Clean-up and modernize target-platform loading classes

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/TargetPlatformHelper.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2023 IBM Corporation and others.
+ * Copyright (c) 2000, 2024 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -292,7 +292,7 @@ public static ITargetDefinition getUnresolvedRepositoryBasedWorkspaceTarget() th
 	private static boolean containsNotEmptyIULocation(ITargetLocation[] locations) {
 		return locations != null && Arrays.stream(locations) //
 				.filter(IUBundleContainer.class::isInstance).map(IUBundleContainer.class::cast)
-				.map(IUBundleContainer::getRepositories).anyMatch(uri -> uri != null && uri.length > 0);
+				.map(IUBundleContainer::getRepositories).anyMatch(uri -> !uri.isEmpty());
 	}
 
 	public static Set<String> getApplicationNameSet() {

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/target/IULocationFactory.java

@@ -89,9 +89,6 @@ public ITargetLocation getTargetLocation(String type, String serializedXML) thro
 					}
 				}
 			}
-			String[] iuIDs = ids.toArray(new String[ids.size()]);
-			String[] iuVer = versions.toArray(new String[versions.size()]);
-			URI[] uris = repos.toArray(new URI[repos.size()]);
 
 			int flags = IUBundleContainer.INCLUDE_REQUIRED;
 			if (includeMode != null && includeMode.trim().length() > 0) {
@@ -109,8 +106,8 @@ public ITargetLocation getTargetLocation(String type, String serializedXML) thro
 			} else {
 				flags |= Boolean.parseBoolean(followRepositoryReferences) ? IUBundleContainer.FOLLOW_REPOSITORY_REFERENCES : 0;
 			}
-			return TargetPlatformService.getDefault().newIULocation(iuIDs, iuVer, uris,
-					flags);
+			return TargetPlatformService.getDefault().newIULocation( //
+					ids.toArray(String[]::new), versions.toArray(String[]::new), repos.toArray(URI[]::new), flags);
 		}
 		return null;
 	}

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/target/InstallableUnitGenerator.java

@@ -23,6 +23,7 @@
 import java.util.Arrays;
 import java.util.Map.Entry;
 import java.util.Set;
+import java.util.function.Consumer;
 import java.util.jar.Attributes;
 import java.util.jar.Manifest;
 import java.util.stream.Stream;
@@ -57,14 +58,14 @@ public static Stream<IInstallableUnit> generateInstallableUnits(TargetBundle[] b
 		return Stream.concat(generateInstallableUnits(bundles), generateInstallableUnits(features));
 	}
 
-	public static Stream<IInstallableUnit> generateInstallableUnits(TargetBundle[] bundles) {
+	private static Stream<IInstallableUnit> generateInstallableUnits(TargetBundle[] bundles) {
 		if (bundles == null || bundles.length == 0) {
 			return Stream.empty();
 		}
-		return Arrays.stream(bundles).flatMap(InstallableUnitGenerator::generateInstallableUnits);
+		return Arrays.stream(bundles).mapMulti(InstallableUnitGenerator::generateInstallableUnits);
 	}
 
-	public static Stream<IInstallableUnit> generateInstallableUnits(TargetBundle targetBundle) {
+	private static void generateInstallableUnits(TargetBundle targetBundle, Consumer<IInstallableUnit> downStream) {
 		BundleInfo bundleInfo = targetBundle.getBundleInfo();
 		if (bundleInfo != null) {
 			String manifest = bundleInfo.getManifest();
@@ -87,24 +88,23 @@ public static Stream<IInstallableUnit> generateInstallableUnits(TargetBundle tar
 								BundlesAction.createBundleArtifactKey(bundleDescription.getSymbolicName(),
 										bundleDescription.getVersion().toString()),
 								publisherInfo);
-						return Stream.of(iu);
+						downStream.accept(iu);
 					}
 				} catch (IOException e) {
 					// can't use it then...
 				}
 			}
 		}
-		return Stream.empty();
 	}
 
-	public static Stream<IInstallableUnit> generateInstallableUnits(TargetFeature[] features) {
+	private static Stream<IInstallableUnit> generateInstallableUnits(TargetFeature[] features) {
 		if (features == null || features.length == 0) {
 			return Stream.empty();
 		}
 		return Arrays.stream(features).flatMap(InstallableUnitGenerator::generateInstallableUnits);
 	}
 
-	public static Stream<IInstallableUnit> generateInstallableUnits(TargetFeature targetFeature) {
+	private static Stream<IInstallableUnit> generateInstallableUnits(TargetFeature targetFeature) {
 		String location = targetFeature.getLocation();
 		if (location != null) {
 			Feature feature = new FeatureParser().parse(new File(location));

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/target/Messages.java

@@ -19,7 +19,6 @@ public class Messages extends NLS {
 	private static final String BUNDLE_NAME = "org.eclipse.pde.internal.core.target.Messages"; //$NON-NLS-1$
 	public static String AbstractBundleContainer_1;
 	public static String AbstractBundleContainer_3;
-	public static String AbstractTargetHandle_0;
 	public static String DirectoryBundleContainer_0;
 	public static String DirectoryBundleContainer_1;
 	public static String FeatureBundleContainer_0;

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/target/Messages.properties

@@ -14,7 +14,6 @@
 
 AbstractBundleContainer_3=Required plug-in could not be found: {0}
 AbstractBundleContainer_1=Required plug-in with version {0} not found: {1}
-AbstractTargetHandle_0=Profile registry service not found
 DirectoryBundleContainer_0=Reading bundles...
 DirectoryBundleContainer_1=Directory does not exist: {0}
 FeatureBundleContainer_0=Directory does not exist: {0}