From https://json-schema.org/understanding-json-schema/reference/type.html

&gt; The `type` keyword may either be a string or an array:
&gt; * If it’s a string, it is the name of one of the basic types above.
&gt; * If it is an array, it must be an **array of strings**, where each string is the name of one of the basic types, and each element is unique. In this case, the JSON snippet is valid if it matches _any_ of the given types

The same page lists also the defined data type names, including `string` and `null`.

Try:

    &quot;member_region&quot;: { &quot;type&quot;: [&quot;string&quot;, &quot;null&quot;] }


Extending on Explosion Pills answer if you go for the array syntax:

    &quot;member_region&quot;: { &quot;type&quot;: [ &quot;string&quot;, &quot;null&quot; ] } // this works

because you are stating a type, not an example/value. You shouldn&#39;t go for: 

     &quot;member_region&quot;: { &quot;type&quot;: [ &quot;string&quot;, null ] } // this throws an exception

 [&quot;string&quot;, &quot;null&quot;] will work if you&#39;re not using a RegEx pattern.

I&#39;m using a date field validator: 

        (0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)\\d\\d 

to allow a MM/dd/yyyy pattern, but it will throw a non-match error at an empty string (&quot;&quot;)

It&#39;s easy enough to get the ISO 8601 date string (for example, `2004-02-12T15:19:21+00:00`) in PHP via `date(&#39;c&#39;)`, but how does one get it in Objective-C (iPhone)? Is there a similarly short way to do it?

Here&#39;s the *long* way I found to do it:

    NSDateFormatter* dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
    dateFormatter.dateFormat = @&quot;yyyy-MM-dd&#39;T&#39;HH:mm:ssZ&quot;;

    NSDate *now = [NSDate date];
    NSString *formattedDateString = [dateFormatter stringFromDate:now];
    NSLog(@&quot;ISO-8601 date: %@&quot;, formattedDateString);

    // Output: ISO-8601 date: 2013-04-27T13:27:50-0700

It seems an awful lot of rigmarole for something so central.



How do I get an ISO 8601 date on iOS?

I am trying to remove the menu and status bars from TinyMCE 4 because I want to setup a very basic editor. Is this possible?

The documentation for TinyMCE 3 does not seem to be relevant and I cannot find anything for version 4.

Remove menu and status bars in TinyMCE 4

Hopefully this isn&#39;t obvious to others because I find the docs at https://json-schema.org/ to be lacking in finer details. I&#39;m getting a block of JSON with some properties that can be `null` or a `string`. How do you specify, in a JSON Schema (to be parsed by Json.NET&#39;s `JsonSchema.Parse` method), that a value can be of type `null` or type `string`?

Is there something simple I&#39;m missing like supplying an array for the type? For example;

    &quot;member_region&quot;: { &quot;type&quot;: [ &quot;string&quot;, null ] } // this throws an exception

Also, does anyone have a better source for JSON Schema details than json-schema.org? Where can I find a larger selection of examples? I don&#39;t want to read a big document/specification to find something that can easily be demonstrated in a 10 line example.

Specify a value can be a string or null with JSON Schema

Hopefully this isn't obvious to others because I find the docs at <a href="https://json-schema.org/" target="_blank" rel="noopener noreferrer">https://json-schema.org/</a> to be lacking in finer details. I'm getting a block of JSON with some properties that can be <code>null</code> or a <code>string</code>. How do you specify, in a JSON Schema (to be parsed by Json.NET's <code>JsonSchema.Parse</code> method), that a value can be of type <code>null</code> or type <code>string</code>?
Is there something simple I'm missing like supplying an array for the type? For example;
<pre><code class="hljs language-json">"member_region": { "type": [ "string", null ] } // this throws an exception
</code></pre>
Also, does anyone have a better source for JSON Schema details than json-schema.org? Where can I find a larger selection of examples? I don't want to read a big document/specification to find something that can easily be demonstrated in a 10 line example.

