constructor Detail

Comparators

public Comparators()

Method Detail

exactOffsetMatchComparator

public static <T extends org.apache.uima.jcas.tcas.Annotation> Comparator<T> exactOffsetMatchComparator()

Compares annotations strictly by their offsets. Two annotations are equal if both begin and end offsets are equal. If not, they are sorted by begin offset or, when those are equal, be end offset.

Returns:

The comparison value.

overlapComparator

public static <T extends org.apache.uima.jcas.tcas.Annotation> Comparator<T> overlapComparator()

Compares annotations for any kind of overlapping. As long as two annotations overlap for at least a single position, they are deemed "equal" by this comparator. Otherwise, they are sorted by begin offset.

Returns:

0 if annotations overlap, the start offset difference otherwise.

beginOffsetComparator

public static <T extends org.apache.uima.jcas.tcas.Annotation> Comparator<T> beginOffsetComparator()

endOffsetComparator

public static <T extends org.apache.uima.jcas.tcas.Annotation> Comparator<T> endOffsetComparator()

longOverlapComparator

public static Comparator<Long> longOverlapComparator()