Could not resolve dependencies, Failure to find jar - eclipse

Question

I'm trying to run vaadin-charts-demo.
Similar issue to this:
Maven Could not resolve dependencies, artifacts could not be resolved
[INFO] <<< vaadin-maven-plugin:7.4.6:compile (default-cli) < process-resources # vaadin-charts-demo <<<
[WARNING] The POM for com.vaadin.demo:vaadin-charts-examples:jar:3.0-SNAPSHOT is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.414 s
[INFO] Finished at: 2015-07-09T20:57:33-05:00
[INFO] Final Memory: 12M/225M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project vaadin-charts-demo: Could not resolve dependencies for project com.vaadin.demo:vaadin-charts-demo:war:3.0-SNAPSHOT: Failure to find com.vaadin.demo:vaadin-charts-examples:jar:3.0-SNAPSHOT in https://maven.vaadin.com/vaadin-addons was cached in the local repository, resolution will not be reattempted until the update interval of vaadin-addons has elapsed or updates are forced -> [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
pom.xml content:
<?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/maven-v4_0_0.xsd">
<parent>
<groupId>com.vaadin.addon</groupId>
<artifactId>vaadin-charts-parent</artifactId>
<version>3.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.vaadin.demo</groupId>
<artifactId>vaadin-charts-demo</artifactId>
<packaging>war</packaging>
<name>Vaadin Charts Demo</name>
<dependencies>
<dependency>
<groupId>com.vaadin.addon</groupId>
<artifactId>vaadin-charts</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.vaadin.demo</groupId>
<artifactId>vaadin-charts-examples</artifactId>
<version>${project.version}</version>
</dependency>
<!-- Vaadin -->
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-server</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-themes</artifactId>
</dependency>
<dependency>
<groupId>org.reflections</groupId>
<artifactId>reflections</artifactId>
<version>0.9.8</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-webapp</artifactId>
<version>8.1.13.v20130916</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.vaadin.addons</groupId>
<artifactId>googleanalyticstracker</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-maven-plugin</artifactId>
<version>7.6.0.alpha2</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>**/config.properties</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<filtering>false</filtering>
<excludes>
<exclude>**/config.properties</exclude>
</excludes>
</resource>
</resources>
<plugins>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.4</version>
<configuration>
<packagingExcludes>**/gwt-unitCache/*,**/widgetsets/WEB-INF/**/*</packagingExcludes>
</configuration>
</plugin>
<!-- As we are doing "inplace" GWT compilation, ensure the widgetset -->
<!-- directory is cleaned properly -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<filesets>
<fileset>
<directory>src/main/webapp/VAADIN/widgetsets</directory>
</fileset>
</filesets>
</configuration>
</plugin>
<plugin>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-maven-plugin</artifactId>
<configuration>
<extraJvmArgs>-Xmx512M -Xss1024k</extraJvmArgs>
<!-- We are doing "inplace" but into subdir VAADIN/widgetsets.
This way compatible with Vaadin eclipse plugin. -->
<webappDirectory>${basedir}/src/main/webapp/VAADIN/widgetsets
</webappDirectory>
<hostedWebapp>${basedir}/target/ignore/VAADIN/widgetsets
</hostedWebapp>
<noServer>true</noServer>
<!-- Remove draftCompile when project is ready -->
<draftCompile>false</draftCompile>
<compileReport>true</compileReport>
<!-- <style>PRETTY</style> -->
<strict>true</strict>
<runTarget>http://localhost:8080/</runTarget>
</configuration>
<executions>
<execution>
<goals>
<goal>resources</goal>
<goal>update-widgetset</goal>
</goals>
</execution>
<execution>
<id>compile-widgetset-on-compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
Tried googling vaadin-chart-examples and chart-demos maven, repository, etc., but haven't found a solution. How can this be resolved?
[[edit]]
The project is imported from here:
https://github.com/vaadin/charts/tree/7a55e8dab5b9941a05603c2624a576866e86045d
Following these instructions:
https://github.com/vaadin/charts/blob/7a55e8dab5b9941a05603c2624a576866e86045d/DevInstructions.md
After install, couldn't compile widgets
The instructions are for Luna, I'm using Mars, not sure how that affects things.

Answer 1

Did you try adding this repository for Vaadin add-ons:
<repository>
<id>vaadin-addons</id>
<url>http://maven.vaadin.com/vaadin-addons</url>
</repository>

Answer 2

If you built just vaadin-charts-demo so far build vaadin-charts-parent before, as well.
The parent includes vaadin-charts-examples as <module>. So, if you don't build parent (or examples explicitely) at least once, none of the modules' artifacts is available in your Eclipse workspace and your local Maven repo to be resolved from there.
Remember, Aggregation and Inheritance are different types of POM Relationships.
For resolving dependencies from your Eclipse workspace see <Your Eclipse Maven project> → Properties → Maven → [✔] Resolve dependencies from Workspace projects.