I am using Backbone.js and the Tornado web server.  The standard behavior for receiving collection data in Backbone is to send as a JSON Array.

On the other hand, Tornado&#39;s standard behavior is to not allow JSON Array&#39;s due to the following vulnerability:

http://haacked.com/archive/2008/11/20/anatomy-of-a-subtle-json-vulnerability.aspx

A related one is:
http://haacked.com/archive/2009/06/25/json-hijacking.aspx

It feels more natural for me to not have to wrap up my JSON in an object when it really is a list of objects.

I was unable to reproduce these attacks in modern browsers (i.e. current Chrome, Firefox, Safari, and IE9).  At the same time I was unable to confirm anywhere that modern browsers had addressed these issues.

To ensure that I am mislead neither by any possible poor programming-skills nor poor googling-skills:

**Are these JSON Hijacking attacks still an issue today in modern browsers?**

(Note:  Sorry for the possible duplicate to: https://stackoverflow.com/questions/8587567/is-it-possible-to-do-json-hijacking-on-modern-browser  but since the accepted answer does not seem to answer the question - I thought it was time to ask it again and get some clearer explanations.)

Is JSON Hijacking still an issue in modern browsers?

In my web app I&#39;m using Newtonsoft.Json and I have following object

    [Newtonsoft.Json.JsonObject(Title = &quot;MyCar&quot;)]
    public class Car
    {
        [Newtonsoft.Json.JsonProperty(PropertyName = &quot;name&quot;)]
        public string Name{get;set;}

        [Newtonsoft.Json.JsonProperty(PropertyName = &quot;owner&quot;)]
        public string Owner{get;set;}
    }

and I want serialize them with root name (class name). This is desired format using 

    {&#39;MyCar&#39;:
     {
       &#39;name&#39;: &#39;Ford&#39;,
       &#39;owner&#39;: &#39;John Smith&#39;
     }
    }


I know that I can do that with anonymous object, but is any property or another way in Newtonsoft.Json library?

Json.NET serialize object with root name

I just realized that `json.dumps()` adds spaces in the JSON object

e.g.

    {&#39;duration&#39;: &#39;02:55&#39;, &#39;name&#39;: &#39;flower&#39;, &#39;chg&#39;: 0}

how can remove the spaces in order to make the JSON more compact and save bytes to be sent via HTTP?

such as:

    {&#39;duration&#39;:&#39;02:55&#39;,&#39;name&#39;:&#39;flower&#39;,&#39;chg&#39;:0}

Python - json without whitespaces

I&#39;m trying to generate a simple JSON response working. Right now I get 406 Not Acceptable error. Tomcat says &quot;The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request &quot;accept&quot; headers.&quot; even though my `Accept` headers are

    Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

In tomcat/lib I have all Tomcat jars, Spring jars and jackson-all-1.9.0.jar. I&#39;m using Spring 3.2.2 with Tomcat 7. 

I&#39;m aware that this issue has been discussed many times, but none of solutions is working for me.

**web.xml**

    &lt;web-app id=&quot;WebApp_ID&quot; version=&quot;2.4&quot; 
    	xmlns=&quot;http://java.sun.com/xml/ns/j2ee&quot; 
    	xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot; 
    	xsi:schemaLocation=&quot;http://java.sun.com/xml/ns/j2ee 
    	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd&quot;&gt;
     
      &lt;display-name&gt;Spring Web MVC Application&lt;/display-name&gt;
     
      &lt;servlet&gt;
      	&lt;servlet-name&gt;dispatcher&lt;/servlet-name&gt;
            &lt;servlet-class&gt;
                      org.springframework.web.servlet.DispatcherServlet
            &lt;/servlet-class&gt;
            &lt;load-on-startup&gt;1&lt;/load-on-startup&gt;
      &lt;/servlet&gt;
     
