Maven circular dependency?

continuous-integration, maven-2

Solution

It will only create a cyclic dependency if `mywebapp` is dependent on `functest` (or transitively dependent on it). From the name I would guess that `functest` is a test component so no such dependency would exist.

As you've seen, it is valid to substitute properties into dependency declarations, Maven will fail the build if it does result in a cycle.

I guess your confusion around "Isn't the war file created at the end of the build." is because you expect the build to fail as `functest` is built before `mywebapp`? Remember that Maven has access to local and remote repositories, so the result of any previous build of `mywebapp` will be available in the repository. If this is the case, try deleting `mywebapp` from you local/remote repositories and I suspect you will see the build fail due to an unresolved dependency.

Problem

If I add this to a POM will it create a circular dependency? I've tried it and that what seems to happen. There is something I'm not understanding here. Isn't the war file created at the end of the build. ``` <dependency> <groupId>${project.groupId}</groupId> <artifactId>mywebapp</artifactId> <version>${project.version}</version> <type>war</type> <scope>provided</scope> </dependency> ``` My directory structure is root/functest, root/mywebapp. Effective POM ``` [INFO] Scanning for projects... [INFO] Searching repository for plugin with prefix: 'help'. [INFO] org.grails: checking for updates from tapestry.javaforge [WARNING] *** CHECKSUM FAILED - Checksum failed on download: local = 'ee0f52bc37051384f078f9706be9445b550ee4a6'; remote = 'a535436f42caf1ba0f9372328d2920372f30c842' - RETRYING [WARNING] *** CHECKSUM FAILED - Checksum failed on download: local = 'ee0f52bc37051384f078f9706be9445b550ee4a6'; remote = 'a535436f42caf1ba0f9372328d2920372f30c842' - IGNORING [INFO] org.apache.maven.plugins: checking for updates from tapestry.javaforge [INFO] org.codehaus.mojo: checking for updates from tapestry.javaforge [INFO] artifact org.apache.maven.plugins:maven-help-plugin: checking for updates from tapestry.javaforge [INFO] ------------------------------------------------------------------------ [INFO] Building functional-tests [INFO] task-segment: [help:effective-pom] (aggregator-style) [INFO] ------------------------------------------------------------------------ [INFO] [help:effective-pom] [INFO] Effective POMs, after inheritance, interpolation, and profiles are applied: <?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> <parent> <artifactId>myapp</artifactId> <groupId>com.mycompany</groupId> <version>1.0-SNAPSHOT</version> </parent> <groupId>com.mycompany</groupId> <artifactId>functest</artifactId> <version>1.0-SNAPSHOT</version> <packaging>pom</packaging> <name>functional-tests</name> <url>http://www.mycompany.com/functest</url> <organization> <name>My Company Inc</name> <url>http://www.mycompany.com</url> </organization> <developers> <developer> <id>john.doe</id> <name>John Doe</name> <email>john.doe@mycompany.com</email> </developer> </developers> <build> <sourceDirectory>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\src\main\java</sourceDirectory> <scriptSourceDirectory>src/main/scripts</scriptSourceDirectory> <testSourceDirectory>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\src\it</testSourceDirectory> <outputDirectory>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\target\classes</outputDirectory> <testOutputDirectory>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\target\test-classes</testOutputDirectory> <resources> <resource> <mergeId>resource-0</mergeId> <directory>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\src\main\resources</directory> </resource> </resources> <testResources> <testResource> <mergeId>resource-1</mergeId> <directory>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\src\test\resources</directory> </testResource> </testResources> <directory>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\target</directory> <finalName>functest-1.0-SNAPSHOT</finalName> <pluginManagement> <plugins> <plugin> <artifactId>maven-antrun-plugin</artifactId> <version>1.3</version> </plugin> <plugin> <artifactId>maven-assembly-plugin</artifactId> <version>2.2-beta-2</version> </plugin> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>2.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>2.0.2</version> </plugin> <plugin> <artifactId>maven-dependency-plugin</artifactId> <version>2.0</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.4</version> </plugin> <plugin> <artifactId>maven-ear-plugin</artifactId> <version>2.3.1</version> </plugin> <plugin> <artifactId>maven-ejb-plugin</artifactId> <version>2.1</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.2</version> </plugin> <plugin> <artifactId>maven-jar-plugin</artifactId> <version>2.2</version> </plugin> <plugin> <artifactId>maven-javadoc-plugin</artifactId> <version>2.5</version> </plugin> <plugin> <artifactId>maven-plugin-plugin</artifactId> <version>2.4.3</version> </plugin> <plugin> <artifactId>maven-rar-plugin</artifactId> <version>2.2</version> </plugin> <plugin> <artifactId>maven-release-plugin</artifactId> <version>2.0-beta-8</version> </plugin> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>2.3</version> </plugin> <plugin> <artifactId>maven-site-plugin</artifactId> <version>2.0-beta-7</version> </plugin> <plugin> <artifactId>maven-source-plugin</artifactId> <version>2.0.4</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.4.3</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>2.1-alpha-2</version> </plugin> </plugins> </pluginManagement> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>2.0.2</version> <executions> <execution> <goals> <goal>testCompile</goal> </goals> </execution> </executions> <configuration> <source>1.5</source> <target>1.5</target> </configuration> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.4.3</version> <executions> <execution> <phase>integration-test</phase> <goals> <goal>test</goal> </goals> </execution> </executions> <configuration> <suiteXmlFiles> <suiteXmlFile>src/it/testng.xml</suiteXmlFile> </suiteXmlFiles> <parallel>true</parallel> <threadCount>10</threadCount> </configuration> </plugin> <plugin> <groupId>org.codehaus.cargo</groupId> <artifactId>cargo-maven2-plugin</artifactId> <version>1.0.1-alpha-1</version> <executions> <execution> <id>start-container</id> <phase>pre-integration-test</phase> <goals> <goal>start</goal> <goal>deploy</goal> </goals> <configuration> <deployer> <deployables> <deployable> <groupId>com.mycompany</groupId> <artifactId>mywebapp</artifactId> <type>war</type> <pingURL>http://localhost:8080/mywebapp/index.html</pingURL> <pingTimeout>300000</pingTimeout> <properties> <context>mywebapp</context> </properties> </deployable> </deployables> </deployer> </configuration> </execution> <execution> <id>stop-container</id> <phase>post-integration-test</phase> <goals> <goal>stop</goal> </goals> </execution> </executions> <configuration> <wait>false</wait> <container> <containerId>tomcat5x</containerId> <zipUrlInstaller> <url>http://www.apache.org/dist/tomcat/tomcat-5/v5.5.28/bin/apache-tomcat-5.5.28.zip</url> <installDir>${installDir}</installDir> </zipUrlInstaller> <output>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\target/tomcat5x.log</output> <log>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\target/cargo.log</log> </container> <configuration> <home>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\target/tomcat5x/container</home> <properties> <cargo.logging>high</cargo.logging> <cargo.servlet.port>8080</cargo.servlet.port> </properties> </configuration> </configuration> </plugin> <plugin> <artifactId>maven-help-plugin</artifactId> <version>2.1</version> </plugin> </plugins> </build> <repositories> <repository> <releases> <enabled>false</enabled> </releases> <snapshots /> <id>public-snapshots</id> <url>http://public-snapshots</url> </repository> <repository> <releases /> <snapshots /> <id>openqa-releases</id> <url>http://nexus.openqa.org/content/repositories/releases</url> </repository> <repository> <id>openqa</id> <url>http://maven.openqa.org</url> </repository> <repository> <snapshots> <enabled>false</enabled> </snapshots> <id>central</id> <name>Maven Repository Switchboard</name> <url>http://repo1.maven.org/maven2</url> </repository> </repositories> <pluginRepositories> <pluginRepository> <releases> <enabled>false</enabled> </releases> <snapshots /> <id>public-snapshots</id> <url>http://public-snapshots</url> </pluginRepository> <pluginRepository> <releases /> <snapshots /> <id>openqa-plugin</id> <url>http://nexus.openqa.org/content/repositories/releases</url> </pluginRepository> <pluginRepository> <releases /> <snapshots /> <id>another-plugin</id> <url>http://repo1.maven.org/maven2</url> </pluginRepository> <pluginRepository> <releases /> <id>codehaus.snapshots</id> <url>http://snapshots.repository.codehaus.org/</url> </pluginRepository> <pluginRepository> <id>mortbay.repo</id> <url>http://www.mortbay.org/maven2/snapshot</url> </pluginRepository> <pluginRepository> <id>tapestry.javaforge</id> <url>http://howardlewisship.com/repository</url> </pluginRepository> <pluginRepository> <releases> <updatePolicy>never</updatePolicy> </releases> <snapshots> <enabled>false</enabled> </snapshots> <id>central</id> <name>Maven Plugin Repository</name> <url>http://repo1.maven.org/maven2</url> </pluginRepository> </pluginRepositories> <dependencies> <dependency> <groupId>com.mycompany</groupId> <artifactId>mywebapp</artifactId> <version>1.0-SNAPSHOT</version> <type>war</type> <scope>provided</scope> </dependency> <dependency> <groupId>org.seleniumhq.selenium.server</groupId> <artifactId>selenium-server</artifactId> <version>1.0.1</version> </dependency> <dependency> <groupId>org.seleniumhq.selenium.client-drivers</groupId> <artifactId>selenium-java-client-driver</artifactId> <version>1.0.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.testng</groupId> <artifactId>testng</artifactId> <version>5.1</version> <classifier>jdk15</classifier> <scope>test</scope> </dependency> </dependencies> <reporting> <outputDirectory>C:\Documents and Settings\ric\AutoSmokeTest\steps\step7\functest\target/site</outputDirectory> </reporting> </project> [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESSFUL [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3 seconds [INFO] Finished at: Wed Sep 30 10:41:00 CEST 2009 [INFO] Final Memory: 7M/13M [INFO] ------------------------------------------------------------------------ ```

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