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/*
* 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.tomcat.util.modeler.modules;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.List;
import javax.management.ObjectName;
import org.apache.tomcat.util.modeler.Registry;
/** Source for descriptor data. More sources can be added.
*
*/
public class ModelerSource {
protected Object source;
protected String location;
/** Load data, returns a list of items.
*
* @param registry
* @param location
* @param type
* @param source Introspected object or some other source
* @throws Exception
*/
public List loadDescriptors( Registry registry, String location,
String type, Object source)
throws Exception
{
// TODO
return null;
}
/** Callback from the BaseMBean to notify that an attribute has changed.
* Can be used to implement persistence.
*
* @param oname
* @param name
* @param value
*/
public void updateField( ObjectName oname, String name,
Object value ) {
// nothing by default
}
public void store() {
// nothing
}
protected InputStream getInputStream() throws IOException {
if( source instanceof URL ) {
URL url=(URL)source;
location=url.toString();
return url.openStream();
} else if( source instanceof File ) {
location=((File)source).getAbsolutePath();
return new FileInputStream((File)source);
} else if( source instanceof String) {
location=(String)source;
return new FileInputStream((String)source);
} else if( source instanceof InputStream ) {
return (InputStream)source;
}
return null;
}
}
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