      &lt;servlet-mapping&gt;
     	&lt;servlet-name&gt;dispatcher&lt;/servlet-name&gt;
            &lt;url-pattern&gt;*.htm&lt;/url-pattern&gt;
      &lt;/servlet-mapping&gt;
     
    &lt;/web-app&gt;

**dispatcher-servlet.xml**

    &lt;beans xmlns=&quot;http://www.springframework.org/schema/beans&quot;
    	xmlns:context=&quot;http://www.springframework.org/schema/context&quot;
    	xmlns:mvc=&quot;http://www.springframework.org/schema/mvc&quot; 
    	xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
    	xsi:schemaLocation=&quot;http://www.springframework.org/schema/beans 
    	http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    	 http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.0.xsd
            http://www.springframework.org/schema/mvc
            http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd&quot;&gt;
     
        &lt;bean id=&quot;viewResolver&quot;
        	class=&quot;org.springframework.web.servlet.view.InternalResourceViewResolver&quot; &gt;
            &lt;property name=&quot;prefix&quot;&gt;
                &lt;value&gt;/WEB-INF/pages/&lt;/value&gt;
            &lt;/property&gt;
            &lt;property name=&quot;suffix&quot;&gt;
                &lt;value&gt;.jsp&lt;/value&gt;
            &lt;/property&gt;
        &lt;/bean&gt;
     &lt;context:component-scan base-package=&quot;com.smiechmateusz.controller&quot; /&gt;
     &lt;context:annotation-config /&gt;
     
    	&lt;mvc:annotation-driven /&gt;
     
    &lt;/beans&gt;

**HelloWorldController.java**

    package com.smiechmateusz.controller;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.ResponseBody;
    import org.springframework.web.servlet.ModelAndView;
    import org.springframework.web.servlet.mvc.AbstractController;
    
    import com.smiechmateusz.dao.Foo;
    
    @Controller
    @RequestMapping(&quot;/&quot;)
    public class HelloWorldController extends AbstractController{
     
    	@Override
    	protected ModelAndView handleRequestInternal(HttpServletRequest request,
    		HttpServletResponse response) throws Exception {
     
    		ModelAndView model = new ModelAndView(&quot;HelloWorldPage&quot;);
    		return model;
    	}
    	
    	@RequestMapping(value=&quot;foobar.htm&quot;, method = RequestMethod.GET)
    	public @ResponseBody Foo getShopInJSON() {
     		Foo f = new Foo();
    		f.setX(1);
    		f.setY(2);
    		f.setDescription(&quot;desc&quot;);
    		return f;
     	}
    }



**Foo.java**

    package com.smiechmateusz.dao;
    
    import java.io.Serializable;
    
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.Id;
    import javax.persistence.Table;
    
    @Entity
    @Table(name=&quot;foobaz&quot;)
    public class Foo implements Serializable
    {
    	private int x, y;
    	String description;
    	int id;
    	
    	@Column(name = &quot;x&quot;)
    	public int getX() {
    		return x;
    	}
    	public void setX(int x) {
    		this.x = x;
    	}
    	@Column(name = &quot;y&quot;)
    	public int getY() {
    		return y;
    	}
    	public void setY(int y) {
    		this.y = y;
    	}
    	@Column(name = &quot;description&quot;)
    	public String getDescription() {
    		return description;
    	}
    	public void setDescription(String description) {
    		this.description = description;
    	}
    	
    	@Id @GeneratedValue
    	@Column(name = &quot;id&quot;)
    	public int getId() {
    		return id;
    	}
    	public void setId(int id) {
    		this.id = id;
    	}
    }

I&#39;ve already tried adding 

    &lt;bean id=&quot;jsonConverter&quot; class=&quot;org.springframework.http.converter.json.MappingJacksonHttpMessageConverter&quot;&gt;&lt;/bean&gt;
    &lt;bean class=&quot;org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter&quot;&gt;
            &lt;property name=&quot;messageConverters&quot;&gt;
              &lt;list&gt;
                &lt;ref bean=&quot;jsonConverter&quot;/&gt;
              &lt;/list&gt;
        &lt;/property&gt;
    &lt;/bean&gt;

to my **dispatcher-servlet.xml** or changing _jakcson-all_ to _jackson-asl_ and _jackson-core-asl_ but output was the same.

