From 6d460694aa639b11ab8b045ba4c376596dffb6b1 Mon Sep 17 00:00:00 2001
From: Ladislav Thon <lthon@redhat.com>
Date: Mon, 11 Mar 2024 10:50:59 +0100
Subject: [PATCH] skip Jandex Maven plugin execution for POM packaging

---
 maven-plugin/src/it/skipForPom/pom.xml        | 33 +++++++++++++++++++
 maven-plugin/src/it/skipForPom/verify.groovy  |  2 ++
 .../org/jboss/jandex/maven/JandexGoal.java    | 10 ++++++
 3 files changed, 45 insertions(+)
 create mode 100644 maven-plugin/src/it/skipForPom/pom.xml
 create mode 100644 maven-plugin/src/it/skipForPom/verify.groovy

diff --git a/maven-plugin/src/it/skipForPom/pom.xml b/maven-plugin/src/it/skipForPom/pom.xml
new file mode 100644
index 00000000..0331b05a
--- /dev/null
+++ b/maven-plugin/src/it/skipForPom/pom.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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.jboss.jandex</groupId>
+  <artifactId>jandex-maven-plugin-skipForPom</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+  </properties>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>@project.groupId@</groupId>
+        <artifactId>@project.artifactId@</artifactId>
+        <version>@project.version@</version>
+        <executions>
+          <execution>
+            <id>make-index</id>
+            <goals>
+              <goal>jandex</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/maven-plugin/src/it/skipForPom/verify.groovy b/maven-plugin/src/it/skipForPom/verify.groovy
new file mode 100644
index 00000000..f856637a
--- /dev/null
+++ b/maven-plugin/src/it/skipForPom/verify.groovy
@@ -0,0 +1,2 @@
+def jandexFile = new File(basedir, 'target/classes/META-INF/jandex.idx')
+assert !jandexFile.exists()
diff --git a/maven-plugin/src/main/java/org/jboss/jandex/maven/JandexGoal.java b/maven-plugin/src/main/java/org/jboss/jandex/maven/JandexGoal.java
index 15b6c8b6..1e05c6c7 100644
--- a/maven-plugin/src/main/java/org/jboss/jandex/maven/JandexGoal.java
+++ b/maven-plugin/src/main/java/org/jboss/jandex/maven/JandexGoal.java
@@ -125,11 +125,21 @@ public class JandexGoal extends AbstractMojo {
     @Parameter(property = "jandex.skip", defaultValue = "false")
     private boolean skip;
 
+    /**
+     * Skip execution if set and if the module's packaging is POM.
+     */
+    @Parameter(defaultValue = "true")
+    private boolean skipForPomPackaging;
+
     public void execute() throws MojoExecutionException {
         if (skip) {
             getLog().info("Jandex execution skipped");
             return;
         }
+        if ("pom".equals(mavenProject.getPackaging()) && skipForPomPackaging) {
+            getLog().info("Jandex execution skipped for POM packaging");
+            return;
+        }
 
         if (fileSets == null) {
             fileSets = new ArrayList<>();