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<?php
namespace SMW\Query;
use SMW\ProcessingErrorMsgHandler;
use SMWQuery as Query;
/**
* @license GNU GPL v2+
* @since 2.0
*
* @author mwjames
* @author Markus Krötzsch
*/
class DebugFormatter {
const JSON_FORMAT = 'json';
/**
* @var boolean
*/
private static $explainFormat = '';
/**
* @since 3.0
*
* @param string $explainFormat
*/
public static function setExplainFormat( $explainFormat ) {
if ( $explainFormat === self::JSON_FORMAT ) {
self::$explainFormat = $explainFormat;
}
}
/**
* @since 3.0
*
* @param string $type
*
* @return string
*/
public static function getFormat( $type ) {
$format = '';
// Use a more expressive explain output
// https://dev.mysql.com/doc/refman/5.6/en/explain.html
// https://mariadb.com/kb/en/mariadb/explain-formatjson-in-mysql/
if ( $type === 'mysql' && self::$explainFormat === self::JSON_FORMAT ) {
$format = 'FORMAT=json';
}
return $format;
}
/**
* Generate textual debug output that shows an arbitrary list of informative
* fields. Used for formatting query debug output.
*
* @note All strings given must be usable and safe in wiki and HTML
* contexts.
*
* @param $storeName string name of the storage backend for which this is generated
* @param $entries array of name => value of informative entries to display
* @param $query SMWQuery or null, if given add basic data about this query as well
*
* @return string
*/
public static function getStringFrom( $storeName, array $entries, Query $query = null ) {
if ( $query instanceof Query ) {
$preEntries = [];
$preEntries['ASK Query'] = '<div class="smwpre">' . str_replace( '[', '[', $query->getDescription()->getQueryString() ) . '</div>';
$entries = array_merge( $preEntries, $entries );
$entries['Query Metrics'] = 'Query-Size:' . $query->getDescription()->getSize() . '<br />' .
'Query-Depth:' . $query->getDescription()->getDepth();
$errors = '';
$queryErrors = ProcessingErrorMsgHandler::normalizeAndDecodeMessages(
$query->getErrors()
);
foreach ( $queryErrors as $error ) {
$errors .= $error . '<br />';
}
if ( $errors === '' ) {
$errors = 'None';
}
$entries['Errors and Warnings'] = $errors;
}
$result = '<div class="smw-debug" style="border: 5px dotted #ffcc00; background: #FFF0BD; padding: 20px; margin-bottom: 10px;">' .
"<div class='smw-column-header'><big>$storeName debug output</big></div>";
foreach ( $entries as $header => $information ) {
$result .= "<div class='smw-column-header'>$header</div>";
if ( $information !== '' ) {
$result .= "$information";
}
}
$result .= '</div>';
return $result;
}
/**
* @since 2.5
*
* @param string $type
* @param array $rows
*
* @return string
*/
public static function prettifyExplain( $type, $res ) {
$output = '';
// https://dev.mysql.com/doc/refman/5.0/en/explain-output.html
if ( $type === 'mysql' ) {
$output .= '<div class="smwpre" style="word-break:normal;">' .
'<table class="" style="border-spacing: 5px;"><tr>' .
'<th style="text-align: left;">ID</th>'.
'<th style="text-align: left;">select_type</th>'.
'<th style="text-align: left;">table</th>'.
'<th style="text-align: left;">type</th>'.
'<th style="text-align: left;">possible_keys</th>'.
'<th style="text-align: left;">key</th>'.
'<th style="text-align: left;">key_len</th>'.
'<th style="text-align: left;">ref</th>'.
'<th style="text-align: left;">rows</th>'.
'<th style="text-align: left;">Extra</th></tr>';
foreach ( $res as $row ) {
if ( isset( $row->EXPLAIN ) ) {
return '<div class="smwpre">' . $row->EXPLAIN . '</div>';
}
$output .= "<tr><td>" . $row->id .
"</td><td>" . $row->select_type .
"</td><td>" . $row->table .
"</td><td>" . $row->type .
"</td><td>" . $row->possible_keys .
"</td><td>" . $row->key .
"</td><td>" . $row->key_len .
"</td><td>" . $row->ref .
"</td><td>" . $row->rows .
"</td><td>" . $row->Extra . "</td></tr>";
}
$output .= '</table></div>';
}
if ( $type === 'postgres' ) {
$output .= '<div class="smwpre">';
foreach ( $res as $row ) {
foreach ( $row as $key => $value ) {
$output .= str_replace( [ ' ', '->' ], [ ' ', '└── ' ], $value ) .'<br>';
}
}
$output .= '</div>';
}
// SQlite doesn't support this
if ( $type === 'sqlite' ) {
$output .= 'Not supported.';
}
return $output;
}
/**
* @since 2.5
*
* @param string $sparql
*
* @return string
*/
public static function prettifySparql( $sparql ) {
$sparql = str_replace(
[
'[',
':',
' ',
'<',
'>'
],
[
'[',
':',
' ',
'<',
'>'
],
$sparql
);
return '<div class="smwpre">' . $sparql . '</div>';
}
/**
* @since 2.5
*
* @param string $sql
* @param string $alias
*
* @return string
*/
public static function prettifySql( $sql, $alias ) {
$sql = str_replace(
[
"SELECT DISTINCT",
"FROM",
"INNER JOIN",
"LEFT OUTER JOIN",
"LEFT JOIN",
"RIGHT JOIN",
"WHERE",
"ORDER BY",
"GROUP BY",
"LIMIT",
"OFFSET",
"AND $alias.smw_",
",$alias.smw_",
"AND (",
"))",
"(("
],
[
"SELECT DISTINCT<br> ",
"<br>FROM<br> ",
"<br>INNER JOIN<br> ",
"<br>LEFT OUTER JOIN<br> ",
"<br>LEFT JOIN<br> ",
"<br>RIGHT JOIN<br> ",
"<br>WHERE<br> ",
"<br>ORDER BY<br> ",
"<br>GROUP BY<br> ",
"<br>LIMIT<br> ",
"<br>OFFSET<br> ",
"<br> AND $alias.smw_",
",<br> $alias.smw_",
"<br> AND (",
")<br> )",
"(<br> ("
],
$sql
);
return '<div class="smwpre">' . $sql . '</div>';
}
}
|