Spring MVC + JSON = 406 Not Acceptable

I have the following ListView

    import json
    class CountryListView(ListView):
         model = Country

        def render_to_response(self, context, **response_kwargs):
            
             return json.dumps(self.get_queryset().values_list(&#39;code&#39;, flat=True))

But I get following error:

    [u&#39;ae&#39;, u&#39;ag&#39;, u&#39;ai&#39;, u&#39;al&#39;, u&#39;am&#39;, 
    u&#39;ao&#39;, u&#39;ar&#39;, u&#39;at&#39;, u&#39;au&#39;, u&#39;aw&#39;, 
    u&#39;az&#39;, u&#39;ba&#39;, u&#39;bb&#39;, u&#39;bd&#39;, u&#39;be&#39;, u&#39;bg&#39;, 
    u&#39;bh&#39;, u&#39;bl&#39;, u&#39;bm&#39;, u&#39;bn&#39;, &#39;...(remaining elements truncated)...&#39;] 
    is not JSON serializable

Any ideas ?

is not JSON serializable

I need to write the following data into a text file using JSON format in C#. The brackets are important for it to be valid JSON format.

    [
      {
        &quot;Id&quot;: 1,
        &quot;SSN&quot;: 123,
        &quot;Message&quot;: &quot;whatever&quot;
       
      },
      {
       &quot;Id&quot;: 2,
        &quot;SSN&quot;: 125,
        &quot;Message&quot;: &quot;whatever&quot;
      }
    ]

Here is my model class:

    public class data
    {
        public int Id { get; set; }
        public int SSN { get; set; }
        public string Message { get; set;}
    }


How to write a JSON file in C#?

My JSON is as follows:

    {&quot;t&quot;:&quot;1339886&quot;,&quot;a&quot;:true,&quot;data&quot;:[],&quot;Type&quot;:[[&#39;Ants&#39;,&#39;Biz&#39;,&#39;Tro&#39;]]}

I found the Newtonsoft JSON.NET deserialize library for C#. I tried to use it as follow:

    object JsonDe = JsonConvert.DeserializeObject(Json); 

How can I access to the `JsonDe` object to get all the &quot;Type&quot; Data? I tried it with a loop but it is not working because the object does not have an enumerator.

Newtonsoft JSON Deserialize

I am using Entity Framework and having a problem with getting parent and child data to the browser. Here are my classes:

     public class Question
     {
        public int QuestionId { get; set; }
        public string Title { get; set; }
        public virtual ICollection&lt;Answer&gt; Answers { get; set; }
    }

    public class Answer
    {
        public int AnswerId { get; set; }
        public string Text { get; set; }
        public int QuestionId { get; set; }
        public virtual Question Question { get; set; }
    }

I am using the following code to return the question and answer data:

        public IList&lt;Question&gt; GetQuestions(int subTopicId, int questionStatusId)
        {
            var questions = _questionsRepository.GetAll()
                .Where(a =&gt; a.SubTopicId == subTopicId &amp;&amp;
                       (questionStatusId == 99 ||
                        a.QuestionStatusId == questionStatusId))
                .Include(a =&gt; a.Answers)
                .ToList();
            return questions; 
        }

On the C# side this seems to work however I notice that the answer objects have references back to the question. When I use the WebAPI to get the data to the browser I get the following message:

&gt;The &#39;ObjectContent`1&#39; type failed to serialize the response body for content type &#39;application/json; charset=utf-8&#39;.
&gt;
&gt;Self referencing loop detected for property &#39;question&#39; with type &#39;Models.Core.Question&#39;.

