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PORefactor of ShouldSerialize () in class... can I use IContractResolver?
 

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  1. PORefactor of ShouldSerialize () in class... can I use IContractResolver?
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    <p>I have an API that returns a big list of car features.... all are either bool or ints... and basically I only want to display the ones that return true values or >0 for the ints.</p> <p>I am using JSON.net so that I san use the ShouldSerialize() property to determine if I should serialize the property based upon its value and my code looks like this:</p> <pre><code>public class Features { public bool ABS { get; set; } public bool ShouldSerializeABS() { // don't serialize the ABS property if ABS is false return (ABS != false); } public bool Immobiliser { get; set; } public bool ShouldSerializeImmobiliser () { // don't serialize the Immobiliser property if Immobiliser is false return (Immobiliser != false); } public int BHP { get; set; } public bool ShouldSerializeBHP () { // don't serialize the BHP property if BHP is false return (BHP != 0); } //..... etc } </code></pre> <p>This works great and gives me the results I am after, however I was just wondering if there is a way to re-factor this so that my class does not become cluttered with all the ShouldSerialize() properties?</p> <p>I have been looking into <code>CopyConditional</code> properties with <code>IContractResolver</code> on <a href="http://james.newtonking.com/projects/json/help/index.html?topic=html/ConditionalProperties.htm" rel="nofollow">http://james.newtonking.com/projects/json/help/index.html?topic=html/ConditionalProperties.htm</a> and looks like it might be possible to use <code>IContractResolver</code> for such a purpose, but I still seem to end up with lots of code that does not seem to re-factor out</p> <pre><code>public class ShouldSerializeContractResolver : DefaultContractResolver { public new static readonly ShouldSerializeContractResolver Instance = new ShouldSerializeContractResolver(); protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization) { JsonProperty property = base.CreateProperty(member, memberSerialization); if (property.DeclaringType == typeof(Features) &amp;&amp; property.PropertyName == "ABS") { property.ShouldSerialize = instance =&gt; { Features e = (Features)instance; return e.ABS != false; }; } if (property.DeclaringType == typeof(Features) &amp;&amp; property.PropertyName == "Immobiliser") { property.ShouldSerialize = instance =&gt; { Features e = (Features)instance; return e.Immobiliser != false; }; } return property; } } </code></pre> <p>and this method using the ShouldSerializeContractResolver does not seem to remove the property from the class if it is false... any help is greatly appreciated</p>
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