Examples with XMLStringFactory org.apache.xml.utils.XMLStringFactory used on opensource projects

Example 6 with XMLStringFactory

use of org.apache.xml.utils.XMLStringFactory in project robovm by robovm.

the class DTMManagerDefault method getDTM.

/**
   * Get an instance of a DTM, loaded with the content from the
   * specified source.  If the unique flag is true, a new instance will
   * always be returned.  Otherwise it is up to the DTMManager to return a
   * new instance or an instance that it already created and may be being used
   * by someone else.
   * 
   * A bit of magic in this implementation: If the source is null, unique is true,
   * and incremental and doIndexing are both false, we return an instance of
   * SAX2RTFDTM, which see.
   * 
   * (I think more parameters will need to be added for error handling, and entity
   * resolution, and more explicit control of the RTF situation).
   *
   * @param source the specification of the source object.
   * @param unique true if the returned DTM must be unique, probably because it
   * is going to be mutated.
   * @param whiteSpaceFilter Enables filtering of whitespace nodes, and may
   *                         be null.
   * @param incremental true if the DTM should be built incrementally, if
   *                    possible.
   * @param doIndexing true if the caller considers it worth it to use
   *                   indexing schemes.
   *
   * @return a non-null DTM reference.
   */
public synchronized DTM getDTM(Source source, boolean unique, DTMWSFilter whiteSpaceFilter, boolean incremental, boolean doIndexing) {
    if (DEBUG && null != source)
        System.out.println("Starting " + (unique ? "UNIQUE" : "shared") + " source: " + source.getSystemId());
    XMLStringFactory xstringFactory = m_xsf;
    int dtmPos = getFirstFreeDTMID();
    int documentID = dtmPos << IDENT_DTM_NODE_BITS;
    if ((null != source) && source instanceof DOMSource) {
        DOM2DTM dtm = new DOM2DTM(this, (DOMSource) source, documentID, whiteSpaceFilter, xstringFactory, doIndexing);
        addDTM(dtm, dtmPos, 0);
        return dtm;
    } else {
        boolean isSAXSource = (null != source) ? (source instanceof SAXSource) : true;
        boolean isStreamSource = (null != source) ? (source instanceof StreamSource) : false;
        if (isSAXSource || isStreamSource) {
            XMLReader reader = null;
            SAX2DTM dtm;
            try {
                InputSource xmlSource;
                if (null == source) {
                    xmlSource = null;
                } else {
                    reader = getXMLReader(source);
                    xmlSource = SAXSource.sourceToInputSource(source);
                    String urlOfSource = xmlSource.getSystemId();
                    if (null != urlOfSource) {
                        try {
                            urlOfSource = SystemIDResolver.getAbsoluteURI(urlOfSource);
                        } catch (Exception e) {
                            // %REVIEW% Is there a better way to send a warning?
                            System.err.println("Can not absolutize URL: " + urlOfSource);
                        }
                        xmlSource.setSystemId(urlOfSource);
                    }
                }
                if (source == null && unique && !incremental && !doIndexing) {
                    // Special case to support RTF construction into shared DTM.
                    // It should actually still work for other uses,
                    // but may be slightly deoptimized relative to the base
                    // to allow it to deal with carrying multiple documents.
                    //
                    // %REVIEW% This is a sloppy way to request this mode;
                    // we need to consider architectural improvements.
                    dtm = new SAX2RTFDTM(this, source, documentID, whiteSpaceFilter, xstringFactory, doIndexing);
                } else /**************************************************************
          // EXPERIMENTAL 3/22/02
          else if(JKESS_XNI_EXPERIMENT && m_incremental) {        	
            dtm = new XNI2DTM(this, source, documentID, whiteSpaceFilter,
                              xstringFactory, doIndexing);
          }
          **************************************************************/
                // Create the basic SAX2DTM.
                {
                    dtm = new SAX2DTM(this, source, documentID, whiteSpaceFilter, xstringFactory, doIndexing);
                }
                // Go ahead and add the DTM to the lookup table.  This needs to be
                // done before any parsing occurs. Note offset 0, since we've just
                // created a new DTM.
                addDTM(dtm, dtmPos, 0);
                boolean haveXercesParser = (null != reader) && (reader.getClass().getName().equals("org.apache.xerces.parsers.SAXParser"));
                if (haveXercesParser) {
                    // No matter what.  %REVIEW%
                    incremental = true;
                }
                // build, then we still want to set up the IncrementalSAXSource stuff.
                if (m_incremental && incremental) /* || ((null == reader) && incremental) */
                {
