Examples of org.w3c.dom.DocumentFragment

org.w3c.dom.DocumentFragment
DocumentFragment is a "lightweight" or "minimal" Document object. It is very common to want to be able to extract a portion of a document's tree or to create a new fragment of a document. Imagine implementing a user command like cut or rearranging a document by moving fragments around. It is desirable to have an object which can hold such fragments and it is quite natural to use a Node for this purpose. While it is true that a Document object could fulfill this role, a Document object can potentially be a heavyweight object, depending on the underlying implementation. What is really needed for this is a very lightweight object. DocumentFragment is such an object.
Furthermore, various operations -- such as inserting nodes as children of another Node -- may take DocumentFragment objects as arguments; this results in all the child nodes of the DocumentFragment being moved to the child list of this node.
The children of a DocumentFragment node are zero or more nodes representing the tops of any sub-trees defining the structure of the document. DocumentFragment nodes do not need to be well-formed XML documents (although they do need to follow the rules imposed upon well-formed XML parsed entities, which can have multiple top nodes). For example, a DocumentFragment might have only one child and that child node could be a Text node. Such a structure model represents neither an HTML document nor a well-formed XML document.
When a DocumentFragment is inserted into a Document (or indeed any other Node that may take children) the children of the DocumentFragment and not the DocumentFragment itself are inserted into the Node . This makes the DocumentFragment very useful when the user wishes to create nodes that are siblings; the DocumentFragment acts as the parent of these nodes so that the user can use the standard methods from the Node interface, such as insertBefore and appendChild .


        })
        .setNamespaceAware( true )
        .newDigester();


        DocumentFragment fragment = digester.parse( getInputStream( "Test3.xml" ) );


        assertNotNull( fragment );
        assertEquals( 2, fragment.getChildNodes().getLength() );


        assertEquals( Node.ELEMENT_NODE, fragment.getFirstChild().getNodeType() );
        Element address1 = (Element) fragment.getFirstChild();
        assertEquals( "address", address1.getNodeName() );
        assertEquals( "http://commons.apache.org/digester/Bar", address1.getNamespaceURI() );
        assertEquals( "address", address1.getLocalName() );
        assertEquals( 5, address1.getAttributes().getLength() );
        assertEquals( "home", address1.getAttribute( "type" ) );
        assertEquals( "Home Street", address1.getAttribute( "street" ) );
        assertEquals( "Home City", address1.getAttribute( "city" ) );
        assertEquals( "HS", address1.getAttribute( "state" ) );
        assertEquals( "HmZip", address1.getAttribute( "zipCode" ) );


        assertEquals( Node.ELEMENT_NODE, fragment.getLastChild().getNodeType() );
        Element address2 = (Element) fragment.getLastChild();
        assertEquals( "address", address2.getNodeName() );
        assertEquals( "http://commons.apache.org/digester/Bar", address2.getNamespaceURI() );
        assertEquals( "address", address2.getLocalName() );
        assertEquals( 5, address2.getAttributes().getLength() );
        assertEquals( "office", address2.getAttribute( "type" ) );

View Full Code Here

            }


        })
        .newDigester();


        DocumentFragment fragment = digester.parse( new StringReader( TEST_XML ) );


        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document doc = builder.newDocument();
        Node importedFragment = doc.importNode( fragment, true );

View Full Code Here

    }


    protected void runTest() throws Throwable {
        Document document = dbf.newDocumentBuilder().newDocument();
        
        DocumentFragment fragment = document.createDocumentFragment();
        Element x = document.createElementNS(null, "x");
        Element y = document.createElementNS(null, "y");
        fragment.appendChild(x);
        fragment.appendChild(y);
        
        Element element = document.createElementNS(null, "parent");
        Element a = document.createElementNS(null, "a");
        Element b = document.createElementNS(null, "b");
        Element c = document.createElementNS(null, "c");
        element.appendChild(a);
        element.appendChild(b);
        element.appendChild(c);
        
        element.replaceChild(fragment, b);
        
        NodeList children = element.getChildNodes();
        assertEquals(4, children.getLength());
        assertSame(a, children.item(0));
        assertSame(x, children.item(1));
        assertSame(y, children.item(2));
        assertSame(c, children.item(3));
        
        assertSame(element, x.getParentNode());
        assertSame(element, y.getParentNode());
        
        assertNull(fragment.getFirstChild());
        assertNull(fragment.getLastChild());
        assertEquals(0, fragment.getChildNodes().getLength());
        
        assertSame(a, element.getFirstChild());
        assertSame(c, element.getLastChild());
    }

