Can the yui compressor maven plugin work with WTP? - eclipse

Question

I am using Eclipse Indigo with M2E to deploy a local web app using WTP. I am also using the yui-compressor plugin, which seems to work fine on the exploded war directory under target, but doesn't work with eclipse WTP. Is there a recommended way to set this up so I can develop locally and use the minified files?
Here is my yui config:
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<version>1.3.0</version>
<executions>
<execution>
<goals>
<goal>compress</goal>
</goals>
</execution>
</executions>
<configuration>
<nosuffix>true</nosuffix>
<force>true</force>
<jswarn>false</jswarn>
<linebreakpos>-1</linebreakpos>
<excludes>
<exclude>**/lib/*</exclude>
</excludes>
<aggregations>
<aggregation>
<insertNewLine>true</insertNewLine>
<output>${project.build.directory}/${project.build.finalName}/static/js/script-${timestamp}.min.js</output>
<includes>
<include>**/script/*.js</include>
</includes>
<excludes>
<exclude>**/lib/*</exclude>
</excludes>
</aggregation>
</aggregations>
</configuration>
</plugin>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<versionRange>[1.2,)</versionRange>
<goals>
<goal>compress</goal>
</goals>
</pluginExecutionFilter>
<action>
<execute />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>

Answer 1

The problem, I think, is that you are not telling to maven-war-plugin where to find generated resources.
You should try to add webResources section to the maven-war-plugin configuration, e.g.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<webResources>
<resource>
<filtering>true</filtering>
<directory>${basedir}/src/main/webapp</directory>
<excludes>
<exclude>**/pattern-for-non-minified-scripts</exclude>
</excludes>
</resource>
<resource>
<filtering>true</filtering>
<directory>${project.build.directory}/${project.build.finalName}</directory>
<includes>
<include>static/js/script-${timestamp}.min.js</include>
</includes>
</resource>
</webResources>
</configuration>
</plugin>
To see that WTP has picked up the minified files, check .settings/org.eclipse.wst.common.component file has the following line:
<wb-resource deploy-path="/" source-path="/target/m2e-wtp/web-resources"/>

Answer 2

Did you try <runOnIncremental>true</runOnIncremental>?
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<versionRange>[1.3.0,)</versionRange>
<goals>
<goal>compress</goal>
</goals>
</pluginExecutionFilter>
<action>
<execute>
<runOnIncremental>true</runOnIncremental>
</execute>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
To have M2E output the files into the /src/ directory rather than the /target/ directory, I use the following:
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<version>1.3.0</version>
<executions>
<execution>
<goals>
<goal>compress</goal>
</goals>
</execution>
</executions>
<configuration>
<sourceDirectory>${project.basedir}/src/main/webapp/resources/js</sourceDirectory>
<outputDirectory>${project.basedir}/src/main/webapp/resources/js-min</outputDirectory>
</configuration>
</plugin>
</plugins>
In my HTML I then reference the JavaScript file(s) in [...]/resources/js-min/.