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Merge pull request #15 from davidmoten/maven-plugin
Retrolambda Maven plugin
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‎.gitignore

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/target/
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/*/target/
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.classpath
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.settings
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.project

‎README.md

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Output directory into where the generated class files are written.
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Defaults to same as retrolambda.inputDir
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```
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### Maven plugin
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To run Retrolambda using Maven add the following to your pom.xml:
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```xml
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<build>
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<plugins>
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...
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<plugin>
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<groupId>net.orfjackal.retrolambda</groupId>
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<artifactId>retrolambda-maven-plugin</artifactId>
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<version>0.1.15-SNAPSHOT</version>
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<executions>
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<execution>
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<goals>
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<goal>process-main</goal>
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<goal>process-test</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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...
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```
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See [end-to-end-tests/pom.xml](https://github.com/orfjackal/retrolambda/blob/master/end-to-end-tests/pom.xml) for an example.
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Plugin documentation is [here](). (TODO decide where to put the site report)
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### Tips
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For an example of how to run Retrolambda using Maven, see how
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maven-dependency-plugin and maven-antrun-plugin are used in
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[end-to-end-tests/pom.xml](https://github.com/orfjackal/retrolambda/blob/master/end-to-end-tests/pom.xml)
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There isn't yet a Maven plugin for doing that with less boilerplate, but maybe
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later.
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During development, inside an IDE, it's the easiest to use Java 8, without
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Retrolamba, to compile and run tests. But in your continuous integration build
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you should run tests using the target Java version. For example, you can

‎end-to-end-tests/pom.xml

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</plugin>
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<!-- Process our byte codes to make them run on Java 7 -->
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<plugin>
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<groupId>net.orfjackal.retrolambda</groupId>
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<artifactId>retrolambda-maven-plugin</artifactId>
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<version>${project.parent.version}</version>
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<executions>
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<execution>
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<goals>
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<goal>process-main</goal>
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<goal>process-test</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<!-- alternatively, can use a call to the dependency plugin and antrun plugins for fine control of retrolambda parameters -->
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<!-- although optimally all such use should be through the maven plugin above. Request changes if you need them! -->
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<!-- if people are happy we could delete this block now -->
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<!--
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<plugin>
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<artifactId>maven-dependency-plugin</artifactId>
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<executions>
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</execution>
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</executions>
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</plugin>
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-->
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</plugins>
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</build>
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‎parent/pom.xml

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<plugin>
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<artifactId>maven-plugin-plugin</artifactId>
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<version>3.1</version>
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<version>3.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-site-plugin</artifactId>
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<version>3.1</version>
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<version>3.3</version>
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</plugin>
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<plugin>

‎pom.xml

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<modules>
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<module>parent</module>
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<module>retrolambda</module>
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<module>retrolambda-maven-plugin</module>
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<module>end-to-end-tests</module>
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</modules>
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‎retrolambda-maven-plugin/pom.xml

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>net.orfjackal.retrolambda</groupId>
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<artifactId>parent</artifactId>
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<version>1.1.5-SNAPSHOT</version>
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<relativePath>../parent/pom.xml</relativePath>
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</parent>
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<artifactId>retrolambda-maven-plugin</artifactId>
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<packaging>maven-plugin</packaging>
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<name>${project.artifactId}</name>
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<url>https://github.com/orfjackal/retrolambda</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<prerequisites>
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<maven>${minimumMavenVersion}</maven>
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</prerequisites>
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<dependencies>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-plugin-api</artifactId>
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<version>2.0</version>
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</dependency>
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<dependency>
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<groupId>org.apache.maven.plugin-tools</groupId>
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<artifactId>maven-plugin-annotations</artifactId>
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<version>3.2</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.codehaus.plexus</groupId>
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<artifactId>plexus-utils</artifactId>
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<version>3.0.8</version>
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</dependency>
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<dependency>
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<groupId>org.twdata.maven</groupId>
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<artifactId>mojo-executor</artifactId>
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<version>2.2.0</version>
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</dependency>
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</dependencies>
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<build>
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<resources>
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<resource>
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<directory>src/main/resources</directory>
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<filtering>true</filtering>
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</resource>
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</resources>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<verbose>true</verbose>
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<fork>true</fork>
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<source>1.6</source>
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<target>1.6</target>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-plugin-plugin</artifactId>
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<configuration>
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<goalPrefix>retrolambda</goalPrefix>
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<skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
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</configuration>
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<executions>
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<execution>
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<id>mojo-descriptor</id>
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<goals>
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<goal>descriptor</goal>
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</goals>
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<phase>process-classes</phase>
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</execution>
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<execution>
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<id>help-goal</id>
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<goals>
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<goal>helpmojo</goal>
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</goals>
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<phase>process-classes</phase>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-site-plugin</artifactId>
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<executions>
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<execution>
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<id>attach-descriptor</id>
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<goals>
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<goal>attach-descriptor</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<reportPlugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-plugin-plugin</artifactId>
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<version>3.2</version>
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</plugin>
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</reportPlugins>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<profiles>
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<profile>
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<id>run-its</id>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-invoker-plugin</artifactId>
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<version>1.7</version>
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<configuration>
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<debug>true</debug>
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<cloneProjectsTo>${project.build.directory}/it</cloneProjectsTo>
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<pomIncludes>
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<pomInclude>*/pom.xml</pomInclude>
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</pomIncludes>
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<postBuildHookScript>verify</postBuildHookScript>
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<localRepositoryPath>${project.build.directory}/local-repo</localRepositoryPath>
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<settingsFile>src/it/settings.xml</settingsFile>
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<goals>
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<goal>clean</goal>
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<goal>test-compile</goal>
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</goals>
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</configuration>
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<executions>
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<execution>
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<id>integration-test</id>
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<goals>
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<goal>install</goal>
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<goal>integration-test</goal>
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<goal>verify</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</profile>
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</profiles>
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</project>

‎retrolambda-maven-plugin/src/it/settings.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<settings>
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<profiles>
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<profile>
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<id>it-repo</id>
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<activation>
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<activeByDefault>true</activeByDefault>
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</activation>
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<repositories>
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<repository>
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<id>local.central</id>
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<url>@localRepositoryUrl@</url>
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<releases>
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<enabled>true</enabled>
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</releases>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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</repository>
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</repositories>
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<pluginRepositories>
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<pluginRepository>
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<id>local.central</id>
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<url>@localRepositoryUrl@</url>
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<releases>
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<enabled>true</enabled>
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</releases>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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</pluginRepository>
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</pluginRepositories>
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</profile>
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</profiles>
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</settings>

‎retrolambda-maven-plugin/src/it/simple-it/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>net.orfjackal.retrolambda.it</groupId>
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<artifactId>simple-it</artifactId>
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<version>1.0-SNAPSHOT</version>
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<description>A simple IT verifying the basic use case.</description>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<build>
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<plugins>
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<plugin>
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<groupId>@project.groupId@</groupId>
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<artifactId>@project.artifactId@</artifactId>
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<version>@project.version@</version>
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<executions>
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<execution>
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<id>touch</id>
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<phase>validate</phase>
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<goals>
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<goal>touch</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

‎retrolambda-maven-plugin/src/it/simple-it/verify.groovy

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File touchFile = new File( basedir, "target/touch.txt" );
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assert touchFile.isFile()

‎retrolambda-maven-plugin/src/main/java/net/orfjackal/retrolambda/maven/ClassesType.java

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package net.orfjackal.retrolambda.maven;
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enum ClassesType {
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MAIN, TEST;
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}

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