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>
---
 .../verify/service/JsonValidationService.java      | 136 +++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 verigraph/src/main/java/it/polito/escape/verify/service/JsonValidationService.java

(limited to 'verigraph/src/main/java/it/polito/escape/verify/service/JsonValidationService.java')

diff --git a/verigraph/src/main/java/it/polito/escape/verify/service/JsonValidationService.java b/verigraph/src/main/java/it/polito/escape/verify/service/JsonValidationService.java
new file mode 100644
index 0000000..1ac6c1f
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/service/JsonValidationService.java
@@ -0,0 +1,136 @@
+/*******************************************************************************
+ * 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.service;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Iterator;
+import java.util.Map.Entry;
+
+import org.apache.commons.lang3.text.WordUtils;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+
+public class JsonValidationService {
+
+	private Graph	graph	= new Graph();
+
+	private Node	node	= new Node();
+
+	public JsonValidationService() {
+
+	}
+
+	public JsonValidationService(Graph graph, Node node) {
+		this.graph = graph;
+		this.node = node;
+	}
+
+	public boolean validateFieldAgainstNodeNames(String value) {
+		for (Node node : this.graph.getNodes().values()) {
+			if (node.getName().equals(value))
+				return true;
+		}
+		return false;
+	}
+
+	public void validateFieldsAgainstNodeNames(JsonNode node) {
+		if (node.isTextual()) {
+			boolean isValid = validateFieldAgainstNodeNames(node.asText());
+			if (!isValid) {
+				System.out.println(node.asText() + " is not a valid string!");
+				throw new BadRequestException("String '"	+ node.asText()
+												+ "' is not valid for the configuration of node '" + this.node.getName()
+												+ "'");
+			}
+		}
+		if (node.isArray()) {
+			for (JsonNode object : node) {
+				validateFieldsAgainstNodeNames(object);
+			}
+		}
+		if (node.isObject()) {
+			Iterator<Entry<String, JsonNode>> iter = node.fields();
+
+			while (iter.hasNext()) {
+				Entry<String, JsonNode> item = iter.next();
+				validateFieldsAgainstNodeNames(item.getValue());
+			}
+		}
+
+	}
+
+	public boolean validateNodeConfiguration() {
+		String className = WordUtils.capitalize(node.getFunctional_type()) + "Validator";
+
+		Class<?> validator;
+		try {
+			validator = Class.forName("it.polito.escape.verify.validation." + className);
+		}
+		catch (ClassNotFoundException e) {
+			System.out.println(className	+ " not found, configuration properties of node '" + node.getName()
+								+ "' will be validated against node names");
+			return false;
+		}
+
+		Class<?> graphClass;
+		Class<?> nodeClass;
+		Class<?> configurationClass;
+		try {
+			graphClass = Class.forName("it.polito.escape.verify.model.Graph");
+			nodeClass = Class.forName("it.polito.escape.verify.model.Node");
+			configurationClass = Class.forName("it.polito.escape.verify.model.Configuration");
+		}
+		catch (ClassNotFoundException e) {
+			throw new RuntimeException("Model classes not found");
+		}
+
+		Class<?>[] paramTypes = new Class[3];
+		paramTypes[0] = graphClass;
+		paramTypes[1] = nodeClass;
+		paramTypes[2] = configurationClass;
+
+		String methodName = "validate";
+
+		Object instance;
+		try {
+			instance = validator.newInstance();
+		}
+		catch (InstantiationException e) {
+			throw new RuntimeException("'" + className + "' cannot be instantiated");
+		}
+		catch (IllegalAccessException e) {
+			throw new RuntimeException("Illegal access to '" + className + "' instantiation");
+		}
+
+		Method myMethod;
+		try {
+			myMethod = validator.getDeclaredMethod(methodName, paramTypes);
+		}
+		catch (NoSuchMethodException e) {
+			throw new RuntimeException("'" + methodName + "' method has to be implemented in " + className + " class");
+		}
+		try {
+			myMethod.invoke(instance, graph, node, node.getConfiguration());
+		}
+		catch (IllegalAccessException e) {
+			throw new RuntimeException("Illegal access to '" + methodName + "' method in " + className + " instance");
+		}
+		catch (InvocationTargetException e) {
+			throw new BadRequestException("Validation failed for node '"	+ node.getName() + "': "
+											+ e.getTargetException().getMessage());
+		}
+		return true;
+	}
+}
-- 
cgit 1.2.3-korg