Examples of org.apache.catalina.WebResourceRoot

org.apache.catalina.WebResourceRoot
Represents the complete set of resources for a web application. The resources for a web application comprise of multiple ResourceSets and when looking for a Resource, the ResourceSets are processed in the following order:
1. Pre - Resources defined by the <PreResource> element in the web application's context.xml. Resources will be searched in the order they were specified.
2. Main - The main resources for the web application - i.e. the WAR or the directory containing the expanded WAR
3. JARs - Resource JARs as defined by the Servlet specification. JARs will be searched in the order they were added to the ResourceRoot.
4. Post - Resources defined by the <PostResource> element in the web application's context.xml. Resources will be searched in the order they were specified.
The following conventions should be noted:
- Write operations (including delete) will only be applied to the main ResourceSet. The write operation will fail if the presence of a Resource in one of the other ResourceSets effectively makes the operation on the main ResourceSet a NO-OP.
- A file in a ResourceSet will hide a directory of the same name (and all the contents of that directory) in a ResourceSet that is later in the search order.
- Only the main ResourceSet may define a META-INF/context.xml since that file defines the Pre- and Post-Resources.
- As per the Servlet specification, any META-INF or WEB-INF directories in a resource JAR will be ignored.
- Pre- and Post-Resources may define WEB-INF/lib and WEB-INF/classes in order to make additional libraries and/or classes available to the web application.
This mechanism replaces and extends the following features that were present in earlier versions:
- Aliases - Replaced by Post-Resources with the addition of support for single files as well as directories and JARs.
- VirtualWebappLoader - Replaced by Pre- and Post-Resources mapped to WEB-INF/lib and WEB-INF/classes
- VirtualDirContext - Replaced by Pre- and Post-Resources
- External repositories - Replaced by Pre- and Post-Resources mapped to WEB-INF/lib and WEB-INF/classes
- Resource JARs - Same feature but implemented using the same mechanism as all the other additional resources.


        String normPath = RequestUtil.normalize(path);
        if (normPath == null)
            return (null);


        WebResourceRoot resources = context.getResources();
        if (resources != null) {
            return resources.getResource(normPath).getURL();
        }


        return null;
    }

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        String normalizedPath = RequestUtil.normalize(path);
        if (normalizedPath == null)
            return (null);


        WebResourceRoot resources = context.getResources();
        if (resources != null) {
            return resources.getResource(normalizedPath).getInputStream();
        }


        return null;
    }

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        String normalizedPath = RequestUtil.normalize(path);
        if (normalizedPath == null)
            return (null);


        WebResourceRoot resources = context.getResources();
        if (resources != null) {
            return resources.listWebAppPaths(normalizedPath);
        }


        return null;
    }

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    @Override
    public WebResource getResource(String path) {
        checkPath(path);
        String webAppMount = getWebAppMount();
        WebResourceRoot root = getRoot();
        if (path.startsWith(webAppMount)) {
            File f = file(path.substring(webAppMount.length()), false);
            if (f == null) {
                return new EmptyResource(root, path);
            }

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    @Override
    public final WebResource getResource(String path) {
        checkPath(path);
        String webAppMount = getWebAppMount();
        WebResourceRoot root = getRoot();


        /*
         * Implementation notes
         *
         * The path parameter passed into this method always starts with '/'.

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    @Override
    public WebResource getResource(String path) {
        checkPath(path);


        String webAppMount = getWebAppMount();
        WebResourceRoot root = getRoot();
        if (path.equals(webAppMount)) {
            File f = file("", true);
            if (f == null) {
                return new EmptyResource(root, path);
            }

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    @Override
    public final WebResource getResource(String path) {
        checkPath(path);
        String webAppMount = getWebAppMount();
        WebResourceRoot root = getRoot();


        /*
         * Implementation notes
         *
         * The path parameter passed into this method always starts with '/'.

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        if( log.isDebugEnabled() && workDir != null)
            log.debug(sm.getString("webappLoader.deploy", workDir.getAbsolutePath()));


        classLoader.setWorkDir(workDir);


        WebResourceRoot resources = context.getResources();


        // Setting up the class repository (/WEB-INF/classes), if it exists


        String classesPath = "/WEB-INF/classes";
        WebResource classes = resources.getResource(classesPath);


        if (classes.isDirectory()) {


            if(log.isDebugEnabled())
                log.debug(sm.getString("webappLoader.classDeploy", classesPath,
                        classes.getURL().toExternalForm()));


            // Adding the repository to the class loader
            classLoader.setRepository(classesPath + "/", classes);
            loaderRepositories.add(classesPath + "/" );
        }


        // Setting up the JAR repository (/WEB-INF/lib), if it exists
        // TODO Simplify this in a similar manner to WEB-INF/classes


        String libPath = "/WEB-INF/lib";


        classLoader.setJarPath(libPath);


        WebResource libDir = resources.getResource(libPath);


        if (libDir.isDirectory()) {


            boolean copyJars = false;
            String absoluteLibPath = libDir.getCanonicalPath();


            File destDir = null;


            if (absoluteLibPath != null) {
                destDir = new File(absoluteLibPath);
            } else {
                copyJars = true;
                destDir = new File(workDir, libPath);
                if (!destDir.mkdirs() && !destDir.isDirectory()) {
                    throw new IOException(
                            sm.getString("webappLoader.mkdirFailure"));
                }
            }


            WebResource[] jars = resources.listResources(libPath);
            for (WebResource jar : jars) {


                String jarName = jar.getName();


                if (!jarName.endsWith(".jar"))

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    @Override
    public WebResource getResource(String path) {
        checkPath(path);
        String webAppMount = getWebAppMount();
        WebResourceRoot root = getRoot();
        if (path.startsWith(webAppMount)) {
            File f = file(path.substring(webAppMount.length()), true);
            if (f == null) {
                return new EmptyResource(root, path);
            }

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    @Override
    public WebResource getResource(String path) {
        checkPath(path);


        String webAppMount = getWebAppMount();
        WebResourceRoot root = getRoot();
        if (path.equals(webAppMount)) {
            File f = file("", true);
            if (f == null) {
                return new EmptyResource(root, path);
            }

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