UmlSequenceDiagramFactoryFromXml.class.php

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<?php
class UmlSequenceDiagramFactoryFromXml implements UmlSequenceDiagramFactoryInterface
{
        protected static $objInstance;

        protected $objUmlSequenceDiagram;

    protected $objXml;

        public static function getInstance()
        {
                if( self::$objInstance == null )
                {
                        self::$objInstance = new UmlSequenceDiagramFactoryFromXml();
                }
                return self::$objInstance;
        }


    public function setXml( $strXml )
    {
        $this->objXml = simplexml_load_string( $strXml );
        return $this;
    }

    public function getXml()
    {
        return $this->objXml;
    }

    public function setUmlSequenceDiagram( UmlSequenceDiagram $objUmlSequenceDiagram )
    {
        $this->objUmlSequenceDiagram = $objUmlSequenceDiagram;
        return $this;
    }

    public function getUmlSequenceDiagram()
    {
        return $this->objUmlSequenceDiagram;
    }

    public function perform()
    {
        $this->setUmlSequenceDiagram( new UmlSequenceDiagram() );
        $this->loadActors();
        $this->loadMessages();
        return $this->getUmlSequenceDiagram();
    }

    protected function loadActors()
    {
        $arrActors = $this->getUmlSequenceDiagram()->getActors();

        foreach( $this->objXml->actors->actor as $xmlActor )
        {
            $strId = (string)$xmlActor['id'];
            $strType = (string)$xmlActor['type'];
            $strName = (string)$xmlActor;

            $objActor = new UmlSequenceDiagramActor();
            $objActor->setId( $strId );
            $objActor->setType( $strType );
            $objActor->setName( $strName );

            $arrActors[ $objActor->getId() ] = $objActor;
        }
        $this->getUmlSequenceDiagram()->setActors( $arrActors );
    }

    protected function loadMessages()
    {
        $arrMessages = $this->getUmlSequenceDiagram()->getMessages();
        $arrActors = $this->getUmlSequenceDiagram()->getActors();

        foreach( $this->objXml->messages->message as $xmlMessage )
        {
            $strFrom    = (string)$xmlMessage[ 'from' ];
            $strTo      = (string)$xmlMessage[ 'to' ];
            $strType    = (string) $xmlMessage[ 'type' ];
            $strText = (string) $xmlMessage[ 'text' ];

            $objMessage = new UmlSequenceDiagramMessage();
            $objMessage->setType( $strType );
            $objMessage->setText( $strText );

           if( !array_key_exists( $strFrom , $arrActors ) )
            {
                throw new Exception( ' Actor From ' . $strFrom . ' not Found ' );
            }
            $objMessage->setActorFrom( $arrActors[ $strFrom ] );

           if( !array_key_exists( $strTo , $arrActors ) )
            {
                throw new Exception( ' Actor To ' . $strTo . ' not Found ' );
            }
            $objMessage->setActorTo( $arrActors[ $strTo ] );

            if( isset( $xmlMessage->values->value ) )
            foreach( $xmlMessage->values->value as $xmlValue )
            {
                $strName = (string)$xmlValue['name'];
                $strValue = (string)$xmlValue['value'];
                $objValue = new UmlSequenceDiagramValue();
                $objValue->setName( $strName );
                $objValue->setValue( $strValue );

                $objMessage->addValue( $objValue );
            }

            $arrMessages[] = $objMessage;
        }
        $this->getUmlSequenceDiagram()->setMessages( $arrMessages );
    }
}
?>