Maven Versions Plugin ignoring releases in releases repo - maven-versions-plugin

I'm trying to use the Maven Versions plugin but am blocked by an issue that is causing the plugin to not locate release artefacts in the company release artefact repository. A section of a test POM that demonstrates the issue ...
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.xxxx.sage</groupId>
<artifactId>sage-core-health</artifactId>
<version>1.36-SNAPSHOT</version>
</dependency>
</dependencies>
</dependencyManagement>
<repositories>
<repository>
<id>releases</id>
<url>http://releases.dev.xxxx.org/archiva/repository/releases</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
<releases>
<enabled>true</enabled>
</releases>
</repository>
</repositories>
If I execute versions:force-releases, the artefact version number is not updated. Maven logs the following ...
[DEBUG] Looking for a release of org.xxxx.sage:sage-core-health:jar:1.36-SNAPSHOT
[DEBUG] Skipping update check for artifact org.xxxx.sage:sage-core-health (C:\Users\williams\.m2\repository\org\xxxx\sage\sage-core-health\maven-metadata-releases.xml) from disabled repository releases (http://releases.dev.xxxx.org/archiva/repository/releases)
[DEBUG] Skipping update check for artifact org.xxxx.sage:sage-core-health (C:\Users\williams\.m2\repository\org\xxxx\sage\sage-core-health\maven-metadata-central.xml) from disabled repository central (https://repo.maven.apache.org/maven2)
[INFO] No release of org.xxxx.sage:sage-core-health:jar:1.36-SNAPSHOT to force.
Version 1.36 is definitely in the release artefact repository. If I change the repository definition to enable snapshots and execute the same goal, the artefact version number is correctly updated to 1.36.
I've been trying to get this plugin working for days but it only seems to locate release artefacts in the release artefact repository when I enable it for SNAPSHOTs ...
<repositories>
<repository>
<id>releases</id>
<url>http://releases.dev.xxxx.org/archiva/repository/releases</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
<releases>
<enabled>true</enabled>
</releases>
</repository>
</repositories>
What am I doing wrong?
Thanks

This happens because your company artifact is a SNAPSHOT version so Maven by default looks in the configured snapshot repository for the latest snapshot version. In order to properly look in the releases repository, remove SNAPSHOT from your artifact version and Maven will default to looking in the releases repository. Maven determines which repository to look for using the version and if it contains "SNAPSHOT" it will use the snapshot repository.

Related

New Vaadin 14 app fails to run, error "Failed to determine 'node' tool." Missing Node.js and npm tools

