org.apache.camel.component.velocity.CamelVelocityClasspathResourceLoader Maven / Gradle / Ivy
/*
* 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.velocity;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import org.apache.camel.spi.ClassResolver;
import org.apache.camel.util.ObjectHelper;
import org.apache.velocity.exception.ResourceNotFoundException;
import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;
import org.apache.velocity.util.ExtProperties;
/**
* Camel specific {@link ClasspathResourceLoader} that loads resources using the Camel {@link ClassResolver} used by the
* Velocity.
*/
public class CamelVelocityClasspathResourceLoader extends ClasspathResourceLoader {
private ClassResolver resolver;
@Override
public void init(ExtProperties configuration) {
super.init(configuration);
resolver = (ClassResolver) this.rsvc.getProperty("CamelClassResolver");
ObjectHelper.notNull(resolver, "ClassResolver");
}
@Override
public Reader getResourceReader(String name, String encoding) throws ResourceNotFoundException {
InputStream is = resolver.loadResourceAsStream(name);
if (is == null) {
return super.getResourceReader(name, encoding);
} else {
return new InputStreamReader(is);
}
}
}