Comparer (saxon JavaDoc)

java.lang.Object
- com.icl.saxon.sort.Comparer

Direct Known Subclasses:

DescendingComparer, DoubleComparer, LowercaseFirstComparer, TextComparer, UppercaseFirstComparer
```
public abstract class Comparer
extends java.lang.Object
```
A Comparer used for comparing keys

Author:

Michael H. Kay

Constructor Summary

Constructors
Constructor Description

Comparer()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract int`	`compare(java.lang.Object a, java.lang.Object b)`	Compare two objects.
`Comparer`	`setDataType(java.lang.String dataTypeURI, java.lang.String dataTypeLocalName)`	Set data type.
`Comparer`	`setOrder(boolean isAscending)`	Set order.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Comparer
```
public Comparer()
```
- Method Detail
  - compare
```
public abstract int compare(java.lang.Object a,
                            java.lang.Object b)
```
    Compare two objects.
    
    Returns:
    
    <0 if a0 if a>b
    
    Throws:
    
    java.lang.ClassCastException - if the objects are of the wrong type for this Comparer
  - setDataType
```
public Comparer setDataType(java.lang.String dataTypeURI,
                            java.lang.String dataTypeLocalName)
```
    Set data type. The comparer has the option of returning a different comparer once it knows the data type
  - setOrder
```
public Comparer setOrder(boolean isAscending)
```
    Set order. The comparer has the option of returning a different comparer