Struggling to compile java code with annotation processor produced generated-sources/

[Infiniverse]

I've just started using groovy-eclipse-batch (with maven) for a project that also uses a java framework that makes use of an annotation processor to precompile some java classes.

Until now we've been using GMavenPlus. Switching to groovy-batch appears to work with a clean target directory, but when I run 'mvn compile' a second time it complains about classes in the generated-sources/ that were generated by an annotation processor, saying that they already exist.

Is there a simple fix for this?

The errors are of the form:

[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:compile (default-compile) on project truedb: Compilation failure: Compilation failure:
[ERROR] /Users/joe/Documents/code/target/generated-sources/annotations/com/truespeed/truedb/account/AccountResourceRouter.java:[28,-1]
[ERROR] 1. ERROR in /Users/joe/Documents/code/truedb-truedb/target/generated-sources/annotations/com/truespeed/truedb/account/AccountResourceRouter.java (at line 28)
[ERROR] public class AccountResourceRouter extends RestxRouter {
[ERROR] ^^^^^^^^^^^^^^^^^^^^^
[ERROR] The type AccountResourceRouter is already defined

The class AccountResourceRouter is created during compilation of my AccountResource by an annotation processor in my code base (but not my code).

How do I teach groovy-eclipse-batch not to trip up on these classes? Is there a way?

To be clear, if I run with an empty target/ directory, it works as expected; it's only the second time around that it trips up.

[eric-milles]

Would you mind sharing your pom.xml?

[Infiniverse]

Sure. Here it is.

<?xml version="1.0" encoding="UTF-8"?>mponents</groupId>
<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>truedb</groupId>
<artifactId>truedb</artifactId>/groupId>
<packaging>war</packaging>-api</artifactId>
<version>0.1-SNAPSHOT</version>ersion}</version>
<name>truedb</name>

<properties>ncy>
    <maven.compiler.plugin.version>3.6.1</maven.compiler.plugin.version>
    <maven.compiler.target>1.7</maven.compiler.target>
    <maven.compiler.source>1.7</maven.compiler.source>
    </dependency>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <groupId>com.gocardless</groupId>
    <truedb-api-version>2.80-SNAPSHOT</truedb-api-version>
        <version>1.16.0</version>
    <groovy.version>2.4.12</groovy.version>
    <groovy.eclipse.compiler.version>2.9.2-01</groovy.eclipse.compiler.version>
    <groovy.eclipse.batch.version>${groovy.version}-02</groovy.eclipse.batch.version>
        <groupId>fr.opensagres.xdocreport</groupId>
    <restx.version>0.34</restx.version>eport.converter.docx.xwpf</artifactId>
    <neo4j.version>2.3.8</neo4j.version>ort-version}</version>
    <spring.data.neo4j.version>3.4.0.M1</spring.data.neo4j.version>
    <neo4j.spatial.version>0.15-neo4j-intersectAll-2.3.4</neo4j.spatial.version>
    <com.dietsodasoftware.yail-version>0.9.6</com.dietsodasoftware.yail-version>
    <fr.opensagres.xdocreport-version>1.0.5</fr.opensagres.xdocreport-version>
    <commons-validator.version>1.6</commons-validator.version>tifactId>
</properties>ion>${fr.opensagres.xdocreport-version}</version>
    </dependency>
<repositories>
    <repository>
        <id>dss-maven-repo</id>xdocreport</groupId>
        <name>Diet Soda Software Repository for YAIL</name>arker</artifactId>
        <url>http://maven.dietsodasoftware.com/maven2</url>on>
    </repository>

