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Interface SortOrder

All Known Implementing Classes:

BasicSortOrder

public interface SortOrder

A sortorder specifies sorting of a single field.

This corresponds to use of ORDER BY in SQL SELECT-syntax.

Since:

MMBase-1.7

Version:

$Id: SortOrder.java,v 1.4 2005/05/26 07:50:47 michiel Exp $

Author:

Rob van Maris

Field Summary

static int	ORDER_ASCENDING Order for ascending sort order.
static int	ORDER_DESCENDING Order for descending sort order.
static String[]	ORDER_DESCRIPTIONS Order descriptions corresponding to the order values: ORDER_ASCENDING, and ORDER_DESCENDING

Method Summary

boolean	equals(Object obj) Compares this sortorder to the specified object.
int	getDirection() Gets the sort direction.
StepField	getField() Gets the associated field.
int	hashCode()
boolean	isCaseSensitive() Whether sorting must happen case sensitivily.
String	toString() Returns a string representation of this SortOrder.

Field Detail

ORDER_ASCENDING

public static final int ORDER_ASCENDING

Order for ascending sort order.

See Also:

Constant Field Values

ORDER_DESCENDING

public static final int ORDER_DESCENDING

Order for descending sort order.

See Also:

Constant Field Values

ORDER_DESCRIPTIONS

public static final String[] ORDER_DESCRIPTIONS

Order descriptions corresponding to the order values: ORDER_ASCENDING, and ORDER_DESCENDING

Method Detail

getField

public StepField getField()

Gets the associated field.

This corresponds to a fieldname in a "ORDER BY" clause in SQL SELECT-syntax.

getDirection

public int getDirection()

Gets the sort direction. This is be either ORDER_ASCENDING or ORDER_DESCENDING.

This corresponds to the use of ASC and DESC in SQL SELECT-syntax.

isCaseSensitive

public boolean isCaseSensitive()

Whether sorting must happen case sensitivily. If not, normally something like ordering on the uppercased field will happen.

Since:

MMBase-1.8

equals

public boolean equals(Object obj)

Compares this sortorder to the specified object. The result is true if and only if the argument is a non-null SortOrder object associated with the same field, using the same sort direction.

Parameters:

obj - The object to compare with.

Returns:

true if the objects are equal, false otherwise.

hashCode

public int hashCode()

toString

public String toString()

Returns a string representation of this SortOrder. The string representation has the form "SortOrder(field:<field>, dir:<dir>)" where

• <field> is the field alias returned by getField().getAlias()
• <dir> is the direction returned by getDirection()

Returns:

A string representation of this SortOrder.