Maven cannot download sencha gxt release. I have following in my pom.xml
<dependency>
<groupId>com.sencha.gxt</groupId>
<artifactId>gxt-release</artifactId>
<version>3.0.1</version>
</dependency>
Here is snippet from my settings.xml
<repository>
<id>thirdparty-uploads</id>
<name>JBoss Thirdparty Uploads</name>
<url>https://repository.jboss.org/nexus/content/repositories/thirdparty-uploads</url>
</repository>
<repository>
<id>maven central</id>
<name>maven central repo</name>
<url>http://repo1.maven.org/maven2</url>
</repository>
Here is the maven error output
Downloading: https://repository.jboss.org/nexus/content/repositories/thirdparty-uploads/com/sencha/gxt/gxt-release/3.0.1/gxt-release-3.0.1.jar
Downloading: http://repo1.maven.org/maven2/com/sencha/gxt/gxt-release/3.0.1/gxt-
release-3.0.1.jar
Downloading: http://repository.jboss.org/nexus/content/groups/public/com/sencha/
gxt/gxt-release/3.0.1/gxt-release-3.0.1.jar
Downloading: http://repo.maven.apache.org/maven2/com/sencha/gxt/gxt-release/3.0.
1/gxt-release-3.0.1.jar
[ INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] xxxx............................................... SUCCESS [0.147s]
[INFO] yyyyyy ........................................... FAILURE [5.065s]
Obviously the links for gxt-release-3.0.1.jar in maven trace above doesnt work.
I downloaded the zip for gxt-release and infact noticed that it doesnt have the file "gxt-release-3.0.1.jar"
Below is the snippet from pom.xml of gxt-release-3.0.1.jar from central repository
<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>
<parent>
<artifactId>gxt-parent</artifactId>
<groupId>com.sencha.gxt</groupId>
<version>3.0.1</version>
</parent>
<artifactId>gxt-release</artifactId>
**<packaging>pom</packaging>**
<name>Sencha GXT Release package</name>
<description>This project represents a full ExtGWT release, available for download by non-maven users. Maven users should make use of the artifacts in central, or the snapshots made available by the ExtGWT team.</description>
<dependencies>
<dependency>
My questions are:
1)when packaging type (as highlighted in pom.xml of gxt release above) is pom type, why is maven looking for jar file to download that doesnt exist
2)any clues on what might be causing my maven build/download to fail.
changed to war packaging and it worked
<packaging>war</packaging>
Related
I have two separate maven projects.
Project A contains utility classes and similar stuff. It also uses jetbrains annotations in some interfaces to mark parameters as Nullable and NotNullable.
<dependency>
<groupId>org.jetbrains</groupId>
<artifactId>annotations</artifactId>
<version>20.1.0</version>
</dependency>
Project B uses some of the Utilities of Project A. It includes it as a dependency from my repository.
<dependency>
<groupId>org.test.group</groupId>
<artifactId>Utilities</artifactId>
<version>1.0</version>
</dependency>
I can access the classes from my utilities dependency just fine. But i do not see any of the annotations on the parameters. I also can't access the jetbrains annotations in project B in any of my classes there. I'd have to add the jetbrains dependency in project B as well to do so.
Is there any way to inherit the dependencies of another dependency?
I looked at other questions and found this similar one. Tho his solution was to set the optional-parameter to false which i am not even using. Perhaps also something that needs to be configured in the maven build? Currently im running my build with goals clean package deploy without any special additional configuration.
I know gradle builds allow for implementation and api dependencies, where one of them forwards the dependency to other projects that include it and the other doesn't.
Edit: Here the full configuration of my projects
Local nexus running under localhost:8081 containing my artifacts. Local TeamCity running under localhost:8080 used for the builds and deployment to the repository.
