protected void addGlobalVariables(
Execution execution,
int variableType,
Map<String, RestVariable> variableMap,
UriInfo uriInfo) {
RuntimeService runtimeService = BPMNOSGIService.getRumtimeService();
Map<String, Object> rawVariables = runtimeService.getVariables(execution.getId());
List<RestVariable> globalVariables =
new RestResponseFactory()
.createRestVariables(
rawVariables,
execution.getId(),
variableType,
RestVariable.RestVariableScope.GLOBAL,
uriInfo.getBaseUri().toString());
// Overlay global variables over local ones. In case they are present the values are not
// overridden,
// since local variables get precedence over global ones at all times.
for (RestVariable var : globalVariables) {
if (!variableMap.containsKey(var.getName())) {
variableMap.put(var.getName(), var);
}
}
}
protected Map<String, Object> getVariablesToSet(ExecutionActionRequest actionRequest) {
Map<String, Object> variablesToSet = new HashMap<String, Object>();
for (RestVariable var : actionRequest.getVariables()) {
if (var.getName() == null) {
throw new ActivitiIllegalArgumentException("Variable name is required");
}
Object actualVariableValue = new RestResponseFactory().getVariableValue(var);
variablesToSet.put(var.getName(), actualVariableValue);
}
return variablesToSet;
}
protected RestVariable setSimpleVariable(
RestVariable restVariable, Execution execution, boolean isNew, UriInfo uriInfo) {
if (restVariable.getName() == null) {
throw new ActivitiIllegalArgumentException("Variable name is required");
}
// Figure out scope, revert to local is omitted
RestVariable.RestVariableScope scope = restVariable.getVariableScope();
if (scope == null) {
scope = RestVariable.RestVariableScope.LOCAL;
}
Object actualVariableValue = new RestResponseFactory().getVariableValue(restVariable);
setVariable(execution, restVariable.getName(), actualVariableValue, scope, isNew);
return constructRestVariable(
restVariable.getName(), restVariable.getValue(), scope, execution.getId(), false, uriInfo);
}
protected void addLocalVariables(
Execution execution,
int variableType,
Map<String, RestVariable> variableMap,
UriInfo uriInfo) {
RuntimeService runtimeService = BPMNOSGIService.getRumtimeService();
Map<String, Object> rawLocalvariables = runtimeService.getVariablesLocal(execution.getId());
List<RestVariable> localVariables =
new RestResponseFactory()
.createRestVariables(
rawLocalvariables,
execution.getId(),
variableType,
RestVariable.RestVariableScope.LOCAL,
uriInfo.getBaseUri().toString());
for (RestVariable var : localVariables) {
variableMap.put(var.getName(), var);
}
}
protected Response createExecutionVariable(
Execution execution,
boolean override,
int variableType,
HttpServletRequest httpServletRequest,
UriInfo uriInfo) {
Object result = null;
Response.ResponseBuilder responseBuilder = Response.ok();
List<RestVariable> inputVariables = new ArrayList<>();
List<RestVariable> resultVariables = new ArrayList<>();
if (Utils.isApplicationJsonRequest(httpServletRequest)) {
try {
ObjectMapper objectMapper = new ObjectMapper();
@SuppressWarnings("unchecked")
List<Object> variableObjects =
(List<Object>) objectMapper.readValue(httpServletRequest.getInputStream(), List.class);
for (Object restObject : variableObjects) {
RestVariable restVariable = objectMapper.convertValue(restObject, RestVariable.class);
inputVariables.add(restVariable);
}
} catch (Exception e) {
throw new ActivitiIllegalArgumentException(
"Failed to serialize to a RestVariable instance", e);
}
} else if (Utils.isApplicationXmlRequest(httpServletRequest)) {
JAXBContext jaxbContext = null;
try {
jaxbContext = JAXBContext.newInstance(RestVariableCollection.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
RestVariableCollection restVariableCollection =
(RestVariableCollection)
jaxbUnmarshaller.unmarshal(httpServletRequest.getInputStream());
if (restVariableCollection == null) {
throw new ActivitiIllegalArgumentException(
"xml request body could not be transformed to a "
+ "RestVariable Collection instance.");
}
List<RestVariable> restVariableList = restVariableCollection.getRestVariables();
if (restVariableList.size() == 0) {
throw new ActivitiIllegalArgumentException(
"xml request body could not identify any rest " + "variables to be updated");
}
for (RestVariable restVariable : restVariableList) {
inputVariables.add(restVariable);
}
} catch (JAXBException | IOException e) {
throw new ActivitiIllegalArgumentException(
"xml request body could not be transformed to a " + "RestVariable instance.", e);
}
}
if (inputVariables.size() == 0) {
throw new ActivitiIllegalArgumentException(
"Request didn't contain a list of variables to create.");
}
RestVariable.RestVariableScope sharedScope = null;
RestVariable.RestVariableScope varScope = null;
Map<String, Object> variablesToSet = new HashMap<String, Object>();
for (RestVariable var : inputVariables) {
// Validate if scopes match
varScope = var.getVariableScope();
if (var.getName() == null) {
throw new ActivitiIllegalArgumentException("Variable name is required");
}
if (varScope == null) {
varScope = RestVariable.RestVariableScope.LOCAL;
}
if (sharedScope == null) {
sharedScope = varScope;
}
if (varScope != sharedScope) {
throw new ActivitiIllegalArgumentException(
"Only allowed to update multiple variables in the same scope.");
}
if (!override && hasVariableOnScope(execution, var.getName(), varScope)) {
throw new BPMNConflictException(
"Variable '"
+ var.getName()
+ "' is already present on execution '"
+ execution.getId()
+ "'.");
}
Object actualVariableValue = new RestResponseFactory().getVariableValue(var);
variablesToSet.put(var.getName(), actualVariableValue);
resultVariables.add(
new RestResponseFactory()
.createRestVariable(
var.getName(),
actualVariableValue,
varScope,
execution.getId(),
variableType,
false,
uriInfo.getBaseUri().toString()));
}
if (!variablesToSet.isEmpty()) {
RuntimeService runtimeService = BPMNOSGIService.getRumtimeService();
if (sharedScope == RestVariable.RestVariableScope.LOCAL) {
runtimeService.setVariablesLocal(execution.getId(), variablesToSet);
} else {
if (execution.getParentId() != null) {
// Explicitly set on parent, setting non-local variables on execution itself will override
// local-variables if exists
runtimeService.setVariables(execution.getParentId(), variablesToSet);
} else {
// Standalone task, no global variables possible
throw new ActivitiIllegalArgumentException(
"Cannot set global variables on execution '"
+ execution.getId()
+ "', task is not part of process.");
}
}
}
RestVariableCollection restVariableCollection = new RestVariableCollection();
restVariableCollection.setRestVariables(resultVariables);
responseBuilder.entity(restVariableCollection);
return responseBuilder.status(Response.Status.CREATED).build();
}