feat: removeContext implemented

Signed-off-by: Leo Galambos <lg@hq.egothor.org>

.gitea/workflows/release.yml

@@ -31,14 +31,18 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-gradle-
 
-      - name: Build and publish to Gitea Maven
+      - name: Setup SSH key and rsync
-        run: ./gradlew clean publish --no-daemon -PgiteaToken=${{ secrets.CI_PUBLISH_TOKEN }}
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.JAVADOC_SSH_PRIVATE_KEY }}" > ~/.ssh/id_rsa
+          echo "${{ secrets.CI_KNOWN_HOSTS }}" > ~/.ssh/known_hosts
+          chmod -R 600 ~/.ssh
+          rm /etc/apt/sources.list.d/microsoft-prod.list
+          apt-get update
+          apt install -y rsync
 
-      - name: Upload built JAR
+      - name: Build and publish to Gitea Maven and JavaDoc to the website
-        uses: actions/upload-artifact@v3
+        run: ./gradlew clean publish uploadJavadoc --no-daemon -PgiteaToken=${{ secrets.CI_PUBLISH_TOKEN }} -PjavadocUser=${{ vars.JAVADOC_USER }} -PjavadocHost=${{ vars.JAVADOC_HOST }} -PjavadocPath=${{ vars.JAVADOC_PATH }} -PjavadocKeyPath=~/.ssh/id_rsa
-        with:
-          name: conflux
-          path: build/libs/*.jar
 
       - name: Generate release notes
         id: notes

.gitea/workflows/tag.yml

@@ -40,7 +40,7 @@ jobs:
 
       - name: Bump version and tag
         run: |
-          latest=$(git tag --list 'conflux@*' | sed 's/conflux@//' | sort -V | tail -n 1)
+          latest=$(git tag --list 'release@*' | sed 's/release@//' | sort -V | tail -n 1)
           if [[ -z "$latest" ]]; then
             latest="0.0.0"
           fi

.project

@@ -15,15 +15,9 @@
 			<arguments>
 			</arguments>
 		</buildCommand>
-		<buildCommand>
-			<name>net.sourceforge.pmd.eclipse.plugin.pmdBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
 	</buildSpec>
 	<natures>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
-		<nature>net.sourceforge.pmd.eclipse.plugin.pmdNature</nature>
 	</natures>
 </projectDescription>

