StackOverflow2013

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PO
primarykey
Id
12054049
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0
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0
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0
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CreationDate
2012-08-21T11:40:57.660
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0
LastActivityDate
2012-08-22T14:08:36.457
LastEditDate
2012-08-22T14:08:36.457
LastEditorUserId
20770
OwnerUserId
1578045
ParentId
11838501
PostTypeId
2
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0
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0
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text
Body
<p>I also encountered this problem - I did my best to document the fix on my website - See <a href="http://dalelotts.com/software-architect/grails" rel="nofollow">http://dalelotts.com/software-architect/grails</a></p> <p>In general the solution is to convert the JSON to a parameter map that can be used for data binding. More info on the site, including an annotation driven DomainClassMarshaller for JSON</p> <pre><code>protected Object readFromJson(Class type, InputStream entityStream, String charset) { def mapper = new ObjectMapper(); def parsedJSON = mapper.readValue(entityStream, typeRef); Map<String, Object> map = new HashMap<>(); parsedJSON.entrySet().each {Map.Entry<String, Object> entry -> if (List.isAssignableFrom(entry.getValue().getClass())) { List values = (List) entry.getValue(); int limit = values.size() for (int i = 0; i < limit; i++) { final theValue = values.get(i) map.put(entry.key + '[' + i + ']', theValue) appendMapValues(map, theValue, entry.key + '[' + i + ']' ) } } else { map.put(entry.key, entry.value); } } def result = type.metaClass.invokeConstructor(map) // Workaround for http://jira.codehaus.org/browse/GRAILS-1984 if (!result.id) { result.id = idFromMap(map) } result } private void appendMapValues(Map<String, Object> theMap, Object theValue, String prefix) { if (Map.isAssignableFrom(theValue.getClass())) { Map<String, Object> valueMap = (Map<String, Object>) theValue; for (Map.Entry<String, Object> valueEntry : valueMap.entrySet()) { theMap.put(prefix + '.' + valueEntry.key, valueEntry.value) appendMapValues(theMap, valueEntry.value, prefix + '.' + valueEntry.key) } } } </code></pre>
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1. POGrails - how to let a domain class convert JSON into a domain property
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  PTQuestion
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1. PTAnswer
UserLastEditorUserId
1. UScdeszaq
UserOwnerUserId
1. USdale.lotts
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