I used the Get Started page to create a new Vaadin 14 app, after choosing the Plain Java Servlet option.
The web page successfully downloaded a .zip file which I unzipped, and opened with IntelliJ Ultimate Edition version 2019.2. I waited a few minutes while Maven did its thing, downloading and reconfiguring the project. Eventually I went to the Maven panel within IntelliJ, and ran the Lifecycle items clean and install.
I received the following error message on the console.
[ERROR] Failed to execute goal com.vaadin:vaadin-maven-plugin:14.0.0:prepare-frontend (default) on project acme: Execution default of goal com.vaadin:vaadin-maven-plugin:14.0.0:prepare-frontend failed:
[ERROR]
[ERROR] ======================================================================================================
[ERROR] Failed to determine 'node' tool.
[ERROR] Please install it either:
[ERROR] - by following the https://nodejs.org/en/download/ guide to install it globally
[ERROR] - or by running the frontend-maven-plugin goal to install it in this project:
[ERROR] $ mvn com.github.eirslett:frontend-maven-plugin:1.7.6:install-node-and-npm -DnodeVersion="v10.16.0"
[ERROR] ======================================================================================================
See discussion on Vaadin Forum.
I filed Ticket # 6262 Configure Maven to automatically install Node.js & npm, suggesting to the Vaadin team that requiring and omitting Node.js & npm is a problem.
Update: Non-issue in 14.2
Vaadin 14.2 & 16 have been changed to now include automatically the necessary npm tool in a Maven-driven project. No need to manually install Node.js & npm.
To quote this blog post:
Automatic Node.js install
Starting from versions 14.2 and 16, the Node.js install (which includes npm) happens automatically. It is installed to a .vaadin folder inside the home folder, and reused from there for all Vaadin projects. As before, Node is only used to build the frontend side of things; it does not run after you deploy for production!
And further improvement: pnpm instead of npm.
Frontend dependency management that just works - pnpm
Behind the scenes, npm has been used to manage frontend dependencies since 14.0. Now, we’ve added support for pnpm, which introduces the following benefits:
Shorter build time, compared to npm on your local machine and CI system, because pnpm only downloads packages once and reuses them from a local cache.
No need to delete package.json, lock file or the node_modules folder when updating the Vaadin version in your project.
In 14.2, npm is still used by default, but we encourage you to test pnpm and give us your feedback. Trying pnpm is easy: there is no migration, just enable it by using a configuration property or Maven plugin configuration. You can learn more about pnpm here. Vaadin 16 will use pnpm by default.
I have verified this works well. I have now manually removed the Node.js/npm installation from my Mac.
tl;dr
The Vaadin 14 team expects you to have Node.js and npm tools installed on your computer.
As alternative, Vaadin 14 seems to be working with Node.js/npm being automatically installed within your project (rather than globally on your computer) by the frontend-maven-plugin tool you can specify in your Maven POM file. See XML snippet below for your POM.
If you would prefer to install Mode/npm globally on your computer, be sure to read the other Answer by Tom Novosad.
Details
As of Vaadin 14, the Vaadin team is switching:
From HTML Imports, Bower, and WebJars
To ES6 Modules, npm, and Webpack, with Node.js
…as part of their transition from Polymer 2 to Polymer 3.
See blog post, Bower and npm in Vaadin 14+.
Hopefully, as Vaadin-on-Java users, we need not care about these underlying technical details… but for one thing: Unfortunately, the npm & Node.js tools are required but not bundled within your Vaadin project by default.
You have two solutions:
Install the tools globally.
Install within your project.
I prefer the latter. And I prefer to have Maven auto-install them within my project, with less housekeeping for me to do manually.
CAVEAT: I do not know the limitations or ramifications of my node/npm-per-project solution. I barely have any idea of the purpose or nature of either node/npm, and have no idea how Vaadin makes use of them. So use this solution at your own risk. All I can say is that it seems to be working for me.
Add frontend-maven-plugin to your project
The frontend-maven-plugin tool can be used by Maven to download and install Node.js with npm within your Vaadin project.
Open the Maven POM file within your Vaadin project.
Add the following block inside the <build> <defaultGoal>jetty:run</defaultGoal> <plugins> element of that POM.
<plugin>
<groupId>com.github.eirslett</groupId>
<artifactId>frontend-maven-plugin</artifactId>
<!-- Use the latest released version:
https://repo1.maven.org/maven2/com/github/eirslett/frontend-maven-plugin/ -->
<version>1.8.0</version>
<executions>
<execution>
<!-- optional: you don't really need execution ids, but it looks nice in your build log. -->
<id>install node and npm</id>
<goals>
<goal>install-node-and-npm</goal>
</goals>
<!-- optional: default phase is "generate-resources" -->
<phase>generate-resources</phase>
</execution>
</executions>
<configuration>
<nodeVersion>v10.16.3</nodeVersion>
<!-- optional: with node version greater than 4.0.0 will use npm provided by node distribution -->
<!-- <npmVersion>2.15.9</npmVersion>-->
<!-- optional: where to download node and npm from. Defaults to https://nodejs.org/dist/ -->
<!-- <downloadRoot>http://myproxy.example.org/nodejs/</downloadRoot>-->
