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Split all shared taxonomy terms on upgrade to 4.3. 

Dear Shared Terms, Welcome to Splitsville. Population: You.

See #30261.

git-svn-id: https://develop.svn.wordpress.org/trunk@32814 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Boone Gorges 2015-06-17 01:52:46 +00:00
parent 4649b2345d
commit f9ae6b826a
2 changed files with 70 additions and 2 deletions
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70
src/wp-admin/includes/upgrade.php
View File

@ -534,7 +534,7 @@ function upgrade_all() {
// Don't harsh my mellow. upgrade_430() must be called before
// upgrade_420() to catch bad comments prior to any auto-expansion of
// MySQL column widths.
if ( $wp_current_db_version < 32364 )
if ( $wp_current_db_version < 32814 )
upgrade_430();
if ( $wp_current_db_version < 31351 )
@ -1559,6 +1559,10 @@ function upgrade_430() {
wp_delete_comment( $comment->comment_ID, true );
}
}
if ( $wp_current_db_version < 32814 ) {
split_all_shared_terms();
}
}
/**
@ -1850,6 +1854,70 @@ function maybe_convert_table_to_utf8mb4( $table ) {
return $wpdb->query( "ALTER TABLE $table CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci" );
}
/**
* Split all shared taxonomy terms.
*
* @since 4.3.0
*/
function split_all_shared_terms() {
global $wpdb;
// Get a list of shared terms (those with more than one associated row in term_taxonomy).
$shared_terms = $wpdb->get_results(
"SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt
LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
GROUP BY t.term_id
HAVING term_tt_count > 1"
);
// Rekey shared term array for faster lookups.
$_shared_terms = array();
foreach ( $shared_terms as $shared_term ) {
$term_id = intval( $shared_term->term_id );
$_shared_terms[ $term_id ] = $shared_term;
}
$shared_terms = $_shared_terms;
// Get term taxonomy data for all shared terms.
$shared_term_ids = implode( ',', array_keys( $shared_terms ) );
$shared_tts = $wpdb->get_results( "SELECT * FROM {$wpdb->term_taxonomy} WHERE `term_id` IN ({$shared_term_ids})" );
// Split term data recording is slow, so we do it just once, outside the loop.
$suspend = wp_suspend_cache_invalidation( true );
$split_term_data = get_option( '_split_terms', array() );
$skipped_first_term = $taxonomies = array();
foreach ( $shared_tts as $shared_tt ) {
$term_id = intval( $shared_tt->term_id );
// Don't split the first tt belonging to a given term_id.
if ( ! isset( $skipped_first_term[ $term_id ] ) ) {
$skipped_first_term[ $term_id ] = 1;
continue;
}
if ( ! isset( $split_term_data[ $term_id ] ) ) {
$split_term_data[ $term_id ] = array();
}
// Keep track of taxonomies whose hierarchies need flushing.
if ( ! isset( $taxonomies[ $shared_tt->taxonomy ] ) ) {
$taxonomies[ $shared_tt->taxonomy ] = 1;
}
// Split the term.
$split_term_data[ $term_id ][ $shared_tt->taxonomy ] = _split_shared_term( $shared_terms[ $term_id ], $shared_tt, false );
}
// Rebuild the cached hierarchy for each affected taxonomy.
foreach ( array_keys( $taxonomies ) as $tax ) {
delete_option( "{$tax}_children" );
_get_term_hierarchy( $tax );
}
wp_suspend_cache_invalidation( $suspend );
update_option( '_split_terms', $split_term_data );
}
/**
* Retrieve all options as it was for 1.2.
*

2
src/wp-includes/version.php
View File

@ -11,7 +11,7 @@ $wp_version = '4.3-alpha-32280-src';
*
* @global int $wp_db_version
*/
$wp_db_version = 32453;
$wp_db_version = 32814;
/**
* Holds the TinyMCE version