org.geotools.feature
Class FeatureComparators

Object
  extended by FeatureComparators

public final class FeatureComparators
extends Object

A utility class for creating simple Comparators for Features.

Author:
Ian Schneider
Module:
modules/library/main (gt-main.jar)

Nested Class Summary
static class FeatureComparators.Index
          A Comparator which performs the comparison on attributes at a given index.
static class FeatureComparators.Name
          A Comparator which performs the comparison on attributes with a given name.
 
Field Summary
static Comparator BY_ID
          A utility comparator for comparison by id.
 
Method Summary
static Comparator byAttributeIndex(int idx)
          Create a Comparator which compares Features by the attribute at the given index.
static Comparator byAttributeName(String name)
          Create a Comparator which compares Features by the attribute found at the given path.
 
Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

BY_ID

public static final Comparator BY_ID
A utility comparator for comparison by id.

Method Detail

byAttributeIndex

public static Comparator byAttributeIndex(int idx)
Create a Comparator which compares Features by the attribute at the given index. The attribute at the index MUST be Comparable. This will probably not work for heterogenous collections, UNLESS the classes at the given index are the same.

Parameters:
idx - The index to look up attributes at.
Returns:
A new Comparator.

byAttributeName

public static Comparator byAttributeName(String name)
Create a Comparator which compares Features by the attribute found at the given path. The attribute found MUST be Comparable. This will probably not work for heterogenous collections, UNLESS the attributes found are the same class.

Parameters:
name - The xpath to use while comparing.
Returns:
A new Comparator.


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