Example usage for org.xml.sax ContentHandler ContentHandler

Introduction

In this page you can find the example usage for org.xml.sax ContentHandler ContentHandler.

Prototype

ContentHandler

Source Link

Usage

From source file:com.sap.prd.mobile.ios.mios.VersionInfoManager.java

private static String getSchemaVersion(final File f) throws SAXException, IOException {

    class StopParsingException extends SAXException {
        private static final long serialVersionUID = -7499102356648608429L;
    }//w  ww.  j  a va 2 s.  c om
    ;

    XMLReader xmlReader = XMLReaderFactory.createXMLReader();

    final InputStream s = new FileInputStream(f);

    final String[] result = new String[1];

    try {

        xmlReader.setContentHandler(new ContentHandler() {

            boolean repositoryTagFound = false;

            @Override
            public void startPrefixMapping(String prefix, String uri) throws SAXException {
            }

            @Override
            public void startElement(String uri, String localName, String qName, Attributes atts)
                    throws SAXException {
                if (localName.equals("versions")) {
                    result[0] = atts.getValue("schemaVersion");

                    if (result[0] != null)
                        throw new StopParsingException();
                }

                if (localName.equals("repository")) {
                    repositoryTagFound = true;
                }
            }

            @Override
            public void startDocument() throws SAXException {
            }

            @Override
            public void skippedEntity(String name) throws SAXException {
            }

            @Override
            public void setDocumentLocator(Locator locator) {
            }

            @Override
            public void processingInstruction(String target, String data) throws SAXException {
            }

            @Override
            public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {
            }

            @Override
            public void endPrefixMapping(String prefix) throws SAXException {
            }

            @Override
            public void endElement(String uri, String localName, String qName) throws SAXException {
            }

            @Override
            public void endDocument() throws SAXException {
                if (!repositoryTagFound && result[0] == null)
                    result[0] = "1.2.0";
            }

            @Override
            public void characters(char[] ch, int start, int length) throws SAXException {
            }
        });

        try {
            xmlReader.parse(new InputSource(s));
        } catch (StopParsingException ex) {
            //OK, StopParsingException is thrown when we know all we need from the document.
        }
    } finally {
        IOUtils.closeQuietly(s);
    }
    return result[0];
}

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From source file:org.apache.openmeetings.db.dao.label.LabelDao.java

private static List<StringLabel> getLabels(InputStream is) throws Exception {
    final List<StringLabel> labels = new ArrayList<StringLabel>();
    SAXParserFactory spf = SAXParserFactory.newInstance();
    spf.setNamespaceAware(true);/*ww w.  j  ava2 s. c  om*/
    try {
        SAXParser parser = spf.newSAXParser();
        XMLReader xr = parser.getXMLReader();
        xr.setContentHandler(new ContentHandler() {
            StringLabel label = null;

            @Override
            public void startPrefixMapping(String prefix, String uri) throws SAXException {
            }

            @Override
            public void startElement(String uri, String localName, String qName, Attributes atts)
                    throws SAXException {
                if (ENTRY_ELEMENT.equals(localName)) {
                    label = new StringLabel(atts.getValue(KEY_ATTR), "");
                }
            }

            @Override
            public void startDocument() throws SAXException {
            }

            @Override
            public void skippedEntity(String name) throws SAXException {
            }

            @Override
            public void setDocumentLocator(Locator locator) {
            }

            @Override
            public void processingInstruction(String target, String data) throws SAXException {
            }

            @Override
            public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {
            }

            @Override
            public void endPrefixMapping(String prefix) throws SAXException {
            }

            @Override
            public void endElement(String uri, String localName, String qName) throws SAXException {
                if (ENTRY_ELEMENT.equals(localName)) {
                    labels.add(label);
                }
            }

            @Override
            public void endDocument() throws SAXException {
            }

            @Override
            public void characters(char[] ch, int start, int length) throws SAXException {
                StringBuilder sb = new StringBuilder(label.getValue());
                sb.append(ch, start, length);
                label.setValue(sb.toString());
            }
        });
        xr.parse(new InputSource(is));
    } catch (Exception e) {
        throw e;
    }
    return labels;
}

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From source file:uk.ac.cam.caret.sakai.rwiki.component.service.impl.XSLTEntityHandler.java

public void parseToSAX(final String toRender, final ContentHandler ch) throws IOException, SAXException {
    /**/*from ww  w. jav  a  2  s. c  om*/
     * create a proxy for the stream, filtering out the start element and
     * end element events
     */
    ContentHandler proxy = new ContentHandler() {
        public void setDocumentLocator(Locator arg0) {
            ch.setDocumentLocator(arg0);
        }

        public void startDocument() throws SAXException {
            // ignore
        }

        public void endDocument() throws SAXException {
            // ignore
        }

        public void startPrefixMapping(String arg0, String arg1) throws SAXException {
            ch.startPrefixMapping(arg0, arg1);
        }

        public void endPrefixMapping(String arg0) throws SAXException {
            ch.endPrefixMapping(arg0);
        }

        public void startElement(String arg0, String arg1, String arg2, Attributes arg3) throws SAXException {
            ch.startElement(arg0, arg1, arg2, arg3);
        }

        public void endElement(String arg0, String arg1, String arg2) throws SAXException {
            ch.endElement(arg0, arg1, arg2);
        }

        public void characters(char[] arg0, int arg1, int arg2) throws SAXException {
            ch.characters(arg0, arg1, arg2);
        }

        public void ignorableWhitespace(char[] arg0, int arg1, int arg2) throws SAXException {
            ch.ignorableWhitespace(arg0, arg1, arg2);
        }

        public void processingInstruction(String arg0, String arg1) throws SAXException {
            ch.processingInstruction(arg0, arg1);
        }

        public void skippedEntity(String arg0) throws SAXException {
            ch.skippedEntity(arg0);
        }

    };
    InputSource ins = new InputSource(new StringReader(toRender));
    XMLReader xmlReader;
    try {
        SAXParser saxParser = saxParserFactory.newSAXParser();

        xmlReader = saxParser.getXMLReader();
    }

    catch (Exception e) {
        log.error("SAXException when creating XMLReader", e); //$NON-NLS-1$
        // rethrow!!
        throw new SAXException(e);
    }
    xmlReader.setContentHandler(proxy);
    xmlReader.parse(ins);
}

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