.ruleset

@@ -0,0 +1,298 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ruleset xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         name="EgothorRuleset"
+         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 https://pmd.sourceforge.io/ruleset_2_0_0.xsd">
+   <description>Egothor preferences rule set</description>
+   <exclude-pattern>.*</exclude-pattern>
+   <include-pattern>.*\.java</include-pattern>
+   <rule ref="category/java/bestpractices.xml/AbstractClassWithoutAbstractMethod"/>
+   <rule ref="category/java/bestpractices.xml/AccessorClassGeneration"/>
+   <rule ref="category/java/bestpractices.xml/AccessorMethodGeneration"/>
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+   <rule ref="category/java/bestpractices.xml/AvoidPrintStackTrace"/>
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+   <rule ref="category/java/bestpractices.xml/AvoidStringBufferField"/>
+   <rule ref="category/java/bestpractices.xml/AvoidUsingHardCodedIP"/>
+   <rule ref="category/java/bestpractices.xml/CheckResultSet"/>
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+   <rule ref="category/java/design.xml/AvoidThrowingNullPointerException"/>
+   <rule ref="category/java/design.xml/AvoidThrowingRawExceptionTypes"/>
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+   <rule ref="category/java/design.xml/ClassWithOnlyPrivateConstructorsShouldBeFinal"/>
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+   <rule ref="category/java/design.xml/CouplingBetweenObjects"/>
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+   <rule ref="category/java/design.xml/UseUtilityClass"/>
+   <rule ref="category/java/documentation.xml/CommentContent"/>
+   <rule ref="category/java/documentation.xml/CommentRequired">
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+      <properties>
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+      </properties>
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+   <rule ref="category/java/errorprone.xml/AvoidDecimalLiteralsInBigDecimalConstructor"/>
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+   <rule ref="category/java/errorprone.xml/AvoidEnumAsIdentifier"/>
+   <rule ref="category/java/errorprone.xml/AvoidFieldNameMatchingMethodName"/>
+   <rule ref="category/java/errorprone.xml/AvoidFieldNameMatchingTypeName"/>
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+   <rule ref="category/java/errorprone.xml/AvoidLiteralsInIfCondition"/>
+   <rule ref="category/java/errorprone.xml/AvoidLosingExceptionInformation"/>
+   <rule ref="category/java/errorprone.xml/AvoidMultipleUnaryOperators"/>
+   <rule ref="category/java/errorprone.xml/AvoidUsingOctalValues"/>
+   <rule ref="category/java/errorprone.xml/BrokenNullCheck"/>
+   <rule ref="category/java/errorprone.xml/CallSuperFirst"/>
+   <rule ref="category/java/errorprone.xml/CallSuperLast"/>
+   <rule ref="category/java/errorprone.xml/CheckSkipResult"/>
+   <rule ref="category/java/errorprone.xml/ClassCastExceptionWithToArray"/>
+   <rule ref="category/java/errorprone.xml/CloneMethodMustBePublic"/>
+   <rule ref="category/java/errorprone.xml/CloneMethodMustImplementCloneable"/>
+   <rule ref="category/java/errorprone.xml/CloneMethodReturnTypeMustMatchClassName"/>
+   <rule ref="category/java/errorprone.xml/CloseResource"/>
+   <rule ref="category/java/errorprone.xml/CompareObjectsWithEquals"/>
+   <rule ref="category/java/errorprone.xml/ComparisonWithNaN"/>
+   <rule ref="category/java/errorprone.xml/ConfusingArgumentToVarargsMethod"/>
+   <rule ref="category/java/errorprone.xml/ConstructorCallsOverridableMethod"/>
+   <rule ref="category/java/errorprone.xml/DetachedTestCase"/>
+   <rule ref="category/java/errorprone.xml/DoNotCallGarbageCollectionExplicitly"/>
+   <rule ref="category/java/errorprone.xml/DoNotExtendJavaLangThrowable"/>
+   <rule ref="category/java/errorprone.xml/DoNotHardCodeSDCard"/>
+   <rule ref="category/java/errorprone.xml/DoNotTerminateVM"/>
+   <rule ref="category/java/errorprone.xml/DoNotThrowExceptionInFinally"/>
+   <rule ref="category/java/errorprone.xml/DontImportSun"/>
+   <rule ref="category/java/errorprone.xml/DontUseFloatTypeForLoopIndices"/>
+   <rule ref="category/java/errorprone.xml/EmptyCatchBlock"/>
+   <rule ref="category/java/errorprone.xml/EmptyFinalizer"/>
+   <rule ref="category/java/errorprone.xml/EqualsNull"/>
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+   <rule ref="category/java/errorprone.xml/FinalizeOnlyCallsSuperFinalize"/>
+   <rule ref="category/java/errorprone.xml/FinalizeOverloaded"/>
+   <rule ref="category/java/errorprone.xml/FinalizeShouldBeProtected"/>
+   <rule ref="category/java/errorprone.xml/IdempotentOperations"/>
+   <rule ref="category/java/errorprone.xml/ImplicitSwitchFallThrough"/>
+   <rule ref="category/java/errorprone.xml/InstantiationToGetClass"/>
+   <rule ref="category/java/errorprone.xml/InvalidLogMessageFormat"/>
+   <rule ref="category/java/errorprone.xml/JumbledIncrementer"/>
+   <rule ref="category/java/errorprone.xml/JUnitSpelling"/>
+   <rule ref="category/java/errorprone.xml/JUnitStaticSuite"/>
+   <rule ref="category/java/errorprone.xml/MethodWithSameNameAsEnclosingClass"/>
+   <rule ref="category/java/errorprone.xml/MisplacedNullCheck"/>
+   <rule ref="category/java/errorprone.xml/MissingSerialVersionUID"/>
+   <rule ref="category/java/errorprone.xml/MissingStaticMethodInNonInstantiatableClass"/>
+   <rule ref="category/java/errorprone.xml/MoreThanOneLogger"/>
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+   <rule ref="category/java/errorprone.xml/NullAssignment"/>
+   <rule ref="category/java/errorprone.xml/OverrideBothEqualsAndHashcode"/>
+   <rule ref="category/java/errorprone.xml/ProperCloneImplementation"/>
+   <rule ref="category/java/errorprone.xml/ProperLogger"/>
+   <rule ref="category/java/errorprone.xml/ReturnEmptyCollectionRatherThanNull"/>
+   <rule ref="category/java/errorprone.xml/ReturnFromFinallyBlock"/>
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+   <rule ref="category/java/errorprone.xml/SingleMethodSingleton"/>
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+   <rule ref="category/java/multithreading.xml/UseConcurrentHashMap"/>
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+   <rule ref="category/java/performance.xml/UseIndexOfChar"/>
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+   <rule ref="category/java/performance.xml/UselessStringValueOf"/>
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+   <rule ref="category/java/performance.xml/UseStringBufferLength"/>
+   <rule ref="category/java/security.xml/HardCodedCryptoKey"/>
+   <rule ref="category/java/security.xml/InsecureCryptoIv"/>
+</ruleset>

