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Andrew Stewart Gibson
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demo samples for json-ld.net
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‎.gitignore

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.vscode
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bin
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obj

‎ObjectDumper.cs

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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Linq;
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using System.Text;
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namespace JsonLD.Demo
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{
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public static class ObjectDumperExtensions
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{
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public static string Dump(this object obj) => ObjectDumper.Dump(obj);
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}
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// thanks: https://stackoverflow.com/a/42264037
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public class ObjectDumper
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{
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public static string Dump(object obj)
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{
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return new ObjectDumper().DumpObject(obj);
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}
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private readonly StringBuilder _dumpBuilder = new StringBuilder();
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private string DumpObject(object obj)
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{
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DumpObject(obj, 0);
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return _dumpBuilder.ToString();
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}
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private void DumpObject(object obj, int nestingLevel = 0)
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{
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var nestingSpaces = new String('\t', nestingLevel); //"".PadLeft(nestingLevel * 4);
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if (obj == null)
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{
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_dumpBuilder.AppendFormat("null", nestingSpaces);
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}
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else if (obj is string || obj.GetType().IsPrimitive)
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{
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_dumpBuilder.AppendFormat("{1}", nestingSpaces, obj.ToString().PadRight(8));
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}
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else if (ImplementsDictionary(obj.GetType()))
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{
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using var e = ((dynamic)obj).GetEnumerator();
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var enumerator = (IEnumerator)e;
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while (enumerator.MoveNext())
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{
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dynamic p = enumerator.Current;
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var key = p.Key;
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var value = p.Value;
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_dumpBuilder.AppendFormat("\n{0}{1}", nestingSpaces, key.PadRight(10), value != null ? value.GetType().ToString() : "<null>");
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DumpObject(value, nestingLevel + 1);
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}
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}
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else if (obj is IEnumerable)
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{
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foreach (dynamic p in obj as IEnumerable)
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{
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DumpObject(p, nestingLevel);
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DumpObject("\n", nestingLevel);
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DumpObject("---", nestingLevel);
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}
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}
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else
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{
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foreach (PropertyDescriptor descriptor in TypeDescriptor.GetProperties(obj))
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{
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string name = descriptor.Name;
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object value = descriptor.GetValue(obj);
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_dumpBuilder.AppendFormat("{0}{1}\n", nestingSpaces, name.PadRight(10), value != null ? value.GetType().ToString() : "<null>");
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DumpObject(value, nestingLevel + 1);
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}
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}
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}
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private bool ImplementsDictionary(Type t) => t.GetInterfaces().Any(i => i.Name.Contains("IDictionary"));
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}
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}

‎Program.cs

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namespace JsonLD.Demo
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{
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internal class Program
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{
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private static void Main()
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{
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Sample0_Installation.Run();
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Sample1_Compact.Run();
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Sample2_Expand.Run();
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Sample3_Flatten.Run();
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Sample4_Frame.Run();
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Sample5_Normalize.Run();
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Sample6_ToRDF.Run();
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Sample7_FromRDF.Run();
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Sample8_CustomRDFRender.Run();
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Sample9_CustomRDFParser.Run();
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SampleA_RemoteDocumentLoader.Run();
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}
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}
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}

‎README.md

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This repository contains the demonstration code used to generate the README.md file samples for https://github.com/linked-data-dotnet/json-ld.net

‎Resources/Resources.cs

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using System.Reflection;
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using System.IO;
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namespace JsonLD.Demo.Resources
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{
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internal static class Resources
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{
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private static readonly Assembly _thisAssembly = typeof(Resources).GetTypeInfo().Assembly;
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public static string ReadString(string name)
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{
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var resourceName = $"{nameof(JsonLD)}.{nameof(Demo)}.{nameof(Resources)}.{name}";
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using var resourceStream = _thisAssembly.GetManifestResourceStream(resourceName);
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using var streamReader = new StreamReader(resourceStream);
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return streamReader.ReadToEnd();
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}
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}
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}

‎Resources/context.json

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{
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"name": "http://schema.org/name",
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"member": "http://schema.org/member",
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"homepage": {
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"@id": "http://schema.org/url",
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"@type": "@id"
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},
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"image": {
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"@id": "http://schema.org/image",
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"@type": "@id"
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},
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"Person": "http://schema.org/Person",
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"@vocab": "http://example.org/",
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"@base": "http://example.org/"
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}

‎Resources/doc.json

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{
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"@id": "http://example.org/ld-experts",
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"http://schema.org/name": "LD Experts",
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"http://schema.org/member": [
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{
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"@type": "http://schema.org/Person",
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"http://schema.org/name": "Manu Sporny",
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"http://schema.org/url": {
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"@id": "http://manu.sporny.org/"
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},
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"http://schema.org/image": {
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"@id": "http://manu.sporny.org/images/manu.png"
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}
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}
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]
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}

