adding placeholder jars

Author: chernser

packages/clickhouse-jdbc-all/pom.xml

@@ -37,6 +37,46 @@
                     </archive>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>3.3.0</version> <!-- Use a recent version -->
+                <executions>
+                    <execution>
+                        <id>javadoc-jar</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                        <configuration>
+                            <classifier>javadoc</classifier>
+                            <!-- To create an empty Javadoc JAR, you can set includeEmptyDirs to false and ensure no files are copied -->
+                            <includeEmptyDirs>false</includeEmptyDirs>
+                            <excludes>
+                                <!-- Exclude all files to ensure an empty JAR if desired -->
+                                <exclude>**/*</exclude>
+                            </excludes>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>**/*</exclude>
+                    </excludes>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
@@ -51,7 +91,7 @@
                         <configuration>
                             <shadedArtifactAttached>false</shadedArtifactAttached>
                             <createDependencyReducedPom>true</createDependencyReducedPom>
-                            <createSourcesJar>true</createSourcesJar>
+                            <createSourcesJar>false</createSourcesJar>
                             <promoteTransitiveDependencies>true</promoteTransitiveDependencies>
                             <shadedClassifierName></shadedClassifierName>
                         </configuration>