最近发现 drools4 有点问题！动态增加规则后会出事实对象不触发规则！想问一下大家还有这样的问题！

最近发现 drools4 有点问题！动态增加规则后会出事实对象不触发规则！想问一下大家还有这样的问题！ [无满意答案结贴]

Qingjian
青见
等级:

发表于：2008-03-20 10:20:09 楼主

本人写了一个基于 drools 的后台java程序，初始化的时候加载一批规则，事实对象能正常触发这鞋规则！
但是在动态增加规则和移除规则的时候就会出现规则不会被事实对象触发！
代码：
/**
* 运行规则事实过滤
* @param factList 传入事实集合
* @param groupName
*/
public void runFactFilter(RuleBeanBase[] ruleBeanBase, String groupName, long tempLate, Connection conn, int beanNum){
try {
log.debug("---------statefulSession.fireAllRules ---------start-----");
for (int i = 0; i < beanNum; i++) {
if (ruleBeanBase[i] != null)
statefulSession.insert(ruleBeanBase[i]);
}

statefulSession.fireAllRules(new RuleNameStartsWithAgendaFilter("r" + groupName + "_"));
//log.debug("---------statefulSession.getFactHandle-----------");
for (int i = 0; i < beanNum; i++) {
if (ruleBeanBase[i] != null) {
FactHandle handle = statefulSession.getFactHandle(ruleBeanBase[i]);
if(handle !=null)
statefulSession.retract(handle);
}
}
log.debug("---------statefulSession.fireAllRules ------------over--");
} catch (Exception err) {
log.error("****** Insert WorkMomey is Exception******");
log.error("****** Exception info:******");
log.error("*-" + err.getMessage());
log.error("******************************************",err);
}
}
/**
* 插入一条新的规则
* @param rule
* @return 1 插入成功, -1 插入失败
*/
public synchronized short insertRule(String rule) {
try {
StringReader source = new StringReader(rule);
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(source);
Package pkg = builder.getPackage();
ruleBase.addPackage(pkg);
//System.out.println(ruleBase);
log.debug("success to insert a rule to rule cache:");
} catch (Exception ex) {
ex.printStackTrace();
log.error("error to insert a rule to rule cache.", ex);
return -1;
}
return 1;
}
/**
* 删除一条旧的规则
*
* @param ruleId
* @return 1 删除成功, -1 删除失败 0 没有该规则
*/
public synchronized short deleteRuleByRuleName(String ruleName) {
//log.debug("start delete data:" + ruleName);
Package[] pks = ruleBase.getPackages();
boolean exist = false;
for (int i = 0; i < pks.length; i++) {
// log.debug("package: " + pks[i].getName());
Rule[] rules = pks[i].getRules();
for (int j = 0; j < rules.length; j++) {
if (ruleName.equals(rules[j].getName())) {
exist = true;
}
}
}
if (!exist) {
// log.debug("rule:" + ruleName + " not exist.");
return 0;
}
// log.debug("start delete data:" + ruleName);
try {
if (ruleBase != null) {
ruleBase.removeRule("com.eaxactmkt.rules", ruleName);
// log.debug("success to remove rule data:" + ruleName);
}
} catch (Exception ex) {
log.error("error to delete a rule which name is " + ruleName, ex);
return -1;
}
return 1;
}
个人感觉代码上面没有什么问题！我使用的是 drools 4.04 ，

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