support optimistic locking with ETags and If-Match in rest server
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Key: ISPN-1084
URL:
https://issues.jboss.org/browse/ISPN-1084
Project: Infinispan
Issue Type: Feature Request
Components: Cache Server
Affects Versions: 5.0.0.CR1, 4.2.2.BETA1
Reporter: Michal Linhard
Assignee: Trustin Lee
currently it is not possible to do optimistic locking using the ETag feature in the REST
server, because the "If-Match" HTTP header is ignored.
We allow to put a value many times with the same "If-Match" header, but
according to the spec:
{quote}
"A request intended to update a resource (e.g., a PUT) MAY include an If-Match header
field to signal that the request method MUST NOT be applied if the entity corresponding to
the If-Match value (a single entity tag) is no longer a representation of that resource.
This allows the user to indicate that they do not wish the request to be successful if the
resource has been changed without their knowledge. "
{quote}
(copied from
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.24)
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