/*
   Copyright 2016 Nationale-Nederlanden

   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 nl.nn.adapterframework.configuration.classloaders;

import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLStreamHandler;
import java.util.HashMap;
import java.util.Map;

import nl.nn.adapterframework.configuration.ConfigurationException;
import nl.nn.adapterframework.util.LogUtil;

import org.apache.log4j.Logger;

public abstract class BytesClassLoader extends ClassLoader implements ReloadAware {
	protected Logger log = LogUtil.getLogger(this);
	protected Map<String, byte[]> resources = new HashMap<String, byte[]>();

	BytesClassLoader(ClassLoader classLoader) {
		super(classLoader);
	}

	@Override
	public URL getResource(String name) {
		byte[] bytes = resources.get(name);
		if (bytes != null) {
			URLStreamHandler urlStreamHandler = new BytesURLStreamHandler(bytes);
			try {
				return new URL(null, "bytesclassloader:" + name, urlStreamHandler);
			} catch (MalformedURLException e) {
				log.error("Could not create url", e);
			}
		}
		return super.getResource(name);
	}

	public void reload() throws ConfigurationException {
		resources.clear();
	}
}