/**
* 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.view;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.camel.model.ChoiceDefinition;
import org.apache.camel.model.FromDefinition;
import org.apache.camel.model.MulticastDefinition;
import org.apache.camel.model.PipelineDefinition;
import org.apache.camel.model.ProcessorDefinition;
import org.apache.camel.model.RouteDefinition;
import org.apache.camel.model.ToDefinition;
import org.apache.camel.model.language.ExpressionDefinition;
import org.apache.camel.util.CollectionStringBuffer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A base class for Graph processing code of Camel EIPs containing a number of helper methods
*
* @version
*/
public class GraphSupport {
protected final Logger log = LoggerFactory.getLogger(getClass());
protected final Map<Object, NodeData> nodeMap = new HashMap<Object, NodeData>();
private String imagePrefix = "http://camel.apache.org/images/eip/";
protected String getLabel(List<ExpressionDefinition> expressions) {
CollectionStringBuffer buffer = new CollectionStringBuffer();
for (ExpressionDefinition expression : expressions) {
buffer.append(getLabel(expression));
}
return buffer.toString();
}
protected String getLabel(ExpressionDefinition expression) {
if (expression != null) {
return expression.getLabel();
}
return "";
}
protected NodeData getNodeData(Object node) {
Object key = node;
if (node instanceof FromDefinition) {
FromDefinition fromType = (FromDefinition) node;
key = fromType.getUriOrRef();
} else if (node instanceof ToDefinition) {
ToDefinition toType = (ToDefinition) node;
key = toType.getUriOrRef();
}
NodeData answer = null;
if (key != null) {
answer = nodeMap.get(key);
}
if (answer == null) {
String id = "node" + (nodeMap.size() + 1);
answer = new NodeData(id, node, imagePrefix);
nodeMap.put(key, answer);
}
return answer;
}
protected Map<String, List<RouteDefinition>> createRouteGroupMap(List<RouteDefinition> routes) {
Map<String, List<RouteDefinition>> map = new HashMap<String, List<RouteDefinition>>();
for (RouteDefinition route : routes) {
addRouteToMap(map, route);
}
return map;
}
protected void addRouteToMap(Map<String, List<RouteDefinition>> map, RouteDefinition route) {
String group = route.getGroup();
if (group == null) {
group = "Camel Routes";
}
List<RouteDefinition> list = map.get(group);
if (list == null) {
list = new ArrayList<RouteDefinition>();
map.put(group, list);
}
list.add(route);
}
protected boolean isMulticastNode(ProcessorDefinition<?> node) {
return node instanceof MulticastDefinition || node instanceof ChoiceDefinition;
}
/**
* Is the given node a pipeline
*/
protected boolean isPipeline(ProcessorDefinition<?> node) {
if (node instanceof MulticastDefinition) {
return false;
}
if (node instanceof PipelineDefinition) {
return true;
}
if (node.getOutputs().size() > 1) {
// is pipeline if there is more than 1 output and they are all To types
for (Object type : node.getOutputs()) {
if (!(type instanceof ToDefinition)) {
return false;
}
}
return true;
}
return false;
}
public String getImagePrefix() {
return imagePrefix;
}
public void setImagePrefix(String imagePrefix) {
this.imagePrefix = imagePrefix;
}
}