private void processBufferedElement()

in gateway-provider-rewrite/src/main/java/org/apache/knox/gateway/filter/rewrite/impl/xml/XmlFilterReader.java [334:386]
53 lines of code
13 McCabe index (conditional complexity)

  private void processBufferedElement( Level level, UrlRewriteFilterGroupDescriptor config ) throws XPathExpressionException {
    for( UrlRewriteFilterPathDescriptor selector : config.getSelectors() ) {
      if( selector instanceof UrlRewriteFilterApplyDescriptor ) {
        XPathExpression path = (XPathExpression)selector.compiledPath( XPATH_COMPILER );
        Object node = path.evaluate( level.scopeNode, XPathConstants.NODE );
        if( node != null ) {
          UrlRewriteFilterApplyDescriptor apply = (UrlRewriteFilterApplyDescriptor)selector;
          if( node instanceof Element ) {
            Element element = (Element)node;
            String value = element.getTextContent();
            value = filterText( extractQName( element ), value, apply.rule() );
            element.setTextContent( value );
          } else if( node instanceof Text ) {
            Text text = (Text)node;
            String value = text.getWholeText();
            value = filterText( extractQName( text.getParentNode() ), value, apply.rule() );
            text.replaceWholeText( value );
          } else if( node instanceof Attr ) {
            Attr attr = (Attr)node;
            String value = attr.getValue();
            value = filterAttribute( extractQName( attr.getOwnerElement() ), extractQName( attr ), value, apply.rule() );
            attr.setValue( value );
          } else {
            throw new IllegalArgumentException( RES.unexpectedSelectedNodeType( node ) );
          }
        }
      } else if( selector instanceof UrlRewriteFilterDetectDescriptor) {
        XPathExpression path = (XPathExpression)selector.compiledPath( XPATH_COMPILER );
        Object node = path.evaluate( level.scopeNode, XPathConstants.NODE );
        if( node != null ) {
          UrlRewriteFilterDetectDescriptor detect = (UrlRewriteFilterDetectDescriptor)selector;
          String value;
          if( node instanceof Element ) {
            Element element = (Element)node;
            value = element.getTextContent();
          } else if( node instanceof Text ) {
            Text text = (Text)node;
            value = text.getWholeText();
          } else if( node instanceof Attr ) {
            Attr attr = (Attr)node;
            value = attr.getValue();
          } else {
            throw new IllegalArgumentException( RES.unexpectedSelectedNodeType( node ) );
          }
          if( detect.compiledValue( REGEX_COMPILER ).matcher( value ).matches() ) {
            processBufferedElement( level, detect );
          }
        }
      } else {
        throw new IllegalArgumentException( RES.unexpectedRewritePathSelector( selector ) );
      }
    }
  }