title: Maven Spring Boot compilation failure
body: <p>One of my Java Spring Boot projects stopped compiling the assets. Can anyone give me an idea as to why? I mention that I haven't changed anything, it simply stopped working from one day to another for some reason.</p>
  
  <pre><code>[ERROR] symbol:   class QRegulation
  [ERROR] location: package ro.gss.database.entity
  [ERROR] -&gt; [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/MojoFailureException
  
  Process finished with exit code 1
  </code></pre>
  
  <p>My pom.xml file looks like this: (the dependencies are not all here due to the code to text ratio that stackoverflow requires)</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;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"&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  
      &lt;groupId&gt;ro.gss&lt;/groupId&gt;
      &lt;artifactId&gt;database&lt;/artifactId&gt;
      &lt;version&gt;1.x.y-SIMSI-VERSION&lt;/version&gt;
      &lt;packaging&gt;jar&lt;/packaging&gt;
  
      &lt;name&gt;database&lt;/name&gt;
      &lt;description&gt;Database micro-service&lt;/description&gt;
  
      &lt;parent&gt;
          &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
          &lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
          &lt;version&gt;1.5.12.RELEASE&lt;/version&gt;
          &lt;relativePath /&gt; &lt;!-- lookup parent from repository --&gt;
      &lt;/parent&gt;
  
      &lt;properties&gt;
          &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
          &lt;project.reporting.outputEncoding&gt;UTF-8&lt;/project.reporting.outputEncoding&gt;
          &lt;java.version&gt;1.8&lt;/java.version&gt;
          &lt;querydsl.version&gt;3.7.0&lt;/querydsl.version&gt;
          &lt;swagger.version&gt;2.9.2&lt;/swagger.version&gt;
          &lt;poi.version&gt;4.0.0&lt;/poi.version&gt;
      &lt;/properties&gt;
  
      &lt;dependencies&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;com.opencsv&lt;/groupId&gt;
              &lt;artifactId&gt;opencsv&lt;/artifactId&gt;
              &lt;version&gt;4.1&lt;/version&gt;
          &lt;/dependency&gt;
  
          &lt;dependency&gt;
              &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
              &lt;artifactId&gt;spring-boot-starter-web&lt;/artifactId&gt;
          &lt;/dependency&gt;
  
          &lt;dependency&gt;
              &lt;groupId&gt;io.springfox&lt;/groupId&gt;
              &lt;artifactId&gt;springfox-swagger2&lt;/artifactId&gt;
              &lt;version&gt;${swagger.version}&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;io.springfox&lt;/groupId&gt;
              &lt;artifactId&gt;springfox-swagger-ui&lt;/artifactId&gt;
              &lt;version&gt;${swagger.version}&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.apache.tika&lt;/groupId&gt;
              &lt;artifactId&gt;tika-core&lt;/artifactId&gt;
              &lt;version&gt;1.14&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.apache.commons&lt;/groupId&gt;
              &lt;artifactId&gt;commons-lang3&lt;/artifactId&gt;
              &lt;version&gt;3.3.2&lt;/version&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.postgresql&lt;/groupId&gt;
              &lt;artifactId&gt;postgresql&lt;/artifactId&gt;
              &lt;scope&gt;runtime&lt;/scope&gt;
          &lt;/dependency&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;org.jboss.aerogear&lt;/groupId&gt;
              &lt;artifactId&gt;aerogear-otp-java&lt;/artifactId&gt;
              &lt;version&gt;1.0.0&lt;/version&gt;
          &lt;/dependency&gt;
  
          &lt;dependency&gt;
              &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
              &lt;artifactId&gt;spring-boot-starter-data-jpa&lt;/artifactId&gt;
          &lt;/dependency&gt;
      &lt;/dependencies&gt;
  
      &lt;build&gt;
          &lt;finalName&gt;${project.artifactId}&lt;/finalName&gt;
          &lt;plugins&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
                  &lt;artifactId&gt;spring-boot-maven-plugin&lt;/artifactId&gt;
              &lt;/plugin&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;com.mysema.maven&lt;/groupId&gt;
                  &lt;artifactId&gt;apt-maven-plugin&lt;/artifactId&gt;
                  &lt;version&gt;1.1.3&lt;/version&gt;
                  &lt;executions&gt;
                      &lt;execution&gt;
                          &lt;goals&gt;
                              &lt;goal&gt;process&lt;/goal&gt;
                          &lt;/goals&gt;
                          &lt;phase&gt;generate-sources&lt;/phase&gt;
                          &lt;configuration&gt;
                              &lt;source&gt;src/main/java/ro/gss/app/jpa/domain/entity&lt;/source&gt;
                              &lt;outputDirectory&gt;target/generated-sources/java&lt;/outputDirectory&gt;
                              &lt;processor&gt;com.mysema.query.apt.jpa.JPAAnnotationProcessor,lombok.launch.AnnotationProcessorHider$AnnotationProcessor&lt;/processor&gt;
                              &lt;options&gt;
                                  &lt;querydsl.entityAccessors&gt;true&lt;/querydsl.entityAccessors&gt;
                              &lt;/options&gt;
                          &lt;/configuration&gt;
                      &lt;/execution&gt;
                  &lt;/executions&gt;
              &lt;/plugin&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt;
                  &lt;artifactId&gt;build-helper-maven-plugin&lt;/artifactId&gt;
                  &lt;executions&gt;
                      &lt;execution&gt;
                          &lt;id&gt;add-source&lt;/id&gt;
                          &lt;phase&gt;generate-sources&lt;/phase&gt;
                          &lt;goals&gt;
                              &lt;goal&gt;add-source&lt;/goal&gt;
                          &lt;/goals&gt;
                          &lt;configuration&gt;
                              &lt;sources&gt;
                                  &lt;source&gt;target/generated-sources/java/&lt;/source&gt;
                              &lt;/sources&gt;
                          &lt;/configuration&gt;
                      &lt;/execution&gt;
                  &lt;/executions&gt;
              &lt;/plugin&gt;
          &lt;/plugins&gt;
      &lt;/build&gt;
  
  
  &lt;/project&gt;
  </code></pre>
  
  <p>By using mvn -e clean package I got the following extra details:</p>
  
  <pre><code>org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project database: Compilation failure
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
  </code></pre>
  
  <p>Any help is appreciated.</p>