base/src/main/java/de/staropensource/sosengine/base/utility/DependencyResolver.java

@@ -124,27 +124,19 @@ public final class DependencyResolver {
      * Throws an exception when detecting an unmet dependency or a dependency cycle.
      *
      * @return itself
-     * @throws IllegalStateException when encountering an invalid vector
+     * @throws UnmetDependenciesException   when dependencies are unmet
-     * @throws UnmetDependenciesException when dependencies are unmet
      * @since v1-alpha1
      */
-    public synchronized DependencyResolver resolve() throws IllegalStateException, UnmetDependenciesException {
+    public synchronized DependencyResolver resolve() throws UnmetDependenciesException {
-        Map<@NotNull DependencyVector, @NotNull String> unmetDependencies = new HashMap<>();
+        Map<DependencyVector, String> unmetDependencies = new HashMap<>();
-        List<@NotNull String> output;
 
         for (DependencyVector vector : vectors) {
             if (!vectorsResolved.contains(vector.getIdentifier())) {
-                output = resolveVector(vector);
+                resolveVector(vector);
-                for (String item : output)
-                    unmetDependencies.put(vector, item);
-
                 vectorsResolved.add(vector.getIdentifier());
             }
         }
 
-        if (!unmetDependencies.isEmpty())
-            throw new UnmetDependenciesException(unmetDependencies);
-
         resolved = true;
         return this;
     }
@@ -154,8 +146,8 @@ public final class DependencyResolver {
      * Throws an exception when detecting an unmet dependency or a dependency cycle.
      *
      * @return list of unmet dependencies
-     * @throws IllegalStateException when encountering an invalid dependency or provider
+     * @throws IllegalStateException        when encountering an invalid dependency or provider
-     * @throws Exception             when some unknown error occurs
+     * @throws Exception                    when some unknown error occurs
      * @since v1-alpha4
      */
     private @NotNull List<@NotNull String> resolveVector(@NotNull DependencyVector vector) throws IllegalStateException {
@@ -282,7 +274,7 @@ public final class DependencyResolver {
                 // Compare versions
                 if (versioningSystemResolved.compare(versioningSystemEquals) != 1)
                     unmetDependencies.add("Dependency \"" + dependency + "\" is not met: Expected version " + versionEqual + " does not match found version " + vector.getVersion());
-            } else if (!versionBigger.isEmpty() || !versionSmaller.isEmpty()) {
+            } else {
                 VersioningSystem versioningSystemSmaller = null;
                 VersioningSystem versioningSystemBigger = null;
 
