com.northconcepts.datapipeline.core

Class ValueNodeComparator

java.lang.Object

com.northconcepts.datapipeline.core.ValueNodeComparator

All Implemented Interfaces:

Cloneable, Comparator<ValueNode<?>>

public class ValueNodeComparator
extends Object
implements Comparator<ValueNode<?>>, Cloneable

A comparator for ValueNode instances that supports sorting and comparing records, arrays, and single values. This comparator delegates to the natural comparison logic defined in ValueNode's compareTo method.

See Also:

ValueNode, ArrayValue.sort(), ArrayValue.sort(Comparator)

Field Summary

Fields

Modifier and Type	Field and Description
static ValueNodeComparator	DEFAULT A default instance of ValueNodeComparator that can be reused.

Constructor Summary

Constructors

Constructor and Description
ValueNodeComparator() Creates a new ValueNodeComparator.

Method Summary

Modifier and Type	Method and Description
Object	clone()
int	compare(ValueNode valueNode1, ValueNode valueNode2) Compares two ValueNode instances for ordering.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final ValueNodeComparator DEFAULT

A default instance of ValueNodeComparator that can be reused.

Constructor Detail

ValueNodeComparator

public ValueNodeComparator()

Creates a new ValueNodeComparator.

Method Detail

clone

public Object clone()

Overrides:

clone in class Object

compare

public int compare(ValueNode valueNode1,
                   ValueNode valueNode2)

Compares two ValueNode instances for ordering. Null values are sorted before non-null values.

Specified by:

compare in interface Comparator<ValueNode<?>>

Parameters:

valueNode1 - the first ValueNode to compare

valueNode2 - the second ValueNode to compare

Returns:

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second