View Full Code Here

    }


    protected void runTest() throws Throwable {
        Document document = dbf.newDocumentBuilder().newDocument();
        
        DocumentFragment fragment = document.createDocumentFragment();
        Element x = document.createElementNS(null, "x");
        Element y = document.createElementNS(null, "y");
        fragment.appendChild(x);
        fragment.appendChild(y);
        
        Element element = document.createElementNS(null, "parent");
        Element a = document.createElementNS(null, "a");
        Element b = document.createElementNS(null, "b");
        element.appendChild(a);
        element.appendChild(b);
        
        element.replaceChild(fragment, a);
        
        NodeList children = element.getChildNodes();
        assertEquals(3, children.getLength());
        assertSame(x, children.item(0));
        assertSame(y, children.item(1));
        assertSame(b, children.item(2));
        
        assertSame(element, x.getParentNode());
        assertSame(element, y.getParentNode());
        
        assertNull(fragment.getFirstChild());
        assertNull(fragment.getLastChild());
        assertEquals(0, fragment.getChildNodes().getLength());
        
        assertSame(x, element.getFirstChild());
        assertSame(b, element.getLastChild());
    }

View Full Code Here

        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document myDoc = db.newDocument();
        
        Text textNode = myDoc.createTextNode(textNodeValue);
        DocumentFragment docFrag = myDoc.createDocumentFragment();
  
        docFrag.appendChild(textNode);
  
        return new NodeSet(docFrag);
      }
      catch(ParserConfigurationException pce)
      {

View Full Code Here

  public final void parseFragment(String source, Node result) throws GadgetException {
    boolean shouldCache = shouldCache();
    String key = null;    
    if (shouldCache) {
      key = HashUtil.rawChecksum(source.getBytes());
      DocumentFragment cachedFragment = fragmentCache.getElement(key);
      if (cachedFragment != null) {
        copyFragment(cachedFragment, result);
        return;
      }
    }
    DocumentFragment fragment = parseFragmentImpl(source);
    if (shouldCache) {
      fragmentCache.addElement(key, fragment);
    }
    copyFragment(fragment, result);
  }

View Full Code Here

          gadget.getContext().getLocale(), gadget.getContext().getIgnoreCache());
      MessageELResolver messageELResolver = new MessageELResolver(expressions, bundle);
  
      int autoUpdateID = 0;
      for (Element template : templates) {
        DocumentFragment result = processor.get().processTemplate(
            template, templateContext, messageELResolver, registry);
        // TODO: sanitized renders should ignore this value
        if ("true".equals(template.getAttribute("autoUpdate"))) {
          // autoUpdate requires client-side processing.
          needsFeature = true;

View Full Code Here

    } catch (IOException ioe) {
      return null;
    }


    Document document = handler.getDocument();
    DocumentFragment fragment = handler.getFragment();
    normalizeFragment(document, fragment);
    return document;
  }

View Full Code Here

      // No need to defer as full DOM is walked later
      parser.setFeature("http://apache.org/xml/features/dom/defer-node-expansion", false);
      parser.parse(input);
      return parser.getDocument();
    } else {
      DocumentFragment fragment = parseFragmentImpl(source);
      normalizeFragment(fragment.getOwnerDocument(), fragment);
      return fragment.getOwnerDocument();
    }
  }

View Full Code Here

  protected DocumentFragment parseFragmentImpl(String source) throws GadgetException {
    try {
      Document htmlDoc = documentProvider.createDocument(null, null, null);
      // Workaround for error check failure adding text node to entity ref as a child
      htmlDoc.setStrictErrorChecking(false);
      DocumentFragment fragment = htmlDoc.createDocumentFragment();
      InputSource input = new InputSource(new StringReader(source));
      DOMFragmentParser parser = new DOMFragmentParser();
      parser.setProperty("http://cyberneko.org/html/properties/names/elems", "default");
      parser.setFeature("http://cyberneko.org/html/features/document-fragment", true);
      parser.setProperty("http://cyberneko.org/html/properties/names/attrs", "no-change");

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.w3c.dom.DocumentFragment

com.cicadalane.androlate.XmlUtils

com.google.caja.parser.html.DomParser

com.google.caja.parser.html.DomParserTest

com.google.caja.parser.html.NodesTest

com.nwalsh.xalan.Verbatim

com.sun.org.apache.xalan.internal.lib.Extensions

com.sun.org.apache.xerces.internal.dom.RangeImpl

com.sun.org.apache.xpath.internal.objects.XObject

de.danet.an.util.web.Mapping

dom.DTest

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.