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| 1 | <?php |
| 2 | |
| 3 | use Wikimedia\Rdbms\IDatabase; |
| 4 | use Wikimedia\Rdbms\IResultWrapper; |
| 5 | |
| 6 | class CargoQueryPage extends QueryPage { |
| 7 | /** @var CargoSQLQuery */ |
| 8 | private $sqlQuery; |
| 9 | /** @var array */ |
| 10 | private $displayParams; |
| 11 | /** @var string */ |
| 12 | private $format; |
| 13 | |
| 14 | public function __construct( $name = 'CargoQuery' ) { |
| 15 | parent::__construct( $name ); |
| 16 | |
| 17 | $req = $this->getRequest(); |
| 18 | $tablesStr = trim( $req->getVal( 'tables' ) ); |
| 19 | $fieldsStr = trim( $req->getVal( 'fields' ) ); |
| 20 | $whereStr = trim( $req->getVal( 'where' ) ); |
| 21 | $joinOnStr = trim( $req->getVal( 'join_on' ) ); |
| 22 | $groupByStr = trim( $req->getVal( 'group_by' ) ); |
| 23 | if ( substr( $groupByStr, -1, 1 ) == ',' ) { |
| 24 | $groupByStr = substr( $groupByStr, 0, -1 ); // Remove last comma for group by |
| 25 | } |
| 26 | $havingStr = trim( $req->getVal( 'having' ) ); |
| 27 | |
| 28 | $orderByStr = ""; |
| 29 | $orderByValues = $req->getArray( 'order_by' ); |
| 30 | $orderByOptions = $req->getArray( 'order_by_options' ); |
| 31 | if ( is_array( $orderByValues ) ) { |
| 32 | foreach ( $orderByValues as $i => $curOrderBy ) { |
| 33 | if ( $curOrderBy == '' ) { |
| 34 | continue; |
| 35 | } |
| 36 | $orderByStr .= $curOrderBy; |
| 37 | if ( $orderByOptions != null ) { |
| 38 | $orderByStr .= ' ' . $orderByOptions[$i]; |
| 39 | } |
| 40 | $orderByStr .= ','; |
| 41 | } |
| 42 | } |
| 43 | if ( substr( $orderByStr, -1, 1 ) == ',' ) { |
| 44 | $orderByStr = substr( $orderByStr, 0, -1 ); // Remove last comma for order by |
| 45 | } |
| 46 | $limitStr = trim( $req->getVal( 'limit' ) ); |
| 47 | $offsetStr = trim( $req->getVal( 'offset' ) ); |
| 48 | |
| 49 | $this->sqlQuery = CargoSQLQuery::newFromValues( $tablesStr, $fieldsStr, $whereStr, $joinOnStr, |
| 50 | $groupByStr, $havingStr, $orderByStr, $limitStr, $offsetStr ); |
| 51 | |
| 52 | $formatStr = trim( $req->getVal( 'format' ) ); |
| 53 | $this->format = $formatStr; |
| 54 | |
| 55 | // This is needed for both the results display and the |
| 56 | // navigation links. |
| 57 | $this->displayParams = []; |
| 58 | $queryStringValues = $this->getRequest()->getValues(); |
| 59 | foreach ( $queryStringValues as $key => $value ) { |
| 60 | // For some reason, getValues() turns all spaces |
| 61 | // into underlines. |
| 62 | $paramName = str_replace( '_', ' ', $key ); |
| 63 | if ( !in_array( $paramName, |
| 64 | [ 'title', 'tables', 'fields', 'join on', 'order by', 'group by', 'having', 'format', |
| 65 | 'offset' ] ) ) { |
| 66 | $this->displayParams[$paramName] = $value; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | // 'dynamic table' makes its own use of 'order by'. |
| 71 | if ( $this->format == 'dynamic table' ) { |
| 72 | $this->displayParams['order by'] = $orderByStr; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | public function isExpensive() { |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | public function isSyndicated() { |
| 81 | return false; |
| 82 | } |
| 83 | |
| 84 | // @todo - declare a getPageHeader() function, to show some |
| 85 | // information about the query? |
| 86 | |
| 87 | /** @inheritDoc */ |
| 88 | public function getRecacheDB() { |
| 89 | return CargoUtils::getDB(); |
| 90 | } |
| 91 | |
| 92 | public function getQueryInfo() { |
| 93 | $selectOptions = []; |
| 94 | if ( $this->sqlQuery->mGroupByStr != '' ) { |
| 95 | $selectOptions['GROUP BY'] = $this->sqlQuery->mGroupByStr; |
| 96 | } |
| 97 | if ( $this->sqlQuery->mHavingStr != '' ) { |
| 98 | $selectOptions['HAVING'] = $this->sqlQuery->mHavingStr; |
| 99 | } |
| 100 | |
| 101 | // "order by" is handled elsewhere, in getOrderFields(). |
| 102 | |
| 103 | // Field aliases need to have quotes placed around them |
| 104 | // before running the query. |
| 105 | $cdb = CargoUtils::getDB(); |
