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<?php
namespace SMW\DataValues;
use SMW\ApplicationFactory;
use SMW\DIProperty;
use SMWDataValue as DataValue;
use SMWPropertyListValue as PropertyListValue;
/**
* @private
*
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
abstract class AbstractMultiValue extends DataValue {
/**
* @since 2.5
*
* @param string $userValue
*
* @return array
*/
abstract public function getValuesFromString( $userValue );
/**
* @since 2.5
*
* @param DIProperty[] $properties
*
* @return DIProperty[]|null
*/
abstract public function setFieldProperties( array $properties );
/**
* @since 2.5
*
* @return DIProperty[]|null
*/
abstract public function getProperties();
/**
* Return the array (list) of properties that the individual entries of
* this datatype consist of.
*
* @since 2.5
*
* @return DIProperty[]|null
*/
abstract public function getPropertyDataItems();
/**
* Create a list (array with numeric keys) containing the datavalue
* objects that this SMWRecordValue object holds. Values that are not
* present are set to null. Note that the first index in the array is
* 0, not 1.
*
* @since 2.5
*
* @return DataItem[]|null
*/
public function getDataItems() {
if ( !$this->isValid() ) {
return [];
}
$dataItems = [];
$index = 0;
foreach ( $this->getPropertyDataItems() as $diProperty ) {
$values = $this->getDataItem()->getSemanticData()->getPropertyValues( $diProperty );
$dataItems[$index] = count( $values ) > 0 ? reset( $values ) : null;
$index++;
}
return $dataItems;
}
/**
* @note called by SMWResultArray::loadContent for matching an index as denoted
* in |?Foo=Bar|+index=1 OR |?Foo=Bar|+index=Bar
*
* @see https://www.semantic-mediawiki.org/wiki/Help:Type_Record#Semantic_search
*
* @since 2.5
*
* @param string|integer $index
*
* @return DataItem[]|null
*/
public function getDataItemByIndex( $index ) {
if ( is_numeric( $index ) ) {
$pos = $index - 1;
$dataItems = $this->getDataItems();
return isset( $dataItems[$pos] ) ? $dataItems[$pos] : null;
}
if ( ( $property = $this->getPropertyDataItemByIndex( $index ) ) !== null ) {
$values = $this->getDataItem()->getSemanticData()->getPropertyValues( $property );
return reset( $values );
}
return null;
}
/**
* @note called by SMWResultArray::getNextDataValue to match an index
* that has been denoted using |?Foo=Bar|+index=1 OR |?Foo=Bar|+index=Bar
*
* @since 2.5
*
* @param string|integer $index
*
* @return DIProperty|null
*/
public function getPropertyDataItemByIndex( $index ) {
$properties = $this->getPropertyDataItems();
if ( is_numeric( $index ) ) {
$pos = $index - 1;
return isset( $properties[$pos] ) ? $properties[$pos] : null;
}
foreach ( $properties as $property ) {
if ( $property->getLabel() === $index ) {
return $property;
}
}
return null;
}
/**
* Return the array (list) of properties that the individual entries of
* this datatype consist of.
*
* @since 2.5
*
* @param DIProperty|null $property
*
* @return DIProperty[]|[]
*/
protected function getFieldProperties( DIProperty $property = null ) {
if ( $property === null || $property->getDiWikiPage() === null ) {
return [];
}
$dataItem = ApplicationFactory::getInstance()->getPropertySpecificationLookup()->getFieldListBy( $property );
if ( !$dataItem ) {
return [];
}
$propertyListValue = new PropertyListValue( '__pls' );
$propertyListValue->setDataItem( $dataItem );
if ( !$propertyListValue->isValid() ) {
return [];
}
return $propertyListValue->getPropertyDataItems();
}
}
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