@@ -305,17 +297,64 @@ public final class DependencyResolver {
 
                 // Compare versions
                 if (versioningSystemSmaller != null && versioningSystemBigger != null) {
-                    if (versioningSystemResolved.compare(versioningSystemSmaller) != 2 || versioningSystemResolved.compare(versioningSystemBigger) != 0)
+                    if (versioningSystemResolved.compare(versioningSystemSmaller) != 0 && versioningSystemResolved.compare(versioningSystemBigger) != 2)
                         unmetDependencies.add("Dependency \"" + dependency + "\" is not met: Version " + vector.getVersion() + " is not in range " + versionSmaller + " to " + versionBigger);
                 } else {
                     if (versioningSystemSmaller != null)
-                        if (versioningSystemResolved.compare(versioningSystemSmaller) != 2)
+                        if (versioningSystemResolved.compare(versioningSystemSmaller) != 0)
                             unmetDependencies.add("Dependency \"" + dependency + "\" is not met: Version " + vector.getVersion() + " is bigger than " + versionSmaller);
                     if (versioningSystemBigger != null)
-                        if (versioningSystemResolved.compare(versioningSystemBigger) != 0)
+                        if (versioningSystemResolved.compare(versioningSystemBigger) != 2)
                             unmetDependencies.add("Dependency \"" + dependency + "\" is not met: Version " + vector.getVersion() + " is smaller than " + versionBigger);
                 }
             }
+
+            /*
+            if (dependency.contains("=")) {
+                // Check for '<' and '>'
+                if (dependency.contains("<") || dependency.contains(">"))
+                    throw new IllegalStateException("The dependency listing \"" + dependency + "\" can't require a specific version and have minimum and maximum version specifiers");
+
+                // Check for multiple '='
+                if (dependency.split("\\\\=").length != 1)
+                    throw new IllegalStateException("The dependency listing \"" + dependency + "\" can't include multiple equals characters");
+
+                // Get identifier and required version
+                int index = dependency.indexOf("=");
+                String identifier = dependency.substring(0, index);
+                String version = dependency.substring(index + 1);
+
+                DependencyVector dependencyResolved = getMatchingVector(identifier);
+                if (dependencyResolved == null)
+                    unmetDependencies.add("Dependency \"" + dependency + "\" is not met: Not found");
+                else {
+                    VersioningSystem versioningSystemResolved;
+                    VersioningSystem versioningSystemEquals;
+
+                    // Create VersioningSystem instances for comparing versions
+                    try {
+                        versioningSystemResolved = dependencyResolved.getVersioningSystem().getDeclaredConstructor(String.class).newInstance(dependencyResolved.getVersion());
+                    } catch (NoSuchMethodException | InstantiationException | IllegalAccessException |
+                             InvocationTargetException exception) {
+                        logger.crash("Unable to check version of dependency \"" + dependency + "\": Unable to initialize versioning system " + dependencyResolved.getVersioningSystem().getName(), exception);
+                        break;
+                    }
+                    try {
+                        versioningSystemEquals = dependencyResolved.getVersioningSystem().getDeclaredConstructor(String.class).newInstance(version);
+                    } catch (NoSuchMethodException | InstantiationException | IllegalAccessException |
+                             InvocationTargetException exception) {
+                        logger.crash("Unable to initialize versioning system " + vector.getVersioningSystem().getName() + " of vector " + vector.getIdentifier(), exception);
+                        break;
+                    }
+
+                    // Compare versions
+                    if (versioningSystemResolved.compare(versioningSystemEquals) != 1)
+                        unmetDependencies.add("Dependency \"" + dependency + "\" is not met: Expected version " + version + " does not match found version " + vector.getVersion());
+                }
+            } else {
+                throw new IllegalStateException("The dependency listing \"" + dependency + "\" does not contain a version identifier");
+            }
+             */
         }
 
         return unmetDependencies;

base/src/test/java/de/staropensource/sosengine/base/srctests/utility/DependencyResolverTest.java

@@ -94,7 +94,6 @@ class DependencyResolverTest extends TestBase {
                 // Vector 2
                 dependencies = new HashSet<>();
                 dependencies.add("test0=49");
-                dependencies.add("test1=999");
                 vectors.add(
                         new DependencyVector.Builder()
                                 .setIdentifier("test2")
@@ -165,7 +164,7 @@ class DependencyResolverTest extends TestBase {
                                 .build()
                 );
                 // Vector 5
-                dependencies.add("test4>998<1000");
+                dependencies.add("test4>998<100");
                 vectors.add(
                         new DependencyVector.Builder()
                                 .setIdentifier("test5")
@@ -236,8 +235,8 @@ class DependencyResolverTest extends TestBase {
                                 .setDependencies(dependencies)
                                 .build()
                 );
-                // Vector 6p
+                // Vector 6
-                dependencies.add("test5>998<1000");
+                dependencies.add("test5>998<100");
                 vectors.add(
                         new DependencyVector.Builder()
                                 .setIdentifier("test6")
@@ -267,7 +266,7 @@ class DependencyResolverTest extends TestBase {
         try {
             resolver.resolve();
         } catch (UnmetDependenciesException exception) {
-            getLogger().error("Dependency resolution failed:");
+            getLogger().error("Dependency resolution failed: Unmet dependencies found:");
             for (DependencyVector vector : exception.getUnmetDependencies().keySet())
                 getLogger().error("-> " + vector.getIdentifier() + "=" + vector.getVersion() + ": " + exception.getUnmetDependencies().get(vector));
 
@@ -352,7 +351,6 @@ class DependencyResolverTest extends TestBase {
                 );
                 // Vector 2
                 dependencies = new HashSet<>();
-                dependencies.add("testNULL");
                 dependencies.add("test1>999");
                 vectors.add(
                         new DependencyVector.Builder()
@@ -485,7 +483,7 @@ class DependencyResolverTest extends TestBase {
         try {
             resolver.resolve();
         } catch (UnmetDependenciesException exception) {
-            getLogger().error("Dependency resolution failed (great!):");
+            getLogger().error("Dependency resolution failed (great!): Unmet dependencies found:");
             for (DependencyVector vector : exception.getUnmetDependencies().keySet())
                 getLogger().error("-> " + vector.getIdentifier() + "=" + vector.getVersion() + ": " + exception.getUnmetDependencies().get(vector));