‎Resources/frame.json

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{
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"@context": {
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"name": "http://schema.org/name",
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"member": {
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"@id": "http://schema.org/member",
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"@type": "@id"
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},
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"homepage": {
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"@id": "http://schema.org/url",
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"@type": "@id"
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},
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"image": {
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"@id": "http://schema.org/image",
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"@type": "@id"
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},
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"Person": "http://schema.org/Person"
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},
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"@type": "Person"
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}

‎Sample0_Installation.cs

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using JsonLD.Core;
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using Newtonsoft.Json.Linq;
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using System;
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namespace JsonLD.Demo
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{
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public static class Sample0_Installation
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{
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public static void Run()
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{
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var json = "{'@context':{'test':'http://www.example.org/'},'test:hello':'world'}";
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var document = JObject.Parse(json);
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var expanded = JsonLdProcessor.Expand(document);
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Console.WriteLine(expanded);
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}
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}
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}

‎Sample1_Compact.cs

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using Res = JsonLD.Demo.Resources.Resources;
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using System;
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using JsonLD.Core;
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using Newtonsoft.Json.Linq;
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namespace JsonLD.Demo
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{
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public class Sample1_Compact
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{
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private static readonly string _contextJson = Res.ReadString("context.json");
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private static readonly string _docJson = Res.ReadString("doc.json");
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public static JObject Run()
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{
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var doc = JObject.Parse(_docJson);
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var context = JObject.Parse(_contextJson);
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var opts = new JsonLdOptions();
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var compacted = JsonLdProcessor.Compact(doc, context, opts);
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Console.WriteLine(compacted);
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/*
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Output:
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{
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"@id": "ld-experts",
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"member": {
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"image": "http://manu.sporny.org/images/manu.png",
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"name": "Manu Sporny",
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"homepage": "http://manu.sporny.org/",
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},
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"name": "LD Experts",
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"@context": . . .
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}
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*/
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return compacted;
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}
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}
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}

‎Sample2_Expand.cs

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using System;
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using JsonLD.Core;
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using Newtonsoft.Json.Linq;
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namespace JsonLD.Demo
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{
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public class Sample2_Expand
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{
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public static JArray Run()
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{
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var compacted = Sample1_Compact.Run();
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var expanded = JsonLdProcessor.Expand(compacted);
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Console.WriteLine(expanded);
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/*
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Output:
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[
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{
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"@id": "http://example.org/ld-experts",
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"http://schema.org/member": [
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{
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"http://schema.org/url": [
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{
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"@id": "http://manu.sporny.org/"
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}
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],
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"http://schema.org/image": [
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{
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"@id": "http://manu.sporny.org/images/manu.png"
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}
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],
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"http://schema.org/name": [
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{
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"@value": "Manu Sporny"
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}
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]
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}
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]
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}
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]
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*/
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return expanded;
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}
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}
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}

‎Sample3_Flatten.cs

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using Res = JsonLD.Demo.Resources.Resources;
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using System;
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using JsonLD.Core;
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using Newtonsoft.Json.Linq;
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namespace JsonLD.Demo
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{
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public class Sample3_Flatten
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{
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private static readonly string _contextJson = Res.ReadString("context.json");
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private static readonly string _docJson = Res.ReadString("doc.json");
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public static void Run()
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{
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var doc = JObject.Parse(_docJson);
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var context = JObject.Parse(_contextJson);
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var opts = new JsonLdOptions();
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var flattened = JsonLdProcessor.Flatten(doc, context, opts);
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Console.WriteLine(flattened);
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/*
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Output:
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{
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"@context": . . .,
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"@graph": [
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{
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"@id": "_:b0",
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"image": "http://manu.sporny.org/images/manu.png",
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"name": "Manu Sporny",
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"homepage": "http://manu.sporny.org/"
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},
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{
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"@id": "ld-experts",
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"member": {
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"@id": "_:b0"
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},
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"name": "LD Experts"
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}
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]
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}
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*/
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}
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}
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}

‎Sample4_Frame.cs

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using Res = JsonLD.Demo.Resources.Resources;
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using System;
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using JsonLD.Core;
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using Newtonsoft.Json.Linq;
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namespace JsonLD.Demo
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{
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public class Sample4_Frame
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{
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private static readonly string _docJson = Res.ReadString("doc.json");
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private static readonly string _frameJson = Res.ReadString("frame.json");
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public static void Run()
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{
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var doc = JObject.Parse(_docJson);
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var frame = JObject.Parse(_frameJson);
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var opts = new JsonLdOptions();
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var flattened = JsonLdProcessor.Frame(doc, frame, opts);
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Console.WriteLine(flattened);
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/*
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Output:
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{
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"@context": . . .,
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"@graph": [
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{
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"@id": "_:b0",
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"@type": "Person",
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"image": "http://manu.sporny.org/images/manu.png",
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"name": "Manu Sporny",
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"homepage": "http://manu.sporny.org/"
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}
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]
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}
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*/
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}
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}
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}

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