Examples of org.apache.tomcat.JarScanner

org.apache.tomcat.JarScanner
Scans a web application and classloader hierarchy for JAR files. Uses include TLD scanning and web-fragment.xml scanning. Uses a call-back mechanism so the caller can process each JAR found.

        
        // Stage 3a - TLDs under WEB-INF (not lib or classes)
        tldScanResourcePaths(WEB_INF);


        // Stages 3b & 4
        JarScanner jarScanner = context.getJarScanner();
        jarScanner.scan(context.getServletContext(),
                context.getLoader().getClassLoader(),
                new TldJarScannerCallback(), noTldJars);
        
        // Now add all the listeners we found to the listeners for this context
        String list[] = getTldListeners();

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     * 
     * @return A map of JAR name to processed web fragment (if any)
     */
    protected Map<String,WebXml> processJarsForWebFragments() {
        
        JarScanner jarScanner = context.getJarScanner();
        FragmentJarScannerCallback callback = new FragmentJarScannerCallback();
        
        jarScanner.scan(context.getServletContext(),
                context.getLoader().getClassLoader(), callback, null);
        
        return callback.getFragments();
    }

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        if (initialized) return;
        try {
            tldScanWebXml();
            tldScanResourcePaths(WEB_INF);
            
            JarScanner jarScanner = JarScannerFactory.getJarScanner(ctxt);
            if (jarScanner != null) {
                jarScanner.scan(ctxt,
                        Thread.currentThread().getContextClassLoader(),
                        new TldJarScannerCallback(), noTldJars);
            }


            initialized = true;

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     * 
     * @return A map of JAR name to processed web fragment (if any)
     */
    protected Map<String,WebXml> processJarsForWebFragments() {
        
        JarScanner jarScanner = context.getJarScanner();
        FragmentJarScannerCallback callback = new FragmentJarScannerCallback();
        
        jarScanner.scan(context.getServletContext(),
                context.getLoader().getClassLoader(), callback, null);
        
        return callback.getFragments();
    }

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        // Stage 3a - TLDs under WEB-INF (not lib or classes)
        tldScanResourcePaths(WEB_INF);


        // Stages 3b & 4
        JarScanner jarScanner = context.getJarScanner();
        jarScanner.scan(context.getServletContext(),
                context.getLoader().getClassLoader(),
                new TldJarScannerCallback(), noTldJars);
        
        // Now add all the listeners we found to the listeners for this context
        String list[] = getTldListeners();

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    /**
     * Obtain the {@link JarScanner} associated with the specified {@link
     * ServletContext}. It is obtained via a context parameter.
     */
    public static JarScanner getJarScanner(ServletContext ctxt) {
        JarScanner jarScanner = 
            (JarScanner) ctxt.getAttribute(JarScanner.class.getName());
        if (jarScanner == null) {
            ctxt.log(Localizer.getMessage("jsp.warning.noJarScanner"));
            jarScanner = new StandardJarScanner();
        }

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        if (initialized) return;
        try {
            tldScanWebXml();
            tldScanResourcePaths(WEB_INF);
            
            JarScanner jarScanner = JarScannerFactory.getJarScanner(ctxt);
            if (jarScanner != null) {
                jarScanner.scan(ctxt,
                        Thread.currentThread().getContextClassLoader(),
                        new TldJarScannerCallback(), noTldJars);
            }


            initialized = true;

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     *
     * @return A map of JAR name to processed web fragment (if any)
     */
    protected Map<String,WebXml> processJarsForWebFragments(WebXml application) {


        JarScanner jarScanner = context.getJarScanner();
        boolean delegate = false;
        if (context instanceof StandardContext) {
            delegate = ((StandardContext) context).getDelegate();
        }
        boolean parseRequired = true;
        Set<String> absoluteOrder = application.getAbsoluteOrdering();
        if (absoluteOrder != null && absoluteOrder.isEmpty() &&
                !context.getXmlValidation()) {
            // Skip parsing when there is an empty absolute ordering and
            // validation is not enabled
            parseRequired = false;
        }
        FragmentJarScannerCallback callback =
                new FragmentJarScannerCallback(webXmlParser, delegate, parseRequired);


        jarScanner.scan(JarScanType.PLUGGABILITY,
                context.getServletContext(), callback);


        if (!callback.isOk()) {
            ok = false;
        }

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     * 
     * @return A map of JAR name to processed web fragment (if any)
     */
    protected Map<String,WebXml> processJarsForWebFragments() {
        
        JarScanner jarScanner = context.getJarScanner();
        FragmentJarScannerCallback callback = new FragmentJarScannerCallback();
        
        jarScanner.scan(context.getServletContext(),
                context.getLoader().getClassLoader(), callback, null);
        
        return callback.getFragments();
    }

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     *
     * @return A map of JAR name to processed web fragment (if any)
     */
    protected Map<String,WebXml> processJarsForWebFragments() {


        JarScanner jarScanner = context.getJarScanner();
        FragmentJarScannerCallback callback = new FragmentJarScannerCallback();


        jarScanner.scan(context.getServletContext(),
                context.getLoader().getClassLoader(), callback,
                pluggabilityJarsToSkip);


        return callback.getFragments();
    }

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