/**
* Tries to locate resource id attribute
*
* @param result an evaluation result
* @return a resource id attribute
*/
private String getResourceId(Result result) {
if (log.isDebugEnabled()) {
log.debug("Mapping result=\"{}\" to resourceId", result);
}
Category resource = result.getAttribute(Categories.RESOURCE);
if (resource == null) {
return null;
}
Collection<Attribute> attrs = resource.getEntity().getAttributes(RESOURCE_ID);
if (attrs.size() == 1) {
Attribute resourceId = Iterables.getOnlyElement(attrs);
AttributeExp v = Iterables.getOnlyElement(resourceId.getValues());
Optional<TypeToString> toString = TypeToString.Types.getIndex().get(v.getType());
Preconditions.checkState(toString.isPresent());
return toString.get().toString(v);
}
Collection<AttributeExp> values =
resource.getEntity().getAttributeValues(CONTENT_SELECTOR, XacmlTypes.XPATH);
if (values.isEmpty() || values.size() > 1) {
return null;
}
AttributeExp v = Iterables.getOnlyElement(values);
Optional<TypeToString> toString = TypeToString.Types.getIndex().get(v.getType());
Preconditions.checkState(toString.isPresent());
return toString.get().toString(v);
}
@Override
public JsonElement serialize(Attribute src, Type typeOfSrc, JsonSerializationContext context) {
JsonObject o = new JsonObject();
o.addProperty(ATTRIBUTE_ID_PROPERTY, src.getAttributeId());
if (src.getIssuer() != null) {
o.addProperty(ISSUER_PROPERTY, src.getIssuer());
}
Collection<AttributeExp> values = src.getValues();
serializeValue(context, o, values);
// OMIT property if value is "false"
if (src.isIncludeInResult()) {
o.addProperty(INCLUDE_IN_RESULT_PROPERTY, src.isIncludeInResult());
}
return o;
}