你如何预编译Drools规则？

Question

我想将我的.drl文件预编译为.class文件,这样就不必在运行时编译它们.该文档使听起来像kie-maven-plugin这样做,但它不会为我生成任何东西.它编译规则文件但不输出任何内容.有什么建议？

我正在使用mvn package命令,我的pom.xml文件如下:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.kie</groupId>
    <artifactId>kie-parent-with-dependencies</artifactId>
    <version>6.0.1.Final</version>
    <!-- relativePath causes out-of-date problems on hudson slaves -->
    <!--<relativePath>../droolsjbpm-build-bootstrap/pom.xml</relativePath>-->
  </parent>

  <packaging>kjar</packaging>
  <artifactId>default-kiesession</artifactId>
  <name>Drools API examples - Default KieSession</name>

  <dependencies>
    <dependency>
      <groupId>org.drools</groupId>
      <artifactId>drools-compiler</artifactId>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.kie</groupId>
        <artifactId>kie-maven-plugin</artifactId>
        <version>6.0.1.Final</version>
        <extensions>true</extensions>
        <dependencies>
          <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.6.1</version>
          </dependency>
      </dependencies>
      </plugin>
    </plugins>
  </build>

  <repositories>
    <!-- Bootstrap repository to locate the parent pom when the parent pom has not been build locally. -->
    <repository>
      <id>jboss-public-repository-group</id>
      <name>JBoss Public Repository Group</name>
      <url>http://repository.jboss.org/nexus/content/groups/public/</url>
      <layout>default</layout>
      <releases>
        <enabled>true</enabled>
        <updatePolicy>never</updatePolicy>
      </releases>
      <snapshots>
        <enabled>true</enabled>
        <updatePolicy>daily</updatePolicy>
      </snapshots>
    </repository>
  </repositories>

  <scm>
    <connection>scm:git:git@github.com:droolsjbpm/drools.git</connection>
    <developerConnection>scm:git:git@github.com:droolsjbpm/drools.git</developerConnection>
    <url>https://github.com/droolsjbpm/drools</url>
  </scm>
</project>

Answer 1

6.0.1.Final中存在一个错误导致maven插件无法将编译后的字节码保存在kjar中.之后修复了,所以如果您使用6.0.2-SNAPSHOT(社区)版本或RedHat BRMS 6.0.1.GA(产品)版本,它将起作用.

BZ门票:https://bugzilla.redhat.com/show_bug.cgi？ id = 1063255

修复错误的提交:https://github.com/droolsjbpm/drools/commit/94b9ccf810100c7ec3f8ed186111720ddb2729d3

仅供参考,当生成正确的kjar时,它在jar中为每个定义的kbase包含一个kbase.cache文件.这些缓存文件包含已编译的字节码.