    <repository>
        <id>neo4j-releases</id>ion</groupId>
        <url>http://m2.neo4j.org/content/repositories/releases</url>
    </repository>1.1</version>
    <repository>>
        <id>neo4j-contrib-releases</id>
        <url>https://raw.github.com/neo4j-contrib/m2/master/releases</url>
        <releases>d>neo4j-enterprise</artifactId>
            <enabled>true</enabled>version>
        </releases>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>neo4j-kernel</artifactId>
    </repository>${neo4j.version}</version>
    <repository>st-jar</type>
        <id>neo4j-contrib-snapshots</id>
        <url>https://raw.github.com/neo4j-contrib/m2/master/snapshots</url>
        <releases>
            <enabled>false</enabled>
        </releases>>neo4j-io</artifactId>
        <snapshots>neo4j.version}</version>
            <enabled>true</enabled>
        </snapshots>/scope>
    </repository>
    <repository>
        <id>spring-snapshots</id>Id>
        <name>Spring Snapshots</name>factId>
        <url>http://repo.spring.io/snapshot</url>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>>org.neo4j</groupId>-->
    </repository>factId>neo4j-cypher-dsl</artifactId>-->
    <repository>sion>2.3.1</version>-->
        <id>spring-milestones</id>
        <name>Spring Milestones</name>
        <url>http://repo.spring.io/milestone</url>
        <snapshots>problem: http://stackoverflow.com/questions/26980240/grails-neo4j-why-is-pom-included-as-dependency
            <enabled>false</enabled>vironment.TEST) {
        </snapshots>oup:"org.neo4j.app", name:"neo4j-server", version: "$neo4jVerison", classifier:"static-web"
    </repository>("org.neo4j.app:neo4j-server:$neo4jVerison")
</repositories>
    -->
<pluginRepositories>
    <pluginRepository>
        <id>bintray</id>4j</groupId>
        <name>Groovy Bintray</name>hdb</artifactId>
        <url>https://dl.bintray.com/groovy/maven</url>
        <releases>>
            <updatePolicy>never</updatePolicy>
        </releases>g.neo4j</groupId>
        <snapshots>>neo4j-spatial</artifactId>
            <enabled>false</enabled>sion}</version>
        </snapshots>
    </pluginRepository>
</pluginRepositories>
        <groupId>net.objectlab.kit</groupId>
<build> <artifactId>datecalc-joda</artifactId>
    <plugins>ion>1.4.0</version>
        <plugin>ons>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>${maven.compiler.plugin.version}</version>
            <configuration>
                <compilerId>groovy-eclipse-compiler</compilerId>
                <verbose>true</verbose>
                <source>${maven.compiler.target}</source>
                <target>${maven.compiler.source}</target>
            </configuration>ramework.data</groupId>
            <dependencies>-data-neo4j</artifactId>
                <dependency>ta.neo4j.version}</version>
                    <groupId>org.codehaus.groovy</groupId>
                    <artifactId>groovy-eclipse-compiler</artifactId>
                    <version>${groovy.eclipse.compiler.version}</version>
                </dependency>eo4j</artifactId>
                <dependency>
                    <groupId>org.codehaus.groovy</groupId>
                    <artifactId>groovy-eclipse-batch</artifactId>
                    <version>${groovy.eclipse.batch.version}</version>
                </dependency>tion</groupId>
            </dependencies>ion-api</artifactId>
        </plugin>1.1.0.Final</version>
        <plugin>>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.2</version>actId>
            <configuration>on>
                <failOnMissingWebXml>false</failOnMissingWebXml>
            </configuration>
        </plugin>org.jvnet.ogc</groupId>
        <!--<plugin>-->-tools-gml-jts</artifactId>
            <!--<groupId>org.mortbay.jetty</groupId>-->
            <!--<artifactId>jetty-maven-plugin</artifactId>-->
            <!--<version>8.1.16.v20140903</version>-->
        <!--</plugin>-->>commons-lang</groupId>
        <plugin><artifactId>commons-lang</artifactId>
            <!-- if including source jars, use the no-fork goals
                 otherwise both the Groovy sources and Java stub sources
                 will get included in your jar -->
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-source-plugin</artifactId>
            <version>2.4</version>tor</artifactId>
            <executions>ns-validator.version}</version>
                <execution>
                    <id>attach-sources</id>
                    <goals>
                        <goal>jar-no-fork</goal>
                        <goal>test-jar-no-fork</goal>
                    </goals>sion}</version>
                </execution>
            </executions>
        </plugin>groupId>org.javassist</groupId>
        <plugin><artifactId>javassist</artifactId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.6</version>
            <configuration>
                <useFile>false</useFile>
                <includes>/groupId>
                    <include>**/*Spec.java</include>>
                </includes>rsion}</version>
            </configuration>
        </plugin>
        <plugin>>io.restx</groupId>
            <groupId>org.apache.maven.plugins</groupId>tifactId>
            <artifactId>maven-javadoc-plugin</artifactId>
            <executions>
                <execution>
                    <id>attach-docs</id>
                    <!--x-factory</artifactId>
                        we generate javadoc before packaging the jar to let a chance to apidocs doclet
                        to generate comments dictionary to be packaged inside the jar as a resource
                        -->
                    <phase>prepare-package</phase>
                    <goals>actory-admin</artifactId>
                        <goal>jar</goal>on>
                    </goals>
                </execution>
            </executions></groupId>
            <configuration>alidation</artifactId>
                <source>${maven.compiler.source}</source>
                <doclet>restx.apidocs.doclet.ApidocsDoclet</doclet>
                <docletArtifact>
                    <groupId>io.restx</groupId>
                    <artifactId>restx-apidocs-doclet</artifactId>
                    <version>${restx.version}</version>
                </docletArtifact>
                <additionalparam>-restx-target-dir ${project.basedir}/target/classes</additionalparam>
            </configuration>roupId>
        </plugin>Id>restx-monitor-admin</artifactId>
    </plugins>on>${restx.version}</version>
</build>pendency>
    <dependency>
<dependencies>Id>io.restx</groupId>
    <!--TODO Work out why truedbapi restx cookies don't have quotes escaped with 4.4.1!-->
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.2.1</version>
    </dependency>

