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1 | <?php |
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2 | |||
3 | namespace SMW; |
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4 | |||
5 | use Html; |
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6 | use SMW\MediaWiki\ByLanguageCollationMapper; |
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7 | use SMW\Query\Language\ConceptDescription; |
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8 | use SMWDataItem as DataItem; |
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9 | use SMWPageLister; |
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10 | |||
11 | /** |
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12 | * Special handling for relation/attribute description pages. |
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13 | * Some code based on CategoryPage.php |
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14 | * |
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15 | * Indicate class aliases in a way PHPStorm and Eclipse understand. |
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16 | * This is purely an IDE helper file, and is not loaded by the extension. |
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17 | * |
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18 | * @since 1.9 |
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19 | * |
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20 | * @ingroup SMW |
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21 | * |
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22 | * @license GNU GPL v2+ |
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23 | * @author: Markus Krötzsch |
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24 | * @author: mwjames |
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25 | */ |
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26 | |||
27 | /** |
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28 | * Implementation of MediaWiki's Article that shows additional information on |
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29 | * Concept: pages. Very similar to CategoryPage. |
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30 | * @ingroup SMW |
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31 | */ |
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32 | class ConceptPage extends \SMWOrderedListPage { |
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33 | |||
34 | /** |
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35 | * Initialize parameters to use a higher limit. This operation is very |
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36 | * similar to showing members of categories. |
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37 | */ |
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38 | protected function initParameters() { |
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39 | global $smwgConceptPagingLimit; |
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40 | $this->limit = $smwgConceptPagingLimit; |
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41 | return true; |
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42 | } |
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43 | |||
44 | /** |
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45 | * Returns the HTML which is added to $wgOut after the article text. |
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46 | * |
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47 | * @return string |
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48 | */ |
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49 | protected function getHtml() { |
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50 | global $smwgConceptPagingLimit, $wgRequest; |
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51 | |||
52 | if ( $this->limit > 0 ) { // limit==0: configuration setting to disable this completely |
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53 | $description = new ConceptDescription( $this->getDataItem() ); |
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54 | $query = SMWPageLister::getQuery( $description, $this->limit, $this->from, $this->until ); |
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55 | |||
56 | $query->setLimit( $wgRequest->getVal( 'limit', $smwgConceptPagingLimit ) ); |
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57 | $query->setOffset( $wgRequest->getVal( 'offset', '0' ) ); |
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58 | |||
59 | $queryResult = ApplicationFactory::getInstance()->getStore()->getQueryResult( $query ); |
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60 | |||
61 | $diWikiPages = $queryResult->getResults(); |
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62 | if ( $this->until !== '' ) { |
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63 | $diWikiPages = array_reverse( $diWikiPages ); |
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64 | } |
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65 | |||
66 | $errors = $queryResult->getErrors(); |
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67 | } else { |
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68 | $diWikiPages = array(); |
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69 | $errors = array(); |
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70 | } |
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71 | |||
72 | $pageLister = new SMWPageLister( $diWikiPages, null, $this->limit, $this->from, $this->until ); |
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73 | $this->mTitle->setFragment( '#SMWResults' ); // Make navigation point to the result list. |
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74 | |||
75 | $titleText = htmlspecialchars( $this->mTitle->getText() ); |
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76 | |||
77 | return Html::element( 'br', array( 'id' => 'smwfootbr' ) ) . |
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78 | Html::element( 'a', array( 'name' => 'SMWResults' ), null ) . |
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79 | Html::rawElement( 'div', array( 'id' => 'mw-pages'), |
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80 | $this->getCacheInformation() . |
