diff options
author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2008-10-30 00:14:15 +0000 |
---|---|---|
committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2008-10-30 00:14:15 +0000 |
commit | 5d2e096f06d6cac9ed6ee18ad1cf716a09adc2b0 (patch) | |
tree | 2260086a44fd2494724820533a4a65dbdc1a381a /branches/sca-java-1.3.3/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/processor/xml/AnyElementProcessor.java | |
parent | 01d5cda417c43c3220360f57ffd371e5a19279d9 (diff) |
TUSCANY-2629 and TUSCANY-2624 - Enhancments to processor that handles unknown elements
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@709052 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to '')
-rw-r--r-- | branches/sca-java-1.3.3/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/processor/xml/AnyElementProcessor.java | 329 |
1 files changed, 90 insertions, 239 deletions
diff --git a/branches/sca-java-1.3.3/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/processor/xml/AnyElementProcessor.java b/branches/sca-java-1.3.3/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/processor/xml/AnyElementProcessor.java index 66bea7a4dd..e034cb1ecf 100644 --- a/branches/sca-java-1.3.3/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/processor/xml/AnyElementProcessor.java +++ b/branches/sca-java-1.3.3/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/processor/xml/AnyElementProcessor.java @@ -22,17 +22,22 @@ import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; import static javax.xml.stream.XMLStreamConstants.START_ELEMENT; import java.util.ArrayList; -import java.util.logging.Level; -import java.util.logging.Logger; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Stack; +import javax.xml.namespace.NamespaceContext; import javax.xml.namespace.QName; -import javax.xml.parsers.DocumentBuilderFactory; -import javax.xml.parsers.ParserConfigurationException; +import javax.xml.stream.XMLEventReader; +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLStreamConstants; import javax.xml.stream.XMLStreamException; import javax.xml.stream.XMLStreamReader; import javax.xml.stream.XMLStreamWriter; +import javax.xml.stream.events.XMLEvent; -import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl; import org.apache.tuscany.sca.contribution.Constants; import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; @@ -40,272 +45,118 @@ import org.apache.tuscany.sca.contribution.resolver.ModelResolver; import org.apache.tuscany.sca.contribution.service.ContributionReadException; import org.apache.tuscany.sca.contribution.service.ContributionResolveException; import org.apache.tuscany.sca.monitor.Monitor; -import org.apache.tuscany.sca.monitor.Problem; -import org.apache.tuscany.sca.monitor.Problem.Severity; -import org.w3c.dom.Document; -import org.w3c.dom.Element; -import org.w3c.dom.NamedNodeMap; -import org.w3c.dom.Node; -import org.w3c.dom.traversal.DocumentTraversal; -import org.w3c.dom.traversal.NodeFilter; -import org.w3c.dom.traversal.NodeIterator; -import org.w3c.dom.traversal.TreeWalker; +import org.apache.tuscany.sca.contribution.processor.xml.XMLEventsStreamReader; public class AnyElementProcessor implements StAXArtifactProcessor<Object> { - private static final QName ANY_ELEMENT = new QName(Constants.XMLSCHEMA_NS, "anyElement"); - - private static final Logger logger = Logger.getLogger(AnyElementProcessor.class.getName()); - private DocumentBuilderFactory documentBuilderFactory; - private Document document; + private static final QName ANY_ELEMENT = new QName(Constants.XMLSCHEMA_NS, + "anyElement"); + + private XMLInputFactory xmlInputFactory; + @SuppressWarnings("unused") private Monitor monitor; - - public AnyElementProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) { - documentBuilderFactory = modelFactories.getFactory(DocumentBuilderFactory.class); + //Map<String, NamespaceContext> map = new HashMap<String, NamespaceContext>(); + + public AnyElementProcessor(ModelFactoryExtensionPoint modelFactories, + Monitor monitor) { + xmlInputFactory = modelFactories.getFactory(XMLInputFactory.class); this.monitor = monitor; } - - public QName getArtifactType() { - return