ElementComparator (Dataflow Library Distribution Project 8.2.0-176 API)

```
public interface ElementComparator
```
An index-based comparator for a TokenSequence. An ElementComparator always exists in the context of a TokenSequence; indexes refer to this sequence.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`EQUALS`	A value indicating the left value was equal to the right value
`static int`	`GREATER_THAN`	A value indicating the left value was greater than the right value
`static int`	`LESS_THAN`	A value indicating the left value was less than the right value

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`compareElements(int lhsIndex, int rhsIndex)`	Compares two sequence elements, specified by index.

- Field Detail
  - LESS_THAN
```
static final int LESS_THAN
```
    A value indicating the left value was less than the right value
    
    See Also:
    
    Constant Field Values
  - EQUALS
```
static final int EQUALS
```
    A value indicating the left value was equal to the right value
    
    See Also:
    
    Constant Field Values
  - GREATER_THAN
```
static final int GREATER_THAN
```
    A value indicating the left value was greater than the right value
    
    See Also:
    
    Constant Field Values
- Method Detail
  - compareElements
```
int compareElements(int lhsIndex,
                    int rhsIndex)
```
    Compares two sequence elements, specified by index.
    
    Parameters:
    
    lhsIndex - the index of the left hand element in the comparison
    
    rhsIndex - the index of the right hand element in the comparison
    
    Returns:
    
    0 if the values are equal, 1 if the left elements value is greater, -1 if the left elements value is lesser. A null value is greater than any other non-null; two null values compare as equal.