@Override
public UUID saveStatement(Statement statement) throws Exception {
HTTPRequest request = new HTTPRequest();
request.setRequestContent(
new ByteArrayBuffer(statement.toJSON(this.getVersion(), this.usePrettyJSON()), "UTF-8"));
String url = this.getEndpoint() + "statements";
if (statement.getId() == null) {
request.setMethod(HttpMethods.POST);
} else {
request.setMethod(HttpMethods.PUT);
url += "?statementId=" + statement.getId().toString();
}
request.setURL(url);
HTTPResponse response = this.sendRequest(request);
int status = response.getStatus();
// TODO: handle 409 conflict, etc.
if (status == 204) {
return statement.getId();
} else if (status == 200) {
String content = request.getResponseContent();
return UUID.fromString(
Mapper.getInstance().readValue(content, ArrayNode.class).get(0).textValue());
}
throw new UnexpectedHTTPResponse(response);
}
@Override
public StatementsResultLRSResponse saveStatements(List<Statement> statements) {
StatementsResultLRSResponse lrsResponse = new StatementsResultLRSResponse();
if (statements.isEmpty()) {
lrsResponse.setSuccess(true);
return lrsResponse;
}
ArrayNode rootNode = Mapper.getInstance().createArrayNode();
for (Statement statement : statements) {
rootNode.add(statement.toJSONNode(getVersion()));
}
lrsResponse.setRequest(new HTTPRequest());
lrsResponse.getRequest().setResource("statements");
lrsResponse.getRequest().setMethod(HttpMethods.POST);
lrsResponse.getRequest().setContentType("application/json");
try {
lrsResponse
.getRequest()
.setContent(Mapper.getWriter(this.usePrettyJSON()).writeValueAsBytes(rootNode));
} catch (JsonProcessingException ex) {
lrsResponse.setErrMsg("Exception: " + ex.toString());
return lrsResponse;
}
HTTPResponse response = makeSyncRequest(lrsResponse.getRequest());
int status = response.getStatus();
lrsResponse.setResponse(response);
if (status == 200) {
lrsResponse.setSuccess(true);
lrsResponse.setContent(new StatementsResult());
try {
Iterator it =
Mapper.getInstance().readValue(response.getContent(), ArrayNode.class).elements();
for (int i = 0; it.hasNext(); ++i) {
lrsResponse.getContent().getStatements().add(statements.get(i));
lrsResponse
.getContent()
.getStatements()
.get(i)
.setId(UUID.fromString(((JsonNode) it.next()).textValue()));
}
} catch (Exception ex) {
lrsResponse.setErrMsg("Exception: " + ex.toString());
lrsResponse.setSuccess(false);
}
} else {
lrsResponse.setSuccess(false);
}
return lrsResponse;
}
@Override
public StatementLRSResponse saveStatement(Statement statement) {
StatementLRSResponse lrsResponse = new StatementLRSResponse();
lrsResponse.setRequest(new HTTPRequest());
lrsResponse.getRequest().setResource("statements");
lrsResponse.getRequest().setContentType("application/json");
try {
lrsResponse
.getRequest()
.setContent(statement.toJSON(this.getVersion(), this.usePrettyJSON()).getBytes("UTF-8"));
} catch (IOException ex) {
lrsResponse.setErrMsg("Exception: " + ex.toString());
return lrsResponse;
}
if (statement.getId() == null) {
lrsResponse.getRequest().setMethod(HttpMethods.POST);
} else {
lrsResponse.getRequest().setMethod(HttpMethods.PUT);
lrsResponse.getRequest().setQueryParams(new HashMap<String, String>());
lrsResponse.getRequest().getQueryParams().put("statementId", statement.getId().toString());
}
lrsResponse.setResponse(makeSyncRequest(lrsResponse.getRequest()));
int status = lrsResponse.getResponse().getStatus();
lrsResponse.setContent(statement);
// TODO: handle 409 conflict, etc.
if (status == 200) {
lrsResponse.setSuccess(true);
String content = lrsResponse.getResponse().getContent();
try {
lrsResponse
.getContent()
.setId(
UUID.fromString(
Mapper.getInstance().readValue(content, ArrayNode.class).get(0).textValue()));
} catch (Exception ex) {
lrsResponse.setErrMsg("Exception: " + ex.toString());
lrsResponse.setSuccess(false);
}
} else if (status == 204) {
lrsResponse.setSuccess(true);
} else {
lrsResponse.setSuccess(false);
}
return lrsResponse;
}