Transform GWT tools SVN in a Maven dependency

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Cristiano

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Oct 14, 2015, 3:01:42 AM10/14/15

to GWT Contributors

Hello All,

I'm playing with the src of GWT in these days to try out some hack, using Maven,

and while doing this I needed the GWT-Tools dependencies.

I've searched the dependencies in Maven Central Repo: http://search.maven.org/

but because some jar is rebased with JarJar, I've used maven-shade-plugin to rebase in the same way the dependencies I needed.

So, I came out with a "PoC" that proves it is possible to build (a subset of) GWT-Dev using dependencies based and rebased on maven.

As the actual way to manage the gwt-tools seems to be an "throw all in the bucket" approach,

with folders like Guava that includes 5 different versions:

Handwritten:gwt-tools cristcost$ ll lib/guava/:

total 0

drwxr-xr-x 7 cristcost staff 238 2 Nov 2013 guava-10.0.1

drwxr-xr-x 5 cristcost staff 170 2 Nov 2013 guava-15.0

drwxr-xr-x 5 cristcost staff 170 30 Giu 09:51 guava-16.0.1

drwxr-xr-x 6 cristcost staff 204 30 Giu 09:51 guava-18.0

drwxr-xr-x 10 cristcost staff 340 2 Nov 2013 guava-r06

Wouldn't it make sense to define a maven project what represents the required libs and try to get rid of gwt-tools folder for the build?

In this way, retrieving the dependencies to build with ant could be done easily with the command:

mvn dependency:copy-dependencies

(and the project dependencies are downloaded into target/dependecies)

In a new message I'll share a synthesis with significant excerpt of pom.xml configuration required to make the PoC to work.

Cristiano

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Oct 14, 2015, 3:02:16 AM10/14/15

to GWT Contributors

I have created 2 maven projects:

1. gwt-tools-rebased

2. gwt-tools

The first project declares these dependencies:

<groupId>com.google.guava</groupId>

<artifactId>guava</artifactId>

</dependency>

<groupId>com.google.javascript</groupId>

<artifactId>closure-compiler</artifactId>

</dependency>

</dependencies>

and rebases them with maven-shade-plugin:

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-shade-plugin</artifactId>

<phase>package</phase>

<goals>

<goal>shade</goal>

</goals>

<pattern>com.google.javascript.jscomp</pattern>

<shadedPattern>com.google.gwt.thirdparty.javascript.jscomp</shadedPattern>

</relocation>

<pattern>com.google.javascript.rhino</pattern>

<shadedPattern>com.google.gwt.thirdparty.javascript.rhino</shadedPattern>

</relocation>

<pattern>com.google.debugging.sourcemap</pattern>

<shadedPattern>com.google.gwt.thirdparty.debugging.sourcemap</shadedPattern>

</relocation>

<pattern>com.google.common</pattern>

<shadedPattern>com.google.gwt.thirdparty.guava.common</shadedPattern>

</relocation>

</relocations>

</configuration>

</execution>

</executions>

</plugin>

The second project declares these dependencies:

<groupId>net.cristcost</groupId>

<artifactId>gwt-tools-rebased</artifactId>

<version>${project.version}</version>

</dependency>

<groupId>org.apache.ant</groupId>

</dependency>

</dependency>

</dependency>

<groupId>xerces</groupId>

<artifactId>xercesImpl</artifactId>

</dependency>

<groupId>org.eclipse.tycho</groupId>

<artifactId>org.eclipse.jdt.core</artifactId>

</dependency>

</dependencies>

The execution of the mvn dependency:copy-dependencies command has this console output:

Handwritten:gwt-tools cristcost$ mvn dependency:copy-dependencies

[INFO] Scanning for projects...

[INFO]

[INFO] ------------------------------------------------------------------------

[INFO] Building GWT Tools as Maven dependencies test 1.0.0-SNAPSHOT

[INFO] ------------------------------------------------------------------------

[INFO]

[INFO] --- maven-dependency-plugin:2.8:copy-dependencies (default-cli) @ gwt-tools ---

[INFO] Copying concurrent-1.3.4.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/concurrent-1.3.4.jar

[INFO] Copying asm-5.0.3.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/asm-5.0.3.jar

[INFO] Copying org.eclipse.jdt.core-3.11.0.v20150520-2033.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/org.eclipse.jdt.core-3.11.0.v20150520-2033.jar

[INFO] Copying colt-1.2.0.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/colt-1.2.0.jar

[INFO] Copying gwt-tools-rebased-1.0.0-SNAPSHOT.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/gwt-tools-rebased-1.0.0-SNAPSHOT.jar

[INFO] Copying xercesImpl-2.11.0.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/xercesImpl-2.11.0.jar

[INFO] Copying xml-apis-1.4.01.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/xml-apis-1.4.01.jar

[INFO] Copying ant-1.7.1.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/ant-1.7.1.jar

[INFO] Copying ant-launcher-1.7.1.jar to /Users/cristcost/dev/cristcost/test/gwt-tools/target/dependency/ant-launcher-1.7.1.jar

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 1.119 s

[INFO] Finished at: 2015-10-14T08:42:18+02:00

[INFO] Final Memory: 16M/309M

[INFO] ------------------------------------------------------------------------

and produces this contents:

Handwritten:gwt-tools cristcost$ ll target/dependency/

total 31552

-rw-r--r-- 1 cristcost staff 1323005 14 Ott 08:42 ant-1.7.1.jar

-rw-r--r-- 1 cristcost staff 12143 14 Ott 08:42 ant-launcher-1.7.1.jar

-rw-r--r-- 1 cristcost staff 53231 14 Ott 08:42 asm-5.0.3.jar

-rw-r--r-- 1 cristcost staff 581945 14 Ott 08:42 colt-1.2.0.jar

-rw-r--r-- 1 cristcost staff 189284 14 Ott 08:42 concurrent-1.3.4.jar

-rw-r--r-- 1 cristcost staff 6678108 14 Ott 08:42 gwt-tools-rebased-1.0.0-SNAPSHOT.jar

-rw-r--r-- 1 cristcost staff 5716475 14 Ott 08:42 org.eclipse.jdt.core-3.11.0.v20150520-2033.jar

-rw-r--r-- 1 cristcost staff 1367760 14 Ott 08:42 xercesImpl-2.11.0.jar

-rw-r--r-- 1 cristcost staff 220536 14 Ott 08:42 xml-apis-1.4.01.jar

Handwritten:gwt-tools cristcost$

I hope this is inspiring and helpful

Cristiano

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