Project A pom.xml
<?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>org.test.group</groupId>
<artifactId>Utilities</artifactId>
<version>1.0</version>
<name>Utilities</name>
<dependencies>
<dependency>
<groupId>org.jetbrains</groupId>
<artifactId>annotations</artifactId>
<version>20.1.0</version>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<distributionManagement>
<repository>
<id>local_nexus</id>
<name>Deployment</name>
<url>http://localhost:8081/repository/org.test.group/</url>
</repository>
</distributionManagement>
</project>
Project B pom.xml
<?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>org.test.group</groupId>
<artifactId>TestProject</artifactId>
<version>1.0</version>
<name>TestProject</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.test.group</groupId>
<artifactId>Utilities</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>local_nexus</id>
<name>Deployment</name>
<url>http://localhost:8081/repository/org.test.group/</url>
</repository>
</repositories>
<distributionManagement>
<repository>
<id>local_nexus</id>
<name>Deployment</name>
<url>http://localhost:8081/repository/org.test.group/</url>
</repository>
</distributionManagement>
</project>
Edit 2:
I've made some progress. Since i didn't change Project A's version after adding the annotations my local repository didn't fetch the new version. After a purge using mvn dependency:purge-local-repository the updated state of version 1.0 was available.
mvn dependency:tree prints now
[INFO] org.test.TestProject:jar:1.0
[INFO] \- org.test:Utilities:jar:1.0:compile
[INFO] \- org.jetbrains:annotations:jar:20.1.0:compile
Tho my IDE (Intellij) still doesn't recognize the annotation classes inside TestProject. Any idea why this is failing now?
You inherit annotations automatically, no configuration needed.
You don't inherit it, if it is of scope provided. Look at mvn dependency:tree to find out about the place and scope of the annotations library.
BTW: mvn clean package deploy is a waste of time, just use mvn clean deploy.
The issue was caused by my local maven repository. Since i didn't change the version of Project A's artifact (always 1.0) my local repository kept providing me with the old state of version 1.0.
Using mvn dependency:purge-local-repository i was able to cleanse the old 1.0 and load the new 1.0. Tho still my IDE refused to imports annotations dependency. At this point it was listed by mvn dependency:tree tho.
After tempering with the IDE for a while i decided to update my version to 1.1. Once Project A's 1.1 was built and Project B's dependency was updated to 1.1 it worked.
So basically it resulted from poor versioning of my projects, which interfered with my local maven repository.
I am currently learning software development and working on an assignment based on using a release from one project in another using jitpack.
The first project, which I want to add as a dependency in my second, simply has three classes and a JUnit test for each. I changed several things so I am at V5.0 release now.
https://github.com/MohamedMoustafaNUIG/assignment1/releases/tag/V5.0
My second project is not yet pushed, but this is the pom file:
<?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>com.nuig</groupId>
<artifactId>assignment1_driver</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>com.github.MohamedMoustafaNUIG</groupId>
<artifactId>assignment1</artifactId>
<version>v5.0</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>jitpack.io</id>
<url>https://jitpack.io</url>
</repository>
</repositories>
</project>
When I try to build with dependencies (in netbeans), I get this error:
Failed to execute goal on project assignment1_driver:
Could not resolve dependencies for project com.nuig:assignment1_driver:jar:1.0-SNAPSHOT:
Failure to find com.github.MohamedMoustafaNUIG:assignment1:jar:v5.0 in
https://jitpack.io was cached in the local repository,
resolution will not be reattempted until the update interval of jitpack.io has
elapsed or updates are forced -> [Help 1]
I also get this warning:
The POM for com.github.MohamedMoustafaNUIG:assignment1:jar:v5.0 is missing, no dependency information available
Even though the zip file (from linked release) has the pom file.
Any help appreciated as I have no idea how to resolve this the issue
You either need to:
build assignment1 on the same machine with clean install to make it available in the local repository.
deploy assignment1 to a Maven repository with clean deploy and then use this as a <repository>.
