| /* |
| * 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.pig.test.utils.dotGraph; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * This represents an edge in DOT format. |
| * An edge in DOT can have attributes but we're not interested |
| */ |
| public class DotEdge { |
| public DotNode fromNode; |
| public DotNode toNode; |
| public Map<String, String> attributes = new HashMap<String, String>(); |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(fromNode.name + " -> " + toNode.name); |
| if (attributes.size() > 0) { |
| int index = 0; |
| sb.append(" ["); |
| for (Map.Entry<String, String> attr : attributes.entrySet()) { |
| sb.append(attr.getKey() + "=" + attr.getValue()); |
| if (index < attributes.size() - 1) |
| sb.append(", "); |
| index++; |
| } |
| sb.append("]"); |
| } |
| return sb.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (other instanceof DotEdge) { |
| DotEdge edge = (DotEdge) other; |
| return fromNode.equals(edge.fromNode) && toNode.equals(edge.toNode); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return fromNode.hashCode() * toNode.hashCode(); |
| } |
| } |