/*
* 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.servicemix.jbi.nmr.flow;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Map;
import javax.jbi.JBIException;
import org.apache.servicemix.finder.FactoryFinder;
import org.apache.servicemix.jbi.util.IntrospectionSupport;
import org.apache.servicemix.jbi.util.URISupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Find a Flow by Name
*
* @version $Revision: 1148530 $
*/
public final class FlowProvider {
private static final transient Logger LOGGER = LoggerFactory.getLogger(FlowProvider.class);
private static final FactoryFinder FINDER = new FactoryFinder("META-INF/services/org/apache/servicemix/jbi/nmr/flow/");
private FlowProvider() {
}
/**
* Locate a Flow
*
* @param flow
* @return the Flow
* @throws JBIException
*/
public static Flow getFlow(String flow) throws JBIException {
Object value;
String flowName = getFlowName(flow);
try {
value = FINDER.newInstance(flowName);
if (value instanceof Flow) {
String query = getQuery(flow);
if (query != null) {
Map map = URISupport.parseQuery(query);
if (map != null && !map.isEmpty()) {
IntrospectionSupport.setProperties(value, map);
}
}
return (Flow) value;
}
throw new JBIException("No implementation found for: " + flow);
} catch (IllegalAccessException e) {
LOGGER.error("getFlow(" + flow + " failed: " + e, e);
throw new JBIException(e);
} catch (InstantiationException e) {
LOGGER.error("getFlow(" + flow + " failed: " + e, e);
throw new JBIException(e);
} catch (IOException e) {
LOGGER.error("getFlow(" + flow + " failed: " + e, e);
throw new JBIException(e);
} catch (ClassNotFoundException e) {
LOGGER.error("getFlow(" + flow + " failed: " + e, e);
throw new JBIException(e);
} catch (URISyntaxException e) {
LOGGER.error("getFlow(" + flow + " failed: " + e, e);
throw new JBIException(e);
}
}
public static String getFlowName(String str) {
String result = str;
int index = str.indexOf('?');
if (index >= 0) {
result = str.substring(0, index);
}
return result;
}
protected static String getQuery(String str) {
String result = null;
int index = str.indexOf('?');
if (index >= 0 && (index + 1) < str.length()) {
result = str.substring(index + 1);
}
return result;
}
}