ANY_ELEMENT; - } + public QName getArtifactType() { + return ANY_ELEMENT; + } + + public Class<Object> getModelType() { + return Object.class; + } - public Class<Object> getModelType() { - return Object.class; - } - /** - * Reads the contetns of the unknown elements and generates the DOM + * Reads the contetns of the unknown elements and generates a custom + * implementation of XMLStreamReader i.e. XMLEventsStreamReader + * * @param reader - * @param name * @return * @throws XMLStreamException */ - public Object read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { - - int event = reader.getEventType(); - int level = 0; - ArrayList<String> elementList = new ArrayList<String>(); - document = createDocument(); - - QName name = reader.getName(); - - while(reader.hasNext()){ - switch(event){ - case START_ELEMENT: - elementList.add(reader.getName().getLocalPart()); - if(level == 0){ - generateDOM(reader,null); - level++; - } - else{ - generateDOM(reader,elementList.get(elementList.size()-2).toString()); - } - - break; - case END_ELEMENT: - elementList.remove(reader.getName().getLocalPart()); - } - if(reader.hasNext()){ - event = reader.next(); - } - - if(event == START_ELEMENT || event == END_ELEMENT){ - if(reader.getName().equals(name)){ - break; - } - } - } - return document; - } + @SuppressWarnings("unchecked") + public Object read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { - /** - * Writes unknown portions back to the writer - * @param model - * @param writer - */ - public void write(Object model, XMLStreamWriter writer) { + //Custom variables + String currentElement = null; + List eventsList = new ArrayList(); - if( ! (model instanceof Document)) { - return; - } + Map<String, NamespaceContext> eventContext = new HashMap<String, NamespaceContext>(); - Document doc = (Document)model; try{ - DocumentTraversal traversal = (DocumentTraversal)doc; - TreeWalker walker = traversal.createTreeWalker(doc.getDocumentElement(),NodeFilter.SHOW_ALL, null, true); - writeDOM(walker,writer); - } - catch(Exception e){ - if (logger.isLoggable(Level.SEVERE)) { - logger.log(Level.SEVERE, "Document not created "); - } - error("Document not created",document,e); - } - } - - public void resolve(Object arg0, ModelResolver arg1) throws ContributionResolveException { - - } - - /** - * Method to generate the DOM - * @param reader - * @param parent - * @throws Exception - */ - //private void generateDOM(String elementText, String parent) { - private void generateDOM(XMLStreamReader reader, String parent) { - try{ - String elePrefix = reader.getPrefix(); - String eleQName = reader.getLocalName(); - if (elePrefix != null && elePrefix.length() != 0) { - eleQName = elePrefix + ":" + eleQName; - } + //Cast the block of unknown elements into document + XMLDocumentStreamReader docReader = new XMLDocumentStreamReader(reader); + + XMLEventReader xmlEventReader = xmlInputFactory.createXMLEventReader(docReader); - Element element = document.createElementNS(reader.getNamespaceURI(), eleQName); + while (xmlEventReader.hasNext()) { + XMLEvent event = xmlEventReader.nextEvent(); - int attributeCount = reader.getAttributeCount(); - for(int i = 0;i < attributeCount;i++){ - String ns = reader.getAttributeNamespace(i); - String prefix = reader.getAttributePrefix(i); - String qname = reader.getAttributeLocalName(i); - String value = reader.getAttributeValue(i); - if (prefix != null && prefix.length() != 0) { - qname = prefix + ":" + qname; - } - element.setAttributeNS(ns,qname,value); - } - if(parent == null){ - if(document != null){ - document.appendChild(element); + //Populate the eventContext map with the current element's name and corresponding NamesapceContext + if (currentElement != null && !