| 106 | $aliasedFieldNames = []; |
| 107 | foreach ( $this->sqlQuery->mAliasedFieldNames as $alias => $fieldName ) { |
| 108 | // If it's really a field name, add quotes around it. |
| 109 | if ( strpos( $fieldName, '(' ) === false && strpos( $fieldName, '.' ) === false && |
| 110 | !$cdb->isQuotedIdentifier( $fieldName ) && !CargoUtils::isSQLStringLiteral( $fieldName ) ) { |
| 111 | $fieldName = $cdb->addIdentifierQuotes( $fieldName ); |
| 112 | } |
| 113 | $aliasedFieldNames[$alias] = $fieldName; |
| 114 | } |
| 115 | |
| 116 | $queryInfo = [ |
| 117 | 'tables' => $this->sqlQuery->mAliasedTableNames, |
| 118 | 'fields' => $aliasedFieldNames, |
| 119 | 'options' => $selectOptions |
| 120 | ]; |
| 121 | if ( $this->sqlQuery->mWhereStr != '' ) { |
| 122 | $queryInfo['conds'] = $this->sqlQuery->mWhereStr; |
| 123 | } |
| 124 | if ( !empty( $this->sqlQuery->mJoinConds ) ) { |
| 125 | $queryInfo['join_conds'] = $this->sqlQuery->mJoinConds; |
| 126 | } |
| 127 | return $queryInfo; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Returns an associative array that will be encoded and added to the |
| 132 | * paging links |
| 133 | * @return array |
| 134 | */ |
| 135 | public function linkParameters() { |
| 136 | $possibleParams = [ |
| 137 | 'tables', 'fields', 'where', 'join_on', 'order_by', 'group_by', 'having', 'format' |
| 138 | ]; |
| 139 | $linkParams = []; |
| 140 | $req = $this->getRequest(); |
| 141 | foreach ( $possibleParams as $possibleParam ) { |
| 142 | if ( $req->getCheck( $possibleParam ) ) { |
| 143 | $linkParams[$possibleParam] = $req->getVal( $possibleParam ); |
| 144 | } elseif ( $req->getArray( $possibleParam ) ) { |
| 145 | $linkParams[$possibleParam] = $req->getArray( $possibleParam ); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | foreach ( $this->displayParams as $key => $value ) { |
| 150 | $linkParams[$key] = $value; |
| 151 | } |
| 152 | |
| 153 | return $linkParams; |
| 154 | } |
| 155 | |
| 156 | public function getOrderFields() { |
| 157 | return $this->sqlQuery->mOrderBy; |
| 158 | } |
| 159 | |
| 160 | public function sortDescending() { |
| 161 | return false; |
| 162 | } |
| 163 | |
| 164 | public function formatResult( $skin, $result ) { |
| 165 | // This function needs to be declared, but it is not called. |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Format and output report results using the given information plus |
| 170 | * OutputPage |
| 171 | * |
| 172 | * @param OutputPage $out OutputPage to print to |
| 173 | * @param Skin $skin User skin to use |
| 174 | * @param IDatabase $dbr Database (read) connection to use |
| 175 | * @param IResultWrapper $res Result pointer |
| 176 | * @param int $num Number of available result rows |
| 177 | * @param int $offset Paging offset |
| 178 | */ |
| 179 | public function outputResults( $out, $skin, $dbr, $res, $num, $offset ) { |
| 180 | $valuesTable = []; |
| 181 | for ( $i = 0; $i < $num && $row = $res->fetchObject(); $i++ ) { |
| 182 | $valuesTable[] = get_object_vars( $row ); |
| 183 | } |
| 184 | $queryDisplayer = CargoQueryDisplayer::newFromSQLQuery( $this->sqlQuery ); |
| 185 | $queryDisplayer->mFieldDescriptions = $this->sqlQuery->mFieldDescriptions; |
| 186 | $queryDisplayer->mFormat = $this->format; |
| 187 | $formatter = $queryDisplayer->getFormatter( $out ); |
| 188 | |
| 189 | if ( $formatter->isDeferred() ) { |
| 190 | $text = $formatter->queryAndDisplay( [ $this->sqlQuery ], $this->displayParams ); |
| 191 | $out->addHTML( $text ); |
| 192 | return; |
| 193 | } |
| 194 | |
| 195 | $this->displayParams['offset'] = $offset; |
| 196 | $queryDisplayer->mDisplayParams = $this->displayParams; |
| 197 | $html = $queryDisplayer->displayQueryResults( $formatter, $valuesTable ); |
| 198 | if ( $this->format === 'template' ) { |
| 199 | $out->addWikiTextAsContent( $html ); |
| 200 | } else { |
| 201 | $out->addHTML( $html ); |
| 202 | } |
| 203 | } |
| 204 | } |