org.apache.commons.codec
Class StringEncoderComparator
- java.lang.Object
- org.apache.commons.codec.StringEncoderComparator
- All Implemented Interfaces:
- Comparator
public class StringEncoderComparator extends Object implements Comparator
Compares Strings using aStringEncoder
. This comparator is used to sort Strings by an encoding scheme such as Soundex, Metaphone, etc. This class can come in handy if one need to sort Strings by an encoded form of a name such as Soundex.This class is immutable and thread-safe.
Constructor Summary
Constructors Constructor and Description StringEncoderComparator()
Deprecated.Creating an instance without aStringEncoder
leads to aNullPointerException
. Will be removed in 2.0.StringEncoderComparator(StringEncoder stringEncoder)
Constructs a new instance with the given algorithm.
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description int
compare(Object o1, Object o2)
Compares two strings based not on the strings themselves, but on an encoding of the two strings using the StringEncoder this Comparator was created with.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
comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong
Constructor Detail
StringEncoderComparator
@Deprecated public StringEncoderComparator()
Deprecated. Creating an instance without aStringEncoder
leads to aNullPointerException
. Will be removed in 2.0.Constructs a new instance.
StringEncoderComparator
public StringEncoderComparator(StringEncoder stringEncoder)
Constructs a new instance with the given algorithm.- Parameters:
stringEncoder
- the StringEncoder used for comparisons.
Method Detail
compare
public int compare(Object o1, Object o2)
Compares two strings based not on the strings themselves, but on an encoding of the two strings using the StringEncoder this Comparator was created with. If anEncoderException
is encountered, return0
.- Specified by:
compare
in interfaceComparator
- Parameters:
o1
- the object to compareo2
- the object to compare to- Returns:
- the Comparable.compareTo() return code or 0 if an encoding error was caught.
- See Also:
Comparable
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