import net.floodlightcontroller.accesscontrollist.ACLRule.Action; //导入依赖的package包/类
/**
 * Checks if the new ACL rule matches an existing rule. If existing allowing
 * rules matches the new denying rule, store the mappings.
 * 
 * @return true if the new ACL rule matches an existing rule, false
 *         otherwise
 */
private boolean checkRuleMatch(ACLRule newRule) {
	List<Integer> allowRuleList = new ArrayList<>();
	for (ACLRule existingRule : getRules()) {
		if (newRule.match(existingRule)) {
			return true;
		}

		if (existingRule.getAction() == Action.ALLOW
				&& newRule.getAction() == Action.DENY) {
			if (existingRule.match(newRule)) {
				allowRuleList.add(existingRule.getId());
			}
		}
	}
	deny2Allow.put(newRule.getId(), allowRuleList);
	return false;
}
 

import net.floodlightcontroller.accesscontrollist.ACLRule.Action; //导入依赖的package包/类
/**
 * Checks if the new ACL rule matches an existing rule. If existing allowing
 * rules matches the new denying rule, store the mappings.
 *
 * @return true if the new ACL rule matches an existing rule, false
 *         otherwise
 */
private boolean checkRuleMatch(ACLRule newRule) {
	List<Integer> allowRuleList = new ArrayList<>();
	for (ACLRule existingRule : getRules()) {
		if (newRule.match(existingRule)) {
			return true;
		}

		if (existingRule.getAction() == Action.ALLOW
				&& newRule.getAction() == Action.DENY) {
			if (existingRule.match(newRule)) {
				allowRuleList.add(existingRule.getId());
			}
		}
	}
	deny2Allow.put(newRule.getId(), allowRuleList);
	return false;
}
 

import net.floodlightcontroller.accesscontrollist.ACLRule.Action; //导入依赖的package包/类
@Override
public boolean addRule(ACLRule rule) {
	rule.setId(lastRuleId++);
	if (checkRuleMatch(rule)) {
		lastRuleId--;
		return false;
	}
	aclRules.put(rule.getId(), rule);
	logger.info("ACL rule(id:{}) is added.", rule.getId());
	if (rule.getAction() != Action.ALLOW) {
		enforceAddedRule(rule);
	}
	return true;
}