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<?php
/**
* @ingroup SMWDataValues
*/
/**
* This datavalue implements error datavalues, a kind of pseudo data value that
* is used in places where a data value is expected but no more meaningful
* value could be created. It is always invalid and never gets stored or
* exported, but it can help to transport an error message.
*
* @note SMWDataValue will return a data item of type SMWDIError for invalid
* data values. Hence this is the DI type of this DV, even if not mentioned in
* this file.
*
* @author Markus Krötzsch
* @ingroup SMWDataValues
*/
class SMWErrorValue extends SMWDataValue {
public function __construct( $typeid, $errormsg = '', $uservalue = '', $caption = false ) {
parent::__construct( $typeid );
$this->m_caption = ( $caption !== false ) ? $caption : $uservalue;
if ( $errormsg !== '' ) {
$this->addErrorMsg( $errormsg );
}
}
protected function parseUserValue( $value ) {
if ( $this->m_caption === false ) {
$this->m_caption = $value;
}
$this->addErrorMsg( [ 'smw-datavalue-parse-error', $value ] );
}
/**
* @see SMWDataValue::loadDataItem()
* @param $dataitem SMWDataItem
* @return boolean
*/
protected function loadDataItem( SMWDataItem $dataItem ) {
if ( $dataItem->getDIType() == SMWDataItem::TYPE_ERROR ) {
$this->addError( $dataItem->getErrors() );
$this->m_caption = $this->getErrorText();
return true;
} else {
return false;
}
}
public function getShortWikiText( $linked = null ) {
return $this->m_caption;
}
public function getShortHTMLText( $linker = null ) {
return htmlspecialchars( $this->getShortWikiText( $linker ) );
}
public function getLongWikiText( $linked = null ) {
return $this->getErrorText();
}
public function getLongHTMLText( $linker = null ) {
return $this->getErrorText();
}
public function getWikiValue() {
if ( $this->m_dataitem !== null ) {
return $this->m_dataitem->getString();
}
return $this->getErrorText();
}
public function isValid() {
return false;
}
}
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