Autogenerate examples archetype during build

.gitignore

@@ -7,6 +7,7 @@ target/
 bin/
 
 # Ignore generated archetypes
+sdks/java/maven-archetypes/examples/src/main/resources/archetype-resources/src/
 sdks/java/maven-archetypes/examples-java8/src/main/resources/archetype-resources/src/
 
 # Ignore IntelliJ files.

sdks/java/maven-archetypes/update-examples-archetype.sh → sdks/java/maven-archetypes/examples/generate-sources.sh

@@ -24,10 +24,13 @@
 HERE="$(dirname $0)"
 
 # The directory of the examples-java module
-EXAMPLES_ROOT="${HERE}/../../../examples/java"
+EXAMPLES_ROOT="${HERE}/../../../../examples/java"
 
 # The root of the examples archetype
-ARCHETYPE_ROOT="${HERE}/examples/src/main/resources/archetype-resources"
+ARCHETYPE_ROOT="${HERE}/src/main/resources/archetype-resources"
+
+mkdir -p "${ARCHETYPE_ROOT}/src/main/java"
+mkdir -p "${ARCHETYPE_ROOT}/src/test/java"
 
 #
 # Copy the Java subset of the examples project verbatim. 
@@ -44,16 +47,22 @@ rsync -a --exclude cookbook --exclude complete --exclude '*IT.java'  \
 # Replace 'package org.apache.beam.examples' with 'package ${package}' in all Java code
 #
 find "${ARCHETYPE_ROOT}/src/main/java" -name '*.java' -print0 \
-    | xargs -0 sed -i 's/^package org\.apache\.beam\.examples/package ${package}/g'
+    | xargs -0 sed -i.bak 's/^package org\.apache\.beam\.examples/package ${package}/g'
 
 find "${ARCHETYPE_ROOT}/src/test/java" -name '*.java' -print0 \
-    | xargs -0 sed -i 's/^package org\.apache\.beam\.examples/package ${package}/g'
+    | xargs -0 sed -i.bak 's/^package org\.apache\.beam\.examples/package ${package}/g'
 
 #
 # Replace 'import org.apache.beam.examples.' with 'import ${package}.' in all Java code
 #
 find "${ARCHETYPE_ROOT}/src/main/java" -name '*.java' -print0 \
-    | xargs -0 sed -i 's/^import org\.apache\.beam\.examples/import ${package}/g'
+    | xargs -0 sed -i.bak 's/^import org\.apache\.beam\.examples/import ${package}/g'
 
 find "${ARCHETYPE_ROOT}/src/test/java" -name '*.java' -print0 \
-    | xargs -0 sed -i 's/^import org\.apache\.beam\.examples/import ${package}/g'
+    | xargs -0 sed -i.bak 's/^import org\.apache\.beam\.examples/import ${package}/g'
+
+#
+# The use of -i.bak is necessary for the above to work with both GNU and BSD sed. 
+# Delete the files now.
+#
+find "${ARCHETYPE_ROOT}/src" -name '*.bak' -delete

sdks/java/maven-archetypes/examples/pom.xml

@@ -15,7 +15,9 @@
     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/xsd/maven-4.0.0.xsd">
+<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>
 
@@ -29,7 +31,8 @@
   <artifactId>beam-sdks-java-maven-archetypes-examples</artifactId>
   <name>Apache Beam :: SDKs :: Java :: Maven Archetypes :: Examples</name>
   <description>A Maven Archetype to create a project containing all the
-    example pipelines from the Apache Beam Java SDK.</description>
+    example pipelines from the Apache Beam Java SDK.
+  </description>
 
   <packaging>maven-archetype</packaging>
 
@@ -65,7 +68,27 @@
         </plugin>
       </plugins>
     </pluginManagement>
+
+    <plugins>
+      <plugin>
+        <artifactId>exec-maven-plugin</artifactId>
+        <groupId>org.codehaus.mojo</groupId>
+        <executions>
+          <execution>
+            <id>generate-archetype-contents</id>
+            <phase>generate-sources</phase>
+            <goals>
+              <goal>exec</goal>
+            </goals>
+            <configuration>
+              <executable>${project.basedir}/generate-sources.sh</executable>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
   </build>
+
   <dependencies>
     <dependency>
       <groupId>org.apache.beam</groupId>

sdks/java/maven-archetypes/examples/src/main/resources/archetype-resources/pom.xml

@@ -81,24 +81,7 @@
             <cleanupDaemonThreads>false</cleanupDaemonThreads>
           </configuration>
         </plugin>
-
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-dependency-plugin</artifactId>
-        <version>2.10</version>
-        <executions>
-          <execution>
-            <goals><goal>analyze-only</goal></goals>
-            <configuration>
-              <!-- Ignore runtime-only dependencies in analysis -->
-              <ignoreNonCompile>true</ignoreNonCompile>
-              <failOnWarning>true</failOnWarning>
-            </configuration>
-          </execution>
-        </executions>
-       </plugin>
-     </plugins>
-
+      </plugins>
     </pluginManagement>
   </build>