org.rivetlogic.scar.comparator
Class FieldComparator

java.lang.Object
  org.rivetlogic.scar.comparator.FieldComparator

All Implemented Interfaces:

java.util.Comparator<java.lang.Object>

public class FieldComparator
extends java.lang.Object
implements java.util.Comparator<java.lang.Object>

Comparator that uses Reflection to compare by field names. The name of the field is passed as a Java String.

Author:

Rivet Logic Corporation

Constructor Summary

FieldComparator(java.lang.String sortBy, boolean ascending)

Method Summary

int	compare(java.lang.Object a, java.lang.Object b)
java.lang.String	getSortBy()
protected static java.lang.reflect.Field	getSortingField(java.lang.Object a, java.lang.String fieldName)
protected static java.lang.reflect.Method	getSortingMethod(java.lang.Object a, java.lang.String fieldName)
protected java.lang.Object	getSortingObject(java.lang.Object obj)
boolean	isAscending()
void	setAscending(boolean ascending)
void	setSortBy(java.lang.String sortBy)

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

equals

Constructor Detail

FieldComparator

public FieldComparator(java.lang.String sortBy,
                       boolean ascending)

Method Detail

compare

public int compare(java.lang.Object a,
                   java.lang.Object b)

Specified by:

compare in interface java.util.Comparator<java.lang.Object>

getSortingObject

protected java.lang.Object getSortingObject(java.lang.Object obj)

getSortingField

protected static java.lang.reflect.Field getSortingField(java.lang.Object a,
                                                         java.lang.String fieldName)
                                                  throws java.lang.SecurityException,
                                                         java.lang.NoSuchFieldException

Throws:

java.lang.SecurityException

java.lang.NoSuchFieldException

getSortingMethod

protected static java.lang.reflect.Method getSortingMethod(java.lang.Object a,
                                                           java.lang.String fieldName)
                                                    throws java.lang.SecurityException,
                                                           java.lang.NoSuchMethodException

Throws:

java.lang.SecurityException

java.lang.NoSuchMethodException

getSortBy

public java.lang.String getSortBy()

setSortBy

public void setSortBy(java.lang.String sortBy)

isAscending

public boolean isAscending()

setAscending

public void setAscending(boolean ascending)