Method getTaglibXml

java/org/apache/jasper/compiler/TldCache.java:133–158

Returns the parsed tag library XML for the given resource path. @param tldResourcePath the TLD resource path @return the parsed tag library XML, or null if not found @throws JasperException if an error occurs during parsing

(TldResourcePath tldResourcePath)

     * @throws JasperException if an error occurs during parsing
     */
    public TaglibXml getTaglibXml(TldResourcePath tldResourcePath) throws JasperException {
        TaglibXmlCacheEntry cacheEntry = tldResourcePathTaglibXmlMap.get(tldResourcePath);
        if (cacheEntry == null) {
            return null;
        }
        long[] lastModified = getLastModified(tldResourcePath);
        if (lastModified[0] != cacheEntry.getWebAppPathLastModified() ||
                lastModified[1] != cacheEntry.getEntryLastModified()) {
            synchronized (cacheEntry) {
                if (lastModified[0] != cacheEntry.getWebAppPathLastModified() ||
                        lastModified[1] != cacheEntry.getEntryLastModified()) {
                    // Re-parse TLD
                    TaglibXml updatedTaglibXml;
                    try {
                        updatedTaglibXml = tldParser.parse(tldResourcePath);
                    } catch (IOException | SAXException e) {
                        throw new JasperException(e);
                    }
                    cacheEntry.setTaglibXml(updatedTaglibXml);
                    cacheEntry.setWebAppPathLastModified(lastModified[0]);
                    cacheEntry.setEntryLastModified(lastModified[1]);
                }
            }
        }
        return cacheEntry.getTaglibXml();
    }


    private long[] getLastModified(TldResourcePath tldResourcePath) {