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<?php |
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namespace Maps\SemanticMW\ValueDescriptions; |
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use DatabaseBase; |
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use SMW\DataValueFactory; |
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use SMW\Query\Language\ValueDescription; |
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use SMWDIGeoCoord; |
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/** |
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* Description of one data value of type Geographical Coordinates. |
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* |
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* @author Jeroen De Dauw |
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*/ |
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class CoordinateDescription extends ValueDescription { |
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/** |
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* @see SMWDescription::getQueryString |
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* |
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* @since 0.6 |
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* |
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* @param boolean $asValue |
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* |
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* @return string |
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*/ |
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public function getQueryString( $asValue = false ) { |
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$queryString = DataValueFactory::newDataItemValue( $this->getDataItem(), $this->getProperty() )->getWikiValue(); |
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return $asValue ? $queryString : "[[$queryString]]"; |
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} |
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/** |
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* @see SMWDescription::getSQLCondition |
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* |
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* FIXME: store specific code should be in the store component |
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* |
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* @since 0.6 |
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* |
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* @param string $tableName |
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* @param array $fieldNames |
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* @param DatabaseBase $dbs |
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* |
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* @return string|false |
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*/ |
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public function getSQLCondition( $tableName, array $fieldNames, DatabaseBase $dbs ) { |
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$dataItem = $this->getDataItem(); |
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// Only execute the query when the description's type is geographical coordinates, |
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// the description is valid, and the near comparator is used. |
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if ( $dataItem instanceof SMWDIGeoCoord ) { |
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switch ( $this->getComparator() ) { |
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case SMW_CMP_EQ: |
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$comparator = '='; |
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break; |
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case SMW_CMP_LEQ: |
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$comparator = '<='; |
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break; |
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case SMW_CMP_GEQ: |
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$comparator = '>='; |
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break; |
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case SMW_CMP_NEQ: |
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$comparator = '!='; |
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break; |
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default: |
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return false; |
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} |
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$lat = $dbs->addQuotes( $dataItem->getLatitude() ); |
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$lon = $dbs->addQuotes( $dataItem->getLongitude() ); |
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$conditions = []; |
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$conditions[] = "{$tableName}.$fieldNames[1] $comparator $lat"; |
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$conditions[] = "{$tableName}.$fieldNames[2] $comparator $lon"; |
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return implode( ' AND ', $conditions ); |
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} |
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return false; |
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} |
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} |
JeroenDeDauw /
Maps
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