The problem seems to be that Rats! calls System.exit() (or similar),
terminating the JVM. I would have thought that Ant would wrap this (the java
task is copied over from a build.xml and it doesn't terminate the Ant
build), but the following works by forcing the Rats! process into a separate
JVM:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.1</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
<configuration>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<argument>${basedir}/lib/xtc.jar</argument>
<argument>xtc.parser.Rats</argument>
<argument>-in</argument>
<argument>${project.build.sourceDirectory}</argument>
<argument>-out</argument>
<argument>${project.build.directory}/generated-sources/main/java/</argument>
<argument>${project.build.sourceDirectory}/Dot.rats</argument>
</arguments>
</configuration>
</plugin>
-Chris
clconway wrote:
>
> Funny story. I tried replacing the Ant task with a Maven plugin, by
> writing a RatsMojo class that invokes xtc.parser.Rats directly and
> replacing the plugin element above with
>
> <plugin>
> <groupId>edu.nyu.xtc</groupId>
> <artifactId>maven-xtc-plugin</artifactId>
> <executions>
> <execution>
> <phase>generate-sources</phase>
> <goals>
> <goal>rats</goal>
> </goals>
> <configuration>
>
> <inputDirectory>${project.build.sourceDirectory}</inputDirectory>
> <outputDirectory>
> ${project.build.directory}/generated-sources/main/java</outputDirectory>
>
> <grammarFile>${project.build.sourceDirectory}/Dot.rats</grammarFile>
> </configuration>
> </execution>
> </executions>
> </plugin>
>
> It does the exact same thing: it runs Rats! then terminates without
> compiling *any* of the Java files in the project.
>
> RatsMojo.java is attached.
>
> -Chris
> http://www.nabble.com/file/p24314823/RatsMojo.java RatsMojo.java
>
>
> clconway wrote:
>>
>> My project generates source code using the XTC parser generator
>> (http://cs.nyu.edu/rgrimm/xtc/). XTC doesn't have a Maven plugin that
>> I'm aware of, so I'm trying to build the parser using an Ant Java
>> task, like so:
>>
>> <plugin>
>> <artifactId>maven-antrun-plugin</artifactId>
>> <executions>
>> <execution>
>> <phase>generate-sources</phase>
>> <configuration>
>> <tasks>
>> <mkdir
>> dir="${project.build.directory}/generated-sources/main/java/" />
>> <java classpath="lib/xtc.jar"
>> classname="xtc.parser.Rats">
>> <arg line="-in ${project.build.sourceDirectory}" />
>> <arg line="-out
>> ${project.build.directory}/generated-sources/main/java/" />
>> <arg path="${project.build.sourceDirectory}/Dot.rats"
>> />
>> </java>
>> </tasks>
>> <sourceRoot>
>> ${project.build.directory}/generated-sources/main/java
>> </sourceRoot>
>> </configuration>
>> <goals>
>> <goal>run</goal>
>> </goals>
>> </execution>
>> </executions>
>> </plugin>
>>
>> The details of what XTC does aren't important: the end result is that
>> the above generates Dot.java and places it in
>> target/generated-sources/main/java. It works fine.
>>
>> The problem is that, with this plugin element in my pom.xml, none of
>> the Java files in the project get compiled. In a project generated
>> using "mvn archetype:create -DgroupId=foo -DartifactId=bar", if I run
>> "mvn compile" without the plugin element, I get:
>>
>> $ mvn compile
>> [INFO] Scanning for projects...
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] Building bar
>> [INFO] task-segment: [compile]
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] [resources:resources]
>> [INFO] Using default encoding to copy filtered resources.
>> [INFO] [compiler:compile]
>> [INFO] Compiling 1 source file to
>> /home/chris/src/tests/maven/project1/bar/target/classes
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] BUILD SUCCESSFUL
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] Total time: 1 second
>> [INFO] Finished at: Wed Jul 01 18:57:08 EDT 2009
>> [INFO] Final Memory: 6M/67M
>> [INFO]
>> ------------------------------------------------------------------------
>>
>> Whereas with the plugin element invoking XTC, I get (after a "mvn
>> clean"):
>>
>> $ mvn compile
>> [INFO] Scanning for projects...
