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我试图使用Drools的决策表。 我现在面临的问题是,滴料不会与当前对象变量赋值给我。申报对象练成descision表
我得到这个错误从滴料:
Drools error: Rule Compilation error patient cannot be resolved
我的excel文件看起来是这样的:
和我的实验室部分代码如下所示:
DecisionTableConfiguration dtconf = KnowledgeBuilderFactory.newDecisionTableConfiguration();
dtconf.setInputType(DecisionTableInputType.XLS);
dtconf.setWorksheetName("Sheet1");
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
Resource r = ResourceFactory.newClassPathResource("rules.xls");
kbuilder.add(r, ResourceType.DTABLE, dtconf);
SpreadsheetCompiler compiler = new SpreadsheetCompiler();
String drl = compiler.compile(r.getInputStream(), InputType.XLS);
System.out.println(drl);
if(kbuilder.hasErrors()) {
for(KnowledgeBuilderError err : kbuilder.getErrors()) {
System.out.println("Drools error: " + err.getMessage());
}
model.addAttribute("droolErrors", kbuilder.getErrors());
return "index";
}
KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();
knowledgeBase.addKnowledgePackages(kbuilder.getKnowledgePackages());
StatefulKnowledgeSession dsess = knowledgeBase.newStatefulKnowledgeSession();
for(Patient p : patients) {
dsess.insert(p);
}
model.addAttribute("factCount", dsess.getFactCount());
KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(dsess, "test");
int res = dsess.fireAllRules();
System.out.println(res);
dsess.dispose();
logger.close();
生成的DRL是这样的:
package com.sorkmos.drools.domain;
//generated from Decision Table
import com.sorkmos.drools.domain.*;
// rule values at C11, header at C6
rule "Risks rules_11"
when
Patient(age == 75)
then
patient.setAge(22);
end
Drools error: Rule Compilation error patient cannot be resolved
这是很明显的,我需要设置的“病人”的变量。但我无法弄清楚如何。 正确的DRL版本会是这样:
package com.sorkmos.drools.domain;
//generated from Decision Table
import com.sorkmos.drools.domain.*;
// rule values at C11, header at C6
rule "Risks rules_11"
when
Patient(age == 75);
patient: Patient();
then
patient.setAge(22);
end
是的,我合并了C-H并将该变量设置为患者:患者。谢谢! – heldt 2013-03-18 08:52:35