WordPress at a glance
function is not described

wpsc_post_transition() WPSCache 1.0

No Hooks.

Return

Null. Nothing.

Usage

wpsc_post_transition( $new_status, $old_status, $post );

Code of wpsc_post_transition() WPSCache 1.7.1

<?php
function wpsc_post_transition( $new_status, $old_status, $post ) {

	$ptype = is_object( $post ) ? get_post_type_object( $post->post_type ) : null;
	if ( empty( $ptype ) || ! $ptype->public ) {
		return;
	}

	if ( $old_status === 'publish' && $new_status !== 'publish' ) { // post unpublished
		if ( ! function_exists( 'get_sample_permalink' ) ) {
			require_once( ABSPATH . 'wp-admin/includes/post.php' );
		}
		list( $permalink, $post_name ) = get_sample_permalink( $post );
		$post_url = str_replace( array( "%postname%", "%pagename%" ), $post->post_name, $permalink );
	}
	elseif ( $old_status !== 'publish' && $new_status === 'publish' ) { // post published
		wp_cache_post_edit( $post->ID );
		return;
	}

	if ( ! empty( $post_url ) ) {
		wp_cache_debug( 'wpsc_post_transition: deleting cache of post: ' . $post_url );
		wpsc_delete_url_cache( $post_url );
		wpsc_delete_post_archives( $post );
	}
}