Is this because the Question has Answers and the Answers have a reference back to Question? All the places I have looked suggest having a reference to the parent in the child so I am not sure what to do. Can someone give me some advice on this.

Self referencing loop detected - Getting back data from WebApi to the browser

I am attempt to use an API that use the follow example structure for their returned json

    [
       {
          &quot;customer&quot;:{
             &quot;first_name&quot;:&quot;Test&quot;,
             &quot;last_name&quot;:&quot;Account&quot;,
             &quot;email&quot;:&quot;test1@example.com&quot;,
             &quot;organization&quot;:&quot;&quot;,
             &quot;reference&quot;:null,
             &quot;id&quot;:3545134,
             &quot;created_at&quot;:&quot;2013-08-06T15:51:15-04:00&quot;,
             &quot;updated_at&quot;:&quot;2013-08-06T15:51:15-04:00&quot;,
             &quot;address&quot;:&quot;&quot;,
             &quot;address_2&quot;:&quot;&quot;,
             &quot;city&quot;:&quot;&quot;,
             &quot;state&quot;:&quot;&quot;,
             &quot;zip&quot;:&quot;&quot;,
             &quot;country&quot;:&quot;&quot;,
             &quot;phone&quot;:&quot;&quot;
          }
       },
       {
          &quot;customer&quot;:{
             &quot;first_name&quot;:&quot;Test&quot;,
             &quot;last_name&quot;:&quot;Account2&quot;,
             &quot;email&quot;:&quot;test2@example.com&quot;,
             &quot;organization&quot;:&quot;&quot;,
             &quot;reference&quot;:null,
             &quot;id&quot;:3570462,
             &quot;created_at&quot;:&quot;2013-08-12T11:54:58-04:00&quot;,
             &quot;updated_at&quot;:&quot;2013-08-12T11:54:58-04:00&quot;,
             &quot;address&quot;:&quot;&quot;,
             &quot;address_2&quot;:&quot;&quot;,
             &quot;city&quot;:&quot;&quot;,
             &quot;state&quot;:&quot;&quot;,
             &quot;zip&quot;:&quot;&quot;,
             &quot;country&quot;:&quot;&quot;,
             &quot;phone&quot;:&quot;&quot;
          }
       }
    ]

JSON.net would work great with something like the following structure  

	{
		&quot;customer&quot;: {
			[&quot;field1&quot; : &quot;value&quot;, etc...],
			[&quot;field1&quot; : &quot;value&quot;, etc...],
		}
	}

But I can not figure out how to get it to be happy with the provided structure. 

Using the default JsonConvert.DeserializeObject&lt;Customer&gt;(content) results the correct number of Customer but all of the data is null.

Doing something a CustomerList (below) results in a &quot;Cannot deserialize the current JSON array&quot; exception

    public class CustomerList
    {
        public List&lt;Customer&gt; customer { get; set; }
    }

Thoughts?

Deserializing JSON Object Array with Json.net

I want to make a schema of json file.It&#39;s for an array of products.

The json schema is similar as below:

