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>
>
>
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