    <dependency>
        <groupId>com.truespeed</groupId>
        <artifactId>truedb-api</artifactId>
        <version>${truedb-api-version}</version>
    </dependency>

    <dependency>
        <groupId>com.sun.mail</groupId>
        <artifactId>javax.mail</artifactId>
        <version>1.5.4</version>
    </dependency>

    <dependency>
        <groupId>com.gocardless</groupId>
        <artifactId>gocardless-pro</artifactId>
        <version>1.16.0</version>
    </dependency>

    <dependency>
        <groupId>fr.opensagres.xdocreport</groupId>
        <artifactId>fr.opensagres.xdocreport.converter.docx.xwpf</artifactId>
        <version>${fr.opensagres.xdocreport-version}</version>
    </dependency>

    <dependency>
        <groupId>fr.opensagres.xdocreport</groupId>
        <artifactId>fr.opensagres.xdocreport.document.docx</artifactId>
        <version>${fr.opensagres.xdocreport-version}</version>
    </dependency>

    <dependency>
        <groupId>fr.opensagres.xdocreport</groupId>
        <artifactId>fr.opensagres.xdocreport.template.freemarker</artifactId>
        <version>${fr.opensagres.xdocreport-version}</version>
    </dependency>

    <dependency>
        <groupId>javax.transaction</groupId>
        <artifactId>jta</artifactId>
        <version>1.1</version>
    </dependency>
    <dependency>
        <groupId>org.neo4j</groupId>
        <artifactId>neo4j-enterprise</artifactId>
        <version>${neo4j.version}</version>
    </dependency>
    <dependency>
        <groupId>org.neo4j</groupId>
        <artifactId>neo4j-kernel</artifactId>
        <version>${neo4j.version}</version>
        <type>test-jar</type>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.neo4j</groupId>
        <artifactId>neo4j-io</artifactId>
        <version>${neo4j.version}</version>
        <type>test-jar</type>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.neo4j</groupId>
        <artifactId>neo4j-shell</artifactId>
        <version>${neo4j.version}</version>
    </dependency>
    <!--<dependency>-->
        <!--<groupId>org.neo4j</groupId>-->
        <!--<artifactId>neo4j-cypher-dsl</artifactId>-->
        <!--<version>2.3.1</version>-->
    <!--</dependency>-->

    <!--
    // Avoid a POM problem: http://stackoverflow.com/questions/26980240/grails-neo4j-why-is-pom-included-as-dependency
    // if (Environment.current != Environment.TEST) {
    //    compile group:"org.neo4j.app", name:"neo4j-server", version: "$neo4jVerison", classifier:"static-web"
    //    compile("org.neo4j.app:neo4j-server:$neo4jVerison")
    // }
    -->

    <!--dependency>
        <groupId>org.neo4j</groupId>
        <artifactId>neo4j-rest-graphdb</artifactId>
        <version>2.0.1</version>
    </dependency-->
    <dependency>
        <groupId>org.neo4j</groupId>
        <artifactId>neo4j-spatial</artifactId>
        <version>${neo4j.spatial.version}</version>
    </dependency>