README.md

@@ -12,3 +12,28 @@ values and react to their changes in a clean and decoupled way.
 - Publish/subscribe event bus for listening to value changes
 - Simple API for easy integration into existing projects
 - Enables modular design by decoupling components through events
+
+## Getting Started
+
+Add to your `build.gradle`:
+```groovy
+repositories {
+    
+    maven {
+        name = "GiteaMaven"
+        url = uri("https://gitea.egothor.org/api/packages/Egothor/maven")
+    }
+    
+    // Use Maven Central for resolving dependencies.
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.egothor:conflux:x.x.x'
+}
+```
+
+## Documentation
+
+- [Conflux JavaDoc](https://www.egothor.org/javadoc/conflux/)
+- [Conflux Wiki](https://gitea.egothor.org/Egothor/conflux/wiki)

build.gradle

@@ -3,8 +3,13 @@ plugins {
     id 'java-library'
     id 'maven-publish'
     id 'com.palantir.git-version' version '4.0.0'
+    id 'pmd'
 }
 
+import java.time.LocalDate
+
+def currentYear=LocalDate.now().getYear()
+
 group 'org.egothor'
 version gitVersion(prefix:'release@')
 
@@ -20,6 +25,13 @@ dependencies {
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
 }
 
+pmd {
+	consoleOutput = true
+	toolVersion = '7.16.0'
+	sourceSets = [sourceSets.main]
+	ruleSetFiles = files(rootProject.file(".ruleset"))
+}
+
 // Apply a specific Java toolchain to ease working on different environments.
 java {
     toolchain {
@@ -32,15 +44,51 @@ java {
 
 javadoc {
     failOnError = false
-}
+    
+    options.addBooleanOption('html5', true)
+    options.tags('apiNote:a:API Note:')
+    options.tags('implSpec:a:Implementation Requirements:')
+    options.tags('implNote:a:Implementation Note:')
+    options.tags('param')
+    options.tags('return')
+    options.tags('throws')
+    options.tags('since')
+    options.tags('version')
+    options.tags('serialData')
+    options.tags('factory')
+    options.tags('see')
+    
+    options.use = true
+    options.author = true
+    options.version = true
+    options.windowTitle = 'Conflux'
+    
+    options.bottom = '<div style="text-align: right; padding: 5px;">Copyright &copy; ' + currentYear +
+                     ' Egothor - Version ' + version +
+                     ' - <a href="https://gitea.egothor.org/Egothor/conflux/raw/branch/main/LICENSE">License</a>' +
+                     '</div>'
+    source = sourceSets.main.allJava}
 
 tasks.named('test') {
     // Use JUnit Platform for unit tests.
     useJUnitPlatform()
 }
 
-tasks.withType(Javadoc).configureEach {
+task uploadJavadoc(type: Exec) {
-    options.bottom = "Copyright &copy; 2025 Egothor"
+    dependsOn javadoc
+
+    doFirst {
+        def javadocDir = tasks.javadoc.destinationDir
+        def relativeJavadocDir = project.projectDir.toPath().relativize(javadocDir.toPath()).toString()
+
+        println "Uploading Javadoc with key: ${javadocKeyPath}"
+        println "                  from relative path: $relativeJavadocDir"
+
+        commandLine "rsync", "-avz", "--delete",
+          "-e", "ssh -i ${javadocKeyPath} -o IdentitiesOnly=yes",
+          relativeJavadocDir + '/', "${javadocUser}@${javadocHost}:${javadocPath}"
+    }
+
 }
 
 if (project.hasProperty('giteaToken') && project.giteaToken) {

gradle.properties

@@ -0,0 +1 @@
+javadocPath=/var/www/html/javadoc/conflux/

src/main/java/conflux/Ctx.java

@@ -85,6 +85,46 @@ public enum Ctx implements CtxInterface {
         return contexts.computeIfAbsent(name, k -> new CtxInstance());
     }
 
+    /**
+     * Removes a named context previously created via {@link #getContext(String)}.
+     * <p>
+     * The context is atomically removed from the internal registry and then
+     * {@linkplain CtxInterface#clear() cleared} to release stored values and
+     * listener references. This operation is thread-safe and idempotent: if the
+     * specified context does not exist, the method returns {@code false} and
+     * performs no action.
+     * </p>
+     * <p>
+     * Calling {@code getContext(name)} again after a successful removal will create
+     * a brand-new, empty context. The default/global context represented by
+     * {@link #INSTANCE} is not affected.
+     * </p>
+     *
+     * @param name the name of the context to remove; must not be {@code null} or
+     *             blank
+     * @return {@code true} if a context with the given name existed and was
+     *         removed; {@code false} otherwise
+     * @throws IllegalArgumentException if {@code name} is {@code null} or blank
+     * @implNote Uses {@link ConcurrentHashMap#remove(Object)} for atomic removal,
+     *           then invokes {@link CtxInterface#clear()} on the removed instance.
+     * @since 2025.08
+     */
+    public boolean removeContext(String name) {
+        if (name == null || name.isBlank()) {
+            throw new IllegalArgumentException("name must not be null or blank");
+        }
+        CtxInterface ctx = contexts.remove(name);
+        final boolean existed = ctx != null;
+        if (existed) {
+            try {
+                ctx.clear();
+            } catch (RuntimeException ignore) { // NOPMD
+                // Best-effort cleanup; deregistration already succeeded.
+            }
+        }
+        return existed;
+    }
+
     /**
      * Returns the set of names for all currently registered contexts.
      *

