Examples with ContentHandler org.xml.sax.ContentHandler used on opensource projects

Example 16 with ContentHandler

use of org.xml.sax.ContentHandler in project nokogiri by sparklemotion.

the class DOM2DTMExt method dispatchToEvents.

/**
     * Directly create SAX parser events from a subtree.
     *
     * @param nodeHandle The node ID.
     * @param ch A non-null reference to a ContentHandler.
     *
     * @throws org.xml.sax.SAXException
     */
public void dispatchToEvents(int nodeHandle, org.xml.sax.ContentHandler ch) throws org.xml.sax.SAXException {
    TreeWalker treeWalker = m_walker;
    ContentHandler prevCH = treeWalker.getContentHandler();
    if (null != prevCH) {
        treeWalker = new TreeWalker(null);
    }
    treeWalker.setContentHandler(ch);
    try {
        Node node = getNode(nodeHandle);
        treeWalker.traverseFragment(node);
    } finally {
        treeWalker.setContentHandler(null);
    }
}

Example 17 with ContentHandler

use of org.xml.sax.ContentHandler in project camel by apache.

the class StAXEndpoint method doStart.

@Override
protected void doStart() throws Exception {
    super.doStart();
    Processor target;
    if (EndpointHelper.isReferenceParameter(contentHandlerClass)) {
        ContentHandler handler = EndpointHelper.resolveReferenceParameter(getCamelContext(), contentHandlerClass.substring(1), ContentHandler.class, true);
        target = new StAXProcessor(handler);
    } else {
        Class<ContentHandler> clazz = getCamelContext().getClassResolver().resolveMandatoryClass(contentHandlerClass, ContentHandler.class);
        target = new StAXProcessor(clazz);
    }
    setProcessor(target);
}

Example 18 with ContentHandler

use of org.xml.sax.ContentHandler in project camel by apache.

the class TikaProducer method doParse.

private Object doParse(Exchange exchange) throws TikaException, IOException, SAXException, TransformerConfigurationException {
    InputStream inputStream = exchange.getIn().getBody(InputStream.class);
    OutputStream result = new ByteArrayOutputStream();
    ContentHandler contentHandler = getContentHandler(this.tikaConfiguration, result);
    ParseContext context = new ParseContext();
    context.set(Parser.class, this.parser);
    Metadata metadata = new Metadata();
    this.parser.parse(inputStream, contentHandler, metadata, context);
    convertMetadataToHeaders(metadata, exchange);
    return result;
}

Example 19 with ContentHandler

use of org.xml.sax.ContentHandler in project j2objc by google.

the class TransformerIdentityImpl method transform.

