/* Copyright 2004-2005 Graeme Rocher
 *
 * 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 org.codehaus.groovy.grails.support;

import java.io.IOException;

import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.util.Assert;

/**
 * A ResourceLoader that loads resources from a statically defined base resource.
 *
 * @author Graeme Rocher
 * @since 0.5
 */
public class StaticResourceLoader implements ResourceLoader {

    private Resource baseResource;

    public void setBaseResource(Resource baseResource) {
        this.baseResource = baseResource;
    }

    public Resource getResource(String location) {
        Assert.state(baseResource != null, "Property [baseResource] not set!");

        try {
            return baseResource.createRelative(location);
        }
        catch (IOException e) {
            return null;
        }
    }

    public ClassLoader getClassLoader() {
        return Thread.currentThread().getContextClassLoader();
    }
}
