www.pudn.com > dataswap0616.rar > ColumnComparator.java

package com.gemt.dataswap.dataset; 
 
import java.util.Comparator; 
 
public class ColumnComparator implements Comparator 
{ 
	public int compare(Object o1, Object o2) 
	{ 
		if(o1 != null && o2 != null) { 
			Column col1 = (Column)o1; 
			Column col2 = (Column)o2; 
			return (col1.getFieldName() == null ? col1.getColumnName() : col1.getFieldName()).compareTo( 
				col2.getFieldName() == null ? col2.getColumnName() : col2.getFieldName()); 
		} 
		return 0; 
	} 
}