File	Doc	Category	Size	Date	Package
StylesheetCache.java	API Doc	Example	2851	Sun Sep 02 14:59:04 BST 2001	com.oreilly.javaxslt.util

StylesheetCache

• java.lang.Object

Fields Summary
private static Map	cache

Constructors Summary
private StylesheetCache()

Methods Summary
public static synchronized void	flush(java.lang.String xsltFileName) Flush a specific cached stylesheet from memory. param xsltFileName the file name of the stylesheet to remove. cache.remove(xsltFileName);
public static synchronized void	flushAll() Flush all cached stylesheets from memory, emptying the cache. cache.clear();
public static synchronized javax.xml.transform.Transformer	newTransformer(java.lang.String xsltFileName) Obtain a new Transformer instance for the specified XSLT file name. A new entry will be added to the cache if this is the first request for the specified file name. param xsltFileName the file name of an XSLT stylesheet. return a transformation context for the given stylesheet. File xsltFile = new File(xsltFileName); // determine when the file was last modified on disk long xslLastModified = xsltFile.lastModified(); MapEntry entry = (MapEntry) cache.get(xsltFileName); if (entry != null) { // if the file has been modified more recently than the // cached stylesheet, remove the entry reference if (xslLastModified > entry.lastModified) { entry = null; } } // create a new entry in the cache if necessary if (entry == null) { Source xslSource = new StreamSource(xsltFile); TransformerFactory transFact = TransformerFactory.newInstance(); Templates templates = transFact.newTemplates(xslSource); entry = new MapEntry(xslLastModified, templates); cache.put(xsltFileName, entry); } return entry.templates.newTransformer();