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81 | Html::rawElement( 'h2', array(), $this->getContext()->msg( 'smw_concept_header', $titleText )->text() ) . |
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82 | $this->getNavigationLinks( 'smw_conceptarticlecount', $diWikiPages, $smwgConceptPagingLimit ) . |
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83 | smwfEncodeMessages( $errors ) . ' ' . |
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84 | $this->getFormattedColumns( $diWikiPages ) |
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85 | ); |
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86 | } |
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87 | |||
88 | private function getCacheInformation() { |
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89 | |||
90 | $concept = ApplicationFactory::getInstance()->getStore()->getConceptCacheStatus( $this->getDataItem() ); |
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91 | $cacheInformation = wfMessage( 'smw-concept-no-cache' )->text(); |
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92 | |||
93 | if ( $concept instanceof DIConcept && $concept->getCacheStatus() === 'full' ) { |
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94 | $cacheInformation = wfMessage( |
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95 | 'smw-concept-cache-count', |
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96 | $this->getContext()->getLanguage()->formatNum( $concept->getCacheCount() ), |
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97 | $this->getContext()->getLanguage()->timeanddate( $concept->getCacheDate() ) |
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98 | )->parse(); |
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99 | } |
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100 | |||
101 | return Html::rawElement( |
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102 | 'h2', |
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103 | array(), |
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104 | $this->getContext()->msg( 'smw-concept-cache-header' )->text() |
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105 | ) . $cacheInformation; |
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106 | } |
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107 | |||
108 | private function getFormattedColumns( array $diWikiPages ) { |
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109 | |||
110 | if ( $diWikiPages === array() ) { |
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111 | return ''; |
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112 | } |
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113 | |||
114 | $mwCollaboratorFactory = ApplicationFactory::getInstance()->newMwCollaboratorFactory(); |
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115 | $htmlColumnListRenderer = $mwCollaboratorFactory->newHtmlColumnListRenderer(); |
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116 | |||
117 | foreach ( $diWikiPages as $value ) { |
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118 | $dv = DataValueFactory::getInstance()->newDataValueByItem( $value ); |
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119 | $contentsByIndex[$this->getFirstLetterForCategory( $value )][] = $dv->getLongHTMLText( smwfGetLinker() ); |
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Coding Style
Comprehensibility
introduced
by
$contentsByIndex was never initialized. Although not strictly required by PHP, it is generally a good practice to add $contentsByIndex = array(); before regardless.
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code. Let’s take a look at an example: foreach ($collection as $item) {
$myArray['foo'] = $item->getFoo();
if ($item->hasBar()) {
$myArray['bar'] = $item->getBar();
}
// do something with $myArray
}
As you can see in this example, the array This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.
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120 | } |
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121 | |||
122 | $htmlColumnListRenderer->setColumnRTLDirectionalityState( |
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123 | $this->getContext()->getLanguage()->isRTL() |
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124 | ); |
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125 | |||
126 | $htmlColumnListRenderer->setColumnClass( 'smw-column-responsive' ); |
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127 | $htmlColumnListRenderer->setNumberOfColumns( 1 ); |
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128 | $htmlColumnListRenderer->addContentsByIndex( $contentsByIndex ); |
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The variable
$contentsByIndex does not seem to be defined for all execution paths leading up to this point.
If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) {
switch ($a) {
case 'foo':
$x = 1;
break;
case 'bar':
$x = 2;
break;
}
// $x is potentially undefined here.
echo $x;
}
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined. Available Fixes
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129 | |||
130 | return $htmlColumnListRenderer->getHtml(); |
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131 | } |
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132 | |||
133 | private function getFirstLetterForCategory( DataItem $dataItem ) { |
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134 | |||
135 | $sortKey = $dataItem->getSortKey(); |
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136 | |||
137 | if ( $dataItem->getDIType() == DataItem::TYPE_WIKIPAGE ) { |
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138 | $sortKey = ApplicationFactory::getInstance()->getStore()->getWikiPageSortKey( $dataItem ); |
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139 | |||
140 | } |
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141 | |||
142 | return ByLanguageCollationMapper::getInstance()->findFirstLetterForCategory( $sortKey ); |
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143 | } |
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144 | |||
145 | } |
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146 |
Instead of relying on
global
state, we recommend one of these alternatives:1. Pass all data via parameters
2. Create a class that maintains your state