75 lines
1.4 KiB
PHP
75 lines
1.4 KiB
PHP
<?php
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/**
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* @ingroup SMWDataItems
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*/
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use SMW\Exception\DataItemException;
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/**
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* This class implements number data items.
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*
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* @since 1.6
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*
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* @author Markus Krötzsch
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* @ingroup SMWDataItems
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*/
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class SMWDINumber extends SMWDataItem {
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/**
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* Internal value.
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* @var float|int
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*/
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protected $m_number;
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public function __construct( $number ) {
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if ( !is_numeric( $number ) ) {
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throw new DataItemException( "Initialization value '$number' is not a number." );
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}
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$this->m_number = $number;
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}
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public function getDIType() {
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return SMWDataItem::TYPE_NUMBER;
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}
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public function getNumber() {
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return $this->m_number;
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}
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public function getSortKey() {
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return $this->m_number;
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}
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/**
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* @see SMWDataItem::getSortKeyDataItem()
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* @return SMWDataItem
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*/
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public function getSortKeyDataItem() {
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return $this;
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}
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public function getSerialization() {
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return strval( $this->m_number );
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}
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/**
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* Create a data item from the provided serialization string and type
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* ID.
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* @note PHP can convert any string to some number, so we do not do
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* validation here (because this would require less efficient parsing).
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* @return SMWDINumber
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*/
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public static function doUnserialize( $serialization ) {
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return new SMWDINumber( floatval( $serialization ) );
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}
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public function equals( SMWDataItem $di ) {
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if ( $di->getDIType() !== SMWDataItem::TYPE_NUMBER ) {
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return false;
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}
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return $di->getNumber() === $this->m_number;
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}
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}
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