com.sun.faces.config.configprovider.BaseWebConfigResourceProvider Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of jakarta.faces-api Show documentation

Jakarta Faces defines an MVC framework for building user interfaces for web applications, including UI components, state management, event handing, input validation, page navigation, and support for internationalization and accessibility.

There is a newer version: 4.1.0

Show newest version

/*
 * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.faces.config.configprovider;

import static com.sun.faces.config.WebConfiguration.WebContextInitParameter.JakartaFacesConfigFiles;
import static com.sun.faces.util.Util.split;
import static java.util.Arrays.binarySearch;
import static java.util.logging.Level.WARNING;

import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.Set;
import java.util.logging.Logger;

import com.sun.faces.config.WebConfiguration;
import com.sun.faces.config.WebConfiguration.WebContextInitParameter;
import com.sun.faces.spi.ConfigurationResourceProvider;
import com.sun.faces.util.FacesLogger;

import jakarta.faces.FacesException;
import jakarta.servlet.ServletContext;

/**
 *
 */
public abstract class BaseWebConfigResourceProvider implements ConfigurationResourceProvider {

    private static final Logger LOGGER = FacesLogger.CONFIG.getLogger();

    // ------------------------------ Methods from ConfigurationResourceProvider

    @Override
    public Collection getResources(ServletContext context) {

        WebConfiguration webConfig = WebConfiguration.getInstance(context);
        String paths = webConfig.getOptionValue(getParameter());
        Set urls = new LinkedHashSet<>(6);

        if (paths != null) {
            for (String token : split(context, paths.trim(), getSeparatorRegex())) {
                String path = token.trim();
                if (!isExcluded(path) && path.length() != 0) {
                    URI u = getContextURLForPath(context, path);
                    if (u != null) {
                        urls.add(u);
                    } else {
                        if (LOGGER.isLoggable(WARNING)) {
                            LOGGER.log(WARNING, "jsf.config.web_resource_not_found", new Object[] { path, JakartaFacesConfigFiles.getQualifiedName() });
                        }
                    }
                }

            }
        }

        return urls;
    }

    // ------------------------------------------------------- Protected Methods

    protected abstract WebContextInitParameter getParameter();

    protected abstract String[] getExcludedResources();

    protected abstract String getSeparatorRegex();

    protected URI getContextURLForPath(ServletContext context, String path) {
        try {
            URL url = context.getResource(path);
            if (url != null) {
                return new URI(url.toExternalForm().replaceAll(" ", "%20"));
            }
        } catch (MalformedURLException | URISyntaxException mue) {
            throw new FacesException(mue);
        }

        return null;
    }

    protected boolean isExcluded(String path) {
        return binarySearch(getExcludedResources(), path) >= 0;
    }

}