I am trying to run a project. Its not able to find a dependency. So I have added repository inside pom.xml
But its not able to lookup for the same.
from pom.xml
<repositories>
<repository>
<releases>
<enabled>true</enabled>
<updatePolicy>always</updatePolicy>
<checksumPolicy>fail</checksumPolicy>
</releases>
<snapshots>
<enabled>true</enabled>
<updatePolicy>always</updatePolicy>
<checksumPolicy>fail</checksumPolicy>
</snapshots>
<id>spring</id>
<name>Spring Framework Maven Release Repository</name>
<url>http://oss.sonatype.org/content/groups/public</url>
<layout>default</layout>
</repository>
</repositories>
81749 [WARNING] Unable to create Maven project for
com.gemstone.gemfire:gemfire:pom:8.1.0 from repository.
org.apache.maven.project.ProjectBuildingException: Error resolving
project artifact: Failure to find
com.gemstone.gemfire:gemfire:pom:8.1.0 in
https://repo.maven.apache.org/maven2 was cached in the local
repository, resolution will not be reattempted until the update
interval of central has elapsed or updates are forced for project
com.gemstone.gemfire:gemfire:pom:8.1.0
when i applied -X i see following
103850 [DEBUG] === PROJECT BUILD PLAN ================================================
103850 [DEBUG] Project: xxxxx:xxxxxx:0.0.1-SNAPSHOT
103850 [DEBUG] Dependencies (collect): [compile+runtime]
103850 [DEBUG] Dependencies (resolve): [compile, compile+runtime, runtime, test]
103850 [DEBUG] Repositories (dependencies): [central (https://repo.maven.apache.org/maven2, default, releases)]
103850 [DEBUG] Repositories (plugins) : [central (https://repo.maven.apache.org/maven2, default, releases)]
What am I missing here ? I have parent pom.xml with repository mention
parent is not included in child
Given this pom.xml:
<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>test</groupId>
<artifactId>test</artifactId>
<version>0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.gemstone.gemfire</groupId>
<artifactId>gemfire</artifactId>
<version>8.1.0</version>
</dependency>
</dependencies>
</project>
When I tried to run:
$mvn clean compile
The result was:
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
Downloading: https://repo.maven.apache.org/maven2/com/gemstone/gemfire/gemfire/8.1.0/gemfire-8.1.0.pom
[WARNING] The POM for com.gemstone.gemfire:gemfire:jar:8.1.0 is missing, no dependency information available
Downloading: https://repo.maven.apache.org/maven2/com/gemstone/gemfire/gemfire/8.1.0/gemfire-8.1.0.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.642 s
[INFO] Finished at: 2017-04-02T13:31:34+01:00
[INFO] Final Memory: 11M/131M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project test: Could not resolve dependencies for project test:test:jar:0.1-SNAPSHOT: Could not find artifact com.gemstone.gemfire:gemfire:jar:8.1.0 in central (https://repo.maven.apache.org/maven2) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
So I researched for the dependency and repository in mvnrepository.com and I found the repositories that contains this dependency are Spring Plugins and Spring Libs:
Then I just added the Spring Plugins repository in my pom and it worked!
The final POM is:
<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>test</groupId>
<artifactId>test</artifactId>
<version>0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.gemstone.gemfire</groupId>
<artifactId>gemfire</artifactId>
<version>8.1.0</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>spring</id>
<url>http://repo.spring.io/plugins-release</url>
</repository>
</repositories>
</project>
I am trying to develop a custom connector for mule by following http://www.mulesoft.org/documentation/display/current/Creating+a+Connector+Project tutorial.
As shown in the tutorial, I am creating the project through command line by executing
mvn archetype:generate
-DarchetypeGroupId=org.mule.tools.devkit
-DarchetypeArtifactId=mule-devkit-archetype-cloud-connector
-DarchetypeVersion=3.4.3
-DgroupId=org.hello
-DartifactId=hello-connector
-Dversion=1.0-SNAPSHOT
-DmuleConnectorName=Hello
-Dpackage=org.hello
-DarchetypeRepository=http://repository.mulesoft.org/releases
After importing the project to mule studio I am getting following error in my pom.xml file near the parent tag.
