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Subject: [OASIS Issue Tracker] Commented: (ODATA-539) Delta response encoding is unnecessarily verbose and change type is missing when odata.metadata=none
[ http://tools.oasis-open.org/issues/browse/ODATA-539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=35006#action_35006 ] Ralf Handl commented on ODATA-539: ---------------------------------- I don't think we need a new preference here. There are cases where URLs will be absolute, e.g. references to vocabularies on a central site (oasis-open.org, odata.org), so clients need to be able to deal with both absolute or relative URLs, and adding a preference that can be disregarded just adds complexity. Adding a requirement for servers somewhat raises the bar for them, but producer implementers are probably interested in making it easy to use their producer through a proxy, so that should be ok. Adapted proposal for ODATA-527 accordingly. > Delta response encoding is unnecessarily verbose and change type is missing when odata.metadata=none > ---------------------------------------------------------------------------------------------------- > > Key: ODATA-539 > URL: http://tools.oasis-open.org/issues/browse/ODATA-539 > Project: OASIS Open Data Protocol (OData) TC > Issue Type: Improvement > Components: OData ATOM Format , OData JSON Format, OData Protocol > Affects Versions: V4.0_CS01 > Environment: [Proposed] > Reporter: Evan Ireland > Fix For: V4.0_CSD03 > > > For a number of reasons, the encoding of delta responses is unnecessarily verbose, which will result in excessive network and CPU utilization, particularly for offline-enabled mobile devices. > (1) To distinguish between changed entity, deleted entity, changed link, or deleted link requires use of the Context URL which, as described in ODATA-538, can be unnecessarily verbose. > (2) The "id" in deleted entities and the "source"/"target" in added/deleted links is not required to use a relative URL, and clients cannot control whether the server will or will not use relative URLs. > Additionally, if odata.metadata=none, clients may be unable to decode delta responses, since odata.context may be omitted in that case. Interestingly, odata.deltaLink cannot be omitted from the response, although a delta response without change type for each of the included changes would be useless to a client. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://tools.oasis-open.org/issues/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
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