Java Code Examples for org.w3c.dom.Node#getChildNodes()

/**
 * Retrieves a {@link Node} attribute froma {@link NodeList}.
 * @param tagName the tagName of the node to retrieve
 * @param attrName the attribute name to retrieve
 * @param nodes the {@link NodeList} to retrieve from.
 * @return the relevant attribute, or "".
 */
public static String getNodeAttr(final String tagName, final String attrName, final NodeList nodes ) {
    for(int x = 0; x < nodes.getLength(); x++) {
        Node node = nodes.item(x);
        if(node.getNodeName().equalsIgnoreCase(tagName)) {
            NodeList childNodes = node.getChildNodes();
            for(int y = 0; y < childNodes.getLength(); y++) {
                Node data = childNodes.item(y);
                if(data.getNodeType() == Node.ATTRIBUTE_NODE && data.getNodeName().equalsIgnoreCase(attrName)) {
                	return data.getNodeValue();
                }
            }
        }
    }
    return "";
}
 

protected String getExceptionStackTrace(Node eventNode) {
  StringBuilder sb = new StringBuilder();
  NodeList childNodes = eventNode.getChildNodes();
  for (int i = 0; i < childNodes.getLength(); i++) {
    Node childNode = childNodes.item(i);
    String tagName = childNode.getNodeName();
    if (tagName.equalsIgnoreCase("message")) {
      sb.append(getCData(childNodes.item(i)));
    } else if (tagName.equalsIgnoreCase("frame")) {
      getStackTraceFrame(childNodes.item(i), sb);
    }
  }

  return sb.toString();

}
 

private void handleHeadlineNode(Node node, NYTCorpusDocument ldcDocument) {
	NodeList children = node.getChildNodes();
	for (int i = 0; i < children.getLength(); i++) {
		Node child = children.item(i);
		String name = child.getNodeName();
		String text = getAllText(child).trim();
		if (name.equals(HL1_TAG)) {
			ldcDocument.setHeadline(text);
		} else if (name.equals(HL2_TAG)) {
			String classAttribute = getAttributeValue(child,
					CLASS_ATTRIBUTE);
			if (classAttribute != null
					&& classAttribute.equals(ONLINE_HEADLINE_ATTRIBUTE)) {
				ldcDocument.setOnlineHeadline(text);
			}
		}
	}
}
 

private static Atom parseAtom(Node node) {
    Node nameNode = node.getAttributes().getNamedItem("name");
    Map<String, String> props = new HashMap<String, String>();
    NodeList childNodes = node.getChildNodes();
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node item = childNodes.item(i);
        if ("properties".equals(item.getNodeName())) {
            props = parseProperties(item);
        }

    }

    Atom atom = new Atom();
    if (nameNode != null) {
        atom.setName(nameNode.getNodeValue());
    }
    atom.setProperties(props);
    return atom;
}
 

/**
 * Import a Folder(s) described by an XML with content referenced
 * @param OPDObject XMLNode to process
 * @param ParentFolderId OPD destination folder
 * @param MaintainId When true, the Original Id is maintained, else a new one is assigned
 * @return The PDFolder of the imported Folder
 * @throws PDException In any error
 */
public PDFolders ImportXMLNode(Node OPDObject, String ParentFolderId, boolean MaintainId) throws PDException
{
NodeList childNodes = OPDObject.getChildNodes();
PDFolders NewFold=null;
PDObjDefs DefDoc=new PDObjDefs(getDrv());
for (int i = 0; i < childNodes.getLength(); i++)
    {
    Node item = childNodes.item(i);
    if (item.getNodeName().equalsIgnoreCase(XML_ListAttr)) 
        {
        Record r=Record.FillFromXML(item, getRecord());
        String FoldTypReaded=(String)r.getAttr(PDFolders.fFOLDTYPE).getValue();
        if (DefDoc.Load(FoldTypReaded)==null)
           throw new PDException("Unknown_FoldType"+":"+FoldTypReaded);          
        NewFold=new PDFolders(getDrv(), FoldTypReaded); // to be improved to analize the type BEFORE
        r=Record.FillFromXML(item, NewFold.getRecSum());
        NewFold.assignValues(r);
        if (!MaintainId && ExistId(NewFold.getPDId()))
            NewFold.setPDId(null);
        NewFold.setParentId(ParentFolderId);
        }
    }
NewFold.insert();
return NewFold;
}
 

