state.java.drl

来自「rule engine drools-2.0-beta-18」· DRL 代码 · 共 78 行

<?xml version="1.0"?>

<rule-set name="State Example"
          xmlns="http://drools.org/rules"
          xmlns:java="http://drools.org/semantics/java"
          xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
          xs:schemaLocation="http://drools.org/rules rules.xsd
                             http://drools.org/semantics/java java.xsd">

    <java:import>org.drools.examples.state.State</java:import>

    <rule name="Bootstrap">
        <parameter identifier="a">
            <class-field field="name" value="A">State</class-field>
        </parameter>

        <java:condition>a.getState().equals("NOTRUN")</java:condition>

        <java:consequence>
            System.out.println(a.getName() + " finished" );
            a.setState("FINISHED");
        </java:consequence>
    </rule>

    <rule name="AtoB">
        <parameter identifier="a">
            <class-field field="name" value="A">State</class-field>
        </parameter>
        <parameter identifier="b">
            <class-field field="name" value="B">State</class-field>
        </parameter>

        <java:condition>a.getState().equals("FINISHED")</java:condition>
        <java:condition>b.getState().equals("NOTRUN")</java:condition>

        <java:consequence>
            System.out.println(b.getName() + " finished" );
            b.setState("FINISHED");
        </java:consequence>
    </rule>

    <rule name="BtoC">
        <parameter identifier="b">
            <class-field field="name" value="B">State</class-field>
        </parameter>
        <parameter identifier="c">
            <class-field field="name" value="C">State</class-field>
        </parameter>

        <java:condition>b.getState().equals("FINISHED")</java:condition>
        <java:condition>c.getState().equals("NOTRUN")</java:condition>

        <java:consequence>
            System.out.println(c.getName() + " finished" );
            c.setState("FINISHED");
        </java:consequence>
    </rule>

    <rule name="BtoD">
        <parameter identifier="b">
            <class-field field="name" value="B">State</class-field>
        </parameter>
        <parameter identifier="d">
            <class-field field="name" value="D">State</class-field>
        </parameter>

        <java:condition>b.getState().equals("FINISHED")</java:condition>
        <java:condition>d.getState().equals("NOTRUN")</java:condition>

        <java:consequence>
            System.out.println(d.getName() + " finished" );
            d.setState("FINISHED");
        </java:consequence>
    </rule>

  </rule-set>