                    IncrementalSAXSource coParser = null;
                    if (haveXercesParser) {
                        // IncrementalSAXSource_Xerces to avoid threading.
                        try {
                            coParser = (IncrementalSAXSource) Class.forName("org.apache.xml.dtm.ref.IncrementalSAXSource_Xerces").newInstance();
                        } catch (Exception ex) {
                            ex.printStackTrace();
                            coParser = null;
                        }
                    }
                    if (coParser == null) {
                        // Create a IncrementalSAXSource to run on the secondary thread.
                        if (null == reader) {
                            coParser = new IncrementalSAXSource_Filter();
                        } else {
                            IncrementalSAXSource_Filter filter = new IncrementalSAXSource_Filter();
                            filter.setXMLReader(reader);
                            coParser = filter;
                        }
                    }
                    /**************************************************************
            // EXPERIMENTAL 3/22/02
            if (JKESS_XNI_EXPERIMENT && m_incremental &&
                  dtm instanceof XNI2DTM && 
                  coParser instanceof IncrementalSAXSource_Xerces) {
                org.apache.xerces.xni.parser.XMLPullParserConfiguration xpc=
                      ((IncrementalSAXSource_Xerces)coParser)
                                           .getXNIParserConfiguration();
              if (xpc!=null) {
                // Bypass SAX; listen to the XNI stream
                ((XNI2DTM)dtm).setIncrementalXNISource(xpc);
              } else {
                  // Listen to the SAX stream (will fail, diagnostically...)
                dtm.setIncrementalSAXSource(coParser);
              }
            } else
            ***************************************************************/
                    // Have the DTM set itself up as IncrementalSAXSource's listener.
                    dtm.setIncrementalSAXSource(coParser);
                    if (null == xmlSource) {
                        // Then the user will construct it themselves.
                        return dtm;
                    }
                    if (null == reader.getErrorHandler()) {
                        reader.setErrorHandler(dtm);
                    }
                    reader.setDTDHandler(dtm);
                    try {
                        // Launch parsing coroutine.  Launches a second thread,
                        // if we're using IncrementalSAXSource.filter().
                        coParser.startParse(xmlSource);
                    } catch (RuntimeException re) {
                        dtm.clearCoRoutine();
                        throw re;
                    } catch (Exception e) {
                        dtm.clearCoRoutine();
                        throw new org.apache.xml.utils.WrappedRuntimeException(e);
                    }
                } else {
                    if (null == reader) {
                        // Then the user will construct it themselves.
                        return dtm;
                    }
                    // not incremental
                    reader.setContentHandler(dtm);
                    reader.setDTDHandler(dtm);
                    if (null == reader.getErrorHandler()) {
                        reader.setErrorHandler(dtm);
                    }
                    try {
                        reader.setProperty("http://xml.org/sax/properties/lexical-handler", dtm);
                    } catch (SAXNotRecognizedException e) {
                    } catch (SAXNotSupportedException e) {
                    }
                    try {
                        reader.parse(xmlSource);
                    } catch (RuntimeException re) {
                        dtm.clearCoRoutine();
                        throw re;
                    } catch (Exception e) {
                        dtm.clearCoRoutine();
                        throw new org.apache.xml.utils.WrappedRuntimeException(e);
                    }
                }
                if (DUMPTREE) {
                    System.out.println("Dumping SAX2DOM");
                    dtm.dumpDTM(System.err);
                }
                return dtm;
            } finally {
                // after creating the DTM.
                if (reader != null && !(m_incremental && incremental)) {
                    reader.setContentHandler(m_defaultHandler);
                    reader.setDTDHandler(m_defaultHandler);
                    reader.setErrorHandler(m_defaultHandler);
                    // Reset the LexicalHandler to null after creating the DTM.
                    try {
                        reader.setProperty("http://xml.org/sax/properties/lexical-handler", null);
                    } catch (Exception e) {
                    }
                }
                releaseXMLReader(reader);
            }
        } else {
            //"Not supported: " + source);
            throw new DTMException(XMLMessages.createXMLMessage(XMLErrorResources.ER_NOT_SUPPORTED, new Object[] { source }));
        }
    }
}