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3341439
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0
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2
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CreationDate
2010-07-27T07:16:51.910
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2011-09-16T18:05:07.500
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2011-09-16T18:05:07.500
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2
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45
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text
Body
I rely on <a href="http://code.google.com/p/google-gson/" rel="noreferrer">Google JSON</a> To handle this kind of issue by using The feature <blockquote> <a href="http://sites.google.com/site/gson/gson-user-guide#TOC-User-Defined-Exclusion-Strategies" rel="noreferrer">Excluding Fields From Serialization and Deserialization</a> </blockquote> Suppose a bi-directional relationship between A and B class as follows <pre><code>public class A implements Serializable { private B b; } </code></pre> And B <pre><code>public class B implements Serializable { private A a; } </code></pre> Now use GsonBuilder To get a custom Gson object as follows (Notice setExclusionStrategies method) <pre><code>Gson gson = new GsonBuilder() .setExclusionStrategies(new ExclusionStrategy() { public boolean shouldSkipClass(Class<?> clazz) { return (clazz == B.class); } /** * Custom field exclusion goes here */ public boolean shouldSkipField(FieldAttributes f) { return false; } }) /** * Use serializeNulls method if you want To serialize null values * By default, Gson does not serialize null values */ .serializeNulls() .create(); </code></pre> Now our circular reference <pre><code>A a = new A(); B b = new B(); a.setB(b); b.setA(a); String json = gson.toJson(a); System.out.println(json); </code></pre> Take a look at <a href="http://google-gson.googlecode.com/svn/tags/1.3/docs/javadocs/com/google/gson/GsonBuilder.html" rel="noreferrer">GsonBuilder</a> class 
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1. POHow to solve circular reference in json serializer caused by hibernate bidirectional mapping?
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1. USArthur Ronald
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1. USArthur Ronald
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1. COThank you Arthur for your kind suggestion but the actual question is what is the best way to build so called generic "shouldSkipClass" method. For now I worked on matt's idea and resolved my issue but still skeptic, in future this solution may break in certian scenarios.
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