    <dependency>
        <groupId>net.objectlab.kit</groupId>
        <artifactId>datecalc-joda</artifactId>
        <version>1.4.0</version>
        <exclusions>
            <exclusion>
                <groupId>joda-time</groupId>
                <artifactId>joda-time</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-neo4j</artifactId>
        <version>${spring.data.neo4j.version}</version>
        <exclusions>
            <exclusion>
                <groupId>org.neo4j</groupId>
                <artifactId>neo4j</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>1.1.0.Final</version>
    </dependency>
    <dependency>
        <groupId>net.sf.opencsv</groupId>
        <artifactId>opencsv</artifactId>
        <version>2.0</version>
    </dependency>
    <dependency>
        <groupId>org.jvnet.ogc</groupId>
        <artifactId>ogc-tools-gml-jts</artifactId>
        <version>1.0.3</version>
        <exclusions>
            <exclusion>
                <groupId>commons-lang</groupId>
                <artifactId>commons-lang</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>commons-validator</groupId>
        <artifactId>commons-validator</artifactId>
        <version>${commons-validator.version}</version>
    </dependency>

    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-core</artifactId>
        <version>${restx.version}</version>
        <exclusions>
            <exclusion>
                <groupId>org.javassist</groupId>
                <artifactId>javassist</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-security-basic</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-core-annotation-processor</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-factory</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-factory-admin</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-validation</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-monitor-codahale</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-monitor-admin</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-log-admin</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-i18n-admin</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <!--dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-stats-admin</artifactId>
        <version>${restx.version}</version>
    </dependency-->
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-server-jetty</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-apidocs</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-specs-admin</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-admin</artifactId>
        <version>${restx.version}</version>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.0.13</version>
    </dependency>
    <dependency>
        <groupId>com.googlecode.libphonenumber</groupId>
        <artifactId>libphonenumber</artifactId>
        <version>8.7.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-io</artifactId>
        <version>1.3.2</version>
    </dependency>
    <dependency>
        <groupId>io.restx</groupId>
        <artifactId>restx-specs-tests</artifactId>
        <version>${restx.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.spockframework</groupId>
        <artifactId>spock-core</artifactId>
        <version>1.0-groovy-2.4</version>
        <scope>test</scope>
    </dependency>
    <!-- Optional dependencies for using Spock -->
    <dependency> <!-- use a specific Groovy version rather than the one specified by spock-core -->
        <groupId>org.codehaus.groovy</groupId>
        <artifactId>groovy-all</artifactId>
        <version>${groovy.version}</version>
    </dependency>
    <dependency> <!-- enables mocking of classes (in addition to interfaces) -->
        <groupId>cglib</groupId>
        <artifactId>cglib-nodep</artifactId>
        <version>3.1</version>
        <scope>test</scope>
    </dependency>
    <dependency> <!-- enables mocking of classes without default constructor (together with CGLIB) -->
        <groupId>org.objenesis</groupId>
        <artifactId>objenesis</artifactId>
        <version>2.1</version>
        <scope>test</scope>
    </dependency>
    <dependency> <!-- only required if Hamcrest matchers are used -->
        <groupId>org.hamcrest</groupId>
        <artifactId>hamcrest-core</artifactId>
        <version>1.3</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>xmlunit</groupId>
        <artifactId>xmlunit</artifactId>
        <version>1.5</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.powermock</groupId>
        <artifactId>powermock-api-easymock</artifactId>
        <version>1.6.3</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.powermock</groupId>
        <artifactId>powermock-module-junit4</artifactId>
        <version>1.6.4</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.easymock</groupId>
        <artifactId>easymock</artifactId>
        <version>3.4</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.jvnet.mock-javamail</groupId>
        <artifactId>mock-javamail</artifactId>
        <version>1.9</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.reflections</groupId>
        <artifactId>reflections</artifactId>
        <version>0.9.10</version>
    </dependency>

    <dependency>
        <groupId>org.codehaus.groovy.modules.http-builder</groupId>
        <artifactId>http-builder</artifactId>
        <version>0.7.1</version>
    </dependency>
    <dependency>
        <groupId>com.dietsodasoftware</groupId>
        <artifactId>yail-XmlRpcJavaClient</artifactId>
        <version>${com.dietsodasoftware.yail-version}</version>
        <exclusions>
            <exclusion>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-core</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.ccil.cowan.tagsoup</groupId>
        <artifactId>tagsoup</artifactId>
        <version>1.2</version>
    </dependency>
</dependencies>
</project>

[eric-milles]

Thanks. It looks like it got munged somewhat. Could you make a minimal maven project that has the annotation processor and causes the issue? You can attach as a zip file in the comment.