/**
   * Process the source tree to the output result.
   * @param source  The input for the source tree.
   *
   * @param outputTarget The output target.
   *
   * @throws TransformerException If an unrecoverable error occurs
   * during the course of the transformation.
   */
public void transform(Source source, Result outputTarget) throws TransformerException {
    createResultContentHandler(outputTarget);
    /*
     * According to JAXP1.2, new SAXSource()/StreamSource()
     * should create an empty input tree, with a default root node. 
     * new DOMSource()creates an empty document using DocumentBuilder.
     * newDocument(); Use DocumentBuilder.newDocument() for all 3 situations,
     * since there is no clear spec. how to create an empty tree when
     * both SAXSource() and StreamSource() are used.
     */
    if ((source instanceof StreamSource && source.getSystemId() == null && ((StreamSource) source).getInputStream() == null && ((StreamSource) source).getReader() == null) || (source instanceof SAXSource && ((SAXSource) source).getInputSource() == null && ((SAXSource) source).getXMLReader() == null) || (source instanceof DOMSource && ((DOMSource) source).getNode() == null)) {
        try {
            DocumentBuilderFactory builderF = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = builderF.newDocumentBuilder();
            String systemID = source.getSystemId();
            source = new DOMSource(builder.newDocument());
            // Copy system ID from original, empty Source to new Source
            if (systemID != null) {
                source.setSystemId(systemID);
            }
        } catch (ParserConfigurationException e) {
            throw new TransformerException(e.getMessage());
        }
    }
    try {
        if (source instanceof DOMSource) {
            DOMSource dsource = (DOMSource) source;
            m_systemID = dsource.getSystemId();
            Node dNode = dsource.getNode();
            if (null != dNode) {
                try {
                    if (dNode.getNodeType() == Node.ATTRIBUTE_NODE)
                        this.startDocument();
                    try {
                        if (dNode.getNodeType() == Node.ATTRIBUTE_NODE) {
                            String data = dNode.getNodeValue();
                            char[] chars = data.toCharArray();
                            characters(chars, 0, chars.length);
                        } else {
                            org.apache.xml.serializer.TreeWalker walker;
                            walker = new org.apache.xml.serializer.TreeWalker(this, m_systemID);
                            walker.traverse(dNode);
                        }
                    } finally {
                        if (dNode.getNodeType() == Node.ATTRIBUTE_NODE)
                            this.endDocument();
                    }
                } catch (SAXException se) {
                    throw new TransformerException(se);
                }
                return;
            } else {
                String messageStr = XSLMessages.createMessage(XSLTErrorResources.ER_ILLEGAL_DOMSOURCE_INPUT, null);
                throw new IllegalArgumentException(messageStr);
            }
        }
        InputSource xmlSource = SAXSource.sourceToInputSource(source);
        if (null == xmlSource) {
            //"Can't transform a Source of type "
            throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_CANNOT_TRANSFORM_SOURCE_TYPE, new Object[] { source.getClass().getName() }));
        //+ source.getClass().getName() + "!");
        }
        if (null != xmlSource.getSystemId())
            m_systemID = xmlSource.getSystemId();
        XMLReader reader = null;
        boolean managedReader = false;
        try {
            if (source instanceof SAXSource) {
                reader = ((SAXSource) source).getXMLReader();
            }
            if (null == reader) {
                try {
                    reader = XMLReaderManager.getInstance().getXMLReader();
                    managedReader = true;
                } catch (SAXException se) {
                    throw new TransformerException(se);
                }
            } else {
                try {
                    reader.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
                } catch (org.xml.sax.SAXException se) {
                // We don't care.
                }
            }
            // Get the input content handler, which will handle the 
            // parse events and create the source tree. 
            ContentHandler inputHandler = this;
            reader.setContentHandler(inputHandler);
            if (inputHandler instanceof org.xml.sax.DTDHandler)
                reader.setDTDHandler((org.xml.sax.DTDHandler) inputHandler);
            try {
                if (inputHandler instanceof org.xml.sax.ext.LexicalHandler)
                    reader.setProperty("http://xml.org/sax/properties/lexical-handler", inputHandler);
                if (inputHandler instanceof org.xml.sax.ext.DeclHandler)
                    reader.setProperty("http://xml.org/sax/properties/declaration-handler", inputHandler);
            } catch (org.xml.sax.SAXException se) {
            }
            try {
                if (inputHandler instanceof org.xml.sax.ext.LexicalHandler)
                    reader.setProperty("http://xml.org/sax/handlers/LexicalHandler", inputHandler);
                if (inputHandler instanceof org.xml.sax.ext.DeclHandler)
                    reader.setProperty("http://xml.org/sax/handlers/DeclHandler", inputHandler);
            } catch (org.xml.sax.SAXNotRecognizedException snre) {
            }
            reader.parse(xmlSource);
        } catch (org.apache.xml.utils.WrappedRuntimeException wre) {
            Throwable throwable = wre.getException();
            while (throwable instanceof org.apache.xml.utils.WrappedRuntimeException) {
                throwable = ((org.apache.xml.utils.WrappedRuntimeException) throwable).getException();
            }
            throw new TransformerException(wre.getException());
        } catch (org.xml.sax.SAXException se) {
            throw new TransformerException(se);
        } catch (IOException ioe) {
            throw new TransformerException(ioe);
        } finally {
            if (managedReader) {
                XMLReaderManager.getInstance().releaseXMLReader(reader);
            }
        }
    } finally {
        if (null != m_outputStream) {
            try {
                m_outputStream.close();
            } catch (IOException ioe) {
            }
            m_outputStream = null;
        }
    }
}

Example 20 with ContentHandler

use of org.xml.sax.ContentHandler in project j2objc by google.

the class TransformerImpl method transformToRTF.

/**
   * Given a stylesheet element, create a result tree fragment from it's
   * contents.
   * @param templateParent The template element that holds the fragment.
   * @param dtmFrag The DTM to write the RTF into
   * @return the NodeHandle for the root node of the resulting RTF.
   *
   * @throws TransformerException
   * @xsl.usage advanced
   */
private int transformToRTF(ElemTemplateElement templateParent, DTM dtmFrag) throws TransformerException {
    XPathContext xctxt = m_xcontext;
    ContentHandler rtfHandler = dtmFrag.getContentHandler();
    // Obtain the ResultTreeFrag's root node.
    // NOTE: In SAX2RTFDTM, this value isn't available until after
    // the startDocument has been issued, so assignment has been moved
    // down a bit in the code.
    // not yet reliably = dtmFrag.getDocument();
    int resultFragment;
    // Save the current result tree handler.
    SerializationHandler savedRTreeHandler = this.m_serializationHandler;
    // And make a new handler for the RTF.
    ToSAXHandler h = new ToXMLSAXHandler();
    h.setContentHandler(rtfHandler);
    h.setTransformer(this);
    // Replace the old handler (which was already saved)
    m_serializationHandler = h;
    // use local variable for the current handler
    SerializationHandler rth = m_serializationHandler;
    try {
        rth.startDocument();
        // startDocument is "bottlenecked" in RTH. We need it acted upon immediately,
        // to set the DTM's state as in-progress, so that if the xsl:variable's body causes
        // further RTF activity we can keep that from bashing this DTM.
        rth.flushPending();
        try {
            // Do the transformation of the child elements.
            executeChildTemplates(templateParent, true);
            // Make sure everything is flushed!
            rth.flushPending();
            // Get the document ID. May not exist until the RTH has not only
            // received, but flushed, the startDocument, and may be invalid
            // again after the document has been closed (still debating that)
            // ... so waiting until just before the end seems simplest/safest. 
            resultFragment = dtmFrag.getDocument();
        } finally {
            rth.endDocument();
        }
    } catch (org.xml.sax.SAXException se) {
        throw new TransformerException(se);
    } finally {
        // Restore the previous result tree handler.
        this.m_serializationHandler = savedRTreeHandler;
    }
    return resultFragment;
}