Examples with StarResource org.apache.sling.resourceresolver.impl.helper.StarResource used on opensource projects

Example 1 with StarResource

use of org.apache.sling.resourceresolver.impl.helper.StarResource in project sling by apache.

the class ResourceResolverImpl method resolveInternal.

private Resource resolveInternal(final HttpServletRequest request, String absPath) {
    // make sure abspath is not null and is absolute
    if (absPath == null) {
        absPath = "/";
    } else if (!absPath.startsWith("/")) {
        absPath = "/" + absPath;
    }
    // check for special namespace prefix treatment
    absPath = unmangleNamespaces(absPath);
    // Assume http://localhost:80 if request is null
    String[] realPathList = { absPath };
    String requestPath;
    if (request != null) {
        requestPath = getMapPath(request.getScheme(), request.getServerName(), request.getServerPort(), absPath);
    } else {
        requestPath = getMapPath("http", "localhost", 80, absPath);
    }
    logger.debug("resolve: Resolving request path {}", requestPath);
    // TODO: might do better to be able to log the loop and help the user
    for (int i = 0; i < 100; i++) {
        String[] mappedPath = null;
        final Iterator<MapEntry> mapEntriesIterator = this.factory.getMapEntries().getResolveMapsIterator(requestPath);
        while (mapEntriesIterator.hasNext()) {
            final MapEntry mapEntry = mapEntriesIterator.next();
            mappedPath = mapEntry.replace(requestPath);
            if (mappedPath != null) {
                if (logger.isDebugEnabled()) {
                    logger.debug("resolve: MapEntry {} matches, mapped path is {}", mapEntry, Arrays.toString(mappedPath));
                }
                if (mapEntry.isInternal()) {
                    // internal redirect
                    logger.debug("resolve: Redirecting internally");
                    break;
                }
                // external redirect
                logger.debug("resolve: Returning external redirect");
                return this.factory.getResourceDecoratorTracker().decorate(new RedirectResource(this, absPath, mappedPath[0], mapEntry.getStatus()));
            }
        }
        // and use the original realPath
        if (mappedPath == null) {
            logger.debug("resolve: Request path {} does not match any MapEntry", requestPath);
            break;
        }
        // if the mapped path is not an URL, use this path to continue
        if (!mappedPath[0].contains("://")) {
            logger.debug("resolve: Mapped path is for resource tree");
            realPathList = mappedPath;
            break;
        }
        // resolve that URI now, using the URI's path as the real path
        try {
            final URI uri = new URI(mappedPath[0], false);
            requestPath = getMapPath(uri.getScheme(), uri.getHost(), uri.getPort(), uri.getPath());
            realPathList = new String[] { uri.getPath() };
            logger.debug("resolve: Mapped path is an URL, using new request path {}", requestPath);
        } catch (final URIException use) {
            // TODO: log and fail
            throw new ResourceNotFoundException(absPath);
        }
    }
    // now we have the real path resolved from virtual host mapping
    // this path may be absolute or relative, in which case we try
    // to resolve it against the search path
    Resource res = null;
    for (int i = 0; res == null && i < realPathList.length; i++) {
        final ParsedParameters parsedPath = new ParsedParameters(realPathList[i]);
        final String realPath = parsedPath.getRawPath();
        // first check whether the requested resource is a StarResource
        if (StarResource.appliesTo(realPath)) {
            logger.debug("resolve: Mapped path {} is a Star Resource", realPath);
            res = new StarResource(this, ensureAbsPath(realPath));
        } else {
            if (realPath.startsWith("/")) {
                // let's check it with a direct access first
                logger.debug("resolve: Try absolute mapped path {}", realPath);
                res = resolveInternal(realPath, parsedPath.getParameters());
            } else {
                final String[] searchPath = getSearchPath();
                for (int spi = 0; res == null && spi < searchPath.length; spi++) {
                    logger.debug("resolve: Try relative mapped path with search path entry {}", searchPath[spi]);
                    res = resolveInternal(searchPath[spi] + realPath, parsedPath.getParameters());
                }
            }
        }
    }
    // if no resource has been found, use a NonExistingResource
    if (res == null) {
        final ParsedParameters parsedPath = new ParsedParameters(realPathList[0]);
        final String resourcePath = ensureAbsPath(parsedPath.getRawPath());
        logger.debug("resolve: Path {} does not resolve, returning NonExistingResource at {}", absPath, resourcePath);
        res = new NonExistingResource(this, resourcePath);
        // SLING-864: if the path contains a dot we assume this to be
        // the start for any selectors, extension, suffix, which may be
        // used for further request processing.
        // the resolution path must be the full path and is already set within
        // the non existing resource
        final int index = resourcePath.indexOf('.');
        if (index != -1) {
            res.getResourceMetadata().setResolutionPathInfo(resourcePath.substring(index));
        }
        res.getResourceMetadata().setParameterMap(parsedPath.getParameters());
    } else {
        logger.debug("resolve: Path {} resolves to Resource {}", absPath, res);
    }
    return this.factory.getResourceDecoratorTracker().decorate(res);
}