/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.camel.component;
import org.apache.camel.Exchange;
import org.apache.camel.impl.DefaultComponent;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
/**
* A useful base class for components which depend on a resource
* such as things like Velocity or XQuery based components.
*
* @version $Revision: 673477 $
*/
public abstract class ResourceBasedComponent extends DefaultComponent<Exchange> {
protected final transient Log log = LogFactory.getLog(getClass());
private ResourceLoader resourceLoader = new DefaultResourceLoader();
public ResourceLoader getResourceLoader() {
return resourceLoader;
}
public void setResourceLoader(ResourceLoader resourceLoader) {
this.resourceLoader = resourceLoader;
}
protected Resource resolveMandatoryResource(String uri) {
Resource resource = getResourceLoader().getResource(uri);
if (resource == null) {
throw new IllegalArgumentException("Could not find resource for URI: " + uri + " using: " + getResourceLoader());
} else {
return resource;
}
}
}