private void mergeStandardTextNode(Node node)
    throws IIOInvalidTreeException {
    // Convert to comments.  For the moment ignore the encoding issue.
    // Ignore keywords, language, and encoding (for the moment).
    // If compression tag is present, use only entries with "none".
    NodeList children = node.getChildNodes();
    for (int i = 0; i < children.getLength(); i++) {
        Node child = children.item(i);
        NamedNodeMap attrs = child.getAttributes();
        Node comp = attrs.getNamedItem("compression");
        boolean copyIt = true;
        if (comp != null) {
            String compString = comp.getNodeValue();
            if (!compString.equals("none")) {
                copyIt = false;
            }
        }
        if (copyIt) {
            String value = attrs.getNamedItem("value").getNodeValue();
            COMMarkerSegment com = new COMMarkerSegment(value);
            insertCOMMarkerSegment(com);
        }
    }
}
 

/**
 * Replace all text values of a {@link Node} with CDATA values.
 *
 * @param doc  the document to update
 * @param node the node to update
 */
public static void replaceTextWithCData(Document doc, Node node) {
    if (node instanceof Text) {
        Text text = (Text) node;
        CDATASection cdata = doc.createCDATASection(text.getTextContent());
        Element parent = (Element) text.getParentNode();
        parent.replaceChild(cdata, text);
    } else if (node instanceof Element) {
        //LOGGER.debug( "ELEMENT " + element.getTagName() );
        NodeList children = node.getChildNodes();
        for (int i = 0; i < children.getLength(); i++) {
            //LOGGER.debug( "> " + children.item( i ).getClass().getName() );
            XmlUtils.replaceTextWithCData(doc, children.item(i));
        }
    }
}
 

private static Map<String, String> getPropertiesFromDoc(final Document doc) {

        final Map<String, String> propertiesMap = new HashMap<>();

        final NodeList nodeList = doc.getChildNodes();
        for (int i = 0; i < nodeList.getLength(); i++) {
            final Node node = nodeList.item(i);
            if (node.getNodeType() == Node.ELEMENT_NODE) {
                final NodeList nodeList2 = node.getChildNodes();
                for (int i2 = 0; i2 < nodeList2.getLength(); i2++) {
                    final Node node2 = nodeList2.item(i2);
                    if (node2.getNodeType() == Node.ELEMENT_NODE) {
                        final String propName = node2.getNodeName();
                        final String propValue = node2.getTextContent();
                        LOG.debug("Property: " + propName + " has Value: " + propValue);
                        if (propName != null && propValue != null) {
                            propertiesMap.put(node2.getNodeName(), node2.getTextContent());
                        }
                    }
                }
            }
        }
        return propertiesMap;
    }
 

void updateFromNativeNode(Node node, boolean fromScratch)
    throws IIOInvalidTreeException {
    NamedNodeMap attrs = node.getAttributes();
    int numComponents = getAttributeValue(node, attrs, "numScanComponents",
                                          1, 4, true);
    int value = getAttributeValue(node, attrs, "startSpectralSelection",
                                  0, 63, false);
    startSpectralSelection = (value != -1) ? value : startSpectralSelection;
    value = getAttributeValue(node, attrs, "endSpectralSelection",
                              0, 63, false);
    endSpectralSelection = (value != -1) ? value : endSpectralSelection;
    value = getAttributeValue(node, attrs, "approxHigh", 0, 15, false);
    approxHigh = (value != -1) ? value : approxHigh;
    value = getAttributeValue(node, attrs, "approxLow", 0, 15, false);
    approxLow = (value != -1) ? value : approxLow;

    // Now the children
    NodeList children = node.getChildNodes();
    if (children.getLength() != numComponents) {
        throw new IIOInvalidTreeException
            ("numScanComponents must match the number of children", node);
    }
    componentSpecs = new ScanComponentSpec[numComponents];
    for (int i = 0; i < numComponents; i++) {
        componentSpecs[i] = new ScanComponentSpec(children.item(i));
    }
}
 

static Node duplicateNode(Document document, Node node) {
    Node newNode;
    if (node.getNamespaceURI() != null) {
        newNode = document.createElementNS(node.getNamespaceURI(), node.getLocalName());
    } else {
        newNode = document.createElement(node.getNodeName());
    }

    // copy the attributes
    NamedNodeMap attributes = node.getAttributes();
    for (int i = 0 ; i < attributes.getLength(); i++) {
        Attr attr = (Attr) attributes.item(i);

