CODEWITHSUNDEEP
javaantclasspathjavac
user1768830
user1768830

Reputation:

Why does ant think package doesn't exist?

I have the following directory structure:

MyApp/
    src/main/java/
        com/
            myapp/
                api/
                    IFizz
                    FizzLoader
                impl/
                    core/
                        FizzImpl
                    Cat
                    Dog
                    Tree
                    ...many other objects
    src/test/java
        ...
    build/
    lib/
    ...

I want to only compile everything under src/main/java/com/myapp/api as well as com.myapp.impl.core.FizzImpl, such that Cat, Dog, Tree etc. do not get compiled (and are thus excluded).

In by Ant build (build.xml), I configure the following main.compile.path:

<path id="src.path">
    <fileset dir="src/main/java/com/myapp/api">
        <include name="**.*java"/>
    </fileset>
</path>
<path id="lib.main.path">
    <fileset dir="lib/main">
        <include name="**/*.jar"/>
    </fileset>
</path>
<path id="main.compile.path">
    <path refid="src.path" />
    <path refid="lib.main.path" />
    <fileset dir="src/main/java" includes="com/myapp/impl/core/**/*" />
</path>

And then the following main-compile target:

<target name="main-compile">
    <javac includeantruntime="false" srcdir="src/main/java/com/myapp/api"
            destdir="gen/bin/main" debug="on">
        <classpath refid="main.compile.path"/>
    </javac>
</target>

When I run main-compile, I get the following build exception:

[javac] /home/myuser/eclipse/workspace/MyApp/src/main/java/com/myapp/api/FizzLoader.java:14: package com.myapp.impl.core does not exist
[javac] import com.myapp.impl.core.FizzImpl;
[javac]  ...(omitting rest of trace but available upon request)

Here, FizzLoader is creating an instance of FizzImpl, and so I need this on the compile path.

Why does Ant not see the com.myapp.impl.core.FizzImpl that I have selectively added to the main.compile.path? Thanks in advance!

Upvotes: 0

Views: 1348

Answers (1)

JB Nizet
JB Nizet

Reputation: 691715

The classpath of javac should refer to directories and jar files containing the root of compiled class files trees. It should not refer to Java files.

Similarly, the source directory should refer to the root of the package tree of the source files. Not to directories corresponding to packages, inside the package tree.

Your compile task should look like

<target name="main-compile">
    <javac includeantruntime="false" 
           srcdir="src/main/java"
           destdir="${gen.bin.main.dir}" 
           debug="on"
           includes="com/myapp/api/**/*.java, com/myapp/impl/core/FizzImpl/**/*.java">
        <classpath refid="lib.main.path"/>
    </javac>
</target>

Upvotes: 1

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