/**
* Build arguments for resource method invocation. Combines various types of arguments into a
* single array.
*
* @param positionalArguments pass-through arguments coming from {@link RestLiArgumentBuilder}
* @param resourceMethod the resource method
* @param context {@link ResourceContext}
* @param template {@link DynamicRecordTemplate}
* @return array of method argument for method invocation.
*/
@SuppressWarnings("deprecation")
public static Object[] buildArgs(
final Object[] positionalArguments,
final ResourceMethodDescriptor resourceMethod,
final ResourceContext context,
final DynamicRecordTemplate template) {
List<Parameter<?>> parameters = resourceMethod.getParameters();
Object[] arguments = Arrays.copyOf(positionalArguments, parameters.size());
fixUpComplexKeySingletonArraysInArguments(arguments);
for (int i = positionalArguments.length; i < parameters.size(); ++i) {
Parameter<?> param = parameters.get(i);
try {
if (param.getParamType() == Parameter.ParamType.KEY
|| param.getParamType() == Parameter.ParamType.ASSOC_KEY_PARAM) {
Object value = context.getPathKeys().get(param.getName());
if (value != null) {
arguments[i] = value;
continue;
}
} else if (param.getParamType() == Parameter.ParamType.CALLBACK) {
continue;
} else if (param.getParamType() == Parameter.ParamType.PARSEQ_CONTEXT_PARAM
|| param.getParamType() == Parameter.ParamType.PARSEQ_CONTEXT) {
continue; // don't know what to fill in yet
} else if (param.getParamType() == Parameter.ParamType.HEADER) {
HeaderParam headerParam = param.getAnnotations().get(HeaderParam.class);
String value = context.getRequestHeaders().get(headerParam.value());
arguments[i] = value;
continue;
}
// Since we have multiple different types of MaskTrees that can be passed into resource
// methods,
// we must evaluate based on the param type (annotation used)
else if (param.getParamType() == Parameter.ParamType.PROJECTION
|| param.getParamType() == Parameter.ParamType.PROJECTION_PARAM) {
arguments[i] = context.getProjectionMask();
continue;
} else if (param.getParamType() == Parameter.ParamType.METADATA_PROJECTION_PARAM) {
arguments[i] = context.getMetadataProjectionMask();
continue;
} else if (param.getParamType() == Parameter.ParamType.PAGING_PROJECTION_PARAM) {
arguments[i] = context.getPagingProjectionMask();
continue;
} else if (param.getParamType() == Parameter.ParamType.CONTEXT
|| param.getParamType() == Parameter.ParamType.PAGING_CONTEXT_PARAM) {
PagingContext ctx =
RestUtils.getPagingContext(context, (PagingContext) param.getDefaultValue());
arguments[i] = ctx;
continue;
} else if (param.getParamType() == Parameter.ParamType.PATH_KEYS
|| param.getParamType() == Parameter.ParamType.PATH_KEYS_PARAM) {
arguments[i] = context.getPathKeys();
continue;
} else if (param.getParamType() == Parameter.ParamType.RESOURCE_CONTEXT
|| param.getParamType() == Parameter.ParamType.RESOURCE_CONTEXT_PARAM) {
arguments[i] = context;
continue;
} else if (param.getParamType() == Parameter.ParamType.VALIDATOR_PARAM) {
RestLiDataValidator validator =
new RestLiDataValidator(
resourceMethod.getResourceModel().getResourceClass().getAnnotations(),
resourceMethod.getResourceModel().getValueClass(),
resourceMethod.getMethodType());
arguments[i] = validator;
continue;
} else if (param.getParamType() == Parameter.ParamType.POST) {
// handle action parameters
if (template != null) {
DataMap data = template.data();
if (data.containsKey(param.getName())) {
arguments[i] = template.getValue(param);
continue;
}
}
} else if (param.getParamType() == Parameter.ParamType.QUERY) {
Object value;
if (DataTemplate.class.isAssignableFrom(param.getType())) {
value = buildDataTemplateArgument(context, param);
} else {
value = buildRegularArgument(context, param);
}
if (value != null) {
arguments[i] = value;
continue;
}
} else if (param.getParamType() == Parameter.ParamType.BATCH
|| param.getParamType() == Parameter.ParamType.RESOURCE_KEY) {
// should not come to this routine since it should be handled by passing in
// positionalArguments
throw new RoutingException(
"Parameter '" + param.getName() + "' should be passed in as a positional argument",
HttpStatus.S_400_BAD_REQUEST.getCode());
} else {
// unknown param type
throw new RoutingException(
"Parameter '"
+ param.getName()
+ "' has an unknown parameter type '"
+ param.getParamType().name()
+ "'",
HttpStatus.S_400_BAD_REQUEST.getCode());
}
} catch (TemplateRuntimeException e) {
throw new RoutingException(
"Parameter '" + param.getName() + "' is invalid",
HttpStatus.S_400_BAD_REQUEST.getCode());
}
try {
// Handling null-valued parameters not provided in resource context or entity body
// check if it is optional parameter
if (param.isOptional() && param.hasDefaultValue()) {
arguments[i] = param.getDefaultValue();
} else if (param.isOptional() && !param.getType().isPrimitive()) {
// optional primitive parameter must have default value or provided
arguments[i] = null;
} else {
throw new RoutingException(
"Parameter '" + param.getName() + "' is required",
HttpStatus.S_400_BAD_REQUEST.getCode());
}
} catch (ResourceConfigException e) {
// Parameter default value format exception should result in server error code 500.
throw new RestLiServiceException(
HttpStatus.S_500_INTERNAL_SERVER_ERROR,
"Parameter '" + param.getName() + "' default value is invalid",
e);
}
}
return arguments;
}