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] Building bar
>> [INFO] task-segment: [compile]
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] [antrun:run {execution: default}]
>> [INFO] Executing tasks
>> [mkdir] Created dir:
>> /home/chris/src/tests/maven/project1/bar/target/generated-sources/main/java
>> Rats! Parser Generator, v. 1.14.2, (C) 2004-2008 Robert Grimm
>> Processing
>> /home/chris/src/tests/maven/project1/bar/src/main/java/Dot.rats ...
>>
>> The XTC process is not failing, AFAICT.
>>
>> I've tried other kinds of Ant tasks and they don't interfere with Java
>> compilation. For example, if I replace the task element above with an
>> echo task
>>
>> <tasks>
>> <mkdir
>> dir="${project.build.directory}/generated-sources/main/java/" />
>> <echo
>> file="${project.build.directory}/generated-sources/main/java/Dot.java">
>> public class Dot { }
>> </echo>
>> </tasks>
>>
>> I get
>>
>> $ mvn compile
>> [INFO] Scanning for projects...
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] Building bar
>> [INFO] task-segment: [compile]
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] [antrun:run {execution: default}]
>> [INFO] Executing tasks
>> [INFO] Executed tasks
>> [INFO] Registering compile source root
>> /home/chris/src/tests/maven/project1/bar/target/generated-sources/main/java
>> [INFO] [resources:resources]
>> [INFO] Using default encoding to copy filtered resources.
>> [INFO] [compiler:compile]
>> [INFO] Compiling 2 source files to
>> /home/chris/src/tests/maven/project1/bar/target/classes
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] BUILD SUCCESSFUL
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] Total time: 2 seconds
>> [INFO] Finished at: Wed Jul 01 19:03:34 EDT 2009
>> [INFO] Final Memory: 7M/79M
>> [INFO]
>> ------------------------------------------------------------------------
>>
>> Obviously there's something I'm not understanding about how Maven
>> executes the java task. Is there something simple that I'm doing
>> wrong? Is there an alternative way to accomplish this task that I
>> should try (perhaps a more "Maven-native" way)?
>>
>> The full pom.xml is attached.
>>
>> Regards,
>> Chris
>>
>> <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/maven-v4_0_0.xsd";>
>> <modelVersion>4.0.0</modelVersion>
>> <groupId>foo</groupId>
>> <artifactId>bar</artifactId>
>> <packaging>jar</packaging>
>> <version>1.0-SNAPSHOT</version>
>> <name>bar</name>
>> <url>http://maven.apache.org</url>
>> <dependencies>
>> <dependency>
>> <groupId>junit</groupId>
>> <artifactId>junit</artifactId>
>> <version>3.8.1</version>
>> <scope>test</scope>
>> </dependency>
>> <dependency>
>> <groupId>xtc</groupId>
>> <artifactId>xtc</artifactId>
>> <version>1.14.2</version>
>> <scope>system</scope>
>> <systemPath>${basedir}/lib/xtc.jar</systemPath>
>> </dependency>
>> </dependencies>
>> <build>
>> <plugins>
>> <!-- Run Rats! on some files -->
>> <plugin>
>> <artifactId>maven-antrun-plugin</artifactId>
>> <executions>
>> <execution>
>> <phase>generate-sources</phase>
>> <configuration>
>> <tasks>
>> <mkdir
>> dir="${project.build.directory}/generated-sources/main/java/" />
>> <java classpath="lib/xtc.jar"
>> classname="xtc.parser.Rats">
>> <arg line="-in ${project.build.sourceDirectory}" />
>> <arg line="-out
>> ${project.build.directory}/generated-sources/main/java/" />
>> <arg path="${project.build.sourceDirectory}/Dot.rats"
>> />
>> </java>
>> <!-- <echo
>> file="${project.build.directory}/generated-sources/main/java/Dot.java">
>> -->
>> <!-- public class Dot { } -->
>> <!-- </echo> -->
>> </tasks>
>> <sourceRoot>
>> ${project.build.directory}/generated-sources/main/java
>> </sourceRoot>
>> </configuration>
>> <goals>
>> <goal>run</goal>
>> </goals>
>> </execution>
>> </executions>
>> </plugin>
>> </plugins>
>> </build>
>> </project>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: [email protected]
>> For additional commands, e-mail: [email protected]
>>
>
>
--
View this message in context:
http://www.nabble.com/maven-antrun-plugin%3A-Java-classes-don%27t-compile-after-an-Ant-task-tp24300991p24325361.html
Sent from the Maven - Users mailing list archive at Nabble.com.
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