</configuration>
</plugin>
Of course, you can tweak that snippet to use the latest version numbers. Check the Node.js page for the latest versions number.
Notice that we commented-out the npm item, as that tool is bundled with the latest versions of Node.js.
Remaining steps:
In the Maven panel within IntelliJ, run the Lifecycle items named clean and install. Wait a moment as some more items are downloaded and configured. (Notice the item "Installing node version v10.16.3" in your console history.)
In that same panel, in the section Plugins > jetty, run the jetty:run item. Wait a moment as the Jetty server launches to run your Vaadin app.
On the console you should see something like this (that mysterious Quiet Time warning is perennial with all releases of Vaadin):
[INFO] Started Jetty Server
[INFO] Using Non-Native Java sun.nio.fs.PollingWatchService
[WARNING] Quiet Time is too low for non-native WatchService [sun.nio.fs.PollingWatchService]: 1000 < 5000 ms (defaulting to 5000 ms)
Point your web browser to: http://localhost:8080/ to see the "Click Me" button appear, as your app successfully runs.
This solution came from the project page for the Maven plugin frontend-maven-plugin. Note that the example POM fragment there is incorrect, failing to wrap the <execution> tag within a plural <executions> tag. I filed ticket # 838 there.
You may want to follow this discussion in the Vaadin Forums.
For your reference, here is a complete POM file to compare to yours.
<?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>
<groupId>work.basil.example</groupId>
<artifactId>acme</artifactId>
<name>acme</name>
<version>2.0-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<maven.compiler.source>13</maven.compiler.source>
<maven.compiler.target>13</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<failOnMissingWebXml>false</failOnMissingWebXml>
<vaadin.version>14.0.5</vaadin.version>
<drivers.downloader.phase>pre-integration-test</drivers.downloader.phase>
</properties>
<repositories>
<repository>
<id>central</id>
<url>https://repo1.maven.org/maven2/</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<!-- Repository used by many Vaadin add-ons -->
<repository>
<id>Vaadin Directory</id>
<url>https://maven.vaadin.com/vaadin-addons</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<url>https://repo1.maven.org/maven2/</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<type>pom</type>
<scope>import</scope>
<version>${vaadin.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<!-- Replace artifactId with vaadin-core to use only free components -->
<artifactId>vaadin</artifactId>
<exclusions>
<!-- Webjars are only needed when running in Vaadin 13 compatibility mode -->
<exclusion>
<groupId>com.vaadin.webjar</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>org.webjars.bowergithub.insites</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>org.webjars.bowergithub.polymer</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>org.webjars.bowergithub.polymerelements</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>org.webjars.bowergithub.vaadin</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>org.webjars.bowergithub.webcomponents</groupId>
<artifactId>*</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- Added to provide logging output as Vaadin uses -->
<!-- the unbound SLF4J no-operation (NOP) logger implementation -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-testbench</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<defaultGoal>jetty:run</defaultGoal>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</plugin>
<!-- Jetty plugin for easy testing without a server -->
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.4.19.v20190610</version>
<configuration>
<!-- If using IntelliJ IDEA with autocompilation, this
might cause lots of unnecessary compilations in the
background.-->
<scanIntervalSeconds>2</scanIntervalSeconds>
<!-- Use war output directory to get the webpack files -->
<webAppConfig>
<allowDuplicateFragmentNames>true</allowDuplicateFragmentNames>
</webAppConfig>
</configuration>
</plugin>
<!--
Take care of synchronizing java dependencies and imports in
package.json and main.js files.
It also creates webpack.config.js if not exists yet.
-->
<plugin>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-maven-plugin</artifactId>
<version>${vaadin.version}</version>
<executions>
<execution>
<goals>
<goal>prepare-frontend</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.github.eirslett</groupId>
<artifactId>frontend-maven-plugin</artifactId>
<!-- Use the latest released version:
https://repo1.maven.org/maven2/com/github/eirslett/frontend-maven-plugin/ -->
<version>1.8.0</version>
<executions>
<execution>
<!-- optional: you don't really need execution ids, but it looks nice in your build log. -->
<id>install node and npm</id>
<goals>
<goal>install-node-and-npm</goal>
</goals>
<!-- optional: default phase is "generate-resources" -->
<phase>generate-resources</phase>
</execution>
</executions>
<configuration>
<nodeVersion>v10.16.3</nodeVersion>
<!-- optional: with node version greater than 4.0.0 will use npm provided by node distribution -->
<!-- <npmVersion>2.15.9</npmVersion>-->
<!-- optional: where to download node and npm from. Defaults to https://nodejs.org/dist/ -->
<!-- <downloadRoot>http://myproxy.example.org/nodejs/</downloadRoot>-->
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<!-- Production mode is activated using -Pproduction -->
<id>production</id>
<properties>
<vaadin.productionMode>true</vaadin.productionMode>
