Thierry Templier created OLINGO-534:
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Summary: Problem when deserializing an entity with JSON
Key: OLINGO-534
URL: https://issues.apache.org/jira/browse/OLINGO-534
Project: Olingo
Issue Type: Bug
Components: odata4-server
Affects Versions: (Java) V4 4.0.0-beta-02
Reporter: Thierry Templier
Hello,
I try to deserialize an entity sent by an OData client and I have the following
exception:
Tree should be empty but still has content left.
at
org.apache.olingo.server.core.deserializer.json.ODataJsonDeserializer.consumeEntityNode(ODataJsonDeserializer.java:262)
at
org.apache.olingo.server.core.deserializer.json.ODataJsonDeserializer.entity(ODataJsonDeserializer.java:156)
at
org.apache.olingo.data.providers.ODataProvidersProcessor.updateEntity(ODataProvidersProcessor.java:250)
at
org.apache.olingo.server.core.ODataHandler.handleEntityDispatching(ODataHandler.java:636)
at
org.apache.olingo.server.core.ODataHandler.handleEntityDispatching(ODataHandler.java:585)
at
org.apache.olingo.server.core.ODataHandler.handleResourceDispatching(ODataHandler.java:253)
at
org.apache.olingo.server.core.ODataHandler.processInternal(ODataHandler.java:194)
at
org.apache.olingo.server.core.ODataHandler.process(ODataHandler.java:111)
After having investigated a bit the problem, it appears that the metadata type
fields (for example fields like this: fie...@odata.type) aren't handled and
Jackson parsing tree isn't empty at the very end of the processing.
A quick fix consists in adding the following lines (see
field.getKey().endsWith(Constants.JSON_TYPE)):
final List<String> toRemove = new ArrayList<String>();
Iterator<Entry<String, JsonNode>> fieldsIterator = tree.fields();
// TODO: Add custom annotation support
while (fieldsIterator.hasNext()) {
Map.Entry<String, JsonNode> field = (Map.Entry<String, JsonNode>)
fieldsIterator.next();
if (field.getKey().endsWith(Constants.JSON_NAVIGATION_LINK)) {
(...)
} else if (field.getKey().endsWith(Constants.JSON_ASSOCIATION_LINK)) {
(...)
} else if (field.getKey().endsWith(Constants.JSON_TYPE)) {
toRemove.add(field.getKey());
}
After adding these two lines, things work well!
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