--- /dev/null
+/**\r
+ * ============LICENSE_START=======================================================\r
+ * org.onap.aai\r
+ * ================================================================================\r
+ * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.\r
+ * Copyright © 2017-2018 Amdocs\r
+ * ================================================================================\r
+ * Licensed under the Apache License, Version 2.0 (the "License");\r
+ * you may not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ *\r
+ * http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS,\r
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ * ============LICENSE_END=========================================================\r
+ */\r
+package org.onap.crud.parser.util;\r
+\r
+import java.util.ArrayList;\r
+import java.util.List;\r
+import java.util.regex.Matcher;\r
+import java.util.regex.Pattern;\r
+import javax.ws.rs.core.Response.Status;\r
+import org.onap.crud.entity.Edge;\r
+import org.onap.crud.entity.Vertex;\r
+import org.onap.crud.exception.CrudException;\r
+\r
+/**\r
+ * Utility Class to extract data from the Edge Payload\r
+ */\r
+public class EdgePayloadUtil {\r
+\r
+ private static final Pattern URL_MATCHER = Pattern.compile("services/inventory/(.*)/(.*)/(.*)");\r
+\r
+ private static Matcher getVertexMatcher(String vertex) throws CrudException {\r
+ Matcher matcher = URL_MATCHER.matcher(vertex);\r
+ if (!matcher.matches()) {\r
+ throw new CrudException("Invalid Source/Target Urls", Status.BAD_REQUEST);\r
+ }\r
+ return matcher;\r
+ }\r
+\r
+ /**\r
+ * Returns the node type from a vertex on the edge payload\r
+ *\r
+ * @param vertex\r
+ * @return\r
+ * @throws CrudException\r
+ */\r
+ public static String getVertexNodeType(String vertex) throws CrudException {\r
+ return getVertexMatcher(vertex).group(2);\r
+ }\r
+\r
+ /**\r
+ * Returns the node id from a vertex on the edge payload\r
+ *\r
+ * @param vertex\r
+ * @return\r
+ * @throws CrudException\r
+ */\r
+ public static String getVertexNodeId(String vertex) throws CrudException {\r
+ return getVertexMatcher(vertex).group(3);\r
+ }\r
+\r
+ /**\r
+ * Generates a key based on the edge payload content\r
+ *\r
+ * @param source\r
+ * @param target\r
+ * @param type\r
+ * @return\r
+ * @throws CrudException\r
+ */\r
+ public static String generateEdgeKey(String source, String target, String type) throws CrudException {\r
+ return getVertexNodeType(source) + ":" + getVertexNodeType(target) + ":" + type;\r
+ }\r
+\r
+ /**\r
+ * Returns an Edge Builder object from the payload properties\r
+ *\r
+ * @param source\r
+ * @param target\r
+ * @param type\r
+ * @return\r
+ * @throws CrudException\r
+ */\r
+ public static Edge.Builder getBuilderFromEdgePayload(String source, String target, String type) throws CrudException {\r
+ Edge.Builder edgeBuilder = new Edge.Builder(type);\r
+\r
+ edgeBuilder.source(new Vertex.Builder(getVertexNodeType(source)).id(getVertexNodeId(source)).build());\r
+ edgeBuilder.target(new Vertex.Builder(getVertexNodeType(target)).id(getVertexNodeId(target)).build());\r
+\r
+ return edgeBuilder;\r
+ }\r
+\r
+ /**\r
+ * Returns an Edge Builder object from an Edge object properties\r
+ *\r
+ * @param edge\r
+ * @return\r
+ */\r
+ public static Edge.Builder getBuilderFromEdge(Edge edge) {\r
+ Edge.Builder edgeBuilder = new Edge.Builder(edge.getType()).id(edge.getId().get());\r
+\r
+ edgeBuilder\r
+ .source(new Vertex.Builder(edge.getSource().getType()).id(edge.getSource().getId().get()).build());\r
+ edgeBuilder\r
+ .target(new Vertex.Builder(edge.getTarget().getType()).id(edge.getTarget().getId().get()).build());\r
+\r
+ return edgeBuilder;\r
+ }\r
+\r
+ /**\r
+ * Filter Edges by its source/target vertex type and the edge type\r
+ *\r
+ * @param sourceTargetType the new Edge source/target type\r
+ * @param type\r
+ * @param edges\r
+ * @return List<Edge>\r
+ */\r
+ public static List<Edge> filterEdgesByRelatedVertexAndType(String sourceTargetType, String type, List<Edge> edges) {\r
+ List<Edge> filteredEdges = new ArrayList<>();\r
+ if (edges != null) {\r
+ for (Edge edge : edges) {\r
+ if (doesEdgeTypeMatch(edge, type) && doesEdgeSourceTargetTypeMatch(edge, sourceTargetType)) {\r
+ filteredEdges.add(edge);\r
+ }\r
+ }\r
+ }\r
+ return filteredEdges;\r
+ }\r
+\r
+ private static boolean doesEdgeTypeMatch(Edge edge, String type) {\r
+ return edge.getType() != null && edge.getType().equals(type);\r
+ }\r
+\r
+ private static boolean doesEdgeSourceTargetTypeMatch(Edge edge, String sourceTargetType) {\r
+ return (edge.getSource().getType() != null && edge.getSource().getType().equals(sourceTargetType))\r
+ || ((edge.getTarget().getType() != null && edge.getTarget().getType().equals(sourceTargetType)));\r
+ }\r
+}\r