From 53d83244c1bf36af86e90ce5fe758a369f73563e Mon Sep 17 00:00:00 2001
From: "serena.spinoso" <serena.spinoso@polito.it>
Date: Sat, 25 Feb 2017 12:00:55 +0100
Subject: Add verigraph code base

JIRA: PARSER-111

Change-Id: Ie76e14fabbb6c388ebc89d9a15dd3021b25fa892
Signed-off-by: serena.spinoso <serena.spinoso@polito.it>
---
 .../deserializer/GraphCustomDeserializer.java      | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 verigraph/src/main/java/it/polito/escape/verify/deserializer/GraphCustomDeserializer.java

(limited to 'verigraph/src/main/java/it/polito/escape/verify/deserializer/GraphCustomDeserializer.java')

diff --git a/verigraph/src/main/java/it/polito/escape/verify/deserializer/GraphCustomDeserializer.java b/verigraph/src/main/java/it/polito/escape/verify/deserializer/GraphCustomDeserializer.java
new file mode 100644
index 0000000..f71c996
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/deserializer/GraphCustomDeserializer.java
@@ -0,0 +1,87 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.deserializer;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.type.TypeFactory;
+
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.exception.InternalServerErrorException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+
+
+/**
+ * The Class GraphCustomDeserializer is a custom deserializer for a Graph object
+ */
+public class GraphCustomDeserializer extends JsonDeserializer<Graph>{
+
+	/* (non-Javadoc)
+	 * @see com.fasterxml.jackson.databind.JsonDeserializer#deserialize(com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.DeserializationContext)
+	 */
+	@Override
+	public Graph deserialize(JsonParser jp, DeserializationContext context){
+		JsonNode root = null;
+		try {
+			root = jp.getCodec().readTree(jp);
+		}
+		catch (JsonProcessingException e) {
+			throw new InternalServerErrorException("Error parsing a graph: " + e.getMessage());
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("I/O error parsing a graph: " + e.getMessage());
+		}
+
+		JsonNode nodesJson = root.get("nodes");
+
+		if(nodesJson == null)
+			throw new BadRequestException("Invalid graph");
+
+		List<Node> nodeList = null;
+		try {
+			nodeList = new ObjectMapper().readValue(nodesJson.toString(), TypeFactory.defaultInstance().constructCollectionType(List.class, Node.class));
+		}
+		catch (JsonParseException e) {
+			throw new BadRequestException("Invalid content for a graph: " + e.getMessage());
+		}
+		catch (JsonMappingException e) {
+			throw new BadRequestException("Invalid input json structure for a graph: " + e.getMessage());
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("I/O error parsing a graph: " + e.getMessage());
+		}
+
+		Graph graph = new Graph();
+		if(root.get("id") != null){
+			long graphId = root.get("id").asLong();
+			graph.setId(graphId);
+		}
+		Map<Long, Node> nodes = graph.getNodes();
+
+		long numberOfNodes = 0;
+		for (Node node : nodeList){
+			nodes.put(++numberOfNodes, node);
+		}
+		return graph;
+
+	}
+
+}
-- 
cgit 1.2.3-korg