io.undertow.server.handlers.resource.ClassPathResourceManager Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

There is a newer version: 34.0.0.Final

Show newest version

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package io.undertow.server.handlers.resource;

import io.undertow.UndertowMessages;

import java.io.IOException;
import java.net.URL;

/**
 * @author Stuart Douglas
 */
public class ClassPathResourceManager implements ResourceManager {

    /**
     * The class loader that is used to load resources
     */
    private final ClassLoader classLoader;
    /**
     * The prefix that is appended to resources that are to be loaded.
     */
    private final String prefix;

    public ClassPathResourceManager(final ClassLoader loader, final Package p) {
        this(loader, p.getName().replace(".", "/"));
    }

    public ClassPathResourceManager(final ClassLoader classLoader, final String prefix) {
        this.classLoader = classLoader;
        if (prefix.isEmpty()) {
            this.prefix = "";
        } else if (prefix.endsWith("/")) {
            this.prefix = prefix;
        } else {
            this.prefix = prefix + "/";
        }
    }

    public ClassPathResourceManager(final ClassLoader classLoader) {
        this(classLoader, "");
    }

    @Override
    public Resource getResource(final String path) throws IOException {
        if( path == null ) {
            return null;
        }
        String modPath = path;
        if(modPath.startsWith("/")) {
            modPath = path.substring(1);
        }
        final String realPath = prefix + modPath;
        final URL resource = classLoader.getResource(realPath);
        if(resource == null) {
            return null;
        } else {
            return new URLResource(resource, path);
        }

    }

    @Override
    public boolean isResourceChangeListenerSupported() {
        return false;
    }

    @Override
    public void registerResourceChangeListener(ResourceChangeListener listener) {
        throw UndertowMessages.MESSAGES.resourceChangeListenerNotSupported();
    }

    @Override
    public void removeResourceChangeListener(ResourceChangeListener listener) {
        throw UndertowMessages.MESSAGES.resourceChangeListenerNotSupported();
    }


    @Override
    public void close() throws IOException {
    }
}