-Documentation

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James Newton-King
2012-08-13 23:51:27 +12:00
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<developerConceptualDocument xmlns="http://ddue.schemas.microsoft.com/authoring/2003/5" xmlns:xlink="http://www.w3.org/1999/xlink">
<introduction>
<para>Json.NET supports the JSON Schema standard via the <codeEntityReference>T:Newtonsoft.Json.Schema.JsonSchema</codeEntityReference>
and <codeEntityReference>T:Newtonsoft.Json.JsonValidatingReader</codeEntityReference> classes and sits under
the <codeEntityReference>N:Newtonsoft.Json.Schema</codeEntityReference> namespae.</para>
and <codeEntityReference>T:Newtonsoft.Json.JsonValidatingReader</codeEntityReference> classes. Its functionality sits under
the <codeEntityReference>N:Newtonsoft.Json.Schema</codeEntityReference> namespace.</para>
<para>JSON Schema is used to validate the structure and
data types of a piece of JSON, similar to XML Schema for XML. Read more about JSON Schema at
<externalLink>
@@ -0,0 +1,184 @@
#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion
#if !(NET35 || NET20 || PORTABLE)
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Dynamic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using Newtonsoft.Json.Converters;
using Newtonsoft.Json.Linq;
#if !NETFX_CORE
using NUnit.Framework;
#else
using Microsoft.VisualStudio.TestPlatform.UnitTestFramework;
using TestFixture = Microsoft.VisualStudio.TestPlatform.UnitTestFramework.TestClassAttribute;
using Test = Microsoft.VisualStudio.TestPlatform.UnitTestFramework.TestMethodAttribute;
#endif
using Newtonsoft.Json.Schema;
using Newtonsoft.Json.Serialization;
using Newtonsoft.Json.Tests.TestObjects;
using Newtonsoft.Json.Utilities;
using System.Globalization;
using ErrorEventArgs = Newtonsoft.Json.Serialization.ErrorEventArgs;
using File = System.IO.File;
namespace Newtonsoft.Json.Tests.Documentation
{
public class JsonSchemaTests
{
public void IsValidBasic()
{
#region IsValidBasic
string schemaJson = @"{
'description': 'A person',
'type': 'object',
'properties':
{
'name': {'type':'string'},
'hobbies': {
'type': 'array',
'items': {'type':'string'}
}
}
}";
JsonSchema schema = JsonSchema.Parse(schemaJson);
JObject person = JObject.Parse(@"{
'name': 'James',
'hobbies': ['.NET', 'Blogging', 'Reading', 'Xbox', 'LOLCATS']
}");
bool valid = person.IsValid(schema);
// true
#endregion
}
public void IsValidMessages()
{
string schemaJson = @"{
'description': 'A person',
'type': 'object',
'properties':
{
'name': {'type':'string'},
'hobbies': {
'type': 'array',
'items': {'type':'string'}
}
}
}";
#region IsValidMessages
JsonSchema schema = JsonSchema.Parse(schemaJson);
JObject person = JObject.Parse(@"{
'name': null,
'hobbies': ['Invalid content', 0.123456789]
}");
IList<string> messages;
bool valid = person.IsValid(schema, out messages);
// false
// Invalid type. Expected String but got Null. Line 2, position 21.
// Invalid type. Expected String but got Float. Line 3, position 51.
#endregion
}
public void JsonValidatingReader()
{
string schemaJson = "{}";
#region JsonValidatingReader
string json = @"{
'name': 'James',
'hobbies': ['.NET', 'Blogging', 'Reading', 'Xbox', 'LOLCATS']
}";
JsonTextReader reader = new JsonTextReader(new StringReader(json));
JsonValidatingReader validatingReader = new JsonValidatingReader(reader);
validatingReader.Schema = JsonSchema.Parse(schemaJson);
IList<string> messages = new List<string>();
validatingReader.ValidationEventHandler += (o, a) => messages.Add(a.Message);
JsonSerializer serializer = new JsonSerializer();
Person p = serializer.Deserialize<Person>(validatingReader);
#endregion
}
public void LoadJsonSchema()
{
#region LoadJsonSchema
// load from a string
JsonSchema schema1 = JsonSchema.Parse(@"{'type':'object'}");
// load from a file
using (TextReader reader = File.OpenText(@"c:\schema\Person.json"))
{
JsonSchema schema2 = JsonSchema.Read(new JsonTextReader(reader));
// do stuff
}
#endregion
}
public void ManuallyCreateJsonSchema()
{
#region ManuallyCreateJsonSchema
JsonSchema schema = new JsonSchema();
schema.Type = JsonSchemaType.Object;
schema.Properties = new Dictionary<string, JsonSchema>
{
{"name", new JsonSchema {Type = JsonSchemaType.String}},
{
"hobbies", new JsonSchema
{
Type = JsonSchemaType.Array,
Items = new List<JsonSchema> { new JsonSchema {Type = JsonSchemaType.String} }
}
},
};
JObject person = JObject.Parse(@"{
'name': 'James',
'hobbies': ['.NET', 'Blogging', 'Reading', 'Xbox', 'LOLCATS']
}");
bool valid = person.IsValid(schema);
// true
#endregion
Assert.IsTrue(valid);
}
}
}
#endif