[eric-milles]

I believe I was able to recreate this issue for myself. I may have a workaround for you. I added the compiler option <useIncrementalCompilation>false</useIncrementalCompilation> and the error is not seen. Your builds may perform full compilation each time; I'm not sure of the full implications of using this option. But it at least let my build run successfully.

  <build>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.6.1</version>
        <configuration>
          <compilerId>groovy-eclipse-compiler</compilerId>
          <useIncrementalCompilation>false</useIncrementalCompilation>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy-eclipse-compiler</artifactId>
            <version>2.9.2-01</version>
          </dependency>
          <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy-eclipse-batch</artifactId>
            <version>2.4.12-02</version>
          </dependency>
        </dependencies>
      </plugin>

[Infiniverse]

Thank you! - that makes a bit more progress. I still get a similar failure running ‘mvn test’, but the ‘mvn compile’ at least appears to run several times without error. We’re also running with the batch compiler inside of IntelliJ, and the tests appear to run there without compilation error - so I’m hopeful of some progress now :). Or, at least a faster development cycle as this compiler should be way faster, even if it’s compiling everything each time. I’m guessing that we get a lot of benefit from using incremental compilation, especially in a test driven programming environment, so it would still be good to work out to get this resolved generically. (For example, we make need to explicitly exclude certain file paths from the incremental compiler’s perspective, seeing as the annotation processor is managing those generated sources). Joe

[eric-milles]

Just curious, are you using Maven integration (m2eclipse)? You build test cycle should be able to run without any maven command-line interaction. This should spped up your edit-test cycle.

[Infiniverse]

On 8 Sep 2017, at 16:12, Eric Milles ***@***.***> wrote: Just curious, are you using Maven integration (m2eclipse)? You build test cycle should be able to run without any maven command-line interaction. This should spped up your edit-test cycle.

We’re currently using IntelliJ - it’s groovy support is ok, but it uses separate compilers and can take quite a while to run a test against a small code change. We’re trying to switch over to the batch compiler to improve things. We’ve succeeded with most of our projects, but this one that uses annotation processing in one of the external frameworks (RESTX) is blocking the switch over. Intellij’s groovy-eclipse-batch support appears to work quite well.. and also switching away from GMavenPlus to the batch compiler in our pom’s has fixed a number of issues that we had… so hopefully we can fix it with this project too :). Cheers, Joe

[eric-milles]

Okay, thanks for the extra info. Also, which version of the batch compiler are you using?

[Infiniverse]

On 8 Sep 2017, at 17:20, Eric Milles ***@***.***> wrote: Okay, thanks for the extra info. Also, which version of the batch compiler are you using?

The latest, 2.4.12-02. Joe

[eric-milles]

Can you try installing this to your local maven repository (as org.codehaus.groovy:groovy-eclipse-compiler) and then change your groovy-eclipse-compiler dependency to 2.9.2-SNAPSHOT? I think the stale file scanning should exclude the generated sources directory. But I want to be sure before publishing this to bintray.

2.9.2-SNAPSHOT.zip

[Infiniverse]

On 8 Sep 2017, at 18:39, Eric Milles ***@***.***> wrote: Can you try installing this to your local maven repository (as org.codehaus.groovy:groovy-eclipse-compiler) and then change your groovy-eclipse-compiler dependency to 2.9.2-SNAPSHOT? I think the stale file scanning should exclude the generated sources directory. But I want to be sure before publishing this to bintray. 2.9.2-SNAPSHOT.zip <https://github.com/groovy/groovy-eclipse/files/1288672/2.9.2-SNAPSHOT.zip>

At first test, this appears to do the trick. It compiles multiple times now without error. Thanks! Joe

[Infiniverse]

I've done a bit more testing, and it is definitely better.

But, I'm not sure how it is supposed to interact with the compiler flag.

With:

<useIncrementalCompilation>false</false>

it does much less work on subsequent compilations (2 seconds, vs 8 seconds initially).

With it set to true it appears to compile the entire code base each time.

I would have thought that it would have behaved the other way around.

[eric-milles]

useIncrementalCompilation false behavior would be a separate issue. Did your errors for compiling with an annotation processor that generates sources subside?

[irobertson]

Has there been a release of groovy-eclipse-compiler which contains this fix? If not, is there an ETA for one? We're currently using a copy of your snapshot for production builds, which makes me nervous...

[eric-milles]

Latest is available for download from bintray: