[MCOMPILER-474] - Also check jar files when determining if dependencies changed

src/it/MCOMPILER-474_recompile-dependent-when-package/dependent-module/pom.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+
+<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/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.maven.plugins.compiler.it</groupId>
+    <artifactId>mcompiler-474-test</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>dependent-module</artifactId>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.maven.plugins.compiler.it</groupId>
+      <artifactId>service</artifactId>
+      <version>1.0-SNAPSHOT</version>
+    </dependency>
+  </dependencies>
+
+</project>

src/it/MCOMPILER-474_recompile-dependent-when-package/dependent-module/src/main/java/Main.java

@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+public class Main
+{
+    public static void main( String[] args )
+    {
+        TestService testService = new TestService();
+        testService.run();
+    }
+}

src/it/MCOMPILER-474_recompile-dependent-when-package/invoker.properties

@@ -0,0 +1,21 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+invoker.goals = clean package
+invoker.goals.2 = groovy:execute
+invoker.goals.3 = package
+invoker.buildResult.3 = failure

src/it/MCOMPILER-474_recompile-dependent-when-package/pom.xml

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+
+<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/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.plugins.compiler.it</groupId>
+  <artifactId>mcompiler-474-test</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <description>
+    Integration test to verify that dependent-module is recompiled when run 'mvn package' without 'clean'
+    if module dependency changed.
+    The compilation should fail as dependent-module uses method that no longer exists (run() method of TestService
+    renamed to newMethodName()).
+  </description>
+
+  <modules>
+    <module>dependent-module</module>
+    <module>service</module>
+  </modules>
+
+  <build>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>@project.version@</version>
+        </plugin>
+        <plugin>
+          <groupId>org.codehaus.gmaven</groupId>
+          <artifactId>groovy-maven-plugin</artifactId>
+          <version>2.0</version>
+          <configuration>
+            <source>
+              def fileToModify = new File(project.basedir, 'service/src/main/java/TestService.java')
+              processFileInplace(fileToModify) { text ->
+                text.replaceAll(/run/, 'newMethodName')
+              }
+
+              def processFileInplace(file, Closure processText) {
+                file.write(processText(file.text))
+              }
+            </source>
+          </configuration>
+          <dependencies>
+            <dependency>
+              <groupId>org.codehaus.groovy</groupId>
+              <artifactId>groovy-all</artifactId>
+              <version>2.4.21</version>
+            </dependency>
+          </dependencies>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+  </build>
+
+</project>

src/it/MCOMPILER-474_recompile-dependent-when-package/service/pom.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+
+<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/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.maven.plugins.compiler.it</groupId>
+    <artifactId>mcompiler-474-test</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>service</artifactId>
+
+</project>

src/it/MCOMPILER-474_recompile-dependent-when-package/service/src/main/java/TestService.java

@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+public class TestService
+{
+
+    public void run()
+    {
+
+    }
+}

src/it/MCOMPILER-474_recompile-dependent-when-package/verify.groovy

@@ -0,0 +1,24 @@
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+def logFile = new File( basedir, 'build.log' )
+assert logFile.exists()
+content = logFile.text
+
+assert content.contains( 'COMPILATION ERROR :' )

src/main/java/org/apache/maven/plugin/compiler/AbstractCompilerMojo.java

@@ -493,8 +493,8 @@ public abstract class AbstractCompilerMojo
     private MojoExecution mojoExecution;
 
     /**
-     * file extensions to check timestamp for incremental build
-     * <b>default contains only <code>class</code></b>
+     * File extensions to check timestamp for incremental build.
+     * Default contains only <code>class</code> and <code>jar</code>.
      *
      * @since 3.1
      */
@@ -1603,7 +1603,7 @@ protected boolean isDependencyChanged()
 
         if ( fileExtensions == null || fileExtensions.isEmpty() )
         {
-            fileExtensions = Collections.singletonList( "class" );
+            fileExtensions = Collections.unmodifiableList( Arrays.asList( "class", "jar" ) );
         }
 
         Date buildStartTime = getBuildStartTime();
@@ -1614,10 +1614,8 @@ protected boolean isDependencyChanged()
 
         for ( String pathElement : pathElements )
         {
-            // ProjectArtifacts are artifacts which are available in the local project
-            // that's the only ones we are interested in now.
             File artifactPath = new File( pathElement );
-            if ( artifactPath.isDirectory() )
+            if ( artifactPath.isDirectory() || artifactPath.isFile() )
             {
                 if ( hasNewFile( artifactPath, buildStartTime ) )
                 {