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https://issues.apache.org/jira/browse/CMIS-776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Florian Müller resolved CMIS-776.
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Resolution: Won't Fix
Assignee: Florian Müller
The problem is that the extension names are the same. That is, the resulting
JOSN object would have to have to the same key more than once. Although that
would be valid JSON, not many JSON parsers would be able to handle that. Most
parsers map the JOSN object to a map/dictionary/associative array that require
a unique key.
Changing the OpenCMIS server JSON handling would be a huge effort because the
JSON parser and writer have to be adapted and all JSON related code have to be
changed -- just to support a format that most client cannot handle.
> ObjectType#getExtensions() can't handle List<CmisExtensionElement> when using
> browser binding
> ---------------------------------------------------------------------------------------------
>
> Key: CMIS-776
> URL: https://issues.apache.org/jira/browse/CMIS-776
> Project: Chemistry
> Issue Type: Bug
> Components: opencmis-server
> Affects Versions: OpenCMIS 0.10.0
> Reporter: Sergey Shcherbovich
> Assignee: Florian Müller
>
> We need to transfer List<CmisExtensionElement> with several
> CmisExtensionElement elements.
> Xxml-based bindigs (e.g. AtomPub) handles List<CmisExtensionElement> like:
> {noformat}
> <e1:mandatoryAspects xmlns:e1="myNamespace">
> <e1:mandatoryAspect>P:sys:localized</e1:mandatoryAspect>
> <e1:mandatoryAspect>P:cm:generalclassifiable</e1:mandatoryAspect>
> <e1:mandatoryAspect>P:cm:author</e1:mandatoryAspect>
> </e1:mandatoryAspects>
> {noformat}
> it can handle and transfer multiple entries with same
> CmisExtensionElement.getName().
> But present JSON-based bindig implementation can't transfer multiple entries
> with same key (JSONObject uses CmisExtensionElement.getName as a key):
> {noformat}
> "mandatoryAspects": {
> "mandatoryAspect":"P:cm:author"
> }
> {noformat}
> Assuming issue is around here:
> {code:title=org.apache.chemistry.opencmis.commons.impl.JSONConverter.convertExtensionList}
> for (CmisExtensionElement ext : extensionList) {
> if (ext == null) {
> continue;
> }
> if (ext.getChildren() != null && !ext.getChildren().isEmpty()) {
> result.put(ext.getName(),
> convertExtensionList(ext.getChildren()));
> } else {
> result.put(ext.getName(), ext.getValue()); // line 2647
> }
> }
> {code}
> Out software uses both bindings to service repository. But we can't transfer
> List<CmisExtensionElement> objects correctly. We use 0.10.0 library.
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