From 3d0b89a66a8642c162500f5deac62ec091d3635a Mon Sep 17 00:00:00 2001
From: Ivan Paolillo <ivan.paolillo@gmail.com>
Date: Tue, 21 Jun 2016 18:02:14 +0200
Subject: [PATCH] Add JSON Schema validation

---
 json/.classpath                               | 32 +++++++++++++++++++
 json/.project                                 | 23 +++++++++++++
 json/pom.xml                                  | 25 +++++++++++++++
 .../baeldung/json/schema/JSONSchemaTest.java  | 32 +++++++++++++++++++
 json/src/test/resources/product.json          |  5 +++
 json/src/test/resources/schema.json           | 22 +++++++++++++
 6 files changed, 139 insertions(+)
 create mode 100644 json/.classpath
 create mode 100644 json/.project
 create mode 100644 json/pom.xml
 create mode 100644 json/src/test/java/org/baeldung/json/schema/JSONSchemaTest.java
 create mode 100644 json/src/test/resources/product.json
 create mode 100644 json/src/test/resources/schema.json

diff --git a/json/.classpath b/json/.classpath
new file mode 100644
index 0000000000..4f9b9b5af7
--- /dev/null
+++ b/json/.classpath
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>
diff --git a/json/.project b/json/.project
new file mode 100644
index 0000000000..8424469786
--- /dev/null
+++ b/json/.project
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>json</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>
diff --git a/json/pom.xml b/json/pom.xml
new file mode 100644
index 0000000000..47f1f25aa2
--- /dev/null
+++ b/json/pom.xml
@@ -0,0 +1,25 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.baeldung</groupId>
+    <artifactId>json</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>org.everit.json</groupId>
+            <artifactId>org.everit.json.schema</artifactId>
+            <version>1.3.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+</project>
diff --git a/json/src/test/java/org/baeldung/json/schema/JSONSchemaTest.java b/json/src/test/java/org/baeldung/json/schema/JSONSchemaTest.java
new file mode 100644
index 0000000000..5e8f024ac3
--- /dev/null
+++ b/json/src/test/java/org/baeldung/json/schema/JSONSchemaTest.java
@@ -0,0 +1,32 @@
+package org.baeldung.json.schema;
+
+import org.everit.json.schema.Schema;
+import org.everit.json.schema.ValidationException;
+import org.everit.json.schema.loader.SchemaLoader;
+
+import org.json.JSONObject;
+import org.json.JSONTokener;
+import org.junit.Test;
+
+public class JSONSchemaTest {
+
+    @Test
+    public void validateJSON() {
+
+        JSONObject jsonSchema = new JSONObject(new JSONTokener(JSONSchemaTest.class.getResourceAsStream("/schema.json")));
+        JSONObject jsonSubject = new JSONObject(new JSONTokener(JSONSchemaTest.class.getResourceAsStream("/product.json")));
+
+        Schema schema = SchemaLoader.load(jsonSchema);
+
+        try {
+
+            schema.validate(jsonSubject);
+        }
+
+        catch (ValidationException e) {
+
+            System.out.println(e.getMessage());
+            e.getCausingExceptions().stream().map(ValidationException::getMessage).forEach(System.out::println);
+        }
+    }
+}
diff --git a/json/src/test/resources/product.json b/json/src/test/resources/product.json
new file mode 100644
index 0000000000..7c55d8c7a5
--- /dev/null
+++ b/json/src/test/resources/product.json
@@ -0,0 +1,5 @@
+{
+    "id": 1,
+    "name": "Lampshade",
+    "price": 0
+}
diff --git a/json/src/test/resources/schema.json b/json/src/test/resources/schema.json
new file mode 100644
index 0000000000..7cf99d76e0
--- /dev/null
+++ b/json/src/test/resources/schema.json
@@ -0,0 +1,22 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Product",
+    "description": "A product from the catalog",
+    "type": "object",
+    "properties": {
+        "id": {
+            "description": "The unique identifier for a product",
+            "type": "integer"
+        },
+        "name": {
+            "description": "Name of the product",
+            "type": "string"
+        },
+        "price": {
+            "type": "number",
+            "minimum": 0,
+            "exclusiveMinimum": true
+        }
+    },
+    "required": ["id", "name", "price"]
+}