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<?php
namespace SMW\DataValues\ValueValidators;
use SMWDataValue as DataValue;
/**
* @private
*
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class PropertySpecificationConstraintValueValidator implements ConstraintValueValidator {
/**
* @var boolean
*/
private $hasConstraintViolation = false;
/**
* @var array
*/
private static $inMemoryLabelToLanguageTracer = [];
/**
* @since 2.5
*
* {@inheritDoc}
*/
public function hasConstraintViolation() {
return $this->hasConstraintViolation;
}
/**
* @since 2.5
*
* {@inheritDoc}
*/
public function validate( $dataValue ) {
$this->hasConstraintViolation = false;
if (
!$dataValue instanceof DataValue ||
$dataValue->getProperty() === null ||
$dataValue->getContextPage() === null ||
$dataValue->getContextPage()->getNamespace() !== SMW_NS_PROPERTY ) {
return $this->hasConstraintViolation;
}
if ( $dataValue->getProperty()->getKey() === '_PPLB' ) {
return $this->doValidateCodifiedPreferredPropertyLabelConstraints( $dataValue );
}
}
private function doValidateCodifiedPreferredPropertyLabelConstraints( $dataValue ) {
// Annotated but not enabled
if ( !$dataValue->isEnabledFeature( SMW_DV_PPLB ) ) {
return $dataValue->addErrorMsg(
[
'smw-datavalue-feature-not-supported',
'SMW_DV_PPLB'
]
);
}
$value = $dataValue->toArray();
$dbKey = $dataValue->getContextPage()->getDBKey();
// Language has been already assigned!
if ( ( $isKnownBy = $this->isKnownByLabelAndLanguage( $value, $dbKey ) ) !== false ) {
$dataValue->addErrorMsg(
[
'smw-property-preferred-label-language-combination-exists',
$value['_TEXT'],
$value['_LCODE'],
$isKnownBy
]
);
}
}
private function isKnownByLabelAndLanguage( $value, $dbkey ) {
$lang = isset( $value['_LCODE'] ) ? $value['_LCODE'] : false;
if ( !isset( self::$inMemoryLabelToLanguageTracer[$dbkey] ) ) {
self::$inMemoryLabelToLanguageTracer[$dbkey] = [];
}
if ( $lang && !isset( self::$inMemoryLabelToLanguageTracer[$dbkey][$lang] ) ) {
self::$inMemoryLabelToLanguageTracer[$dbkey][$lang] = $value['_TEXT'];
}
if ( $lang && self::$inMemoryLabelToLanguageTracer[$dbkey][$lang] !== $value['_TEXT'] ) {
return self::$inMemoryLabelToLanguageTracer[$dbkey][$lang];
}
return false;
}
}
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