I am trying to send a conditional PUT to a Restlet resource using the 'If-None-Match: *' header, basically I need the PUT to succeed if no entity exists and to fail if it does exist (see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.26). The current behavior of Restlet appears to be the opposite.
Within ServerResource.doConditionalHandle() if the resource does not exist resultInfo ends up null so Conditions.getStatus(...) is never consulted and a 404 is returned. When the resource does exist resultInfo is non-null and Conditions.getStatus(...) is invoked. The If-None-Match rule if (Conditions line #273) then enters the entityExists if block, but since my entity tag is null 'matched' is left as false even though the existence of the entity should cause a match when '*' is specified, as stated in the spec: "the method MUST NOT be performed if the representation selected by the origin server (or by a cache, possibly using the Vary mechanism, see section 14.44) exists." Since matched is left as false the PUT is allowed to proceed, overwriting the previously existing resource. Also as a side note, within the If-None-Match rule if the entity does not exist (entityExists = false) matched is set to 'getNoneMatch().get(0).equals(Tag.ALL)', whereas it should remain false. ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2449400