Project build error: Non-resolvable parent POM:
Could not transfer artifact
org.mule.tools.devkit:mule-devkit-parent:pom:3.4.3 from/to
mulesoft-releases (http://repository.mulesoft.org/releases/):
connection timed out to
http://repository.mulesoft.org/releases/org/mule/tools/devkit/mule-devkit-parent/3.4.3/mule-devkit-parent-3.4.3.pom
and 'parent.relativePath' points at wrong local POM.
Here is my pom.xml file.
<?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>org.hello</groupId>
<artifactId>hello-connector</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>mule-module</packaging>
<name>Hello Connector</name>
<parent>
<groupId>org.mule.tools.devkit</groupId>
<artifactId>mule-devkit-parent</artifactId>
<version>3.4.3</version>
</parent>
<properties>
<junit.version>4.9</junit.version>
<mockito.version>1.8.2</mockito.version>
<jdk.version>1.7</jdk.version>
<category>Community</category>
<licensePath>LICENSE.md</licensePath>
<devkit.studio.package.skip>false</devkit.studio.package.skip>
</properties>
<scm>
<connection>scm:git:git://github.com:mulesoft/hello-connector.git</connection>
<developerConnection>scm:git:git#github.com:mulesoft/hello-connector.git</developerConnection>
<url>http://github.com/mulesoft/hello-connector</url>
</scm>
<repositories>
<repository>
<id>mulesoft-releases</id>
<name>MuleSoft Releases Repository</name>
<url>http://repository.mulesoft.org/releases/</url>
<layout>default</layout>
</repository>
<repository>
<id>mulesoft-snapshots</id>
<name>MuleSoft Snapshots Repository</name>
<url>http://repository.mulesoft.org/snapshots/</url>
<layout>default</layout>
</repository>
</repositories>
</project>
I have changed the jdk version to 1.7. it was 1.6 in the auto generated pom.
ignore any error in the heading, some formatting issue.
I have tried various solutions mentioned on here but am not able to resolve the issue.
There is probably a firewall between your computer and the internet. You either have to configure Java to use this proxy.
Or you must download the parent POM manually and install it yourself into the local m2 repo. See this question how to do that: How to manually install an artifact in Maven 2?
Since you only need to install a POM, you need to trick mvn install:install-file:
mvn install:install-file -Dfile=<path-to-pomfile> -Dpackaging=pom -DpomFile=<path-to-pomfile>
This command will just install the POM itself.
I have a projects structure as follows:
ProjectParent
- pom.xml
ProjectApp
-pom.xml
ProjectAPI
-pom.xml
ProjectModels
-pom.xml
ProjectServices
-pom.xml
Etc..
ProjectModels/ProjectsServices are dependencies within ProjectAPI/ProjectApp.
Should I create separate jobs within Jenkins to build each module separately?
I created a job for ProjectAPP but get the following error below (Have set goals and actions to "clean install":
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building myproject-app 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
Downloading: http://maven.springframework.org/snapshot/com/myproject/myproject-common-config/0.0.1-SNAPSHOT/myproject-common-config-0.0.1-SNAPSHOT.pom
[WARNING] The POM for com.myproject:myproject-common-config:jar:0.0.1-SNAPSHOT is missing,
no dependency information available
Downloading: http://maven.springframework.org/snapshot/com/myproject/myproject-entities/0.0.1-SNAPSHOT/myproject-entities-0.0.1-SNAPSHOT.pom
[WARNING] The POM for com.myproject:myproject-entities:jar:0.0.1-SNAPSHOT is missing, no
dependency information available
Downloading: http://maven.springframework.org/snapshot/com/myproject/myproject-services/0.0.1-SNAPSHOT/myproject-services-0.0.1-SNAPSHOT.pom
[WARNING] The POM for com.myproject:myproject-services:jar:0.0.1-SNAPSHOT is missing, no
dependency information available
Downloading: http://maven.springframework.org/snapshot/com/myproject/myproject-persistence/0.0.1-SNAPSHOT/myproject-persistence-0.0.1-SNAPSHOT.pom
[WARNING] The POM for com.myproject:myproject-persistence:jar:0.0.1-SNAPSHOT is missing, no
dependency information available
Downloading: http://maven.springframework.org/snapshot/com/myproject/myproject-common-config/0.0.1-SNAPSHOT/myproject-common-config-0.0.1-SNAPSHOT.jar
......