</properties>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>flow-server-production-mode</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>build-frontend</goal>
</goals>
<phase>compile</phase>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>integration-tests</id>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.4.19.v20190610</version>
<configuration>
<scanIntervalSeconds>0</scanIntervalSeconds>
<stopPort>8081</stopPort>
<stopWait>5</stopWait>
<stopKey>${project.artifactId}</stopKey>
</configuration>
<executions>
<execution>
<id>start-jetty</id>
<phase>pre-integration-test</phase>
<goals>
<goal>deploy-war</goal>
</goals>
</execution>
<execution>
<id>stop-jetty</id>
<phase>post-integration-test</phase>
<goals>
<goal>stop</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- Runs the integration tests (*IT) after the server is started -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>3.0.0-M3</version>
<executions>
<execution>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
</execution>
</executions>
<configuration>
<trimStackTrace>false</trimStackTrace>
<enableAssertions>true</enableAssertions>
<systemPropertyVariables>
<!-- Pass location of downloaded webdrivers to the tests -->
<webdriver.chrome.driver>${webdriver.chrome.driver}</webdriver.chrome.driver>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<groupId>com.lazerycode.selenium</groupId>
<artifactId>driver-binary-downloader-maven-plugin</artifactId>
<version>1.0.17</version>
<configuration>
<onlyGetDriversForHostOperatingSystem>true
</onlyGetDriversForHostOperatingSystem>
<rootStandaloneServerDirectory>
${project.basedir}/drivers/driver
</rootStandaloneServerDirectory>
<downloadedZipFileDirectory>
${project.basedir}/drivers/driver_zips
</downloadedZipFileDirectory>
<customRepositoryMap>
${project.basedir}/drivers.xml
</customRepositoryMap>
</configuration>
<executions>
<execution>
<!-- use phase "none" to skip download step -->
<phase>${drivers.downloader.phase}</phase>
<goals>
<goal>selenium</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>
The Problem is in method
FrontendUtils::getNpmExecutable(String baseDir)
from flow-server.jar. This method tries to locate
node/node_modules/npm/bin/npm-cli.js
in $baseDir (which is project root folder in case of prepare-frontend goal). When that path does not exist, code continues executing "where/which npm.cmd" to get absolute path of 'npm.cmd'. In my case, got NodeJS installed globally, it returns correct path.
Subsequently code continues trying to execute "path-to-npm.cmd\npm.cmd -v", to ensure that npm.cmd exists and is runnable.
And here is the problem in method:
ProcessBuilder FrontEndUtils::createProcessBuilder(List<String> command)
In this method under certain circumstances program code sets environment variable 'PATH' to path of npm.cmd (since ProcssBuilder.environment() returns map which does not contain 'PATH' variable).
Next when trying to execute command 'path-to-npm\npm.cmd -v', the exit value of the process is 1, and stderr is non-empty, because 'chcp' command is called before other stuff in 'npm.cmd' (probably SETLOCAL command), but since now 'chcp' is not in PATH.
Following code evaluates these conditions (exit code 1, stderr nonempty) as an error in execution of npm.cmd and
Failed to determine 'npm.cmd' tool.
message is printed.
This happens on my Windows 10, Vaadin Flow 14.0.1, NodeJS 10.16.3 installed globally.
Also got the same issues when running tomcat server with an application, since $baseDir variable contains path to tomcat bin directory.
Workaround
As a workaround it is sufficient to make symbolic link of NodeJS directory into your project root (and if application running on Tomcat, also make link of NodeJS to Tomcat's bin directory).
This problem appeared when I was testing new Vaadin 14.
I followed instructions, installed node, but I was doing that with previously opened Idea with another project (other to the this).
The problem went away only when I restarted Idea.
To be more exact there is a case when the real error can be found in the logs at plugin run:
Command '[C:\Program Files\nodejs\npm.cmd, -v]' failed with exit code '1'
but if you run the same command from prompt then you see that nothing wrong with the command and exit code.
As somebody mentioned the problem is that Windows tries to run "chcp" but it is not on the PATH (manipulated by the maven plugin). This happened in my case since I modified in the registry to run cmd always with UTF encoding. In Windows this is implemented by executing "chcp 65001" along with (before) any batch or command files like npm.cmd ...
My simple solution was copy chcp.com from System32 dir to nodejs directory...
After the installation of node i had the same problem compiling vaadin app.
It was needed to restart the PC to locate node and run successfully.
The solution I found was to add
-Dvaadin.project.basedir="/home/me/project/root/directory"
to your JVM startup args.
The answer came from this thread.
https://vaadin.com/forum/thread/18491365/vaadin-14-3-1-prepare-frontend-neede-at-every-eclipse-start
Almost same here.
Win 10, JDK 11.0.2, node 10.16.2 installed globally
mvn results in
[ERROR] Failed to determine 'npm.cmd' tool.
[ERROR] Please install it either:
[ERROR] - by following the https://nodejs.org/en/download/ guide to install it globally
[ERROR] - or by running the frontend-maven-plugin goal to install it in this project:
[ERROR] $ mvn com.github.eirslett:frontend-maven-plugin:1.7.6:install-node-and-npm -DnodeVersion="v10.16.0"
So... first advice to install it globally fails. second one works.

