Sascha Homeier created CMIS-1074:
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Summary: getContentStream returns null for renditions if link
cache is cold
Key: CMIS-1074
URL: https://issues.apache.org/jira/browse/CMIS-1074
Project: Chemistry
Issue Type: Bug
Components: opencmis-client
Affects Versions: OpenCMIS 1.0.0
Reporter: Sascha Homeier
A direct request for a rendition stream returns null:
{code}
ContentStream contentStream = cmisSession.getContentStream(objectId,
originalId, null, null);
// contentStream is null here
{code}
Used binding: AtomPub
I am not sure if I understand the AtomPub binding with its links well enough
but for me it seems the link cache is cold and the client wants to heat it up
by getting the main document. This is done by getting the object by id with
rendition filter "cmis:none". I guess this rendition filter is the reason there
is no "alternate" link found in link cache which could be used to actually
request the content stream.
If you heat up the cache manually by getting the main document including
renditions first it works:
{code}
OperationContext opCtx = OperationContextUtils.createMinimumOperationContext();
opCtx.setRenditionFilterString("*");
ObjectId objectId = cmisSession.createObjectId(coid);
Document document = (Document) cmisSession.getObject(objectId, opCtx);
ContentStream contentStream = cmisSession.getContentStream(objectId,
originalId, null, null);
{code}
Also getting the contentStream via document object works:
{code}
OperationContext opCtx = OperationContextUtils.createMinimumOperationContext();
opCtx.setRenditionFilterString("*");
ObjectId objectId = cmisSession.createObjectId(coid);
Document document = (Document) cmisSession.getObject(objectId, opCtx);
ContentStream contentStream = document.getContentStream(originalId);
{code}
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