/**
* Handle the request primitive retrieve ... TODO: Strategy for error handling ... TS0004 7.1.1.2
*
* @param onem2mResponse response
*/
public void handleOperationRetrieve(ResponsePrimitive onem2mResponse) {
// Use table TS0004: 7.1.1.1-1 to validate RETRIEVE specific parameters that were not handled in
// the calling routine
// if the content format is provided then it must be supported
String cf = getPrimitive(RequestPrimitive.CONTENT_FORMAT);
if (cf != null) {
if (!cf.contentEquals(Onem2m.ContentFormat.JSON)
&& !cf.contentEquals(Onem2m.ContentFormat.XML)) {
onem2mResponse.setRSC(
Onem2m.ResponseStatusCode.CONTENTS_UNACCEPTABLE,
"CONTENT_FORMAT(" + RequestPrimitive.CONTENT_FORMAT + ") not accepted (" + cf + ")");
return;
}
}
// validate result content options for retrieve
String rc = getPrimitive(RequestPrimitive.RESULT_CONTENT);
if (rc != null) {
if (!(rc.contentEquals(Onem2m.ResultContent.ATTRIBUTES)
|| rc.contentEquals(Onem2m.ResultContent.ATTRIBUTES_CHILD_RESOURCES)
|| rc.contentEquals(Onem2m.ResultContent.CHILD_RESOURCE_REFS)
|| rc.contentEquals(Onem2m.ResultContent.ATTRIBUTES_CHILD_RESOURCE_REFS))) {
onem2mResponse.setRSC(
Onem2m.ResponseStatusCode.CONTENTS_UNACCEPTABLE,
"RESULT_CONTENT(" + RequestPrimitive.RESULT_CONTENT + ") not accepted (" + rc + ")");
return;
}
}
// return hierarchical address by default if not specified
String drt = getPrimitive(RequestPrimitive.DISCOVERY_RESULT_TYPE);
if (drt == null) {
setPrimitive(RequestPrimitive.DISCOVERY_RESULT_TYPE, Onem2m.DiscoveryResultType.HIERARCHICAL);
}
// find the resource using the TO URI ...
String to = this.getPrimitive(RequestPrimitive.TO);
if (!Onem2mDb.getInstance().findResourceUsingURI(to, this, onem2mResponse)) {
// check to see if an resource/attribute was specified
if (!Onem2mDb.getInstance().findResourceUsingURIAndAttribute(to, this, onem2mResponse)) {
onem2mResponse.setRSC(
Onem2m.ResponseStatusCode.NOT_FOUND, "Resource target URI not found: " + to);
return;
}
return;
}
// process the resource specific attributes
ResourceContentProcessor.handleRetrieve(this, onem2mResponse);
if (onem2mResponse.getPrimitive(ResponsePrimitive.RESPONSE_STATUS_CODE) != null) {
return;
}
// return the data according to result content and filter criteria
ResultContentProcessor.handleRetrieve(this, onem2mResponse);
// TODO: see TS0004 6.8
// if FOUND, and all went well, send back OK
if (onem2mResponse.getPrimitive(ResponsePrimitive.RESPONSE_STATUS_CODE) == null) {
onem2mResponse.setPrimitive(
ResponsePrimitive.RESPONSE_STATUS_CODE, Onem2m.ResponseStatusCode.OK);
}
}
