Skip to main content

IntelliJ IDEA Compiler Excludes issue with generated sources

I've recently got a fresh new licensed IntelliJ IDEA 12 and have been so glad about it until I've suddenly stumbled upon a strange issue. The Java project that was being developed successfully in previous versions of IDEA crashed during building this time. Shortly, the solution was hidden under IDEA Settings Compiler.Excludes where the JAXB generated sources directory was excluded due to some unknown reason. Below are the details and the screenshots.

Symptoms of issue
Here are the symptoms of the issue. Whenever the sources directory is excluded from compiling, it's marked with cross signs. See generated directory below:

This issue results in numerous "cannot find symbol" errors during compilation:

Settings Compiler.Excludes
Here is the screenshot with the solution for this issue. You just need to delete the item with excluded sources and they will again magically appear in the classpath.

Update - the root cause found
After a while I realized that the solution above didn't work anymore although it seemed to work in the beginning. So I had to dig further and found this thread about maven compiling with multiple source directories. The issue appeared to be related to maven-compiler-plugin that we used to specify generatedSourcesDirectory:
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>2.3.2</version>
    <configuration>
        <source>1.6</source>
        <target>1.6</target>
        <generatedSourcesDirectory>src/main/generated</generatedSourcesDirectory>
    </configuration>
</plugin>
So removing the generatedSourcesDirectory property solved the issue - src/main/generated was no longer excluded from compilation on every update and reimport of maven project pom. However, it helped only when I created a new IntelliJ IDEA project from the project pom.xml and used build-helper-maven-plugin to mark generated as an additional sources directory:
<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>build-helper-maven-plugin</artifactId>
    <version>1.7</version>
    <executions>
        <execution>
            <phase>generate-sources</phase>
            <goals><goal>add-source</goal></goals>
            <configuration>
                <sources>
                    <source>src/main/generated</source>
                </sources>
            </configuration>
        </execution>
    </executions>
</plugin>
Also I've created a ticket for IntelliJ IDEA developers as the odd behavior is obviously caused by some bug: IDEA-97975.

Comments

  1. Ivan,
    Are you sure, that adding src/main/generated with build-helper-maven-plugin works in IntelliJ? It does not work in IntelliJ 12.

    Best regards,
    Sergiy

    ReplyDelete
    Replies
    1. Sergiy,

      It works fine for me, I'm using the latest version 12.1 atm. But it worked with older build of IntelliJ IDEA 12 as well. Did you try to remove IntelliJ IDEA project files (ipr, iml, iws, idea) and recreate the project using File -> Import Project? I mentioned this in the post as well. Before I did this trick, I also faced problems.

      Ivan

      Delete
  2. Maven Projects -> Reimport should help as well.

    ReplyDelete

Post a Comment

Popular posts from this blog

DynamicReports and Spring MVC integration

This is a tutorial on how to exploit DynamicReports reporting library in an existing  Spring MVC based web application. It's a continuation to the previous post where DynamicReports has been chosen as the most appropriate solution to implement an export feature in a web application (for my specific use case). The complete code won't be provided here but only the essential code snippets together with usage remarks. Also I've widely used this tutorial that describes a similar problem for an alternative reporting library. So let's turn to the implementation description and start with a short plan of this how-to: Adding project dependencies. Implementing the Controller part of the MVC pattern. Modifying the View part of the MVC pattern. Modifying web.xml. Adding project dependencies I used to apply Maven Project Builder throughout my Java applications, thus the dependencies will be provided in the Maven format. Maven project pom.xml file: net.sourcefo

Do It Yourself Java Profiling

This article is a free translation of the Russian one that is a transcript of the Russian video lecture done by Roman Elizarov at the Application Developer Days 2011 conference. The lecturer talked about profiling of Java applications without any standalone tools. Instead, it's suggested to use internal JVM features (i.e. threaddumps, java agents, bytecode manipulation) to implement profiling quickly and efficiently. Moreover, it can be applied on Production environments with minimal overhead. This concept is called DIY or "Do It Yourself". Below the lecture's text and slides begin. Today I'm giving a lecture "Do It Yourself Java Profiling". It's based on the real life experience that was gained during more than 10 years of developing high-loaded finance applications that work with huge amounts of data, millions currency rate changes per second and thousands of online users. As a result, we have to deal with profiling. Application pro

Using Oracle impdp utility to reload database

Here I'll show an example of using Oracle Data Pump Import (impdp) utility. It allows importing Oracle data dumps. Specifically, below is the list of steps I used on an existing Oracle schema to reload the data from a dump. Steps to reload the data from an Oracle dump We start with logging into SQL Plus as sysdba to be able to manage users. sqlplus sys/password@test as sysdba Dropping the existing user. CASCADE clause will ensure that all schema objects are removed before the user. SQL> DROP USER test CASCADE; Creating a fresh user will automatically create an empty schema with the same name. SQL> CREATE USER test IDENTIFIED BY "testpassword"; Granting DBA role to the user to load the dump later. Actually, it's an overkill and loading the dump can be permitted using a more granular role IMP_FULL_DATABASE . SQL> GRANT DBA TO test; Registering the directory where the dump is located. SQL> CREATE DIRECTORY dump_dir AS '/home/test/dumpd