        Attr newAttr;
        if (attr.getNamespaceURI() != null) {
            newAttr = document.createAttributeNS(attr.getNamespaceURI(), attr.getLocalName());
            newNode.getAttributes().setNamedItemNS(newAttr);
        } else {
            newAttr = document.createAttribute(attr.getName());
            newNode.getAttributes().setNamedItem(newAttr);
        }

        newAttr.setValue(attr.getValue());
    }

    // then duplicate the sub-nodes.
    NodeList children = node.getChildNodes();
    for (int i = 0 ; i < children.getLength() ; i++) {
        Node child = children.item(i);
        if (child.getNodeType() != Node.ELEMENT_NODE) {
            continue;
        }
        Node duplicatedChild = duplicateNode(document, child);
        newNode.appendChild(duplicatedChild);
    }

    return newNode;
}
 

private static void findChildPSPs(DigitalObject dObj, MetsContext ctx, List<String> psps, String parentType) throws MetsExportException {
    List<Element> relsExt = FoxmlUtils.findDatastream(dObj, "RELS-EXT").getDatastreamVersion().get(0).getXmlContent().getAny();
    Node node = MetsUtils.xPathEvaluateNode(relsExt, "*[local-name()='RDF']/*[local-name()='Description']");

    NodeList hasPageNodes = node.getChildNodes();
    for (int a = 0; a < hasPageNodes.getLength(); a++) {
        if (MetsUtils.hasReferenceXML(hasPageNodes.item(a).getNodeName())) {
            Node rdfResourceNode = hasPageNodes.item(a).getAttributes().getNamedItem("rdf:resource");
            String fileName = rdfResourceNode.getNodeValue();

            DigitalObject object = null;
            if (ctx.getFedoraClient() != null) {
                object = MetsUtils.readRelatedFoXML(fileName, ctx.getFedoraClient());
            } else {
                object = MetsUtils.readRelatedFoXML(ctx.getPath(), fileName);
            }
            relsExt = FoxmlUtils.findDatastream(object, "RELS-EXT").getDatastreamVersion().get(0).getXmlContent().getAny();
            String model = MetsUtils.getModel(relsExt);
            String elementType = getElementType(model);

            if (Const.PSPElements.contains(elementType)) {
                if (((Const.MONOGRAPH_UNIT.equals(parentType) || (Const.ISSUE.equals(parentType)))) && (Const.SUPPLEMENT.equals(elementType))) {
                    // do not add
                } else {
                    psps.add(object.getPID());
                }
            } else {
                findChildPSPs(object, ctx, psps, elementType);
            }
        }
    }
}
 

public static List<Element> getChildElementsByTag(Node parent, String tag) {
    List<Element> children = new ArrayList<Element>();
    NodeList nl = parent.getChildNodes();
    for (int i=0; i<nl.getLength(); i++) {
        if (nl.item(i) instanceof Element) {
            Element e = (Element) nl.item(i);
            if (e.getTagName().equals(tag))
                children.add(e);
        }
    }
    return children;
}
 

private void handleDocdataNode(Node node, NYTCorpusDocument ldcDocument) {
	NodeList children = node.getChildNodes();
	for (int i = 0; i < children.getLength(); i++) {
		Node child = children.item(i);
		String name = child.getNodeName();
		if (name.equals(DOC_ID_TAG)) {
			handleDocumentIdNode(ldcDocument, child);
		} else if (name.equals(SERIES_TAG)) {
			ldcDocument
					.setKicker(getAttributeValue(child, SERIES_NAME_TAG));
		} else if (name.equals(IDENTIFIED_CONTENT_TAG)) {
			handleIdentifiedContent(child, ldcDocument);
		}
	}
}
 

