File	Doc	Category	Size	Date	Package
SourceTreeManager.java	API Doc	Java SE 5 API	11081	Fri Aug 26 14:56:06 BST 2005	com.sun.org.apache.xpath.internal

SourceTreeManager

• java.lang.Object

Fields Summary
private Vector	m_sourceTree Vector of SourceTree objects that this manager manages.
URIResolver	m_uriResolver The TrAX URI resolver used to obtain source trees.

Constructors Summary

Methods Summary
public java.lang.String	findURIFromDoc(int owner) Given a document, find the URL associated with that document. param owner Document that was previously processed by this liaison. return The base URI of the owner argument. int n = m_sourceTree.size(); for (int i = 0; i < n; i++) { SourceTree sTree = (SourceTree) m_sourceTree.elementAt(i); if (owner == sTree.m_root) return sTree.m_url; } return null;
public int	getNode(javax.xml.transform.Source source) Given a Source object, find the node associated with it. param source The Source object to act as the key. return The node that is associated with the Source, or null if not found. // if (source instanceof DOMSource) // return ((DOMSource) source).getNode(); // TODO: Not sure if the BaseID is really the same thing as the ID. String url = source.getSystemId(); if (null == url) return DTM.NULL; int n = m_sourceTree.size(); // System.out.println("getNode: "+n); for (int i = 0; i < n; i++) { SourceTree sTree = (SourceTree) m_sourceTree.elementAt(i); // System.out.println("getNode - url: "+url); // System.out.println("getNode - sTree.m_url: "+sTree.m_url); if (url.equals(sTree.m_url)) return sTree.m_root; } // System.out.println("getNode - returning: "+node); return DTM.NULL;
public int	getSourceTree(javax.xml.transform.Source source, javax.xml.transform.SourceLocator locator, com.sun.org.apache.xpath.internal.XPathContext xctxt) Get the source tree from the input source. param source The Source object that should identify the desired node. param locator The location of the caller, for diagnostic purposes. return non-null reference to a node. throws TransformerException if the Source argument can't be resolved to a node. int n = getNode(source); if (DTM.NULL != n) return n; n = parseToNode(source, locator, xctxt); if (DTM.NULL != n) putDocumentInCache(n, source); return n;
public int	getSourceTree(java.lang.String base, java.lang.String urlString, javax.xml.transform.SourceLocator locator, com.sun.org.apache.xpath.internal.XPathContext xctxt) Get the source tree from the a base URL and a URL string. param base The base URI to use if the urlString is relative. param urlString An absolute or relative URL string. param locator The location of the caller, for diagnostic purposes. return should be a non-null reference to the node identified by the base and urlString. throws TransformerException If the URL can not resolve to a node. // System.out.println("getSourceTree"); try { Source source = this.resolveURI(base, urlString, locator); // System.out.println("getSourceTree - base: "+base+", urlString: "+urlString+", source: "+source.getSystemId()); return getSourceTree(source, locator, xctxt); } catch (IOException ioe) { throw new TransformerException(ioe.getMessage(), locator, ioe); } /* catch (TransformerException te) { throw new TransformerException(te.getMessage(), locator, te); }*/
public javax.xml.transform.URIResolver	getURIResolver() Get the object that will be used to resolve URIs used in document(), etc. return An object that implements the URIResolver interface, or null. return m_uriResolver;
public static org.xml.sax.XMLReader	getXMLReader(javax.xml.transform.Source inputSource, javax.xml.transform.SourceLocator locator) This method returns the SAX2 parser to use with the InputSource obtained from this URI. It may return null if any SAX2-conformant XML parser can be used, or if getInputSource() will also return null. The parser must be free for use (i.e. not currently in use for another parse(). param inputSource The value returned from the URIResolver. returns a SAX2 XMLReader to use to resolve the inputSource argument. param locator The location of the original caller, for diagnostic purposes. return non-null