Mapr Hbase file jar

hello I'm new in learner in mapr , can someone give me a list of jars or a pom.xml example file , for developing hbase apps, by the way i'm using sandbox version 5.0.0 for testing and thanks everybody
Add the following to your Maven project file:
Repository
<repository>
<id>mapr-maven</id>
<url>http://repository.mapr.com/maven/</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>false</enabled></snapshots>
</repository>
Dependencies
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-client</artifactId>
<version>0.98.9-mapr-1503-m7-4.1.0</version>
</dependency>
Also do you know if you are using HBase or MapR-DB tables in your application?
You can find a complete MapR-DB sample application here : https://github.com/tgrall/mapr-nosql-samples

Groovy ShortTypeHandling ClassNotFoundException

I have a groovy application that uses groovy version 2.2.1. My groovy app was previously running fine but has recently started throwing this exception:
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
at com.app.Main.main(Main.groovy:83)Caused by: java.lang.ClassNotFoundException: org.codehaus.groovy.runtime.typehandling.ShortTypeHandling
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
The ShortTypeHandling class was not even introduced until groovy 2.3.0. How can it be referenced in a groovy app running version 2.2.1? I can solve this problem by replacing the groovy-all-2.2.1.jar with groovy-all-2.3.0.jar in my pom but that doesn't root cause the issue.
ShortTypeHandling was introduced in groovy-all-2.3.0.jar so the quick fix was to replace the older groovy-all-x.x.x.jar with groovy-all-2.3.0.jar. This solved the runtime ShorTypeHandling ClassNotFoundException but also created new problems by introducing a new groovy-all.jar dependency in the application.
The real issue was how the groovy compiler was being invoked via maven. Because I introduced spock which required groovy 2.0, I needed to update the maven entries for the groovy-eclipse-compiler dependency. Here are the updated maven entries for working with groovy 2.x:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<compilerId>groovy-eclipse-compiler</compilerId>
<!-- Java version -->
<source>1.7</source>
<target>1.7</target>
</configuration>
<dependencies>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-eclipse-compiler</artifactId>
<version>2.8.0-01</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-eclipse-batch</artifactId>
<!-- Groovy version -->
<version>2.1.8-01</version>
</dependency>
</dependencies>
</plugin>
With this in place, I could leave my groovy-all dependency the way I originally had it for the working/fully tested application like this:
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<!-- If possible, its better if this matches 2.1.8 in the plugin definition -->
<!-- but 2.2.1 worked fine here and allowed me to keep the original pom definition -->
<version>2.2.1</version>
</dependency>
The application runtime no longer references the ShortTypeHandling class and everything worked as it previously did.
You have to add (If you are using Gradle)
compile 'org.codehaus.groovy:groovy-backports-compat23:2.4.5'
I've just had this after updating the groovy-eclipse Feature in Eclipse (in order to try and fix intermittent save issues caused by https://jira.codehaus.org/browse/GRECLIPSE-1519). Specifically in my case, my Groovy JUnit tests were throwing this exception.
In light of the suggestions above, I checked my Eclipse settings, and it was using Groovy 2.3.4.xx whereas my Maven POM was specifying 2.1.8.xx. I went to Window -> Preferences -> Groovy -> Compiler and clicked "Switch to 2.1.8.xx...", restarting Eclipse when prompted, and this fixed it.
I've solved this issue by adding this dependency on my POM:
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-backports-compat23</artifactId>
<version>2.4.5</version>
</dependency>
Then, it works like a charm.
Matthew Wise's solution worked for me, but in addition to restarting eclipse, I also had to do a project -> clean for it to recompile with the new compiler.
(I would have commented on his answer, but stack overflow has this stupid rule that you can't comment until you get more reputation)
I faced similar issue in our project. Surprisingly groovy version was not an issue.
I was building the project with older version of gradle than the expected gradle version for the project. That resolved the error.
Add following dependency to your pom.xml
<dependency>
<groupId>org.codehaus.groovy.maven.runtime</groupId>
<artifactId>gmaven-runtime-default</artifactId>
<version>1.0-rc-3</version>
<exclusions>
<exclusion>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
</exclusion>
</exclusions>
</dependency>
Kuldeep Singh

