Fixes #435

base/src/main/java/org/ndx/aadarchi/base/utils/commonsvfs/FileObjectDetector.java

@@ -96,7 +96,7 @@ public <Returned> Optional<Returned> whenFileDetected(Element element,
 			FileSelector filter = new FileFilterSelector(fileFilter);
 			try {
 				FileObject[] found = elementRoot.findFiles(filter);
-				if (found.length == 0) {
+				if (found==null || found.length == 0) {
 					return onNoFileDetected.apply(elementRoot);
 				} else if (found.length > 1) {
 					return onMultipleFileDetected.apply(elementRoot, found);

maven-metadata-inferer/src/test/java/org/ndx/aadarchi/inferer/maven/TestFor435.java

@@ -0,0 +1,49 @@
+package org.ndx.aadarchi.inferer.maven;
+
+import java.util.Arrays;
+
+import jakarta.inject.Inject;
+
+import org.apache.commons.vfs2.FileObject;
+import org.apache.commons.vfs2.FileSystemException;
+import org.assertj.core.api.Assertions;
+import org.assertj.core.api.InstanceOfAssertFactories;
+import org.jboss.weld.junit5.EnableWeld;
+import org.jboss.weld.junit5.WeldInitiator;
+import org.jboss.weld.junit5.WeldSetup;
+import org.junit.jupiter.api.Test;
+import org.ndx.aadarchi.base.ArchitectureEnhancer;
+import org.ndx.aadarchi.base.enhancers.ModelElementKeys;
+import org.ndx.aadarchi.base.enhancers.ModelElementKeys.ConfigProperties.BasePath;
+import org.ndx.aadarchi.cdi.deltaspike.ConfigProperty;
+
+import com.structurizr.Workspace;
+import com.structurizr.model.Container;
+import com.structurizr.model.SoftwareSystem;
+
+@EnableWeld
+public class TestFor435 {
+    @WeldSetup
+    public WeldInitiator weld = WeldInitiator.performDefaultDiscovery();
+
+    @Inject MavenDetailsInfererEnhancer tested;
+	@Inject ArchitectureEnhancer enhancer;
+
+	@Inject @ConfigProperty(name=BasePath.NAME, defaultValue = BasePath.VALUE) FileObject basePath;
+
+    @Test public void not_finding_file_doesnt_throw_NullPoinerException() throws FileSystemException {
+    	// Given
+    	var w = new Workspace(getClass().getName(), "a test workspace");
+    	SoftwareSystem system = w.getModel().addSoftwareSystem("The system to decorate with maven informations");
+    	system.addProperty(ModelElementKeys.ConfigProperties.BasePath.NAME, 
+    			basePath.getName().getPath()+"/a/folder/which/doesnt/exists");
+		// When
+    	// We emulate in-depth visit (but do not really perform it)
+    	enhancer.enhance(w, tested);
+		// Then
+		Assertions.assertThat(system.getContainers())
+			.describedAs("No container should be found, since path in which we search the maven pom doesn't exists")
+			.isEmpty()
+			;
+    }
+}