    {
    &quot;$schema&quot;: &quot;http://json-schema.org/draft-04/schema#&quot;,
    &quot;title&quot;: &quot;Product set&quot;,
    &quot;type&quot;: &quot;array&quot;,
    &quot;items&quot;: {
        &quot;title&quot;: &quot;Product&quot;,
        &quot;type&quot;: &quot;object&quot;,
        &quot;properties&quot;: {
            &quot;id&quot;: {
                &quot;description&quot;: &quot;The unique identifier for a product&quot;,
                &quot;type&quot;: &quot;number&quot;
            },
            &quot;name&quot;: {
                &quot;type&quot;: &quot;string&quot;
            },
            &quot;price&quot;: {
                &quot;type&quot;: &quot;number&quot;,
                &quot;minimum&quot;: 0,
                &quot;exclusiveMinimum&quot;: true
            },
            &quot;tags&quot;: {
                &quot;type&quot;: &quot;array&quot;,
                &quot;items&quot;: {
                    &quot;type&quot;: &quot;string&quot;
                },
                &quot;minItems&quot;: 1,
                &quot;uniqueItems&quot;: true
            },
            &quot;dimensions&quot;: {
                &quot;type&quot;: &quot;object&quot;,
                &quot;properties&quot;: {
                    &quot;length&quot;: {&quot;type&quot;: &quot;number&quot;},
                    &quot;width&quot;: {&quot;type&quot;: &quot;number&quot;},
                    &quot;height&quot;: {&quot;type&quot;: &quot;number&quot;}
                },
                &quot;required&quot;: [&quot;length&quot;, &quot;width&quot;, &quot;height&quot;]
            },
            &quot;warehouseLocation&quot;: {
                &quot;description&quot;: &quot;Coordinates of the warehouse with the product&quot;,
                &quot;$ref&quot;: &quot;http://json-schema.org/geo&quot;
            }
        },
        &quot;required&quot;: [&quot;id&quot;, &quot;name&quot;, &quot;price&quot;]
    }
    }

The array should at least one item in it. How can I define the minimum of the array?

Do I need to add the minimun defination?


How to define the min size of array in the json schema

I am using json-schema and wanting to only allow properties that are declared in this file to pass validation. For instance if a user passes a &quot;name&quot; property in their json object it will fail this schema because &quot;name&quot; is not listed here as a property.

Is there some function similar to &quot;required&quot; that will only allow the listed properties to pass?

    {
    &quot;$schema&quot;: &quot;http://json-schema.org/draft-04/schema#&quot;,
    &quot;title&quot;: &quot;Accounting Resource - Add Item&quot;,
    &quot;type&quot;: &quot;object&quot;,
    &quot;properties&quot;: {
        &quot;itemNumber&quot;: {
            &quot;type&quot;:&quot;string&quot;,
            &quot;minimum&quot;: 3
        },
        &quot;title&quot;: {
            &quot;type&quot;:&quot;string&quot;,
            &quot;minimum&quot;: 5
        },
        &quot;description&quot;: {
            &quot;type&quot;:&quot;string&quot;,
            &quot;minimum&quot;: 5
        }
    },
    &quot;required&quot;: [
        &quot;itemNumber&quot;,
        &quot;title&quot;,
        &quot;description&quot;
    ]
    }

Only allow properties that are declared in JSON schema

Suppose we have schema following schema (from tutorial [here][1]): 

    {
      &quot;$schema&quot;: &quot;http://json-schema.org/draft-04/schema#&quot;,
    
      &quot;definitions&quot;: {
        &quot;address&quot;: {
          &quot;type&quot;: &quot;object&quot;,
          &quot;properties&quot;: {
            &quot;street_address&quot;: { &quot;type&quot;: &quot;string&quot; },
            &quot;city&quot;:           { &quot;type&quot;: &quot;string&quot; },
            &quot;state&quot;:          { &quot;type&quot;: &quot;string&quot; }
          },
          &quot;required&quot;: [&quot;street_address&quot;, &quot;city&quot;, &quot;state&quot;]
        }
      },
    
      &quot;type&quot;: &quot;object&quot;,
    
      &quot;properties&quot;: {
        &quot;billing_address&quot;: { &quot;$ref&quot;: &quot;#/definitions/address&quot; },
        &quot;shipping_address&quot;: {
          &quot;allOf&quot;: [
            { &quot;$ref&quot;: &quot;#/definitions/address&quot; },
            { &quot;properties&quot;:
              { &quot;type&quot;: { &quot;enum&quot;: [ &quot;residential&quot;, &quot;business&quot; ] } },
              &quot;required&quot;: [&quot;type&quot;]
            }
          ]
        } 
        
      }
    }

And here is valid instance: 