Why cobertura reports code coverage as zero for all but one module in multi-module maven project?

I am trying to generate code coverage report for our multi-module maven project using cobertura. After I run mvn clean and then run mvn package. Then, in one of the modules from where we run JUnit tests, the coverage report generated for that module is correct as expected. But the coverage is only for a few packages. Not all packages are covered. Remember it is a multi-module project with one parent POM and each child module having its own POM. Should I also include the cobertura maven plugin details in each of those child POMs ?
However, the individual module specific coverage report generated in the other /target/site/cobertura directories is reported as zero for both line coverage and branch coverage.
Am I missing something, in my parent POM ?, I have not made any changes to
any of the child POMs in the directories. Please let me know
how to generate the code coverage report for a multi module maven project
using cobertura.
Here is how my parent POM looks like.
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>cobertura-maven-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<formats>
<format>html</format>
<format>xml</format>
</formats>
</configuration>
<inherited>true</inherited>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>cobertura</goal>
</goals>
</execution>
</executions>
</plugin>
...
<dependencies>
<dependency>
<groupId>org.codehaus.mojo</groupId>
<artifactId>cobertura-maven-plugin</artifactId>
<version>2.5.1</version>
<type>plugin</type>
<scope>package</scope>
</dependency>
</dependencies>
Thanks!
According to the docs, there's a distinction between plugins that run as part of the build and plugins that run as part of reporting :
http://maven.apache.org/guides/mini/guide-configuring-plugins.html
your using 'executions' suggests that you have the plugin under 'build' whereas apparently it belongs under 'reporting' - as per the cobertura usage page :
http://mojo.codehaus.org/cobertura-maven-plugin/usage.html
Try removing cobertura plugin completely from 'build', and instead putting it under 'reporting' :
<project>
<!-- project stuff-->
<build>
<!-- build stuff -->
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>cobertura-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<formats>
<format>html</format>
</formats>
</configuration>
</plugin>
</plugins>
</reporting>
</project>
then run it either with
mvn cobertura:cobertura
or with
mvn site

How to make maven build platform independent?

When building using Maven on my mac, on mvn install i get
[WARNING] Using platform encoding (MacRoman actually) to copy filtered
resources, i.e. build is platform dependent!
Is it possible to either build for a given platform (Linux) or otherwise make build platform independent?
It happens when you have not provided following in your pom.xml
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
Absence of this means you are using platform specific encoding and that's why the warning.
And if #Kal's answer doesn't work for you, perhaps you can learn from my last 30 minutes... below link adds an additional line to the above answer and solved my problem. My problem was related to the maven-resources-plugin 2.6, but the provider of the following solution had a different problem it solved...
https://stackoverflow.com/a/3018152/2485075
For specific needs:
<!-- https://maven.apache.org/plugins/maven-resources-plugin/index.html -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
If the plugin is already configured one should merely add
<encoding>UTF-8</encoding>

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