/**
 *
 * @param listVector
 * @param tempNode
 * @param namespaceURI
 * @param localname
 * @param isNamespaceURIWildCard
 * @param isLocalNameWildCard
 *
 * Private method to be used for recursive iterations to obtain elements by tag name
 * and namespaceURI.
 */
private final void traverseChildren
(
 Vector listVector,
 Node tempNode,
 String namespaceURI,
 String localname,
 boolean isNamespaceURIWildCard,
 boolean isLocalNameWildCard)
 {
  if (tempNode == null)
  {
    return;
  }
  else
  {
    if (tempNode.getNodeType() == DTM.ELEMENT_NODE
            && (isLocalNameWildCard
                    || tempNode.getLocalName().equals(localname)))
    {
      String nsURI = tempNode.getNamespaceURI();
      if ((namespaceURI == null && nsURI == null)
             || isNamespaceURIWildCard
             || (namespaceURI != null && namespaceURI.equals(nsURI)))
      {
        listVector.add(tempNode);
      }
    }
    if(tempNode.hasChildNodes())
    {
      NodeList nl = tempNode.getChildNodes();
      for(int i = 0; i < nl.getLength(); i++)
      {
        traverseChildren(listVector, nl.item(i), namespaceURI, localname,
                         isNamespaceURIWildCard, isLocalNameWildCard);
      }
    }
  }
}
 

private void parseJavaClientGenerator(Context context, Node node) {
    JavaClientGeneratorConfiguration javaClientGeneratorConfiguration = new JavaClientGeneratorConfiguration();

    context.setJavaClientGeneratorConfiguration(javaClientGeneratorConfiguration);

    Properties attributes = parseAttributes(node);
    String type = attributes.getProperty("type");
    String targetPackage = attributes.getProperty("targetPackage");
    String targetProject = attributes.getProperty("targetProject");
    String implementationPackage = attributes
            .getProperty("implementationPackage");

    javaClientGeneratorConfiguration.setConfigurationType(type);
    javaClientGeneratorConfiguration.setTargetPackage(targetPackage);
    javaClientGeneratorConfiguration.setTargetProject(targetProject);
    javaClientGeneratorConfiguration
            .setImplementationPackage(implementationPackage);

    NodeList nodeList = node.getChildNodes();
    for (int i = 0; i < nodeList.getLength(); i++) {
        Node childNode = nodeList.item(i);

        if (childNode.getNodeType() != Node.ELEMENT_NODE) {
            continue;
        }

        if ("property".equals(childNode.getNodeName())) {
            parseProperty(javaClientGeneratorConfiguration, childNode);
        }
    }
}
 

/**
 * Process a rule descrtiprion node
 * @param rule the rule being constructed
 * @param descriptionNode must be a description element node
 */
private void parseDescriptionNode(Rule rule, Node descriptionNode) {
    NodeList nodeList = descriptionNode.getChildNodes();
    StringBuffer buffer = new StringBuffer();
    for (int i = 0; i < nodeList.getLength(); i++) {
        Node node = nodeList.item(i);
        if (node.getNodeType() == Node.CDATA_SECTION_NODE) {
            buffer.append(node.getNodeValue());
        } else if (node.getNodeType() == Node.TEXT_NODE) {
            buffer.append(node.getNodeValue());
        }
    }
    rule.setDescription(buffer.toString());
}
 

/**
 * returns a list of values from a child node of the first parameter. The
 * list values are expected to be atomic, i.e. no complex node structures
 * 
 * @param node
 *            the node containing the data
 * @param childName
 *            the name of the child node
 * @return a list of values from the specified child node
 */
protected List<String> getListFromChildElement(Node node, String childName) {

	// get all child nodes
	NodeList children = node.getChildNodes();

	// iterate over the child nodes until the node with childName is found
	for (int j = 0; j < children.getLength(); j++) {
		Node child = children.item(j);

		// check the node type and name
		if (child.getNodeType() == org.w3c.dom.Node.ELEMENT_NODE
				&& child.getNodeName().equals(childName)) {

			// prepare a list to hold all values
			List<String> values = new ArrayList<>(child.getChildNodes()
					.getLength());

			// iterate the value nodes
			for (int i = 0; i < child.getChildNodes().getLength(); i++) {
				Node valueNode = child.getChildNodes().item(i);
				String value = valueNode.getTextContent().trim();

				// add the value
				values.add(value);
			}

			return values;
		}
	}

	return null;
}
 

@Override
protected void marshalDomNode(Object graph, Node node) throws XmlMappingException {
	Document document = (node.getNodeType() == Node.DOCUMENT_NODE ? (Document) node : node.getOwnerDocument());
	Node xmlBeansNode = ((XmlObject) graph).newDomNode(getXmlOptions());
	NodeList xmlBeansChildNodes = xmlBeansNode.getChildNodes();
	for (int i = 0; i < xmlBeansChildNodes.getLength(); i++) {
		Node xmlBeansChildNode = xmlBeansChildNodes.item(i);
		Node importedNode = document.importNode(xmlBeansChildNode, true);
		node.appendChild(importedNode);
	}
}
 