    {
          &quot;shipping_address&quot;: {
            &quot;street_address&quot;: &quot;1600 Pennsylvania Avenue NW&quot;,
            &quot;city&quot;: &quot;Washington&quot;,
            &quot;state&quot;: &quot;DC&quot;,
            &quot;type&quot;: &quot;business&quot;
          }
    }


I need to ensure that any additional fields for `shipping_address` will be invalid. I know for this purpose exists `additionalProperties` which should be set to &quot;false&quot;. But when I&#39;m setting `&quot;additionalProprties&quot;:false` as in the following: 

    &quot;shipping_address&quot;: {
              &quot;allOf&quot;: [
                { &quot;$ref&quot;: &quot;#/definitions/address&quot; },
                { &quot;properties&quot;:
                  { &quot;type&quot;: { &quot;enum&quot;: [ &quot;residential&quot;, &quot;business&quot; ] } },
                  &quot;required&quot;: [&quot;type&quot;]
                }
              ],
              &quot;additionalProperties&quot;:false
            } 

I get a validation error (checked [here][2]):

    [ {
      &quot;level&quot; : &quot;error&quot;,
      &quot;schema&quot; : {
        &quot;loadingURI&quot; : &quot;#&quot;,
        &quot;pointer&quot; : &quot;/properties/shipping_address&quot;
      },
      &quot;instance&quot; : {
        &quot;pointer&quot; : &quot;/shipping_address&quot;
      },
      &quot;domain&quot; : &quot;validation&quot;,
      &quot;keyword&quot; : &quot;additionalProperties&quot;,
      &quot;message&quot; : &quot;additional properties are not allowed&quot;,
      &quot;unwanted&quot; : [ &quot;city&quot;, &quot;state&quot;, &quot;street_address&quot;, &quot;type&quot; ]
    } ] 

The question is: how should I to limit fields for the `shipping_address` part only?  Thanks in advance.

  [1]: http://spacetelescope.github.io/understanding-json-schema/structuring.html#structuring
  [2]: http://json-schema-validator.herokuapp.com/index.jsp

JSON schema : &quot;allof&quot; with &quot;additionalProperties&quot;

I am having trouble coming up with a JSON schema that will validate if the JSON contains either:

- one field only
- another field only
- (one of two other fields) only

but not to match when multiples of those are present.

In my case specifically, I want one of 

- `copyAll`
- `fileNames`
- `matchesFiles` and/or `doesntMatchFiles`

to validate but I don&#39;t want to accept when more than that is there.


Here&#39;s what I&#39;ve got so far:

    {
        &quot;$schema&quot;: &quot;http://json-schema.org/draft-04/schema#&quot;,
        &quot;type&quot;: &quot;object&quot;,
        &quot;required&quot;: [ &quot;unrelatedA&quot; ],
        &quot;properties&quot;: {
    	&quot;unrelatedA&quot;: {
    	    &quot;type&quot;: &quot;string&quot;
    	},
    	&quot;fileNames&quot;: {
    	    &quot;type&quot;: &quot;array&quot;
    	},
    	&quot;copyAll&quot;: {
    	    &quot;type&quot;: &quot;boolean&quot;
    	},
    	&quot;matchesFiles&quot;: {
    	    &quot;type&quot;: &quot;array&quot;
    	},
    	&quot;doesntMatchFiles&quot;: {
    	    &quot;type&quot;: &quot;array&quot;
            }
        },
        &quot;oneOf&quot;: [
             {&quot;required&quot;: [&quot;copyAll&quot;], &quot;not&quot;:{&quot;required&quot;:[&quot;matchesFiles&quot;]}, &quot;not&quot;:{&quot;required&quot;:[&quot;doesntMatchFiles&quot;]}, &quot;not&quot;:{&quot;required&quot;:[&quot;fileNames&quot;]}},
             {&quot;required&quot;: [&quot;fileNames&quot;], &quot;not&quot;:{&quot;required&quot;:[&quot;matchesFiles&quot;]}, &quot;not&quot;:{&quot;required&quot;:[&quot;doesntMatchFiles&quot;]}, &quot;not&quot;:{&quot;required&quot;:[&quot;copyAll&quot;]}},
             {&quot;anyOf&quot;: [
                   {&quot;required&quot;: [&quot;matchesFiles&quot;], &quot;not&quot;:{&quot;required&quot;:[&quot;copyAll&quot;]}, &quot;not&quot;:{&quot;required&quot;:[&quot;fileNames&quot;]}},
                   {&quot;required&quot;: [&quot;doesntMatchFiles&quot;], &quot;not&quot;:{&quot;required&quot;:[&quot;copyAll&quot;]}, &quot;not&quot;:{&quot;required&quot;:[&quot;fileNames&quot;]}}]}
        ]
    } ;

