Class DirResourceSet

java/org/apache/catalina/webresources/DirResourceSet.java:47–422

Represents a org.apache.catalina.WebResourceSet based on a directory.

 * Represents a {@link org.apache.catalina.WebResourceSet} based on a directory.
 */
public class DirResourceSet extends AbstractFileResourceSet implements WebResourceLockSet {

    private static final Log log = LogFactory.getLog(DirResourceSet.class);

    private KeyedReentrantReadWriteLock resourceLocksByPath = new KeyedReentrantReadWriteLock();


    /**
     * A no argument constructor is required for this to work with the digester.
     */
    public DirResourceSet() {
        super("/");
    }

    /**
     * Creates a new {@link org.apache.catalina.WebResourceSet} based on a directory.
     *
     * @param root         The {@link WebResourceRoot} this new {@link org.apache.catalina.WebResourceSet} will be added
     *                         to.
     * @param webAppMount  The path within the web application at which this {@link org.apache.catalina.WebResourceSet}
     *                         will be mounted. For example, to add a directory of JARs to a web application, the
     *                         directory would be mounted at "/WEB-INF/lib/"
     * @param base         The absolute path to the directory on the file system from which the resources will be
     *                         served.
     * @param internalPath The path within this new {@link org.apache.catalina.WebResourceSet} where resources will be
     *                         served from.
     */
    public DirResourceSet(WebResourceRoot root, String webAppMount, String base, String internalPath) {
        super(internalPath);
        setRoot(root);
        setWebAppMount(webAppMount);
        setBase(base);

        if (root.getContext().getAddWebinfClassesResources()) {
            File f = new File(base, internalPath);
            f = new File(f, "/WEB-INF/classes/META-INF/resources");

            if (f.isDirectory()) {
                root.createWebResourceSet(ResourceSetType.RESOURCE_JAR, "/", f.getAbsolutePath(), null, "/");
            }
        }

        if (getRoot().getState().isAvailable()) {
            try {
                start();
            } catch (LifecycleException e) {
                throw new IllegalStateException(e);
            }
        }
    }


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