src/main/java/conflux/CtxInstance.java

@@ -62,6 +62,16 @@ public final class CtxInstance implements CtxInterface {
     private final Map<String, Class<?>> keyTypes = new ConcurrentHashMap<>();
     private final Map<Key<?>, List<WeakReference<Listener<?>>>> listeners = new ConcurrentHashMap<>();
 
+    /**
+     * Protected no-argument constructor added to satisfy code analysis tools.
+     * <p>
+     * This constructor should not be used directly. It exists solely to comply with
+     * static analysis requirements (e.g., PMD) expecting at least one constructor.
+     */
+    protected CtxInstance() {
+        // Intentionally left blank
+    }
+
     /**
      * Stores or updates the value for a given key. If the key is used for the first
      * time, its type is recorded. If the key has been used before with a different
@@ -98,10 +108,10 @@ public final class CtxInstance implements CtxInterface {
         }
 
         // notify listeners
-        var list = listeners.get(key);
+        List<WeakReference<Listener<?>>> list = listeners.get(key);
         if (list != null) {
-            for (var ref : list) {
+            for (WeakReference<Listener<?>> ref : list) {
-                var listener = ref.get();
+                Listener<?> listener = ref.get();
                 if (listener != null) {
                     @SuppressWarnings("unchecked")
                     Listener<T> typedListener = (Listener<T>) listener;
@@ -146,7 +156,7 @@ public final class CtxInstance implements CtxInterface {
     @Override
     public Object remove(Key<?> key) {
         keyTypes.remove(key.name());
-        var removed = values.remove(key);
+        Object removed = values.remove(key);
         listeners.remove(key);
         return removed;
     }
@@ -183,10 +193,10 @@ public final class CtxInstance implements CtxInterface {
      */
     @Override
     public <T> void removeListener(Key<T> key, Listener<T> listener) {
-        var list = listeners.get(key);
+        List<WeakReference<Listener<?>>> list = listeners.get(key);
         if (list != null) {
             list.removeIf(ref -> {
-                var l = ref.get();
+                Listener<?> l = ref.get();
                 return l == null || l.equals(listener);
             });
             if (list.isEmpty()) {

src/main/java/conflux/Key.java

@@ -42,19 +42,19 @@ package conflux;
  * @author Leo Galambos
  */
 public final class Key<T> { // NOPMD by Leo Galambos on 7/3/25, 10:29 PM
-    private final String name;
+    private final String nameField;
-    private final Class<T> type;
+    private final Class<T> typeField;
 
     private Key(String name, Class<T> type) {
-        this.name = name;
+        this.nameField = name;
-        this.type = type;
+        this.typeField = type;
     }
 
     /**
      * Creates a new typed key.
      *
-     * @param name a unique key name
+     * @param name a unique key nameField
-     * @param type the class of the key's value type
+     * @param type the class of the key's value typeField
      * @param <T>  the type
      * @return a new {@code Key}
      */
@@ -68,7 +68,7 @@ public final class Key<T> { // NOPMD by Leo Galambos on 7/3/25, 10:29 PM
      * @return the name
      */
     public String name() {
-        return name;
+        return nameField;
     }
 
     /**
@@ -77,21 +77,21 @@ public final class Key<T> { // NOPMD by Leo Galambos on 7/3/25, 10:29 PM
      * @return the type
      */
     public Class<T> type() {
-        return type;
+        return typeField;
     }
 
     @Override
     public int hashCode() {
-        return name.hashCode();
+        return nameField.hashCode();
     }
 
     @Override
     public boolean equals(Object obj) {
-        return obj instanceof Key<?> other && name.equals(other.name);
+        return obj instanceof Key<?> other && nameField.equals(other.nameField);
     }
 
     @Override
     public String toString() {
-        return "Key[" + name + ", " + type.getSimpleName() + "]";
+        return "Key[" + nameField + ", " + typeField.getSimpleName() + "]";
     }
 }