[infinispan-issues] [JBoss JIRA] Created: (ISPN-1084) support optimistic locking with ETags and If-Match in rest server

[Michal Linhard (JIRA)]

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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