This matches more than I want to. I want this to match all of the following:

    {&quot;copyAll&quot;: true, &quot;unrelatedA&quot;:&quot;xxx&quot;}
    {&quot;fileNames&quot;: [&quot;aab&quot;, &quot;cab&quot;], &quot;unrelatedA&quot;:&quot;xxx&quot;}
    {&quot;matchesFiles&quot;: [&quot;a*&quot;], &quot;unrelatedA&quot;:&quot;xxx&quot;}
    {&quot;doesntMatchFiles&quot;: [&quot;a*&quot;], &quot;unrelatedA&quot;:&quot;xxx&quot;}
    {&quot;matchesFiles&quot;: [&quot;a*&quot;], &quot;doesntMatchFiles&quot;: [&quot;*b&quot;], &quot;unrelatedA&quot;:&quot;xxx&quot;}

but not to match:

    {&quot;copyAll&quot;: true, &quot;matchesFiles&quot;:[&quot;a*&quot;], &quot;unrelatedA&quot;:&quot;xxx&quot;}
    {&quot;fileNames&quot;: [&quot;a&quot;], &quot;matchesFiles&quot;:[&quot;a*&quot;], &quot;unrelatedA&quot;:&quot;xxx&quot;}
    {&quot;copyAll&quot;: true, &quot;doesntMatchFiles&quot;: [&quot;*b&quot;], &quot;matchesFiles&quot;:[&quot;a*&quot;], &quot;unrelatedA&quot;:&quot;xxx&quot;}
    {&quot;fileNames&quot;: [&quot;a&quot;], &quot;matchesFiles&quot;:[&quot;a*&quot;], &quot;unrelatedA&quot;:&quot;xxx&quot;}
    {&quot;unrelatedA&quot;:&quot;xxx&quot;}


I&#39;m guessing there&#39;s something obvious I&#39;m missing - I&#39;d like to know what it is.

How do I require one field or another or (one of two others) but not all of them?

I have Swagger API Declaration for services using [Swagger v 1.2](https://github.com/wordnik/swagger-spec/blob/master/versions/1.2.md).

My original feeling about Swagger was that it is very close to JSON Schema (Draft 3 and lately Draft 4) and it shall be relatively easy to generate JSON Schema for request and response objects.

However, while part of the Swagger reuses JSON Schema structures, it turned out that it uses only a subset of features, and it also introduces its own inheritance in Models (using `subTypes` and `discriminator`).

Question: Is there any existing project or piece of code which can **generate usable JSON Schema from Swagger API Declaration**?

Optimally JSON Schema Draft 4 and using Python (but I will be happy to find anything).

Content Type	Original Author	Original Content on Stackoverflow
Question	evanmcdonnal	View Question on Stackoverflow
Solution 1 - Json	Explosion Pills	View Answer on Stackoverflow
Solution 2 - Json	zardilior	View Answer on Stackoverflow
Solution 3 - Json	TheWizardOfTN	View Answer on Stackoverflow

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