(eventContext.containsKey(currentElement))) { + eventContext.put(currentElement, reader.getNamespaceContext()); } - else{ - if (logger.isLoggable(Level.SEVERE)) { - logger.log(Level.SEVERE, "Document not created "); - } - error("Document not created",document,element); - } - } - else{ - Node parentNode = getParentNode(document,parent); - if(parentNode != null){ - parentNode.appendChild(element); + + //Populate the list with the XMLEvents + eventsList.add(event); + if (event.isStartElement()) { + currentElement = reader.getName().getLocalPart(); } - else{ - if (logger.isLoggable(Level.SEVERE)) { - logger.log(Level.SEVERE, "Parent node not found"); - } - error("Parent node not found",document,parentNode.getNodeName()); + if (event.isEndDocument()) { + return new XMLEventsStreamReader(eventsList, eventContext); } } } catch(Exception e){ e.printStackTrace(); - if (logger.isLoggable(Level.SEVERE)) { - logger.log(Level.SEVERE, "Document not created "); - } - error("Document not created",document,e); } + return null; } /** - * Method to create an empty document - * @return - */ - private Document createDocument() { - try { - document = documentBuilderFactory.newDocumentBuilder().newDocument(); - return document; - } catch (ParserConfigurationException e) { - e.printStackTrace(); - } - return null; - } - - /** - * Method to traverse the DOM structure and write the elements - * @param walker + * Writes unknown portions back to the writer + * + * @param model * @param writer - * @throws XMLStreamException */ - private void writeDOM(TreeWalker walker,XMLStreamWriter writer) throws XMLStreamException { - - Node parent = walker.getCurrentNode(); - - writer.writeStartElement(parent.getPrefix(), parent.getLocalName(), parent.getNamespaceURI()); - - NamedNodeMap attributes = parent.getAttributes(); - - for(int i = 0;i<attributes.getLength();i++){ - writer.writeAttribute(attributes.item(i).getPrefix(), attributes.item(i).getNamespaceURI(), attributes.item(i).getLocalName(), attributes.item(i).getNodeValue()); - } - - for (Node n = walker.firstChild();n != null;n = walker.nextSibling()) { - writeDOM(walker,writer); - } - writer.writeEndElement(); - - walker.setCurrentNode(parent); - } - - /** - * Method to get the Parent node out of the DOM structure - * @param doc - * @param parent - * @return - */ - private Node getParentNode(Node doc,String parent) { - Node parentNode = null; - try{ - DocumentTraversal traversal = (DocumentTraversal)doc; - - CharSequence prefixChar = ":"; - NodeIterator iterator = traversal.createNodeIterator(document.getDocumentElement(), NodeFilter.SHOW_ELEMENT, null, true); - for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) { - String nodeName = n.getNodeName(); - String[] str = null; - if(n.getNodeName().contains(prefixChar)){ - str = nodeName.split(":"); - nodeName = str[str.length-1]; - } - if(parent.equalsIgnoreCase(nodeName)){ - parentNode = n; - } - } - return parentNode; + public void write(Object model, XMLStreamWriter writer) + throws XMLStreamException { + if (!(model instanceof XMLStreamReader)) { + return; } - catch(Exception e){ - e.printStackTrace(); + XMLStreamReader reader = (XMLStreamReader) model; + + int event = reader.getEventType(); + while (reader.hasNext()) { + switch (event) { + case START_ELEMENT: + + writer.writeStartElement(reader.getPrefix(), reader + .getLocalName(), reader.getNamespaceURI()); + for (int i = 1; i <= reader.getAttributeCount(); i++) { + writer.writeAttribute(reader.getAttributePrefix(i), reader.getAttributeNamespace(i), + reader.getAttributeLocalName(i), reader.getAttributeValue(i)); + } + break; + + case END_ELEMENT: + writer.writeEndElement(); + break; + } + if (reader.hasNext()) { + event = reader.next(); + } } - return parentNode; } - - /** - * Marshals exceptions into the monitor - * - * @param problems - * @param message - * @param model - */ - private void error(String message, Object model, Exception ex) { - if (monitor != null) { - Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-validation-messages", Severity.ERROR, model, message, ex); - monitor.problem(problem); - } - } - - /** - * Report a error. - * - * @param problems - * @param message - * @param model - */ - private void error(String message, Object model, Object... messageParameters) { - if (monitor != null) { - Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters); - monitor.problem(problem); - } - } - + + public void resolve(Object model, ModelResolver resolver) + throws ContributionResolveException { + // TODO Auto-generated method stub + + } + } |