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package org.jooq;

import org.jetbrains.annotations.NotNull;



A sort specification.

The SQL ORDER BY clause accepts expressions based on Field, which may be enhanced by ASC or DESC
as well as NULLS FIRST or NULLS LAST.

Example:

// Assuming import static org.jooq.impl.DSL.*;
using(configuration)
   .select(ACTOR.FIRST_NAME, ACTOR.LAST_NAME)
   .from(ACTOR)
   .orderBy(ACTOR.LAST_UPDATE.desc().nullsLast())
   .fetch();

 Instances can be created using Field.asc(), Field.desc() and related methods. 
Author:
Lukas Eder
Type parameters:
<T> – The field type
See Also:
Field.asc()
Field.desc()/**
 * A sort specification.
 * <p>
 * The SQL <code>ORDER BY</code> clause accepts expressions based on
 * {@link Field}, which may be enhanced by <code>ASC</code> or <code>DESC</code>
 * as well as <code>NULLS FIRST</code> or <code>NULLS LAST</code>.
 * <p>
 * <strong>Example:</strong>
 * <p>
 * <code><pre>
 * // Assuming import static org.jooq.impl.DSL.*;
 *
 * using(configuration)
 *    .select(ACTOR.FIRST_NAME, ACTOR.LAST_NAME)
 *    .from(ACTOR)
 *    .orderBy(ACTOR.LAST_UPDATE.desc().nullsLast())
 *    .fetch();
 * </pre></code>
 * <p>
 * Instances can be created using {@link Field#asc()}, {@link Field#desc()} and
 * related methods.
 *
 * @param <T> The field type
 * @author Lukas Eder
 * @see Field#asc()
 * @see Field#desc()
 */
public interface SortField<T> extends OrderField<T> {

    
The name of this sort field
/**
     * The name of this sort field
     */
    @NotNull
    String getName();

    
Get the underlying sort order of this sort field
/**
     * Get the underlying sort order of this sort field
     */
    @NotNull
    SortOrder getOrder();

    
Add a NULLS FIRST clause to this sort field
/**
     * Add a <code>NULLS FIRST</code> clause to this sort field
     */
    @NotNull
    @Support
    SortField<T> nullsFirst();

    
Add a NULLS LAST clause to this sort field
/**
     * Add a <code>NULLS LAST</code> clause to this sort field
     */
    @NotNull
    @Support
    SortField<T> nullsLast();

}