public static BasicPolicyMemento.Builder newPolicyMementoBuilder(Policy policy) {
BasicPolicyMemento.Builder builder = BasicPolicyMemento.builder();
builder.type = policy.getClass().getName();
builder.typeClass = policy.getClass();
builder.id = policy.getId();
builder.displayName = policy.getName();
// TODO persist config keys as well? Or only support those defined on policy class;
// current code will lose the ConfigKey type on rebind for anything not defined on class.
// Whereas entities support that.
// TODO Do we need the "nonPersistableFlagNames" that locations use?
Map<ConfigKey<?>, Object> config = ((AbstractPolicy) policy).getConfigMap().getAllConfig();
for (Map.Entry<ConfigKey<?>, Object> entry : config.entrySet()) {
ConfigKey<?> key = checkNotNull(entry.getKey(), "config=%s", config);
Object value = configValueToPersistable(entry.getValue());
builder.config.put(key.getName(), value);
}
Map<String, Object> persistableFlags =
MutableMap.<String, Object>builder()
.putAll(
FlagUtils.getFieldsWithFlagsExcludingModifiers(
policy, Modifier.STATIC ^ Modifier.TRANSIENT))
.remove("id")
.remove("name")
.build();
builder.config.putAll(persistableFlags);
return builder;
}
/**
* finds the policy indicated by the given ID or name.
*
* @see {@link getPolicy(String,String,String)}.
* <p>
* @throws 404 or 412 (unless input is null in which case output is null)
*/
public Policy getPolicy(Entity entity, String policy) {
if (policy == null) return null;
for (Policy p : entity.getPolicies()) {
if (policy.equals(p.getId())) return p;
}
for (Policy p : entity.getPolicies()) {
if (policy.equals(p.getName())) return p;
}
throw WebResourceUtils.notFound("Cannot find policy '%s' in entity '%s'", policy, entity);
}