XMLReader reference ready to parse. throws TransformerException if the reader can not be created. try { XMLReader reader = (inputSource instanceof SAXSource) ? ((SAXSource) inputSource).getXMLReader() : null; if (null == reader) { try { javax.xml.parsers.SAXParserFactory factory= javax.xml.parsers.SAXParserFactory.newInstance(); factory.setNamespaceAware( true ); javax.xml.parsers.SAXParser jaxpParser= factory.newSAXParser(); reader=jaxpParser.getXMLReader(); } catch( javax.xml.parsers.ParserConfigurationException ex ) { throw new org.xml.sax.SAXException( ex ); } catch( javax.xml.parsers.FactoryConfigurationError ex1 ) { throw new org.xml.sax.SAXException( ex1.toString() ); } catch( NoSuchMethodError ex2 ) { } catch (AbstractMethodError ame){} if(null == reader) reader = XMLReaderFactory.createXMLReader(); } try { reader.setFeature("http://xml.org/sax/features/namespace-prefixes", true); } catch (org.xml.sax.SAXException se) { // What can we do? // TODO: User diagnostics. } return reader; } catch (org.xml.sax.SAXException se) { throw new TransformerException(se.getMessage(), locator, se); }
public int	parseToNode(javax.xml.transform.Source source, javax.xml.transform.SourceLocator locator, com.sun.org.apache.xpath.internal.XPathContext xctxt) Try to create a DOM source tree from the input source. param source The Source object that identifies the source node. param locator The location of the caller, for diagnostic purposes. return non-null reference to node identified by the source argument. throws TransformerException if the source argument can not be resolved to a source node. try { Object xowner = xctxt.getOwnerObject(); DTM dtm; if(null != xowner && xowner instanceof com.sun.org.apache.xml.internal.dtm.DTMWSFilter) { dtm = xctxt.getDTM(source, false, (com.sun.org.apache.xml.internal.dtm.DTMWSFilter)xowner, false, true); } else { dtm = xctxt.getDTM(source, false, null, false, true); } return dtm.getDocument(); } catch (Exception e) { //e.printStackTrace(); throw new TransformerException(e.getMessage(), locator, e); }
public void	putDocumentInCache(int n, javax.xml.transform.Source source) Put the source tree root node in the document cache. TODO: This function needs to be a LOT more sophisticated. param n The node to cache. param source The Source object to cache. int cachedNode = getNode(source); if (DTM.NULL != cachedNode) { if (!(cachedNode == n)) throw new RuntimeException( "Programmer's Error! " + "putDocumentInCache found reparse of doc: " + source.getSystemId()); return; } if (null != source.getSystemId()) { m_sourceTree.addElement(new SourceTree(n, source.getSystemId())); }
public void	removeDocumentFromCache(int n) JJK: Support kluge in ElemForEach. TODO: This function is highly dangerous. Cache management must be improved. param n The node to remove. if(DTM.NULL ==n) return; for(int i=m_sourceTree.size()-1;i>=0;--i) { SourceTree st=(SourceTree)m_sourceTree.elementAt(i); if(st!=null && st.m_root==n) { m_sourceTree.removeElementAt(i); return; } }
public void	reset() Reset the list of SourceTree objects that this manager manages. m_sourceTree = new Vector();
public javax.xml.transform.Source	resolveURI(java.lang.String base, java.lang.String urlString, javax.xml.transform.SourceLocator locator) This will be called by the processor when it encounters an xsl:include, xsl:import, or document() function. param base The base URI that should be used. param urlString Value from an xsl:import or xsl:include's href attribute, or a URI specified in the document() function. return a Source that can be used to process the resource. throws IOException throws TransformerException Source source = null; if (null != m_uriResolver) { source = m_uriResolver.resolve(urlString, base); } if (null == source) { String uri = SystemIDResolver.getAbsoluteURI(urlString, base); source = new StreamSource(uri); } return source;
public void	setURIResolver(javax.xml.transform.URIResolver resolver) Set an object that will be used to resolve URIs used in document(), etc. param resolver An object that implements the URIResolver interface, or null. m_uriResolver = resolver;