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Add access method for new BooleanComparator 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@130947 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Stephen Colebourne 2003-01-15 20:37:22 +00:00
parent 993d3b50e2
commit 60aa1d0752
1 changed files with 17 additions and 0 deletions
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17
src/java/org/apache/commons/collections/ComparatorUtils.java
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@ -56,6 +56,7 @@ package org.apache.commons.collections;
import java.util.Collection; import java.util.Collection;
import java.util.Comparator; import java.util.Comparator;
import org.apache.commons.collections.comparators.BooleanComparator;
import org.apache.commons.collections.comparators.ComparableComparator; import org.apache.commons.collections.comparators.ComparableComparator;
import org.apache.commons.collections.comparators.ComparatorChain; import org.apache.commons.collections.comparators.ComparatorChain;
import org.apache.commons.collections.comparators.NullComparator; import org.apache.commons.collections.comparators.NullComparator;
@ -171,6 +172,22 @@ public class ComparatorUtils {
return new ReverseComparator(comparator); return new ReverseComparator(comparator);
} }
/**
* Gets a Comparator that can sort Boolean objects.
* <p>
* The parameter specifies whether true or false is sorted first.
* <p>
* The comparator throws NullPointerException if a null value is compared.
*
* @param trueFirst when <code>true</code>, sort
* <code>true</code> {@link Boolean}s before
* <code>false</code> {@link Boolean}s.
* @return a comparator that sorts booleans
*/
public static Comparator booleanComparator(boolean trueFirst) {
return BooleanComparator.getBooleanComparator(trueFirst);
}
/** /**
* Gets a Comparator that controls the comparison of <code>null</code> values. * Gets a Comparator that controls the comparison of <code>null</code> values.
* <p> * <p>