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project myproject-app: Could not resolve dependencies
for project com.myproject:myproject-app:war:0.0.1-SNAPSHOT: The
following artifacts could not be resolved:
com.myproject:myproject-common-config:jar:0.0.1-SNAPSHOT,
com.myproject:myproject-entities:jar:0.0.1-SNAPSHOT,
com.myproject:myproject-services:jar:0.0.1-SNAPSHOT,
com.myproject:myproject-persistence:jar:0.0.1-SNAPSHOT: Could not find
artifact com.myproject:myproject-common-config:jar:0.0.1-SNAPSHOT in
org.springframework.maven.snapshot
(http://maven.springframework.org/snapshot)
ProjectParent Pom
<?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>com.myproject</groupId>
<artifactId>myproject-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<module>myproject-entities</module>
<module>myproject-services</module>
<module>myproject-persistence</module>
<module>myproject-app</module>
<module>myproject-merchant</module>
<module>myproject-common-config</module>
<module>myproject-api</module>
</modules>
<dependencyManagement>
<dependencies>
...
</dependencies>
</dependencyManagement>
<repositories>
...
</repositories>
<build>
...
</build>
<properties>
...
<myproject-entities-version>0.0.1-SNAPSHOT</myproject-entities-version>
<myproject-services-version>0.0.1-SNAPSHOT</myproject-services-version>
<myproject-persistence-version>0.0.1-SNAPSHOT</myproject-persistence-version>
</properties>
</project>
ProjectApp Pom
<?xml version="1.0"?>
<project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.myproject</groupId>
<artifactId>myproject-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>myproject-app</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>myproject-app</name>
<url>http://maven.apache.org</url>
<dependencies>
...
<dependency>
<groupId>com.myproject</groupId>
<artifactId>myproject-common-config</artifactId>
<version>${myproject-common-config}</version>
</dependency>
<dependency>
<groupId>com.myproject</groupId>
<artifactId>myproject-entities</artifactId>
<version>${myproject-entities-version}</version>
</dependency>
<dependency>
<groupId>com.myproject</groupId>
<artifactId>myproject-services</artifactId>
<version>${myproject-services-version}</version>
</dependency>
<dependency>
<groupId>com.myproject</groupId>
<artifactId>myproject-persistence</artifactId>
<version>${myproject-persistence-version}</version>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<myproject-common-config>0.0.1-SNAPSHOT</myproject-common-config>
<myproject-entities-version>0.0.1-SNAPSHOT</myproject-entities-version>
<myproject-services-version>0.0.1-SNAPSHOT</myproject-services-version>
<myproject-persistence-version>0.0.1-SNAPSHOT</myproject-persistence-version>
</properties>
</project>
Am I using the wrong goals? Do I need to chain a number of commands? i.e. build other modules first?
I'm using Maven 3.
NOTE: I changed the target to "clean install" against the ParentProject Pom and everything builds correctly.
Thanks
The problem is that you can't create a project solely for the ProjectApp module because it depends on the other modules below the ProjectApp parent. If you don't deploy those modules to your maven repository, maven is not able to find them in the repository nor in the build reactor.
Instead you should create the job for the parent. This will build the necessary modules.
You may also work with the option also-make-dependants when you have a job for ProjectApp, but I haven't any experience with this.
Had the same problem, and SpaceTrucker answer helped me.
Hence I just run something like:
.../ProjectParent$ mvn -am -pl ProjectApp test