SemanticMediaWiki/includes/parserhooks/SMW_Subobject.php

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<?php

class SMWSubobject {

        protected static $m_errors;

        public static function render( Parser &$parser ) {
                self::$m_errors = array();

                $params = func_get_args();
                array_shift( $params ); // We already know the $parser ...

                $subobjectName = str_replace( ' ', '_', trim( array_shift( $params ) ) );
                $mainSemanticData = SMWParseData::getSMWData( $parser );
                $subject = $mainSemanticData->getSubject();

                $diSubWikiPage = new SMWDIWikiPage( $subject->getDBkey(),
                                $subject->getNamespace(), $subject->getInterwiki(),
                                $subobjectName );

                $semanticData = new SMWContainerSemanticData( $diSubWikiPage );

                foreach ( $params as $param ) {
                        $parts = explode( '=', trim( $param ), 2 );

                        // Only add the property when there is both a name 
                        // and a non-empty value.
                        if ( count( $parts ) == 2 && $parts[1] != '' ) {
                                self::addPropertyValueToSemanticData( $parts[0], $parts[1], $semanticData );
                        } else {
                                //self::$m_errors[] = wfMsgForContent( 'smw_noinvannot' );
                        }
                }

                $propertyDi = new SMWDIProperty('_SOBJ');
                $subObjectDi = new SMWDIContainer( $semanticData );
                SMWParseData::getSMWData( $parser )->addPropertyObjectValue( $propertyDi, $subObjectDi );

                return smwfEncodeMessages( self::$m_errors );
        }

        protected static function addPropertyValueToSemanticData( $propertyName, $valueString, $semanticData ) {
                $propertyDv = SMWPropertyValue::makeUserProperty( $propertyName );
                $propertyDi = $propertyDv->getDataItem();

                if ( !$propertyDi->isInverse() ) {
                        $valueDv = SMWDataValueFactory::newPropertyObjectValue( $propertyDi, $valueString,
                                false, $semanticData->getSubject() );
                        $semanticData->addPropertyObjectValue( $propertyDi, $valueDv->getDataItem() );
                        
                        // Take note of the error for storage (do this here and not in storage, thus avoiding duplicates).
                        if ( !$valueDv->isValid() ) {
                                $semanticData->addPropertyObjectValue( new SMWDIProperty( '_ERRP' ),
                                        $propertyDi->getDiWikiPage() );
                                self::$m_errors = array_merge( self::$m_errors, $valueDv->getErrors() );
                        }
                } else {
                        self::$m_errors[] = wfMsgForContent( 'smw_noinvannot' );
                }
        }
        
}

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