/**
 * Parses the input stream from the CTF configuration file
 * and fills <code>registeredClasses</code> and <code>registeredListeners</code>
 * with classes found.
 * @param inputStream - the input stream
 * @param classLoader - the class loader for the current thread
 * @throws ClassNotFoundException - if class is not found
 */
public void parse( InputStream inputStream, String systemID ) throws ClassNotFoundException, IOException,
                                                              SAXException, ParserConfigurationException,
                                                              AgentException {

    inititalizeParser(inputStream, systemID);
    initializeComponentMetaData();

    NodeList list = mDocument.getChildNodes();
    for (int i = 0; i < list.getLength(); i++) {
        Node childNode = list.item(i);
        if (childNode.getNodeType() == Node.ELEMENT_NODE
            && childNode.getNodeName().equals(COMPONENT)) {
            componentName = childNode.getAttributes().getNamedItem("name").getNodeValue();

            NodeList componentSubElementsList = childNode.getChildNodes();
            for (int k = 0; k < componentSubElementsList.getLength(); k++) {
                Node componentSubElement = componentSubElementsList.item(k);

                if (componentSubElement.getNodeName().equals(ACTION_CLASS)) {
                    String nameAttribute = componentSubElement.getAttributes()
                                                              .getNamedItem("name")
                                                              .getNodeValue();
                    actionClassNames.add(nameAttribute);
                } else if (componentSubElement.getNodeName().equals(INITIALIZATION_HANDLER)) {
                    initializationHandler = componentSubElement.getAttributes()
                                                               .getNamedItem("name")
                                                               .getNodeValue();
                } else if (componentSubElement.getNodeName().equals(FINALIZATION_HANDLER)) {
                    finalizationHandler = componentSubElement.getAttributes()
                                                             .getNamedItem("name")
                                                             .getNodeValue();
                } else if (componentSubElement.getNodeName().equals(CLEANUP_HANDLER)) {
                    cleanupHandler = componentSubElement.getAttributes()
                                                        .getNamedItem("name")
                                                        .getNodeValue();
                } else if (componentSubElement.getNodeName().equals(ENVIRONMENT)) {
                    parseEnvironment(componentSubElement);
                }
            }
        }
    }
}
 

/**
 * Returns a complete description string for the given transformation node
 * @param transformation {@link Node} containing a signle reference transformation information
 * @return transformation description name
 */
private String buildTransformationName(Node transformation) {
	String algorithmUri = DomUtils.getValue(transformation, "@Algorithm");
	String algorithm = algorithmUri;
	if (presentableTransformationNames.containsKey(algorithmUri)) {
		algorithm = presentableTransformationNames.get(algorithmUri);
	}
	StringBuilder stringBuilder = new StringBuilder(algorithm);
	if (transformation.hasChildNodes()) {
		NodeList childNodes = transformation.getChildNodes();
		stringBuilder.append(" (");
		boolean hasValues = false;
		
		for (int ii = 0; ii < childNodes.getLength(); ii++) {
			Node parameterNode = childNodes.item(ii);
			if (Node.ELEMENT_NODE != parameterNode.getNodeType()) {
				continue;
			}

			// attach attribute values
			NamedNodeMap attributes = parameterNode.getAttributes();
			for (int jj = 0; jj < attributes.getLength(); jj++) {
				Node attribute = attributes.item(jj);
				String attrName = attribute.getLocalName();
				String attrValue = attribute.getNodeValue();
				if (algorithmUri.equals(attrValue)) {
					continue; // skip the case when the algorithm uri is defined in a child node
				}
				if (hasValues) {
					stringBuilder.append("; ");
				}
				stringBuilder.append(attrName).append(": ");
				stringBuilder.append(attrValue);
				hasValues = true;
			}
			
			// attach node value
			Node parameterValueNode = parameterNode.getFirstChild();
			if (parameterValueNode != null && Node.TEXT_NODE == parameterValueNode.getNodeType() &&
					Utils.isStringNotBlank(parameterValueNode.getTextContent())) {
				if (hasValues) {
					stringBuilder.append("; ");
				}
				stringBuilder.append(parameterNode.getLocalName()).append(": ");
				stringBuilder.append(parameterValueNode.getTextContent());
				hasValues = true;
			}
		}
		stringBuilder.append(")");
	}
	return stringBuilder.toString();
}