/**
* 构建者模式
*
* @return
*/
public PolicyContext builderPolicy(EventIf eventif, PolicyObject policyObject) {
/**
* 在炉子里锻造PolicyContext，基本上从eventIf可以推断出必要的PolicyCondition和PolicyAction
*
* <p>需要根据taskid去查找对应的关联关系表
*/
if (eventif != null) {
List<PolicyCondition> policyConditions = policyObject.getPolicyConditionList();
List<PolicyAction> policyActions = policyObject.getPolicyActions();
if (eventif != null && policyConditions != null && policyActions != null) {
PolicyContext policyContext = new PolicyContext();
policyContext.setPolicyConditions(policyConditions);
policyContext.setPolicyActions(policyActions);
policyContext.setEvent(eventif);
for (PolicyCondition policyCondition : policyConditions) {
policyCondition.setParameters(eventif.getParameters());
}
for (PolicyAction policyAction : policyActions) {
policyAction.setParameters(eventif.getParameters());
}
return policyContext;
}
}
return null;
}
/**
* 在这个处理方法中，一个Policy包含了 组合的Conditions和组合的Actions， 所以返回是执行的结果集列表
*
* @param policyContext
* @return List<PolicyResult>
*/
private List<PolicyResult> processPolicyAction(PolicyContext policyContext) {
List<PolicyAction> policyActions = policyContext.getPolicyActions();
List<PolicyResult> policyResults = new ArrayList<>();
for (PolicyAction policyAction : policyActions) {
String actionId = policyAction.getId();
ActionEntry actionEntry = policyXmlManager.queryActionById(actionId);
if (actionEntry != null) {
String classPath = actionEntry.getClassPath();
try {
Policy policy = getPolicy(actionId, classPath);
PolicyResult policyResult = policy.execute(policyContext);
// 一个Policy执行结果放入结果集里
policyResults.add(policyResult);
} catch (Exception en) {
LOG.error("锻造对象失败{}", en.getMessage());
}
}
}
return policyResults;
}